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2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L01R-01-BAC - Roanoke River, South Fork and Goose Creek

Location: South Fork Roanoke River mainstem from the mouth of Elliott Creek extending downstream to the confluence of the North and South Forks of the Roanoke River. And Goose Creek from the Lick Fork mouth downstream to its confluence with the South Fork Roanoke River.
City/County Floyd Co., Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A, Fecal Coliform / 4A
The 2004 assessment initially 303(d) Listed the 12.61 mile fecal coliform (FC) bacteria impairment. Two stations on the S.F. Roanoke River, 4ARSF011.73 located on the Rt. 637 Bridge and 4ARSF002.20 above the old Green Hill industrial site near Rt. 11/460, find the Recreation Use is not supported. The 2012 assessment extends the bacteria impairment upstream 4.56 miles based on data from station 4ARSF014.02. The 2012 assessment also incorporates the Goose Creek 2012 bacteria impairment. The South Fork Roanoke River extension of 4.56 miles and Goose Creek addition of 2.37 miles brings the total impaired miles to 19.54.

The Roanoke River Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved on 8/02/2006 [Fed ID 24538] with SWCB approval on 6/27/2006. Assessment Units below are nested within the approved Roanoke River TMDL Watershed. Allocation scenario development is for the entire drainage to provide pollutant reductions for all watersheds contributing to the bacteria impairment. The entirety of the approved TMDL and allocations can be viewed at http://www.deq.virginia.gov. 1996 & 2002 fecal coliform (FC) observations are the basis for the original Roanoke bacteria impaired listing. The 2010 total bacteria impaired length on the Roanoke River is 29.51 miles and 350.06 acres in Smith Mountain Lake. The approved TMDL did not specifically address the South Fork Roanoke River or Goose Creek bacteria impairments but are nested within the overall Roanoke River Bacteria TMDL Watershed and allocations.

South Fork Roanoke River:
4ARSF014.02 (Persimmon Road Bridge) The 2012 assessment finds two Escherichia coli (E.coli) samples exceed the 235 cfu/100 ml instantaneous criterion from 12 obs. At 650 & 1500 cfu/100 ml.

4ARSF011.73 (Rt. 637 Bridge) The 2004 Integrated Report (IR) reveals three excursions from 12 FC observations in excess of the former instantaneous criterion of 400 cfu/100 ml. 2004 exceedances range from 600 to 3000 cfu/100 ml. 2010 and 2008 E.coli observations are insufficient to delist where no excursions of the E.coli criterion are found in eight samples. Therefore the 2004 FC impaired status remains.

4ARSF002.20- (Private Bridge above Green Hill) There are no additional data beyond the 2004 IR. Three of 18 FC observations exceed the instantaneous criterion in 2004. 2004 IR exceedances range from 600 to 5300 cfu/100 ml. The waters remain impaired for FC. There are no E.coli data to assess.

Goose Creek:
4AGOS000.71 (Along Rt. 653) The 2012 assessment finds three of 12 Escherichia coli (E.coli) samples exceed the 235 cfu/100 ml instantaneous criterion at 400, 480 and 780 cfu/100 ml.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
13.3

Roanoke River, South Fork and Goose Creek

Size within: Montgomery Co.

Recreation


Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Fecal Coliform / 4A
Total impaired size by water type:
6.24

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wastes from Pets
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L01R-01-BEN - Smith Creek, UT (XMV)

Location: Smith Creek, UT (XMV) from its mouth on Smith Creek upstream to its headwaters.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Benthic-Macroinvertebrate Bioassessments / 5A
The 2010 assessment finds the WQS General Standard contravened with benthic community impairment.

4AXMV000.63 (Off Rt. 615 along Chaucer Lane)- A 2007 Probabilistic site. Two Virginia Stream Condition Index (VSCI) surveys scoring spring 46.6 and fall 62.5 for an average score of 54.6. Taxa richness scores were higher in the spring sample; however, the abundance of pollution-tolerant organisms was high as well resulting in a lower VSCI score. Stream habitat scores were affected by the lack of instream cover for macroinvertebrates and fish, lack of bank vegetation and lack of riparian vegetative buffer. The station is on a 1st order headwater stream. There are ponds upstream of the station and immediate land use is residences with mowed lawns adjacent to the stream.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Benthic-Macroinvertebrate Bioassessments / 5A
Total impaired size by water type:
1.61

Smith Creek, UT (XMV)

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Loss of Riparian Habitat
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L01R-01-TEMP - Roanoke River, South Fork

Location: South Fork Roanoke River mainstem from the mouth of Elliott Creek extending downstream to the confluence of the South and North Forks of the Roanoke River.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Temperature, water / 5C
USGS Gaging Station 02053800 (S.F. Roanoke R. near Shawsville)- 2010 assessment reveals two of 12 Temperature measurements exceed the Class V 21°C criterion. Measurements in excess of the criterion occur on 8/07/2007 at 24.5°C and 8/29/2007 at 22°C. These data result in the return of 6.37 miles to the temperature 303(d) List that were partially de-listed with the 2008 IR. The temperature impairment is extended upstream for 4.56 miles based on 2012 data for 4ARSF014.02.

4ARSF014.02 (Persimmon Road Bridge) The 2012 assessment finds three temp measurements from 12 observations exceed the 21°C criterion at 23.1°C (8/13/2009); 22°C (6/10/2010) and 23.2°C (8/31/2010).

4ARSF011.73- (Rt. 637 Bridge) There are no additional data beyond the 2008 IR. Observations within the 2010 data window find no excursions of the respective criterion for temperature. The 2008 IR finds only one exceedance of the Class V 21°C criterion from 12 observations. 2008 data resulted in the partial de-list of temperature for 6.37 miles. The 2004 IR reported two of 12 temperature measurements in excess of the criterion. Each exceedance is 22°C occurring on 7/22/99 and 6/06/01. The 2004 Category 5C assessment remains. Low stream flows and drought conditions were observed during both 1999 and 2001.

4ARSF002.20- (above the old Green Hill industrial site near Rt. 11/460) No additional data beyond the 2004 IR. The 2004 IR records two of 18 temperature measurements exceed the WQS criterion. Each 2004 exceedance is 22°C occurring on 7/22/99 and 6/06/01. The 6.24 mile waters remain impaired (Category 5C) for temperature.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Temperature, water / 5C
Total impaired size by water type:
17.17

Roanoke River, South Fork

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Natural Conditions - Water Quality Standards Use Attainability Analyses Needed
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L01R-02-TEMP - Bottom Creek

Location: Bottom Creek mainstem from its mouth on the South Fork Roanoke River on upstream to the Rt. 669 crossing.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Temperature, water / 5C
4ABTM000.04 (Rt. 637 Bridge)-Temperature measurements within the 2012 data window find five of 20 measurements exceeding the 20°C criterion. Exceeding values range from 20.5 to 24°C. Temperature measurements within the 2010 data window find two of nine measurements exceeding the WQS Class VI 20°C criterion. Exceeding values occur on 7/7/2005 at 21 and 7/25/2006 at 20.5 °C. The 2008 IR finds three of 10 temperature measurements exceed the WQS Class VI criterion on 06/04/02 at 24.4 °C; 7/7/2005 at 21 and 7/25/2006 at 20.5 °C.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Temperature, water / 5C
Total impaired size by water type:
4.41

Bottom Creek

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Natural Conditions - Water Quality Standards Use Attainability Analyses Needed
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L02R-01-BAC - Roanoke River, North Fork

Location: North Fork Roanoke River from the mouth of Dry Run on the North Fork Roanoke River downstream to an unnamed tributary in the community of Ironto.
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A
Station 4ARNF013.66 located at Rt. 603 Bridge near Ellett (incorrectly coded 4ARNF015.09 in previous cycles), originally listed for fecal coliform (FC) bacteria in 2002 is now listed for Escherichia coli (E.coli). The bacteria impairment is extended upstream with the 2012 assessment by 9.03 miles.

The Roanoke River Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved on 8/02/2006 [Fed ID 24538] with SWCB approval on 9/07/2006. The Roanoke Bacteria TMDL watershed encompasses the North Fork Roanoke River. This recreational impairment is nested within the overall Roanoke River Bacteria TMDL Watershed. Allocation scenario development is for the entire drainage to provide pollutant reductions for all watersheds contributing to the bacteria impairment. The entirety of the approved TMDL and allocations can be viewed at http://www.deq.virginia.gov. 1996 & 2002 fecal coliform (FC) observations are the basis for the original Roanoke bacteria impaired listing. The 2010 total bacteria impaired length is 29.51 miles and 350.06 acres in Smith Mountain Lake.

4ARNF016.80 (Rt. 712 Bridge) 2012 assessment finds four of 12 Escherichia coli (E.coli) samples exceed the 235 cfu/10 ml instantaneous criterion; exceeding values range from 520 to 1000 cfu/100 ml.

4ARNF013.66 (Rt. 603 Bridge) The 2012 assessment finds Escherichia coli (E.coli) bacteria exceeds the 235 cfu/100 ml instantaneous criterion in nine of 36 samples. E.coli exceedances range from 250 to 1400 cfu/100 ml. Seventeen of 45 E.coli samples exceed the instantaneous criterion within the 2010 data window. E.coli exceedances range from 280 to 1500 cfu/100 ml. Sufficient data does not exist to determine the new WQS geometric mean. The 2008 Integrated Report (IR) finds E.coli bacteria exceeds the 235 cfu/100 ml instantaneous criterion in 14 of 33 samples with the same range of exceedance as 2010. The former WQS E.coli geomean, minimum two samples/calendar month, of 126 cfu/100 ml is exceeded in three of six calculations. The 2006 IR reports E.coli bacteria exceeds the 235 cfu/100 ml instantaneous criterion in 12 of 21 samples with exceedances also ranging from 280 to 1500 cfu/100 ml. The former E.coli WQS geomean exceeds in three of four calculations.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
15.6

Roanoke River, North Fork

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • Unspecified Domestic Waste
  • Wastes from Pets
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L02R-01-PH - Bradshaw Creek

Location: Bradshaw Creek from its mouth on the N.F. Roanoke River upstream to its headwaters.
City/County Montgomery Co., Roanoke Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
pH / 5C
4ABDC002.36 (Rt. 629 Bridge)- The aquatic life use is impaired based on 2010 pH data. Four of 16 pH observations exceed the pH criterion of 6.5. The range of exceeding values are 6.1 to 6.3 SU. There are no additional data beyond the 2010 Integrated Report (IR).

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
pH / 5C
Total impaired size by water type:
8.72

Bradshaw Creek

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Natural Conditions - Water Quality Standards Use Attainability Analyses Needed
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L02R-02-BAC - Wilson Creek and Wilson Creek, UT

Location: Wilson Creek to include a northern unnamed tributary from its headwaters downstream to the Wilson Creek confluence on the North Fork Roanoke River. Note: The northern arm extends upstream from mainstem Wilson Creek to near the Rt. 114 & Rt. 460 intersection behind a commercially developed area near New River Valley Mall.
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A
The Wilson Creek Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved 8/02/2006 [Fed ID 23395] and SWCB approved 6/27/2007. Wilson Creek is originally 303(d) listed for bacteria (fecal coliform) with the 2002 assessment. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters]. The 6.92 mile bacteria impairment remains.

4AWLN000.40 - E.coli data within the 2010 data window find 11 of 23 samples exceed the WQS 235 cfu/100 ml instantaneous criterion. There are no additional data beyond the 2008 assessment where 13 of 27 E. coli samples exceed the instantaneous criterion. The minimum exceedance is 300 cfu/100 ml with a maximum of 2200. In 2006 twelve of 23 E. coli samples exceed the instantaneous criterion of 235 cfu/100 ml with the same range of exceedance.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
6.92

Wilson Creek and Wilson Creek, UT

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • Unspecified Domestic Waste
  • Wastes from Pets
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L02R-03-BAC - Bradshaw Creek

Location: Bradshaw Creek from its mouth on the N.F. Roanoke River upstream to its headwaters.
City/County Montgomery Co., Roanoke Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A
The 2010 assessment finds Bradshaw Creek does not support the Recreation Use. Escherichia coli (E.coli) exceed the WQS instantaneous criterion. The Roanoke River Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved on 8/02/2006 [Fed ID 24538] with SWCB approval on 9/07/2006. Bradshaw Creek is nested within the Roanoke River Bacteria TMDL Watershed. Allocation scenario development is for the entire drainage to provide pollutant reductions for all watersheds contributing to the bacteria impairment. The entirety of the approved TMDL and allocations can be viewed at http://www.deq.virginia.gov.

4ABDC002.36 (Rt. 629 Bridge)- There are no additional data beyond the 2010 IR. The 2010 assessment finds E.coli exceeds the 235 cfu/100 ml instantaneous criterion in two of 12 observations. Values in excess of the criterion are 250 and greater than 2000 cfu/100 ml.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
8.72

Bradshaw Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

Roanoke and Yadkin River Basins

Fact sheet prepared for Montgomery Co.

Cause Group Code: L12L-01-PCB - Roanoke River, Blackwater River, Smith Mountain Lake, Tinker Creek and Peters Creek

Location: Roanoke River from the confluence of the North and South Forks downstream to Smith Mtn. Dam. Blackwater River from the Rt. 122 crossing downstream to its confluence with the Roanoke River in Smith Mtn. Lake. Peters Creek from the Rt. 460 Bridge downstream to its confluence on the Roanoke River. Tinker Creek from the mouth of Deer Branch downstream to the Tinker Creek confluence on the Roanoke River.
City/County Botetourt Co., Montgomery Co., Roanoke City, Roanoke Co., Salem City
Use(s): Fish Consumption, Public Water Supply, Wildlife
Cause(s) /
VA Category:
PCB in Fish Tissue / 4A
The waters of the Roanoke River (31.74 miles), Blackwater River (11.29 miles), Peters Creek (2.52 miles), Tinker Creek (5.33 miles) and Smith Mountain Lake (19,789.92 acres) are under a Virginia Department of Health (VDH) Fish Consumption Advisory for Polychlorinated Biphenols (PCB) issued 7/27/05. The VDH Advisory is based on fish tissue found to originally contain greater than 50 parts per billion (ppb) of PCBs. The DEQ Water Quality Standard (WQS) based tissue value (TV) criterion is 20 ppb in fish tissue. The previous advisory (issued 10/20/03) recommended that no more than two eight-ounce meals per month of flathead catfish (less than 32 inches in size), striped bass, gizzard shad, redhorse sucker, largemouth bass and carp should be consumed. Per the previous advisory, flathead catfish (greater than 32 inches in size) should not be eaten. The advisory has been updated to also recommend that no more than two eight-ounce meals per month of channel catfish should be consumed.

The Roanoke River PCB TMDL Study is U.S. Environmental Protection Agency (EPA) approved on 4/9/2010 and State Water Control Board (SWCB) approved 12/9/2010. The following Federal Identification Numbers by watershed:

L03R Roanoke River: 38624, 38625, 38627, 38629, 38543, 38630
L04R Roanoke River: 24537, 38552, 38632, 38633, 38634, 38635, 38636
Peters Creek: 38468
L05R Tinker Creek: 38467

Fish tissue collections from locations on the Roanoke mainstem, Blackwater River, Mason Creek, Mudlick Creek, Paint Bank Branch, Peters Creek, Tinker Creek and the North and South Forks of the Roanoke River are reviewed by the VDH in making an advisory determination. A complete listing of collection sites and associated fish tissue data are available at http://www.deq.virginia.gov/fishtissue/fishtissue.html. A more detailed presentation of the data can also be found using an interactive mapping application at http://www.deq.virginia.gov/. The VDH Advisory information is also available via the web at http://www.vdh.virginia.gov/epidemiology/DEE/PublicHealthToxicology/Advisories/index.htm.

Thirty day deployment of Semi-Permeable Membrane Devices (SPMD) or virtual fish in 2008 find exceedances of the WQS PCB water column criterion of 0.00064 micrograms per liter (µg/L) or 640 picograms per liter (pg/L). Exceedances are recorded for both the Fish Consumption Use via WQS 'Other Waters' (15.23 miles) as well as the Wildlife Use (15.23 miles) and for the 'Public Water Supply Use' (PWS 4.78 miles) human health criterion at the stations listed below. The 640 pg/L criterion applies to both Uses. The 'PCB in Water Column' impairment on the mainstem of the Roanoke River extends from the confluence of Mason Creek downstream to the mouth of Back Creek (miles). The 'PCB in Water Column' impairment overlays a 15.23 mile portion of the overall VDH Fish Consumption Advisory area above Smith Mountain Lake.

4AROA207.08- (Near Memorial Bridge downstream of Peters Creek)- 2008 SPMD 'OE'. Exceeds PCB WQS 'Other Waters' 640 pg/L criterion from one of two deployments at 642.

4AROA204.76 (Downstream of Ore Br., near VA Scrap Iron Co. above American Visco)- Two 2008 SPMD deployments find exceedance of the WQS 'Other Waters' 640 pg/L criterion at 987 and 3,014 pg/L.

4AROA202.20 (13th Street Bridge - above STP)- Two 2008 SPMD deployments find exceedance of the WQS 'Other Waters' 640 pg/L criterion at 1,376 and 3,044 pg/L.

4AROA199.20 (Blue Ridge Parkway Bridge - Niagara)- Two 2008 SPMD deployments find exceedance of the WQS 'Other Waters' and 'PWS' 640 pg/L criterion at 1,213 and 1,588 pg/L.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
PCB in Fish Tissue / 4A
Total impaired size by water type:
2.22

Roanoke River, Blackwater River, Smith Mountain Lake, Tinker Creek and Peters Creek

Size within: Montgomery Co.

Fish Consumption


Sources:

  • Landfills
  • Source Unknown
  • Urban Runoff/Storm Sewers
  • Wet Weather Discharges (Non-Point Source)
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N18R-01-BAC - Crab Creek

Location: The upstream limit is the Crab Creek headwaters on the Ironto Quad. The downstream limit is at the Crab Creek mouth on the New River about 1.5 mi upstream of the Rt. 114 Bridge and downstream of Radford, Virginia (Riner, Blacksburg and Radford North Quads).
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A
The Crab Creek Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved on 8/10/2004 [Fed ID 18594 / 23405] and SWCB approved 12/02/2004 (formerly VAW-N18R-01). The waters are initially 303(d) Listed with the 2002 Assessment for fecal coliform (FC) bacteria causing non-support of the Recreational Use for 12.01 miles. The TMDL Study and allocations can be viewed at http://www.deq.virginia.gov. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

9-CBC009.81 (Rt. 111 Bridge) There are no additional data beyond the 2008 IR where the 2010 data window finds four of 15 E.coli samples exceed the 235 cfu/100 ml instantaneous criterion. Exceedances range from 250 to greater than 2000 cfu/100 ml. Three non-exceeding E.coli observations remain within the 2012 data window. The 2008 assessment finds six of 18 E.coli samples exceed the instantaneous criterion and six of 15 exceed in 2006. The range of exceeding values is from 400 to greater than 2000 cfu/100 ml in 2008 and 2006.

9-CBC006.35 (Rt. 661 Bridge) Both the 2012 and 2010 data windows find four of 12 E.coli samples exceeding the instantaneous criterion. The range of exceedance is from 380 to 950 cfu/100 ml. E.coli data within the 2008 data window are three of six exceeding values. The 2006 assessment reports E.coli exceeds the WQS instantaneous criterion of 235 cfu/100 ml in eight of 16 observations. Exceeding values range from 250 to >800 cfu/100 ml. This station is located upstream of the former Christiansburg outfall.

9-CBC004.38 (Rt. 660 Bridge) There are no additional data beyond the 2010 data window. Five of 15 remaining Escherichia coli (E.coli) observations exceed the 235 cfu/100 ml instantaneous criterion ranging from 250 to 1200 cfu/100 ml. Data within the 2010 data window find exceedances ranging from 250 to 1200 cfu/100 ml in 14 of 35 observations. E.coli exceeds the 235 cfu/100 ml WQS instantaneous criterion in 16 of 33 observations within the 2008 data window. Exceeding values range from 280 to greater than 800 cfu/100 ml. 2006 E.coli results find 22 of 40 observations in excess of the instantaneous criterion and the same range of exceedance.

9-CBC001.00 (Route 663 Bridge near Walton) There are no additional data beyond the 2010 data window. Two of 15 remaining E.coli observations exceed the instantaneous criterion at 250 and 1300 cfu/100 ml. 2010 values exceeding the instantaneous criterion range from 250 to 1300 cfu/100 ml in 10 of 35 samples. Nine of 27 E.coli samples exceed the instantaneous criterion ranging from 260 to greater than 800 cfu/100 ml in 2008. The 2006 Integrated Report (IR) finds nine of 23 E.coli samples exceed the instantaneous criterion. The range of exceeding values is the same as in 2008.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
12.01

Crab Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Discharges from Municipal Separate Storm Sewer Systems (MS4)
  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • Unspecified Domestic Waste
  • Wastes from Pets
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N18R-01-BEN - Crab Creek

Location: The upstream limit is the Crab Creek headwaters on the Ironto Quad. The downstream limit is at the Crab Creek mouth on the New River about 1.5 mi upstream of the Rt. 114 Bridge and downstream of Radford, Virginia (Riner, Blacksburg and Radford North Quads).
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Benthic-Macroinvertebrate Bioassessments / 4A
The 1996 303(d) Listing of the Crab Creek General Standard (Benthic) Total Maximum Daily Load (TMDL) is U.S. EPA approved 8/10/2004 [Sediment- Fed ID 18595 / 23406]. The SWCB approved the TMDL on 12/02/2004 (formerly VAW-N18R-01). The TMDL identifies sediment to be the primary stressor, with organic matter and nutrient enrichment as additional stressors. The waters remain impaired for the aquatic life use for 12.01 miles.

Natural seasonal effects are noted at the sites below. Pollution tolerant families are dominant in both seasons, the midge family Chironomidae in spring and the caddisfly family Hydropsychidae in fall. Beginning in spring 2002, Toms Creek was determined to be a more suitable ecoregion reference site because of similarity in size and watershed characteristics than the previous reference site (Sinking Creek, 9-SNK012.06). Agricultural and urban NPS runoff impact Crab Creek. Habitat impacts to this reach result in fine sediment deposition causing stream substrates to become embedded from bank erosion, altered hydrology, and degraded riparian buffers due to residences, roads, and railroad tracks. An apparent nutrient rich environment all contribute to the benthic impairment.

9-CBC006.35- Bio 'IM'; Two 2008 Virginia Stream Condition Index (VSCI) surveys with an average score of 39.36 are within the 2012 data window. Three VSCI surveys (2003 & 2008 result in an average VSCI score of 43.33 are within the 2010 data window. Moderately pollution tolerant to pollution tolerant organisms (oligochaetes, chironomidae, hydropsychidae, and elmidae) are dominant in both seasons. Habitat impacts to this reach result in fine sediment deposition that causes stream substrates to become embedded, altered hydrology, and degraded riparian buffers due to roads. The 2008 IR reports five RBP II surveys scoring- 2000 spring 47.83, fall- 34.78; 2002 spring- 52.17, fall- 59.09 and 2003 spring- 65.22. Seasonal 5 year Spring score 55.07 and Fall score 46.94.

9-CBC004.38- Bio 'IM'; Two 2008 VSCI surveys lie within the 2012 data window with an average score of 53.03. The 2010 data window finds three VSCI surveys (2003 & 2008) with an average score of 52.28 are produced within the 2010 data window. There is some difference in the biological condition scores between seasons. Fall samples showed an increase of %mayflies over the spring samples. Agricultural and urban NPS runoff impact Crab Creek. Habitat impacts to this reach result in fine sediment deposition that causes stream substrates to become embedded, bank erosion from altered hydrology, and degraded riparian buffers due to pastures, railroad tracks, and the Christiansburg STP. Five RBP II surveys scoring- 2000 spring- 39.13, fall- 34.78; 2002 spring- 65.22, fall- 59.09 and 2003 spring- 69.57. Seasonal 5 year Spring score 57.97; Fall score 46.94 are reported in the 2008 IR.

9-CBC001.00- Bio 'IM' The 2012 data window finds an average score of 55.04 from two surveys (2008). The 2010 IR finds impairment remains from three VSCI surveys (2003 & 2008) with an average score of 60.0. The moderately pollution tolerant midge family Chironomidae is dominant in both seasons. Impacts to the benthos and stream habitat are the same as noted at 9-CBC004.38. The 2008 IR reports three VSCI surveys (2002-2003) with an average score of 58.43. Pollution tolerant families are dominant in spring and fall, the midge family Chironomidae in spring and the caddisfly family Hydropsychidae in fall. Impacts to the benthic community and stream habitat are the same as noted at 9-CBC004.38.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Benthic-Macroinvertebrate Bioassessments / 4A
Total impaired size by water type:
12.01

Crab Creek

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Discharges from Municipal Separate Storm Sewer Systems (MS4)
  • Loss of Riparian Habitat
  • Municipal (Urbanized High Density Area)
  • Post-development Erosion and Sedimentation
  • Sediment Resuspension (Clean Sediment)
  • Sediment Resuspension (Contaminated Sediment)
  • Streambank Modifications/destabilization
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N18R-03-BAC - Plum Creek

Location: The upstream limit is the headwaters of Plum Creek extending downstream to its mouth on the New River.
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 5A
This 2004 303(d) Listed water extends for 4.51 miles on Plum Creek. The original Listing basis is two of nine fecal coliform observations exceeding the former 400 cfu/100 ml instantaneous criterion. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

9-PLM000.60 (Rt. 11 just above the mouth of Plum Creek) There are no additional data beyond the 2010 IR. Both the 2012 and 2010 assessments find Escherichia coli (E.coli) exceeds the WQS 235 cfu/100 ml instantaneous criterion in four of 12 observations. Values in excess of the instantaneous criterion range from 240 to 1020 cfu/100 ml. Fecal coliform (FC) exceeds the former WQS 400 cfu/100 ml instantaneous criterion in two of 11 observations in 2006 and 2008. Values in excess of the former standard are 1100 and 1500 cfu/100 ml.

9PLM-2-NCNR (Plum Cr. Rd. Bridge Off Rt. 11) The 2012 assessment finds full support from E.coli results where no exceedances are recorded from 11 samples. This station is located near the headwaters of Plum Cr. The maximum E.coli result is 225 cfu/100 ml.

Additional data needed to determine the listing status (impaired/not impaired) of these waters in subsequent assessment cycles.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 5A
Total impaired size by water type:
4.57

Plum Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N21R-01-BAC - Little River (Lower)

Location: The upper limit begins at the confluence of Dodd Creek (N19R) extending downstream to the Little River mouth on the New River (N21R).
City/County Floyd Co., Montgomery Co., Pulaski Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 5A, Fecal Coliform / 5A
Exceedances of the former WQS fecal coliform (FC) bacteria instantaneous criterion of 1000 cfu/100 ml required the initial 2002 bacteria 303(d) Listing based on data from the United States Geological Survey (USGS) station 03170000. Two of 14 observations exceed the former instantaneous criterion. Application of the revised 400 cfu/100 ml instantaneous criterion would result in four of 14 exceedances above the former criterion ranging from 420 to 14,900 cfu/100 ml. Due to the previous 2002 1.35 mile riverine 303(d) Listing from Meadow Creek confluence downstream to the backwaters of Little River Reservoir and 2004 bacteria results from 9-LRV000.34 the riverine impairment is extended 0.48 miles downstream. The 2012 Integrated Report (IR) extends the upper limit to the confluence of Dodd Creek incorporating the West Fork of Little River. The impounded waters (60.44 acres) of Little River Reservoir are now bacteria impaired and were incorporated with the 2008 IR.

The 2004 IR establishes a 13.33 mile bacteria impairment at 9-LRV032.72 where three of eight fecal coliform bacteria observations exceed the former WQS 400 cfu/100 ml instantaneous criterion within the 2004 data window. Exceedances range from 600 to 1100 cfu/100 ml. The 2004 303(d) List describes the impaired extent from the end of Rt. 706 downstream to the confluence of Sidney Creek. This 2004 portion of Little River is separate from the original 2002 bacteria 303(d) Listing because of hydrology and the lack of bacteria data between the two initial listings on the mainstem of Little River.

Additional bacteria sample collection within the 2008 and 2010 data windows define the entire 39.05 mile impairment below. Future assessment and 303(d) Listings replace fecal coliform with Escherichia coli (E.coli) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

West Fork Little River:
9-LWF004.55 (Rt 8 Bridge, North of Floyd)- Five of 12 Escherichia coli (E.coli) samples exceed the 235 cfu/100 ml instantaneous criterion in 2012. Excessive values range from 280 to greater than 2000 cfu/100 ml.

Little River:
9-LRV044.49 (Rt. 615 Bridge) There are no additional data beyond the 2008 IR. E.coli exceedances are found in three of 11 observations within the 2008 and 2010 data windows. Exceeding values greater than the instantaneous criterion of 235 cfu/100 ml range from 380 to greater than 2000 cfu/100 ml. Two exceedances from eight E.coli observations exceed the instantaneous criterion in 2006. Exceeding values are 380 and 450 cfu/100 ml.

9-LRV032.72 (Rt. 617 Bridge) There are no additional data beyond the 2006 IR where four of 11 FC observations exceed the former WQS 400 cfu/100 ml instantaneous criterion. Exceedances range from 600 to 3,300 cfu/100 ml. The same total observations and exceedances are found within the 2008 data window. The remaining FC data within the 2010 data window find one of three samples in excess of the former instantaneous criterion at 3300 cfu/100 ml. There are no Escherichia coli (E.coli) data to assess.

9-LRV016.68 (Rt. 787 Bridge) The 2012 assessment finds two of 12 Escherichia coli (E.coli) samples exceed the 235 cfu/100 ml instantaneous criterion at 380 and 1200 cfu/100 ml. Data within the 2010 data window find one of two FC samples exceed the former WQS instantaneous criterion of 400 cfu/100 ml at greater than 8000 cfu/100 ml. There are no Escherichia coli (E.coli) data to assess. Two of 10 FC samples exceed the instantaneous criterion within both the 2006 and 2008 data windows. Each excursion is 900 and greater than 8000 cfu/100 ml. There are no additional beyond the 2006 IR. The same total observations and exceedances are found within the 2008 data window.

9-LRV009.11 (Route 693 Bridge at Graysontown) Two of 12 Escherichia coli (E.coli) samples exceed the 235 cfu/100 ml instantaneous criterion at 400 and 1000 cfu/100 ml in 2012. Data within the 2010 data window find one of three samples in excess of the former WQS instantaneous criterion of 400 cfu/100 ml at 500 cfu/100 ml. Data within both the 2006 and 2008 Irs reveal FC exceeds the instantaneous criterion in two of 11 samples at 500 and 600 cfu/100 ml. The same total observations and exceedances are found within the 2008 data window. Note: USGS 03170000 (Little R. at Graysontown) an original 2002 listing station is at the same location.

9-LRV000.44 (Above Little River Dam) There are no additional data beyond the 2010 IR where E.coli exceeds the 235 cfu/100 ml instantaneous criterion in two of seven observations. Exceeding values are 420 and 1000 cfu/100 ml.

9-LRV000.34 (Route 605 Bridge- below Little River Dam) Both 2012 and 2010 E.coli data exceed the 235 cfu/100 ml instantaneous criterion in three of 12 samples. Values in excess of the criterion range from 250 to greater than 2000 cfu/100 ml. Data within the 2008 data window find four of 14 FC samples in excess of the former 400 cfu/100 ml criterion. The range of exceedance is from 500 cfu/100 ml to 7300. The same four exceeding values are found in the 2006 IR from 20 FC observations.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 5A
Total impaired size by water type:
60.44 1.83

Little River (Lower)

Size within: Montgomery Co.

Recreation


Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Fecal Coliform / 5A
Total impaired size by water type:
21.34

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N21R-01-BEN - Little River

Location: Little River from the mouth of the West Fork of Little River downstream to the confluence of Sidney Creek.
City/County Floyd Co., Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Benthic-Macroinvertebrate Bioassessments / 5A
The 2008 initial 303(d) Listing continues. The 2008, 2010 and 2012 assessments find the Aquatic Life Use is impaired due to impacts to the benthic community for 16.99 miles.

9-LRV035.03- (Upstream of Laurel Fork Mouth) Bio 'IM' There are no additional data beyond the 2008 Integrated Report (IR). Two 2004 Virginia Stream Condition Index (VSCI) surveys with an average score of 57.7. Spring score is 52.2 and fall 62.1. There is less taxonomic diversity in the fall sample, but included a higher percentage of pollution sensitive organisms. In-stream habitat impacts include sediment deposition and lack of diversity in substrate and cover available for fish and benthic macroinvertebrates. The riparian buffer on one bank was impacted by hay fields. Approximately 40% of the land cover upstream of this station is agriculture, potentially impacting the amount of sediment entering the river.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Benthic-Macroinvertebrate Bioassessments / 5A
Total impaired size by water type:
13.33

Little River

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Loss of Riparian Habitat
  • Sediment Resuspension (Clean Sediment)
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N21R-02-BAC - Meadow Creek

Location: The Meadow Creek mainstem from the Mill Creek confluence downstream to the Meadow Creek mouth on Little River (Radford South Quad).
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 5A
Fecal coliform (FC) excursions of the former 1000 cfu/100 ml instantaneous criterion found in 2002 results in the initial 303(d) Listing of these waters for 4.49 miles. Exceedances are found in three of four observations and one geometric mean calculation exceedance is recorded in excess of the former 2002 criterion of 200 cfu/100 ml. Additional sample collections within the 2004 IR data window also produce exceedances of the former 400 cfu/100 ml instantaneous criterion in seven of 12 observations with one geometric mean excursion of the former criterion. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

9-MDW004.62- Both 2012 and 2010 data produce six exceeding values from 12 observations of the Escherichia coli (E.coli) 235 cfu/100 ml instantaneous criterion. Values in excess of the criterion range from 280 to greater than 2000 cfu/100 ml. The 2006 IR finds FC exceedances of the former WQS 400 cfu/100 ml instantaneous criterion in six of 11 observations. The range of exceeding values is from 700 to greater than 8000 cfu/100 ml. FC exceedances and total observations within the 2008 data window are the same.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 5A
Total impaired size by water type:
4.49

Meadow Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N21R-03-BAC - Mill Creek, Poplar Branch, Mill Creek UTs (XDE & XDF)

Location: The upper limit begins at the headwaters of Mill Creek on the Riner Quad and extends downstream to the Mill Creek confluence with Meadow Creek at the Rt. 600 Bridge on the Radford South Quad (7.04 miles). This impairment also includes Poplar Branch and its tributaries form its mouth on Mill Creek to its headwaters as well as to unnamed tributaries to Mill Creek (XDE & XDF).
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 4A, Fecal Coliform / 4A
The Mill Creek Bacteria Total Maximum Daily Load (TMDL) is U.S. EPA approved on 6/05/2002 [Fed ID 9453 / 19986] and SWCB approved 6/17/2004 (formerly VAW-N21R-03). The Bacteria Implementation Plan (IP) received SWCB approval on 6/27/2007. The 1996 / 2002 / 2004 impaired waters now extend to the headwaters of Mill Creek (7.04 miles). 2002 tributary additions include Poplar Branch (4.57 miles) and two unnamed tributaries (XDE 1.72 miles and XDF 1.91 miles). The waters are impaired for a total of 15.25 miles.

The waters are originally 303(d) Listed based on the former fecal coliform (FC) WQS instantaneous criterion of 1000 cfu/100 ml and 200 geometric mean. The 2004 Integrated Report (IR) records exceedances of both the former FC 400 cfu/100 ml instantaneous criterion and geometric mean criterion of 200 cfu/100 ml. Listed below are the monitored sites showing fecal coliform instantaneous excursions / with total sample collections; (maximum) and geometric mean calculation exceedances / with total calculations where applicable. Instantaneous Escherichia coli (E. coli) single observations from the 2008 Integrated Report are listed next (value). Each exceed the WQS instantaneous criterion of 235 cfu/100 ml. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

Below are listed Escherichia coli (E.coli) data from the 2010 data window. No geometric mean data are available for assessment.

9-MLC005.44- The 2012 data window produces 11 of 24 Escherichia coli (E.coli) excursions of the 235 cfu/100 ml instantaneous criterion. The exceeding values range from 280 to 600 cfu/100 ml. E.coli exceeds the 235 cfu/100 ml instantaneous criterion in four of 12 samples in 2010. The exceeding values range from 250 to 580 cfu/100 ml.

9-MLC002.59 (Rt. 669 Bridge)- The 2012 assessment reports 14 of 24 E.coli samples exceeding the 235 cfu/100 ml instantaneous criterion ranging from 280 to greater than 2000 cfu/100 ml. Seven of 12 E.coli samples exceed the 235 cfu/100 ml instantaneous criterion in 2010. Values in excess range from 580 to greater than 2000 cfu/100 ml.

9-MLC001.53 (Rt. 693, Childress)- 2012 E.coli excursions of the 235 cfu/10 ml instantaneous criterion are found in eight of 24 samples. Exceeding values range from 250 to 1100 cfu/100 ml. 2010 E.coli excursions are found in three of 12 samples. Exceeding values range from 300 to 1100 cfu/100 ml.

Data below reflect the 2004, 2006 and 2008 IR data windows as there were no additional data beyond the 2006 IR in the 2008 assessment. Two ambient fixed sites 9-MLC005.44 and 9-MLC001.53 are included with the non-fixed sites below.

2004 IR results:
Mill Creek
9-MLC000.17 (Rt. 600 Bridge) - 3/5; (3900); 1/1 geomean; E.coli- 1/1 (800).
9-MLC001.31 (Rt. 693 Bridge) - 3/5; (2300); 1/1 geomean; E.coli- 1/1 (800).
9-MLC001.53 (Rt. 693, Childress) - 3/6; (2300).
9-MLC002.74 (Private Road off Rt. 616) - 4/5; (>8000); 1/1 geomean; E.coli- 1/1 (800).
9-MLC005.44 (Rt. 8 Bridge-above Riner STP)- 18/25; (2500); E.coli- 1/1 (800).
9-MLC006.00 (Private road Rt. 616)- 2/5; (>8000); 0/1 geomean; E.coli- 1/1 (>800).

Poplar Branch
9-PPL000.01 (Private Road at mouth)- 1/1; (>8000).
9-PPL001.27 (Rt. 616 Bridge)- 2/2 (2800).

Mill Creek Unnamed Tributaries
9-XDE000.95 (Rt. 678 Bridge)- 4/5; (>8000); 1/1 geomean; E.coli- 1/1 (>800).
9-XDF000.11 (Private road Rt. 669)- 4/5;(2600); 1/1 geomean; E.coli- 1/1 (>800).

2006 IR results for 2006 stations within the data window:
Mill Creek
9-MLC005.44- 2006 FC exceeds the instantaneous criterion in 10 of 15 observations. Exceeding values range from 600 to 2000 cfu/100 ml. 2008 FC exceeds in eight of 11 samples.
9-MLC002.74- 2006 FC exceeds the WQS 400 cfu/100 ml instantaneous criterion in 10 of 12 observations. The maximum exceedance is greater than 8000 and the minimum is 500 cfu/100 ml. 2008 FC exceeds in nine of 11 observations.
9-MLC001.53- 2006 FC excursions are found in five of eight samples with a maximum of 2300 cfu/100 ml. 2008 five of eight FC samples exceed.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 4A
Total impaired size by water type:
7.05

Mill Creek, Poplar Branch, Mill Creek UTs (XDE & XDF)

Size within: Montgomery Co.

Recreation


Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Fecal Coliform / 4A
Total impaired size by water type:
8.2

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N21R-05-BAC - Brush Creek

Location: Brush Creek from the first bridge on Route 617 south of the junction of Routes 617 and 601 downstream to the Brush Creek mouth on Little River.
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 5A
The 2004 Recreational Use impairment continues for 5.76 miles originally due to fecal coliform (FC) bacteria exceedances of the former instantaneous criterion of 400 cfu/100 ml. Escherichia coli (E.coli) replaces fecal coliform (FC) bacteria as the indicator as per Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters].

9-BSH000.05 (Rt. 617 Bridge) The 2012 assessment finds six of 11 Escherichia coli (E.coli) observations exceed the 235 cfu/100 ml instantaneous criterion. Excessive values range from 250 to greater than 2000 cfu/100 ml. These waters were initially Listed for fecal coliform (FC) in 2004 with three of eight FC samples exceeding the former WQS instantaneous criterion of 400 cfu/10 ml. The 2010 data window finds two of two samples exceeding the former instantaneous criterion at 800 and 1100 cfu/100 ml. The 2004, 2006 and 2008 data windows find five of 10 FC samples exceeding the former instantaneous criterion. The maximum exceedance range is from 700 to 1300 cfu/100 ml. There were no Escherichia coli (E.coli) data to assess at that time.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 5A
Total impaired size by water type:
5.76

Brush Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Livestock (Grazing or Feeding Operations)
  • On-site Treatment Systems (Septic Systems and Similar Decentralized Systems)
  • Unspecified Domestic Waste
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N22R-02-BAC - Stroubles Creek

Location: The upstream end is at the Duck Pond dam on the southwest end of the VPI&SU campus on the Blacksburg Quad. The downstream end is at the Walls Branch mouth on Stroubles Creek.
City/County Montgomery Co.
Use(s): Recreation
Cause(s) /
VA Category:
Escherichia coli / 5A
Fecal coliform (FC) bacteria exceedances of the former 1000 cfu/100 ml WQS instantaneous criterion in 2002 cause impairment of the Recreational Use. Three of 23 observations exceed the former criterion at station 9-STE002.41
Rt. 705 Bridge (Coal Hollow Road). The 2004 IR at 9-STE002.41 records four exceedances from 35 samples in excess of the current 400 cfu/100 ml WQS instantaneous criterion. Escherichia coli (E.coli) bacteria replaced fecal coliform (FC) in 2006 as the indicator as required by Water Quality Standards [9 VAC 25-260-170. Bacteria; other waters]. 2008 results find E.coli exceedances at 9-STE002.41 are three of 31 samples and resulted in 2.10 miles de-listed with the 2008 IR.

This 2.10 mile portion, delisted (partial - length) with the 2008 assessment, but returned with the 2010 303(d) Listing. The original 7.08 mile impairment returned with the 2010 assessment.

9-STE002.41- (Rt. 705 Bridge- Coal Hollow Road) The 2012 data window finds eight of 36 observations exceeding the 235 cfu/100 ml instantaneous criterion. Exceeding values range from 280 to greater than 2000 cfu/100 ml. 2010 Escherichia coli (E. coli ) samples find eight exceed the 235 cfu/100 ml criterion from a total of 32 samples with the same range of exceedance.

9-STE007.29 (Rt. 657 Bridge below old B'Burg STP) The 2012 IR reports eight E.coli samples exceed the instantaneous criterion from a total of 33. Exceeding values range from 280 to greater than 2000 cfu/100 ml. 2010 results find eight exceed from a total of 32 samples with the same range of exceedance as 2012. E.coli results exceed in five of 25 samples. The 2008 exceedance range is from 300 to greater than 2000 cfu/100 ml. 2006 E.coli samples reveal five exceed the instantaneous criterion from a total of 16. Exceeding values range from 490 to greater than 5000 cfu/100 ml.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Escherichia coli / 5A
Total impaired size by water type:
7.08

Stroubles Creek

Size within: Montgomery Co.

Recreation


Sources:

  • Discharges from Municipal Separate Storm Sewer Systems (MS4)
  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • Unspecified Domestic Waste
  • Wastes from Pets
  • Wet Weather Discharges (Non-Point Source)
  • Wildlife Other than Waterfowl
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N22R-02-BEN - Stroubles Creek

Location: These mainstem waters extend from the Walls Branch mouth upstream to the Duck Pond located on the VPI&SU Campus.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Benthic-Macroinvertebrate Bioassessments / 4A
The Stroubles Creek General Standard (Benthic- Sediment) Total Maximum Daily Load (TMDL) is U.S. EPA approved on 1/28/2004 [Fed ID: 21904]. The SWCB approved the Study on 6/17/2004. The Benthic (Sediment) Implementation Plan (IP) is SWCB approved (9/27/2006) (formerly VAW-N22R-02). The 1996 original 303(d) Listed 4.98 mile waters remain impaired for contravention of the General Standard (Benthic).

9-STE007.29- Bio 'IM' Nine Virginia Stream Condition Index (VSCI) surveys (2006 - 2010) with an average score of 46.82. The moderately pollution tolerant caddisfly family Hydropsychidae and fly family Chironomidae were the second most common macroinvertebrates during these surveys. This community indicates the benthic community is exposed to moderate level of pollution, possibly a nutrient source that provides the Hydropsychidae the opportunity to be second most dominant. Thus, this stream reach shows evidence of year long pollution. Habitat condition at this station is suboptimal, impacted by sediment and poor riparian vegetation zones. The mostly open canopy allows for increased water temperatures and primary production resulting in large mats of algae and bacteria on the stream substrate during the summer and fall. The 2010 assessment found impairment from seven VSCI surveys (2003 & 2006 - 2008) with an average score of 45.6. An average score of 45.6 is also found in 2008 from six VSCI surveys (2001 - 2003 & 2006).

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Benthic-Macroinvertebrate Bioassessments / 4A
Total impaired size by water type:
4.98

Stroubles Creek

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Discharges from Municipal Separate Storm Sewer Systems (MS4)
  • Livestock (Grazing or Feeding Operations)
  • Municipal (Urbanized High Density Area)
  • Sediment Resuspension (Clean Sediment)
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N22R-04-TEMP - Toms Creek

Location: Toms Creek mainstem waters just below the Poverty Creek confluence upstream to its headwaters.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Temperature, water / 5C
The initial 2008 5.23 mile impairment is extended upstream 5.72 miles with data provided by the National Committee for the New River (NCNR). The 2012 Integrated Report finds the Aquatic Life Use is impaired for 10.95 miles based on the initial 2008 temperature exceedances and 2012 Citizen temperature measurements of the Class V 21°C stockable trout water criterion.

9TOM-1-NCNR (Off Glade Rd. at Heritage Park Trail) Two temperature measurements exceed the Class V 21°C criterion at 24.5°C on 7/19/2010 and 24.0°C on 8/19/2010 from 10 measurements for 2012.

9-TOM005.32- (Rt. 725 Bridge upstream of Poverty Creek) Both the 2010 and 2008 IRs find two temperature measurements exceed the Class V 21°C criterion from 13 observations. Exceedances occur on 8/15/2005 at 24.4°C and 21.4 °C on 8/15/2006. There are no additional data beyond the 2008 Integrated Report (IR).

9TOM-2-NCNR (Poverty Creek Rd. Bridge) Three temperature exceedances of the Class V 21°C criterion occur on 6/16/2010 at 22°C; 7/19/2010 at 24.0°C and 8/16/2010 at 24.5°C from 11 measurements for 2012.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Temperature, water / 5C
Total impaired size by water type:
10.95

Toms Creek

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Source Unknown
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N22R-06-BEN - Unnamed Tributaries XEJ and XEH to Slate Branch

Location: Unnamed Tributary XEH from its mouth on Slate Branch upstream to its headwaters. And Unnamed Tributary XEJ from its mouth on Unnamed Tributary XEH upstream to its headwaters.
City/County Montgomery Co.
Use(s): Aquatic Life
Cause(s) /
VA Category:
Benthic-Macroinvertebrate Bioassessments / 5A
The 2008 assessment finds the Aquatic Life Use via the General Standard (Benthic) is impaired for a total of 2.64 miles. Unnamed Tributary to Slate Branch- XEH for 1.79 miles and Unnamed Tributary XEJ to XEH for 0.85 miles. There are no additional data beyond the 2008 Integrated Report (IR).

9-XEH000.75- (Downstream of Villages Development at NRV Mall) Bio 'IM' Two 2006 Virginia Stream Condition Index (VSCI) surveys with an average score of 23.1. This station was sampled at the request of the WCRO VWP program with the goal of collecting water quality data prior to new development immediately upstream near the New River Valley Mall complex. A crayfish/macro invertebrate kill in January 2006 impacted the stream with the source occurring somewhere above this station. The most noticeable difference between this site and the reference station is the low abundance of organisms collected in the spring sample compared to the reference site. The abundance increased in the fall and is comparable to the reference site (Falling Branch).

9-XEJ000.10- (North of NRV Mall) Bio 'IM' Two 2006 VSCI surveys with an average score of 23.8. This station was sampled at the request of the WCRO VWP program with the goal of collecting water quality data prior to new development immediately upstream and north of the New River Valley Mall and above the Huckleberry Tail crossing. The main source of impact appears to be recent development and urban land use resulting in altered hydrology, excessive storm water runoff, sediment deposition, bank erosion, and riparian vegetation removal.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
Benthic-Macroinvertebrate Bioassessments / 5A
Total impaired size by water type:
2.64

Unnamed Tributaries XEJ and XEH to Slate Branch

Size within: Montgomery Co.

Aquatic Life


Sources:

  • Loss of Riparian Habitat
  • Municipal (Urbanized High Density Area)
  • Sediment Resuspension (Clean Sediment)
  • Streambank Modifications/destabilization
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.

2012 Impaired Waters

Category 4 & 5 by Location*

New River Basin

Fact sheet prepared for Montgomery Co.

Cause Group Code: N29R-01-PCB - New River, Claytor Lake, Peak Creek, Reed Creek and Stony Creek

Location: The impairment begins at the I-77 bridge crossing the New River and extends downstream to the VA/WV State Line and includes the tributaries Peak Creek and Reed Creek and Stony Creek as described below.
City/County Giles Co., Montgomery Co., Pulaski Co., Radford City, Wythe Co.
Use(s): Fish Consumption
Cause(s) /
VA Category:
PCB in Fish Tissue / 5A
The Virginia Department of Health (VDH) issued a fish consumption advisory on August 6, 2001 for polychlorinated biphenyls (PCBs) for the lower portion of the New River (Rt. 114 Bridge downstream to the VA / WV State Line - 52.0 miles) based on fish tissue collections from Carp. An Advisory extension to Claytor dam was issued 8/06/2003 (11.47 miles) recommends that no carp be consumed in these waters and no more than two meals per month of flathead and channel catfish. The VDH PCB Fish Consumption Advisory was further extended upstream on the New River (13 miles) to the I-77 Bridge to include the lower portions of Peak Creek (4.02 miles), Reed Creek (16.35 miles) and Claytor Lake (4,287 acres) on 12/02/2004. The VDH advises consumption should not exceed two meals per month for carp and smallmouth bass. The VDH level of concern is 50 parts per billion (ppb) in fish tissue.

There are eight fish tissue collection sites within the 2010 data window reporting exceedances of the WQS based 20 ppb fish tissue value (TV) (VDH 50 ppb). These data are reviewed by the VDH in making an advisory determination. A complete listing of collection sites and associated fish tissue data are available at http://www.deq.virginia.gov/fishtissue/fishtissue.html. A more detailed presentation of the data can also be found using an interactive mapping application at http://www.deq.virginia.gov/. The VDH Advisory information is also available via the web at http://www.vdh.virginia.gov/Epidemiology/PublicHealthToxicology/Advisories/.

9-SNC000.20- 2004 fish tissue finds with application of the new WQS TV for PCB (20 ppb) the addition of 3 species exceeding the new TV criterion. Rock Bass (size 16-20 cm) at 25.21, SM Bass (size 28.6-30.5 cm) at 22.13 and White sucker (1 fish) at 30.08 ppb. Stony Creek is therefore a 2010 addition based on the new WQS PCB tissue value of 20 ppb.

Station 9-RDC009.00 exceeded the DEQ screening value for PCBs in a carp sample.

Estuary
(sq. miles)
Reservoir
(acres)
River
(miles)
PCB in Fish Tissue / 5A
Total impaired size by water type:
18.83

New River, Claytor Lake, Peak Creek, Reed Creek and Stony Creek

Size within: Montgomery Co.

Fish Consumption


Sources:

  • Source Unknown
* Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the impairment.
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