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FOSR’s 2020 Summer E. coli Results through 07.01.2020

As everyone is gearing up for the 4th of July, these are the E. coli levels of the water sample that were collected yesterday, Tuesday, July 1.   If the conditions remain relatively the same as when these water samples were collected, these results may provide a baseline.

FOSR 2020 Summer Quantitative E. coli Concentration Results through 07.01.2020

The following are some examples that could cause elevated E. coli levels:

  • Tributaries (E.g. Manassas Run on Tuesday, July 1 E. coli levels measured 259.5 MPN CFU per 100 mL of water sample) and at the confluences where these streams flow into the river.
  • Areas were cows and other livestock are in the water or on the banks
  • Rain: localized and widespread
  • Point sources that discharge into the stream or river

 

 

FOSR’s 2020 Summer E. coli Results through 06.24.2020

These are the E. coli results for the water samples that were collected yesterday, Wednesday, June 24, 2020.

FOSR 2020 Summer Quantitative E. coli Concentration Results through 06.24.2020

At the following sites, the E. Coli levels were in exceedance of the previous Virginia Water Quality Standard for primary contact recreational use for a single sample maximum of 235 E. coli colony forming units (CFUs) per 100 ml.

  • 1553.1 MPN E. coli – Manassas Run upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County
  • 579.4 MPN E. coli – Opequon Creek at Neill Road ford

In a freshwater system, these data represent a snapshot of the water quality on the date, time, and under the conditions that the water sample was collected.

FOSR’s 2020 Summer E. coli Results through 06.22.2020

Over the weekend, I observed that the Shenandoah River in the Warren and Clarke Counties area appeared higher than “normal”, flowing swiftly, and discolored/turbid with no local significant rain other than passing showers and thunderstorms.  On Monday, June 22,  I decided to collect water samples from the South Fork of the Shenandoah River at the Front Royal public boat landing, North Fork of the Shenandoah River at the Strasburg Park public boat landing, and then from the Main-stem at various locations.  It appeared that the elevated flow was coming from the South Fork of the Shenandoah River.  The E. coli levels at Front Royal public boat landing were 248.9, which exceeded the previous instantaneous Virginia water quality standard threshold of 235 E. Coli CFUs per 100ml of sample for primary recreational contact.

These are the E. coli results for the water samples that were collected yesterday, Monday, June 22, 2020.

FOSR 2020 Summer Quantitative E. coli Concentration Results through 06.22.2020

FOSR’s 2020 Summer E. coli Results through 06.18.2020

These are the E. coli results for the water samples that were collected yesterday, Thursday, June 18, 2020.

FOSR 2020 Summer Quantitative E. coli Concentration Results through 06.18.2020

Several of the sites had elevated E. coli levels. At the following sites the E. Coli levels exceeded the previous instantaneous Virginia water quality standard threshold of 235 E. Coli CFUs per 100ml of sample for primary recreational contact:

  • 461.1 MPN E. coli – Shenandoah River at the Route 7 public boat launch in Clarke County VA
  • 1203.3 MPN E. coli – Shenandoah River at Morgan Ford low water bridge along the bank of the public boat landing in Warren County
  • 1732.9 MPN E. coli – Manassas Run upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County
  • 980.4 MPN E. coli – Manassas Run at Dismal Hollow Road and Gore Road
  • 290.9 MPN E. coli – South Fork of the Shenandoah River at Front Royal public boat landing off Luray Ave in Warren County
  • 579.4 MPN E. coli – South Fork of the Shenandoah River at relocated Salem/White House public boat landing on west side of river/river left in Page County
  • 920.8 MPN E. coli – North Fork of the Shenandoah River below Meems Bottom covered bridge in Mt. Jackson, Shenandoah County

 

In a freshwater system, these data represent a snapshot of the water quality on the date, time, and under the conditions that the water sample was collected.

Shenandoah River at the Route 50 and Route 7 public boat launches in Clarke County

These are the Friends of the Shenandoah River’s summer E. coli testing program results for the Shenandoah River at the Route 50 and Route 7 public boat launches in Clarke County Virginia on June 3, 6, and 10.

 

FOSR’s 2020 Summer E. coli Results through 06.10.2020

FOSR’s Summer E. coli Testing Project at public access and recreational use areas on the Main Stem, North Fork, and South Fork of the Shenandoah River and Opequon Creek

In cooperation with the Warren County Board of Supervisors, additional sites are being added on Manassas Run to assist in isolating areas contributing to the elevated E. coli levels the FOSR has documented in the watershed.

These are the E. coli concentration results for the water samples that were collected yesterday, Wednesday, June 10, 2020.  In a freshwater system, these data represent a snapshot of the water quality on the date, time, and under the conditions that the water sample was collected.

For years Virginia’s water quality standard for freshwater beach advisories or closures was a single sample maximum of 235 E.coli CFU/100 ml of sample.  As of last year, Virginia no longer has a single sample maximum or any criteria for primary recreational contact in freshwaters. Under the recently approved Virginia Code for both the State Water Control Board and VA Dept. of Health, there is no longer any Virginia State agency responsible to inform the public of potential exposure to elevated E. coli levels in freshwater streams and rivers in Virginia.

FOSR 2020 Summer Quantitative E. coli Concentration Results through 06.10.2020

FOSR 2020 Summer Quantitative E. coli Concentration Results Manassas Run 06.10.2020

 

Welcome Hayden!

I am glad to introduce Hayden Bauserman, a graduate of Shenandoah University Environmental Studies Program.  Hayden is doing an internship with the Friends of the Shenandoah River. He was with me in the field today learning the FOSR’s procedures for water sample collection.

Demolition of the 211 Westbound Bridge has Begun

The demolition of the 211 westbound bridge in Page County VA has begun.  The newly constructed boat ramp on the west bank of the South Fork of the Shenandoah River (river left)  is now open.  Access to the boat ramp is off of 211 eastbound, towards Luray, before crossing over the bridge.

 

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Mitigation steps by Norfolk Southern Corp to reduce sediment loading in Manassas Run

Today, Wednesday, June 10, 2020, I was invited to meet with representatives from Norfolk Southern Corporation and VA Dept. of Environmental Quality (DEQ) at Manassas Run.  Below are pictures of the steps that have been taken by Norfolk Southern Corp. to mitigate the sediment loading into Manassas Run that I previously documented.  Additional best management practices (BMPs) are going to be installed to further reduce the sediment transport into Manassas Run. 

 
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