These are the E. coli results for the water samples that were collected on, Tuesday, August 15, 2023. None of the sites tested exceeded the criteria utilized by FOSR of 235 CFU/100 ml. Prior to October 2019, 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. Virginia no longer has a single, instantaneous, sample maximum or any criteria for primary recreational contact in freshwaters.
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FOSR’s Summer E. coli Test Results for Tuesday, August 15, 2023
FOSR’s Summer E. coli Test Results for Tuesday, August 08, 2023
August 08, 2023, FSDR North Fork Shenandoah River at Deer Rapids public boat launch, Shenandoah County VA.
These are the E. coli results for the water samples that were collected on, Tuesday, August 8, after the rain that came through in some areas on Monday. Two out of 13 of the sites tested exceeded the criteria utilized by FOSR of 235 CFU/100 ml. Prior to October 2019, 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. Virginia no longer has a single, instantaneous, sample maximum or any criteria for primary recreational contact in freshwaters.
FOSR’s Summer E. coli Test Results for Wednesday, July 26, 2023
These are the E. coli results for the water samples that were collected yesterday, July 26, for FOSR’s Summer E. coli testing program at sites located on the NF, SF, and Main-stem of the Shenandoah River. 1 out of 13 of the sites tested exceeded the criteria utilized by FOSR of 235 CFU/100 ml. Prior to October 2019, 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. Virginia no longer has a single, instantaneous, sample maximum or any criteria for primary recreational contact in freshwaters.FOSR’s Summer E. coli Test Results for Tuesday, July 18, 2023
These are the E. coli results for the water samples that were collected yesterday, Tuesday, July 18, 2023. The sites located on the Main-stem, North Fork, and South Fork of the Shenandoah River had relatively low levels of E. coli, while the E. Coli levels in Manassas Run however remain elevated.
- FW 36 – 435.2 MPN E. coli Manassas Run, upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County, VA
As a benchmark, the FOSR uses the single sample concentration threshold of 235 E. coli colony-forming units per 100 mL of water sample for primary recreational use that was included in the Virginia water-quality standard prior to October 2019. Meaning that if a single freshwater grab sample had E. coli concentration/levels that exceed 235 CFU per 100mL of water sample then the water was considered unsafe for primary recreational use. 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 Summer E. coli Test Results for Tuesday, July 11, 2023
These are the E. coli results for the water samples that were collected yesterday, Tuesday, July 11, 2023. The sites located on the Main-stem, North Fork, and South Fork of the Shenandoah River had relatively low levels of E. coli, while the E. Coli levels in Manassas Run however remain elevated.
- FW 36 – 248.1 MPN E. coli Manassas Run, upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County, VA
As a benchmark, the FOSR uses the single sample concentration threshold of 235 E. coli colony-forming units per 100 mL of water sample for primary recreational use that was included in the Virginia water-quality standard prior to October 2019. Meaning that if a single freshwater grab sample had E. coli concentration/levels that exceed 235 CFU per 100mL of water sample then the water was considered unsafe for primary recreational use. These data represent a snapshot of the water quality on the date, time, and under the conditions that the water sample was collected.
Much of Shenandoah River Watershed Still Under Drought Watch Advisory
Map image from National Drought Mitigation Center – “The U.S. Drought Monitor is produced through a partnership between the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture and the National Oceanic and Atmospheric Administration.”
July, 7, 2023: While VA Dept of Environmental Quality has removed some areas in Virginia from the Drought Watch Advisory issued on June 9, 2023, an advisory remains in effect for the Eastern Shore and Shenandoah drought evaluation regions, which include Northampton, Accomack, Augusta, Rockingham, Shenandoah, Frederick, Page, Warren, and Clarke counties.
FOSR’s Summer E. coli Test Results for Wednesday, June 21, 2023
These are the E. coli results for the water samples collected yesterday for the FOSR’s Summer E. coli Testing Program at Recreational Sites on the NF, SF, and Main-stem of the Shenandoah River. Although it rained most of the day while we were out collecting the water samples it was welcomed. 
FOSR’s Summer E. coli Test Results for Wednesday, June 14, 2023: Water levels remain low
These are the E. coli results for the water samples that were collected yesterday, Wednesday, June 14, 2023. The sites located on the Main-stem, North Fork, and South Fork of the Shenandoah River had relatively low levels of E. coli, while the E. Coli levels in Manassas Run however remained elevated.
https://fosr.org/state-of-the-river/water-quality-reports/
- FW 36 – 248.1 MPN E. coli Manassas Run, upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County, VA
As a benchmark, the FOSR uses the single sample concentration threshold of 235 E. coli colony-forming units per 100 mL of water sample for primary recreational use that was included in the Virginia water-quality standard prior to October 2019. Meaning that if a single freshwater grab sample had E. coli concentration/levels that exceed 235 CFU per 100mL of water sample then the water was considered unsafe for primary recreational use. 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 Summer E. coli Test Results for Wednesday, June 7, 2023
These are the E. coli results for the water samples that were collected yesterday, Wednesday, June 07, 2023. The sites located on the Main-stem, North Fork, and South Fork of the Shenandoah River had relatively low E. coli concentrations/levels. The E. Coli concentrations/levels in Manassas Run however were elevated. https://fosr.org/state-of-the-river/water-quality-reports/
- FW 36 – 325.5 MPN E. coli Manassas Run, upstream of the confluence with the Shenandoah River at Morgan Ford low water bridge in Warren County, VA
As a reference point, the FOSR uses the single sample concentration threshold of 235 E. coli colony-forming units per 100 mL of water sample for primary recreational use that was included in the Virginia water-quality standard prior to October 2019. Meaning that if a single freshwater grab sample had E. coli concentration/levels that exceed 235 CFU per 100mL of water sample then the water was considered unsafe for primary recreational use. These data represent a snapshot of the water quality on the date, time, and under the conditions that the water sample was collected.