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City of Newport News
Back River and Warwick River Bacteria TMDL Action Plan
2024-2029 Permit Cycle
Table 1. Back River WLAs
Wasteload
Pollutant allocation City-Wide
Name of Final TMDL
TMDL Watershed Causing assigned to City Required
Report
Impairment in colony- Reduction
forming units
(CFU)
Total Maximum Daily
Loads of Bacteria for 3.78E+13
Back River in York Newmarket Creek CFU/year*
County and Cities of E. coli 17.5%
Hampton, Poquoson, (Lower Riverine) (2.31E+11
and Newport News, CFU/day*)
Virginia
2.3 Warwick River (including Skiffes Creek and Deep Creek) Impairments
VDH and DEQ monitored the Warwick River and two other “tributaries” that actually share its
watershed – Skiffes Creek and Deep Creek – from 1984 to 2006, with findings published in “Fecal
Bacteria Total Maximum Daily Load Development for Warwick River: Primary Contact
Recreational Use and Shellfish Harvesting Use” (approved April 28, 2009). Land‑use analysis
identified cropland, forested, residential, and commercial areas as indirect sources, while
humans, livestock, and wildlife represented direct bacterial inputs.
Within Newport News, the Warwick River watershed (excluding Skiffes Creek and Deep Creek) is
divided into three impaired segments: Upper Tidal (fecal coliform), Middle Tidal (fecal coliform),
and Lower Tidal (enterococci). Approximately 75 percent of this watershed lies within the City,
with the remainder located in York County. Skiffes Creek is impaired for fecal coliform, with
approximately 24 percent of its watershed area in Newport News (the remainder lies within
James City County). Deep Creek’s lower segment is impaired for enterococci; its entire watershed
falls within the limits of the City of Newport News.Jump to an indexed page (17 of 17)