Profile of toxic chemical releases in the Chesapeake Bay LAE, based on 2012 TRI National Analysis data.
Chesapeake Bay TMDL Tracking and Accounting System (BayTAS) Layers.
Measured and calculated physical and nutrient parameters (1984 – present).
Physical and Nutrient Parameters (1942-1982).
Water quality monitoring data collected at seventy tributary stations. Samples at all tributary stations are collected monthly.
Non-tidal Monitoring Network Layer.
Watershed Model cover the 1984 to 2005 time frame and are updated annually as data become available. Data are largely supplied by the seven watershed jurisdictions but are also obtained from NPDES permit databases, including EPA
Data related to municipal and industrial facilities in the Bay Watershed Model point source database maintained by the CBP and include information for the 478 significant industrial, municipal, and federal facilities discharging directly to the surface waters in the watershed. Data are updated annually as data become available. Data are largely supplied by the seven […]
An application of the Hydrologic Simulation Program-Fortran (HSPF). The segmentation scheme divides the Chesapeake Bay watershed into approximately 1,000 segments/subbasins, with the average size about 64 square miles. About 280 monitoring stations throughout the Chesapeake Bay watershed were used for calibration of hydrology, while approximately 200 monitoring stations were used to calibrate water quality, depending […]
Combined sewer systems (CSS) are sewers that are designed to collect rainwater runoff, domestic sewage, and industrial wastewater in the same pipe. Overflows from CSS are Combined Sewer Overflows (CSOs), which contain stormwater and untreated human and industrial waste, toxic materials, and debris. CSOs are considered point sources and are assigned WLAs in this TMDL. […]