Showing 1 - 8 of 8 publications

2017 Technical Addendum Ambient Water Quality Criteria for Dissolved Oxygen, Water Clarity and Chlorophyll a for the Chesapeake Bay and Its Tidal Tributaries

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This 2017 addendum provides previously undocumented features of the procedures for assessing attainment of the Chesapeake Bay water quality criteria as well as refinements and clarifications to the previously published Chesapeake Bay water quality criteria assessment procedures.

View document [PDF, 4.2 MB] 2017 Technical Addendum Ambient Water Quality Criteria for Dissolved Oxygen, Water Clarity and Chlorophyll a for the Chesapeake Bay and Its Tidal Tributaries

Review of Phase 5 Watershed Model Hydrologic Calibration

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The hydrologic calibration of the phase 5 watershed model was evaluated through 9 published acceptable criteria used in HSPF Expert system. The specific flow characteristics evaluated are: Error in total volume; Error in low flow or base flow recession; Error in 50% lowest flow; Error in 10% highest flow; Error in storm volumes; Summer volume error; Winter volume error; Summer storm volume error; and Storm peaks simulated verses observed for selected storms in inches. One Phase 5 base flow statistic was also used.

View document [PDF] Review of Phase 5 Watershed Model Hydrologic Calibration