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Fairfax County’s robust BMP inspection program has recently identified piping failures on several of their older, publicly maintained dry pond facilities. A failing dam is a high priority maintenance issue and requires expedited measures to restore safety and functionality to the facility. This presentation will cover the overall process, from piping failure identification, to project […]
Greenbrier State Park Dam, owned and operated by the Maryland Department of Natural Resources, is a 64-foot tall High Hazard earthen embankment dam located in Boonsboro, Maryland. The dam impounds a 30-acre public lake as part of the Maryland State Park system. The dam, constructed in 1965, has a history of seepage issues including incidents […]
Effects of Instantaneous and Continuous spill of Radium-226/224 and total uranium loading scenarios for Coles Hill Uranium Mine, Virginia was modeled to evaluate subsequent water quality impact to the Banister River, which feeds into the mouth of Lake Gaston that serves as the main drinking water supply source for Cities of Norfolk, Virginia Beach and […]
In December of 2010, the Virginia DCR Dam Safety Regulations were amended adding section 4VAC50-20-53 allowing High Hazard Dams to reduce their required Spillway Design Flood (SDF) storm event from the 0.9 PMP to the 0.6 PMP by adhering to multiple additional special criteria. Since 2010, Hurt & Proffitt, Inc. has assisted Virginia Dam Owners […]
The Total Maximum Daily Load (TMDL) Analysis and Modeling Task Committee of the American Society of Civil Engineers (ASCE) Environmental and Water Resources Institute (EWRI) was formed to address concerns over the current practices of analysis and modeling in TMDL development and implementation in terms of analysis technique and model selection, data requirement, calibration, validation, […]
This presentation will highlight major Program changes that are part of the ongoing NFIP “Transformation” including enhanced data reporting and analytics, updates to the NFIP “Moonshot” efforts, and, perhaps most important, the upcoming introduction of a brand new rating methodology, Risk Rating 2.0. Finally, we will touch upon outreach tools and strategies available to Floodplain […]
The Commonwealth of Virginia’s November 2010 Chesapeake Bay Watershed Implementation Plan included its regulatory plan to ensure MS4s implemented necessary pollutant reductions. This regulatory plan details the back-end dominated pollutant reduction MS4 permitting strategy that DEQ selected to employ over three five-year VPDES permit cycles, beginning in 2013. On March 12, 2020, Virginia Governor Ralph […]
The Virginia Lakes and Watershed Association is a volunteer organization and its mission is to provide education on water resources in Virginia.
