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Over the last five years, the City of Virginia Beach has completed the development of the hydrologic and hydraulic models for all 15 drainage basins throughout the City’s nearly 500 square miles. Each of the 15 drainage basins model has been calibrated and validated against data observed during historical storm events that caused flooding in […]
The High Definition Stream Survey (HDSS) approach to waterway assessments was created to rapidly gather continuous geo-referenced data in a single pass for any size of stream or river. HDSS integrates GPS, video, depth, side scan imagery, velocity, and water quality information to enable a much more thorough understanding of the current and potential factors […]
As the City of Fairfax (the City) progresses through the 3rd Phase of the Chesapeake Bay TMDL, there is an increased need for project implementation to meet its Pollutant of Concern (POC) reduction requirements. The headwaters of Accotink Creek and its combined major tributaries are located within the City and offer significant TMDL project opportunities. […]
This presentation takes the audience on a captivating voyage through time to experience the evolution of stormwater best management practices (BMPs) in Virginia. Beginning with the creation of Virginia’s first known water management practices, it details the events leading to the development and expansion of pivotal regulations and the Virginia Stormwater Management Program (VSMP). […]
The Clean Air Act Amendment in 1990 has been successful in limiting sulfate atmospheric deposition, but sulfate stream concentrations remain high, particularly in unglaciated regions. There are several anthropogenic sources of stream sulfate, including building materials, road salt, septic systems, and agriculture. Beyond acidification, sulfate fluxes have ecological consequences for nutrient cycling through mobilizing phosphate. […]
Virginia NRCS has rehabilitated 13 of its 150 watershed structures since the Rehabilitation Act of 2000. An additional three structures have completed Environmental Assessments. Rehab needs included state regulatory actions, such as requiring an increase in structure capacity brought on by a change in hazard classification, vegetated ASW integrity, material filter incompatibility, and riser stability […]
Saddle River is a 16.3 miles long major tributary of the Passaic River in New Jersey. The watershed consists of approximately 60 square miles of developed urban area with extensive residential land use, and two wastewater treatment plants (WWTPs) discharging into Hohokus Brook, a large tributary. New Jersey DEP (Department of Environmental Protection) and USGS […]
This course provides insight into the importance of proper foundation flood vents and dry floodproofing techniques for buildings located in a flood zone. It will identify FEMA Technical Bulletins 1, 2, and 3, the National Flood Insurance Program, ASCE 24, ICC, and Building Code regulations and standards as they relate to sustaining foundations and overall […]
The Oregon Avenue Watershed Green Streets (OAWGS) project was part of the District Department of Transportation’s (DDOT’s) efforts to address requirements for stormwater retention in accordance with its MS4 permit issued by the Environmental Protection Agency (EPA). DDOT and its consultant team developed the OAWGS project to reduce runoff from streets within the 360-acre Oregon […]
Many factors are currently driving the need for water and wastewater utilities to take a more holistic view of the systems they operate and the water resources system in which they are embedded. Some of these factors include growth and redensification, regulatory uncertainty, climate uncertainty and vulnerability to hazards, growing social equity demands and environmental […]
The Virginia Lakes and Watershed Association is a volunteer organization and its mission is to provide education on water resources in Virginia.
