If you are not happy with the results below please do another search
Municipal pollution prevention and good housekeeping (PPGH) is one of six minimum control measures common to all municipal separate storm sewer system (MS4) permits. Development and implementation of the PPGH program, however, can be a challenge for localities, whether it is a large community with delegated responsibilities among multiple departments or a small community with […]
One of the first steps in a dam rehabilitation is calculating the amount of runoff that enters the reservoir during its specific design storm. The hydrologic analysis of a dam includes assessing upstream sources of flow such as those from a single drainage area or discharge from an upstream dam. More complex drainage areas can […]
The City of Fairfax began a public education campaign in Fall 2021 related to its proposed Stormwater Utility (SWU), a fee-for-service mechanism that would create a dedicated funding source for the City’s stormwater management capital needs. Under the proposed SWU, private property owners would be assigned one Billing Unit (BU) per 500 square feet of […]
As part of the City of Chesapeake’s Elbow Road improvement efforts, GKY and Associates, Inc. was tasked with creating an existing condition Stormwater Management Model (SWMM). The primary goal of this modeling effort was to help the City and its roadway designers better understand and accommodate drainage in the highly undeveloped, low-lying, and flat watershed. […]
A flexible approach to meet ongoing local and Bay TMDL requirements is required to stay current with changing guidance and regulations, climate, and citizen needs. The recent modifications by DEQ to the calculation of street sweeping credits for meeting TMDL pollutant reduction goals have significantly reduced the pollutant removal credit for this compliance strategy, effective […]
This presentation will highlight the recent successful implementation of green infrastructure projects in two neighborhoods that started with Walkable Watershed plans: one in the City of Richmond and one in the City of Petersburg. Each project showcases the commitment of project partners investing in long-term solutions that uniquely suit the needs of the surrounding neighborhood. […]
A stormwater “Resilience Plan” identifies specific drainage improvement projects that could be constructed to improve flood resiliency – specifically for extreme storm events. Resiliency planning addresses how fast and efficiently a system recovers after a major event. Here, resiliency specifically refers to the ability of streets and land parcels to recover from flooding. Improving resiliency […]
The Brandywine Creek, which flows through a densely populated region of eastern Pennsylvania, flooded repeatedly in 2021, culminating in a record-setting flood resulting from the remnants of Hurricane Ida. The Brandywine Creek flood is one of many examples of unprecedented flooding that occurred in the Mid-Atlantic region in 2021, which suggests that any lessons learned […]
Loudoun County’s Illicit Discharge Detection and Elimination (IDDE) program dates back almost 20 years. The County is one of the fastest growing communities in the Country, and its stormwater network of 3,000 outfalls is continually increasing. As the outfall inventory grows and land uses change, it is imperative that the County adjust its procedures to […]
Many of Virginia’s regulated MS4s face ongoing challenges with compliance targets, including the upcoming 2023 and 2028 Chesapeake Bay TMDL implementation schedule. Along with other MS4-based programming, communities are also seeing additional challenges emerge for drainage improvements and other infrastructure-based needs that transcend regulatory compliance and get more to community service delivery expectations. As rainfall […]
The Virginia Lakes and Watershed Association is a volunteer organization and its mission is to provide education on water resources in Virginia.
