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The City of Portsmouth’s Olde Towne Historic District experiences localized flooding throughout the drainage area due to aging infrastructure and changing environmental conditions. In the lowest portion of the drainage area, rainfall events as small as 0.1-inches of rain in 24 hours in conjunction with high tides can flood streets with 1 foot of water […]
Numerous programs exist for farms to integrate conservation into their existing production framework to increase water quality and soil conservation while providing technical support and financial incentives for farmers to succeed. Yet despite these incentives, farmers often do not adopt these conservation practices for a variety of social, cultural, informational, and financial reasons. Thus, finding creative and informed ways of increasing adoption […]
The Best Management Practice (BMP) Warehouse is an application used by DEQ to maintain a centralized database for municipal separate storm sewer (MS4) permittees to upload their non-point source BMP data for state and federal reporting purposes. With the likelihood that the requirement to upload comprehensive BMP data into the Warehouse will be included in […]
In Virginia alone, there are 2,900 dams ranging from farm ponds to large reservoirs providing hydroelectric power and water supply. Approximately 360 of these dams are classified as potentially high hazard where failure would result in probable loss of life or serous economic damage. For dams where potential failure modes have been identified to have […]
Phytoplankton are primary producers which are critical for reservoir ecosystem function. However, certain phytoplankton, particularly cyanobacteria, can form noxious blooms in freshwater ecosystems. Epilimnetic mixing is a management strategy intended to disrupt surface scums of harmful cyanobacteria while promoting less-harmful phytoplankton taxa, such as diatoms. Many studies have examined the degree to which epilimnetic mixing […]
A storm system in the city of Suffolk, VA requires a structure replacement and pipe rehabilitation. Sounds like a typical day in the life of a stormwater engineer, right? However, there are a few extenuating circumstances that make this project unique. The upstream end of the storm pipe in need of rehabilitation can be […]
The role of the eight coastal planning district and regional commissions (PDCs/RCs) in regional environmental services has been growing with increased support from federal programs to provide technical assistance to member localities. The Virginia Department of Environmental Quality, administering federal funds for coastal zone management and water quality improvement programs, asks PDCs to prepare scopes […]
Climate change is affecting the way stormwater management has traditionally been perceived. Total rainfall and storm intensity are increasing to levels unseen in the past. Sea-level rise and resilience have become a popular topic within the stormwater community. Project and site constraints limit the feasibility and effectiveness of traditional stormwater management approaches. In urban and […]
Chesapeake’s Greenbrier Drainage Area experienced significant street and parcel flooding during Hurricane Matthew, when more than 11 inches of rain fell on October 8th and 9th, 2016. Some streets became impassible, and key roadway intersections experienced prolonged flooding. The floodwaters were slow to recede. In response to this and other severe storm events, engineers from […]
Multi-core computer processing has made remarkable advances over the past three years and is now practically and affordably within reach of all modelers—not just those with big budgets. However, reaping the benefits of 32-, 64-, or 128-core CPU power in 2021 is not as straightforward as purchasing a dandy computer, installing software, and having at […]
The Virginia Lakes and Watershed Association is a volunteer organization and its mission is to provide education on water resources in Virginia.
