Stormwater News

Field Performance of Bioretention in Maryland
Aerial of bioretention site on University of Maryland campus

The reduction of hydrologic volume and flow peaks and delay in peak timing via bioretention were quantified in two bioretention facilities on the University of Maryland campus.
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Mosquitoes and Bioswales
Mosquito Larva

Delaware study finds that 60 percent of bioretention sites had a significant amount of mosquito breeding for most of the summer season.
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Permeable Pavement Design Specification
Construction of a pervious brick section of a road.

The promise of permeable pavement has always been powerful, however, seldom realized.
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The Smack Down on Soil Compaction
Disturbed soil after construction, illustrated by King Co. DNRP

Mass grading and construction equipment will compact urban soils, but quantifying soil infiltration rate is not as well documented.
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Stormwater Guidance for Coastal Plains
Inlets of Chesapeake Bay along the Coastal Plain of eastern Maryland

From a stormwater perspective, terrain matters a lot more than state boundaries. However, the bulk of stormwater research has taken place in only one terrain.
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Non-Green Rooftops
Pine Roofing Shingles

Roof runoff quality is fundamentally determined by the nature of the roof surface, which can be quire diverse.
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The Grass Crop of the Chesapeake Bay Watershed
Turf grass covers a large portion of the Chesapeake Bay watershed

It may surprise you, but lawns and turf grass is now the largest crop grown in the Chesapeake Bay watershed.
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Technical Support for the Baywide Runoff Reduction Method
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Bay stormwater managers are rapidly shifting their focus to reduce the volume of runoff rather than merely treating its quality.
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Winter, Road Salt and the Chesapeake Bay
Road Salt

Chloride is one of the main components of road salt and there is virtually no way to remove it once it gets into the watershed.
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