Management Practices - practices that are used to reduce pollutants
typically present in stormwater runoff, prior to the runoff entering
streams and rivers.
Department of Natural resources and Environmental Control
period following at least 72-hours after the most recent precipitation
event measuring at least 0.10 inches or more.
that remove particulates and associated pollutants such as heavy metals
and phosphorous. (see BMPs)
that control the flow of runoff including detention/retention ponds,
constructed wetlands, dams and check dams and rain barrels. (see BMPs)
is the water beneath the surface that can be collected with wells,
tunnels, or drainage galleries, or that flows naturally to the earth's
surface via seeps or springs. Groundwater is the water that is pumped
by wells and flows out through springs.
structures that concentrate and remove sediment, litter and other
floatable solids, and oil. (see BMPs)
that allow stormwater to return to the ground, rather than simply
run off impervious surfaces. (see BMPs)
the water enters the storm sewer/drainage system.
Separate Storm Sewer System
Pollutant Discharge Elimination System (NPDES)
permit program that controls water pollution by regulating point sources
that discharge pollutants into waters of the United States.
the stormwater exits the storm sewer/drainage system.
outfalls from conveyances such as pipes or man-made ditches
recharge area is an area that allows water to enter the aquifer. The
area is particularly vulnerable to any pollutants that could be in
the water. If pavement is constructed over this area, less water can
enter the aquifer. This could mean a water shortage to those people
using the groundwater from the aquifer.
buffers are transition areas between water and land. They link terrestrial
upland ecosystems to stream, river, lake, or wetland ecosystems. Buffers
can be strips of grassy land leading to the water's edge or thickly
forested streamside areas. Their functions include: protecting and
improving water quality, improving wildlife habitat and biodiversity,
and protecting against erosion and preserving stream characteristics,
and providing recreational and aesthetic value.
that hits the ground and starts to flow over land.
or other surficial materials transported and/or deposited by the action
of wind, water, ice or gravity as a product of erosion.
route of drainage for precipitation (rain or snow)
body of water including ponds, lakes, stream, rivers, etc.
lowland area, such as a marsh or swamp, that is saturated with moisture,
especially when regarded as the natural habitat of wildlife
collection of stormwater samples following a dry weather condition,
commencing within 20 minutes of the start of precipitation and continuing
with continued precipitation for 3.0 hours.