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A stormwater detention vault is an underground structure designed to manage excess stormwater runoff on a developed site, often in an urban setting. This type of best management practice may be selected when there is insufficient space on the site to infiltrate the runoff or build a surface facility such as a detention basin or retention basin .
Also provides a detailed stormwater calculator for development. Center for Watershed Protection – Provides practical guidance for runoff reduction; Low Impact Development Center – A water quality research organization; many links to green infrastructure, LID practices, projects and stormwater resources
A detention basin or retarding basin is an excavated area installed on, or adjacent to, tributaries of rivers, streams, lakes or bays to protect against flooding and, in some cases, downstream erosion by storing water for a limited period of time.
Percolation Trench. A percolation trench, also called an infiltration trench, is a type of best management practice (BMP) that is used to manage stormwater runoff, prevent flooding and downstream erosion, and improve water quality in an adjacent river, stream, lake or bay.
The New Jersey stormwater management rules were organized in 1983 and updated in 2004. The rules restrict building within 300-foot of "high quality water"; and stormwater and parking lot runoff at new developments must be diverted to a retention basin or a detention basin that are used for groundwater recharge to replenish the aquifer. [1]
The runoff curve number is based on the area's hydrologic soil group, land use, treatment and hydrologic condition.References, such as from USDA [1] indicate the runoff curve numbers for characteristic land cover descriptions and a hydrologic soil group.
Other external programs that aid in the generation of data for the EPA SWMM 5 model include: SUSTAIN, [22] BASINS, [23] SSOAP, [24] and the EPA’s National Stormwater Calculator (SWC) [17] which is a desktop application that estimates the annual amount of rainwater and frequency of runoff from a specific site anywhere in the United States ...
Storm water is typically channeled to a retention basin through a system of street and/or parking lot storm drains, and a network of drain channels or underground pipes.. The basins are designed to allow relatively large flows of water to enter, but discharges to receiving waters are limited by outlet structures that function only during very large storm eve