Difference between revisions of "Calculating credits for stormwater ponds"
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==Overview== | ==Overview== | ||
| − | [[File:Constructed pond 1 for credit page.jpg | + | [[File:Constructed pond 1 for credit page.jpg|thumb|300px|alt=schematic of constructed pond/wetland|<font size=3>Schematic showing characteristics of a constructed pond or constructed wetland.</font size>]] |
[[Stormwater ponds]] and [[Stormwater wetlands]] are the most common types of constructed basins with a permanent pool of water that are built for the purpose of capturing and storing stormwater runoff. These basins are constructed, either temporarily or in a permanent installation, to prevent or mitigate downstream water quantity and/or quality impacts. Several types of constructed basins and wetlands (stormwater basins, constructed stormwater ponds, wet ponds, forebays, wet sedimentation basins, wet detention ponds, constructed wetlands, stormwater wetlands, etc) are included in this general category. Generally Stormwater Ponds do not have a significant area of vegetation. Stormwater Wetlands do have significant vegetation that enhances the nutrient removal of the basin. Not included in this BMP category are dry basins without a permanent pool. Also not included are oil/water separators, swirl concentrators, and other manufactured devices with a permanent pool of water in the device. | [[Stormwater ponds]] and [[Stormwater wetlands]] are the most common types of constructed basins with a permanent pool of water that are built for the purpose of capturing and storing stormwater runoff. These basins are constructed, either temporarily or in a permanent installation, to prevent or mitigate downstream water quantity and/or quality impacts. Several types of constructed basins and wetlands (stormwater basins, constructed stormwater ponds, wet ponds, forebays, wet sedimentation basins, wet detention ponds, constructed wetlands, stormwater wetlands, etc) are included in this general category. Generally Stormwater Ponds do not have a significant area of vegetation. Stormwater Wetlands do have significant vegetation that enhances the nutrient removal of the basin. Not included in this BMP category are dry basins without a permanent pool. Also not included are oil/water separators, swirl concentrators, and other manufactured devices with a permanent pool of water in the device. | ||
Revision as of 21:09, 18 February 2015
This site is under construction. Anticipated completion date is March, 2015.
Credit refers to the quantity of stormwater or pollutant reduction achieved either by an individual BMP or cumulatively with multiple BMPs. Stormwater credits are a tool for local stormwater authorities who are interested in
- providing incentives to site developers to encourage the preservation of natural areas and the reduction of the volume of stormwater runoff being conveyed to a best management practice (BMP);
- complying with permit requirements, including antidegradation (see [1]; [2]);
- meeting the MIDS performance goal; or
- meeting or complying with water quality objectives, including Total Maximum Daily Load (TMDL) Wasteload Allocations (WLAs).
This page provides a discussion of how constructed basins can achieve stormwater credits.
Overview
Stormwater ponds and Stormwater wetlands are the most common types of constructed basins with a permanent pool of water that are built for the purpose of capturing and storing stormwater runoff. These basins are constructed, either temporarily or in a permanent installation, to prevent or mitigate downstream water quantity and/or quality impacts. Several types of constructed basins and wetlands (stormwater basins, constructed stormwater ponds, wet ponds, forebays, wet sedimentation basins, wet detention ponds, constructed wetlands, stormwater wetlands, etc) are included in this general category. Generally Stormwater Ponds do not have a significant area of vegetation. Stormwater Wetlands do have significant vegetation that enhances the nutrient removal of the basin. Not included in this BMP category are dry basins without a permanent pool. Also not included are oil/water separators, swirl concentrators, and other manufactured devices with a permanent pool of water in the device.