{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "The Western Washington Stormwater Management Manual allows local governments to adopt a flow control standard that requires land development projects to match high flow durations that are produced by the existing land cover condition. As pre-requisite to allowing that standard, the manual recommends that the drainage area of the immediate stream and all subsequent downstream basins must have had at least 40% total impervious area since 1985. To help implement this option, the Department of Ecology has produced a map that displays the basins in western Washington within which development projects qualify for this lower flow control standard.", "description": "
The shapefile displays those basins within which development projects qualify for using the existing land cover condition as the stormwater flow control default target. This is a lower flow control default target than the target used for most of western Washington, which is based upon use of the historic land cover condition.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>",
"summary": "The Western Washington Stormwater Management Manual allows local governments to adopt a flow control standard that requires land development projects to match high flow durations that are produced by the existing land cover condition. As pre-requisite to allowing that standard, the manual recommends that the drainage area of the immediate stream and all subsequent downstream basins must have had at least 40% total impervious area since 1985. To help implement this option, the Department of Ecology has produced a map that displays the basins in western Washington within which development projects qualify for this lower flow control standard.",
"title": "Western Washington Land Cover Change Analysis Project - Basins 1986",
"tags": [
"Washington State Department of Ecology",
"ECY",
"Water Quality Program",
"IBM",
"imageryBaseMapsEarthCover",
"control",
"basin",
"Washington",
"stormwater",
"northwest",
"landcover",
"flow"
],
"type": "",
"typeKeywords": [],
"thumbnail": "",
"url": "",
"minScale": 150000000,
"maxScale": 5000,
"spatialReference": "",
"accessInformation": "Sanborn Mapping Solutions",
"licenseInfo": " No use constraints exist at this time.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>",
"portalUrl": ""
}