WSDOT - Stormwater Drywell - BMPs

This is a view of the drainageinlet featureclass created with the following query: WHERE DrainageInletCategory = 6 AND LifeCycleCurrentStatus= 'Active' AND (WSDOTownership in ('Yes', 'Unknown') OR WSDOTownership IS NULL) This feature class contains WSDOT’s stormwater drainage inlets. A drainage inlet is a chamber or well allowing for the entry of surface runoff to a closed stormwater conveyance system. Inlet type is chosen based upon its hydraulic and interception capacity as well as depth of flow, grade, super-elevation, and placement.The majority of the data collected so far are within the Phase I and Phase II 2009 NPDES Municipal Stormwater Permit Areas.This feature class has eight subtypes: Catch Basin, Concrete Inlet, Drop Inlet, Dry Well, Grate Inlet, Manhole, Other, amd Unknown.