WSDOT - Stormwater Discharge Point - Field

This is a view of the DischargePoint featureclass created with the following query: LifeCycleCurrentStatus= 'Active' AND (WSDOTownership in ('Yes', 'Unknown') OR WSDOTownership IS NULL) AND SWLocationVerified = 'Yes' This feature class contains WSDOT’s stormwater discharge points. A stormwater discharge point is the point at which WSDOT loses, or obtains, jurisdictional responsibility of concentrated stormwater from a constructed stormwater conveyance feature. This includes locations where stormwater infiltrates into the ground at the end of a constructed stormwater conveyance, or enters surface waters of the state through a constructed stormwater conveyance. The majority of the data collected so far are within the Phase I and Phase II 2009 NPDES Municipal Stormwater Permit Areas. Additional data were collected during stormwater retrofit review and mapping in Total Maximum Daily Load areas that are outside of the permit area. This feature class has five subtypes: Incoming, Land Surface, Managed System, Subsurface, and Surface Water.

本数据集为依据以下查询条件创建的排放点要素类视图：LifeCycleCurrentStatus='Active' 且（WSDOT所有权属于('Yes', 'Unknown') 或 WSDOT所有权为空）且 SWLocationVerified='Yes'。该要素类收录华盛顿州运输部（Washington State Department of Transportation, WSDOT）的雨水排放点。雨水排放点指WSDOT丧失或取得人工雨水输送设施所产生的集中雨水管辖权的点位，涵盖人工雨水输送末端入渗地下的点位，以及通过人工雨水输送设施排入州内地表水的点位。截至当前收集的多数数据均处于2009年国家污染物排放消除系统（National Pollutant Discharge Elimination System, NPDES）市政雨水许可区域的第一阶段（Phase I）与第二阶段（Phase II）范围内。在许可区域外的总最大日负荷（Total Maximum Daily Load, TMDL）区域内，工作人员亦通过雨水改造审查与制图工作补充采集了部分数据。该要素类共包含5个子类型：入流型、地表型、管理系统型、地下型以及地表水型。