Intervention_Category: Direct Management; Intervention_Subcategory: urban stormwater; Ag1_NonAg2_Both3: 2; Rulemaking_Agenc_.Level: State, County, Municipal; Implementing_Agency_Level: County, Municipal; Promulgating_Policies: WI Stat Ch 281 Water and Sewage, WI NR 151 Runoff Management; WI Stat 283, WI NR 216 Storm Water Discharge Permits; County Stormwater BMP guidance; Short_Intervention_Description: County and municipal public and private stormwater retention and detention basins, in compliance with stormwater discharge permit. Information from County and Municipal engineering departments.; Intervention_area_ha: 2384.17; Data_Sources: Emails sent June - August, 2013 to municipal engineers; responses received from 14 of 23 municipalities. Data format received was either shapefiles or parcel numbers - we digitized data for the latter.; Mapping_Rationale: Parcels on which BMPs are located, including public and private, detention and retention basins.