Description: Stormwater inlets, typically found along the side or roads or in drainage swales, allowing surface water to enter the storm sewer network.
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Description: Culvert locations; pipes with two open ends used to enclose flowing surface water, typically used to allow water to pass underneath a road, driveway, railway, or embankment.
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Description: Stormwater detention or retention polygon features (ponds, channels, etc.) in Sioux Falls, SD. These include both City-owned and private drainage areas.
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Description: Sensors that monitor water table fluctuations and the hydraulic connectivity between surface water and groundwater. These sensors are used to inform flood risk assessment and mitigation strategies.
Description: Location of levee stations in the flood protection system in Sioux Falls, SD. These points are used as survey measurement along the levee, as referenced in the levee Operations and Maintenance (O & M) manual. Each station is 100 feet apart; this feature class includes every 5th station (i.e. 500 feet apart).
Description: Stormwater mains that flow via gravity through the levees and into the Big Sioux River or Skunk Creek in Sioux Falls, SD. These drains prevent flooding or water buildup behind the levees.
Description: Cross sections of levee-protected areas in Sioux Falls, SD, referencing station locations described in the levee Operations and Maintenance (O & M) manual.
Description: Impervious surfaces are mainly artificial structures—such as pavements that are covered by impenetrable materials such as asphalt, concrete, brick, stone—and rooftops. Soils compacted by urban development are also highly impervious. This feature class was derived by a consultant in April 2017.Fields with Domains:SURFACE TYPE- Impervious Surface TypeSURFACE USE- Impervious Surface Use