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Water Data
Drinking water, rivers, groundwater, floods and water use. 69,684 datasets from federal, state and local publishers.
Datasets
69,684
Federal
10,000+
State
3,063
County and city
2,105
Most viewed water datasets
- Drainage BasinsCity of RaleighThe geographic area covered by this dataset includes the entire stormwater drainage system within Raleigh's Extraterritorial Jurisdiction (ETJ). The Drainage Basins dataset includes polygons representing the boundaries for specific drainage basins as defiCSVGeoJSONShapefileKML+1Updated 10/24/2018
- USGS Blue Line StreamsCity of Raleigh · Wake CountyBlue-line stream means that a stream appears as a broken or solid blue line (or a purple line) on a USGS topographic map. Definition from NCDENR Water Resources Frequently Asked Questions http://portal.ncdenr.org/web/wq/swp/ws/401/waterresources/faqsCSVGeoJSONShapefileKML+1Updated 02/17/2026
- Water Supply WatershedsCity of Raleigh · Wake CountyWater Supply Watersheds in Wake County, NCCSVGeoJSONShapefileKML+1Updated 02/17/2026
- Flood Prone SoilsCity of Raleigh · Wake CountyFlood Prone Soils Additional FEMA information available: https://msc.fema.gov/portalCSVGeoJSONShapefileKML+1Updated 02/18/2026
- FEMA Flood Hazard AreasMetropolitan Government of Nashville and Davidson County · Nashville GISFEMA flood hazard areas for Metro Nashville and Davidson County. Source Link: https://www.fema.gov/flood-maps Metadata Document: FEMA Flood Hazard Areas Metadata.pdf Contact Data Owner: [email protected]CSVGeoJSONShapefileKML+1Updated 10/01/2026
All water datasets
10,000+ datasets
Narrow by agency
- Department of the Interior26,462
- National Oceanic and Atmospheric Administration, Department of Commerce18,573
- U.S. Census Bureau, Department of Commerce13,849
- U.S. Environmental Protection Agency2,154
- National Aeronautics and Space Administration2,013
- Lake County, Illinois1,297
- State of California1,200
- State of Washington763
- Department of Energy601
- Department of Agriculture596
- State of Virginia331
- State of Maryland261
- District of Columbia146
- State of Oregon133
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- DWR Active CallsState of ColoradoDivision of Water Resources (DWR) Active Calls. The Call is a term used by the state engineer to effectively communicate the administrative status of the natural stream. The Call communicates the priority required during a specified period of time for a water CSVJSONGeoJSONXMLUpdated 10/27/2026Weekly
- Current Surface Water Conditions in ColoradoState of Colorado · DNR - Division of Water ResourcesDivision of Water Resources (DWR) Current Surface Water Conditions. This is a list of all remote monitored stream, diversion, and reservoir gages within the state of Colorado.CSVJSONGeoJSONXMLUpdated 10/27/2026Daily
- Metro Water Services - Service OutagesMetropolitan Government of Nashville and Davidson County · Nashville GISA listing of the location and status of current known water service outages within the Metro Water Services coverage area. Dataset is updated every 15 minutes. Source Link: https://www.nashville.gov/departments/water Metadata Document: Metro Water Services CSVGeoJSONShapefileKML+1Updated 10/27/2026
- Beach Water Quality - Automated SensorsCity of Chicago · Chicago Park DistrictThe Chicago Park District maintains sensors in the water at beaches along Chicago's Lake Michigan lakefront. These sensors generally capture the indicated measurements hourly while the sensors are in operation during the summer. During other seasons and at somCSVJSONXMLUpdated 10/27/2026Hourly
- UTILITIESCOMMUNICATION.stormwater_control_REFDOCCity of AustinThe Stormwater Control REFDOC table should be used in conjunction with the Stormwater Control feature class https://data.austintexas.gov/Utilities-and-City-Services/UTILITIESCOMMUNICATION_stormwater_control/fckq-xnpy with a join on the DRAINAGE_IDCSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.OpenChannelREFDOCCity of AustinThe Open Channel REFDOC table should be used in conjunction with the Open Channel feature class https://data.austintexas.gov/dataset/UTILITIESCOMMUNICATION_OpenChannel/n9cb-gxvv with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.ManholeREFDOCCity of AustinThe Manhole REFDOC table should be used in conjunction with the Manhole feature class https://data.austintexas.gov/dataset/Manhole/38q2-v8xr with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.JunctionREFDOCCity of AustinThe Junction REFDOC table should be used in conjunction with the Junction feature class https://data.austintexas.gov/dataset/Junction/bebd-359f with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.HeaderREFDOCCity of AustinThe Header REFDOC table should be used in conjunction with the Header feature class https://data.austintexas.gov/dataset/Header/vzfe-vh6s with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.GrateInletREFDOCCity of AustinThe Grate Inlet REFDOC table should be used in conjunction with the Grate Inlet feature class https://data.austintexas.gov/dataset/UTILITIESCOMMUNICATION_GrateInlet/6ewi-icj4 with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.DrainagePipeREFDOCCity of AustinThe Drainage Pipe REFDOC table should be used in conjunction with the Drainage Pipe feature class https://data.austintexas.gov/dataset/Drainage-Pipe/ybys-rwgs with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.CurbInletREFDOCCity of AustinThe Curb Inlet REFDOC table should be used in conjunction with the Curb Inlet feature class https://data.austintexas.gov/dataset/Curb-Inlet/7rbw-mv35 with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.DischargePumpREFDOCCity of AustinThe Discharge Pump REFDOC table should be used in conjunction with the Discharge Pump feature class https://data.austintexas.gov/dataset/Discharge-Pump/b5z6-42rk with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.BridgeInletREFDOCCity of AustinThe Bridge Inlet REFDOC table should be used in conjunction with the Bridge Inlet feature class https://data.austintexas.gov/dataset/Bridge-Inlet/t598-em66 with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.ComboInletREFDOCCity of AustinThe Combo Inlet REFDOC table should be used in conjunction with the Combo Inlet feature class https://data.austintexas.gov/dataset/Combo-Inlet/4cn2-4rhg with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- UTILITIESCOMMUNICATION.BarDitchREFDOCCity of AustinThe Bar Ditch REFDOC table should be used in conjunction with the Bar Ditch feature class https://data.austintexas.gov/dataset/Bar-Ditch/eqiz-dc5p with a join on the DRAINAGE_ID.CSVJSONXMLUpdated 10/27/2026Daily
- Fire HydrantsDistrict of Columbia · DC WaterThis layer contains points representing locations for fire hydrants in the District of Columbia.CSVGeoJSONShapefileKML+1Updated 10/27/2026
- Recreational Water AdvisoriesState of Delaware · Department of Natural Resources and Environmental ControlData on advisories issued for water quality problems in selected recreational water areas.CSVJSONXMLUpdated 10/27/2026Continuously
- Well PermitsState of Delaware · Department of Natural Resources and Environmental Control, Division of WaterA listing of permits for water wells. The dataset includes information such as location (tax parcel), capacity, date and permit number. Specific location data, for some well types, is redacted per state law.CSVJSONGeoJSONXMLUpdated 10/27/2026Daily
- Storm Water Notices of IntentState of Delaware · Department of Natural Resources and Environmental Control, Division of Watershed StewardshipDatabase of Notices of Intent (NOI) to apply for coverage under the National Pollutant Discharge Elimination System (NPDES) general permit for storm water discharges associated with construction activity. A record of planned construction activities that might CSVJSONGeoJSONXMLUpdated 10/27/2026Daily
- Reported Sewer Overflows (New for 2023)State of Maryland · Maryland Department of the EnvironmentThis report has replaced the https://opendata.maryland.gov/Energy-and-Environment/Reported-Sewer-Overflows/3rgd-zjxx/about_data Reported Sewer Overflows. This report contains overflows from February 10th, 2023, onward. Although MDE requires that all public sewCSVJSONXMLUpdated 10/27/2026Daily
- Septic Systems in Boulder County ColoradoState of Colorado · BOCOSeptic system data including type, status, location, etc for dwellings within Boulder County, CO provided by Boulder County.CSVJSONXMLUpdated 10/27/2026Daily
- Water Quality Sampling DataCity of AustinData collected to assess water quality conditions in the natural creeks, aquifers and lakes in the Austin area. This is raw data, provided directly from our Water Resources Monitoring database (WRM) and should be considered provisional. Data may or may not havCSVJSONXMLUpdated 10/27/2026As needed
- Dillman Electric BillsCity of BloomingtonElectric bills for the Dillman Road Wastewater Treatment PlantCSVJSONXMLUpdated 10/27/2026
- Maryland Department of the Environment - Water and Science Administration (WSA) Enforcement ActionsState of Maryland · Maryland Department of the Environment (MDE)Maryland Department of the Environment (MDE) Water and Science Administration (WSA) Enforcement ActionsCSVJSONXMLUpdated 10/27/2026Daily
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Frequently asked questions
- Who publishes water data?
- The largest publishers in this catalog are Department of the Interior, National Oceanic and Atmospheric Administration, Department of Commerce, U.S. Census Bureau, Department of Commerce.
- How do I download water data?
- Open any dataset to see its file formats (CSV, JSON, GeoJSON and more) and API links. Every link goes to the official government source.
- How are datasets assigned to topics?
- We read each dataset's category, keywords and title from the source catalog and file it under up to three topics, so some datasets appear in more than one topic.
Source: Data.gov Catalog (GSA), state and local open data portals · Last updated 10/27/2026