{"ok":true,"data":{"metadata":{"reviewedAt":"2026-07-19","scope":"United States public and public-interest dam, reservoir, hydrology, safety, regulation, incident, and removal sources","sourceCount":14,"officialCount":9,"unofficialCount":3,"researchCount":2,"integrationCount":7},"sources":[{"id":"nid","name":"National Inventory of Dams","organization":"U.S. Army Corps of Engineers","kind":"Official federal","access":["Interactive map","Download"],"url":"https://nid.sec.usace.army.mil/","description":"The national inventory assembled from state and federal regulator submissions, covering more than 90,000 U.S. dams.","bestFor":"Dam identity, location, ownership, purpose, dimensions, hazard potential, condition fields, and regulator-reported attributes.","caution":"Hazard potential describes consequences of failure, not the probability that a dam will fail. Verify safety decisions with the responsible regulator."},{"id":"nid-feature-service","name":"NID Public Feature Service","organization":"U.S. Army Corps of Engineers","kind":"Official federal","access":["API / GIS service"],"url":"https://geospatial.sec.usace.army.mil/dls/rest/services/NID/National_Inventory_of_Dams_Public_Service/FeatureServer","description":"The public ArcGIS FeatureServer used by this site for bounded, paged live inventory queries.","bestFor":"GIS clients, reproducible API queries, state filtering, and selected feature exports.","caution":"The service caps result pages. Applications must paginate and should retain the upstream DATA_UPDATED field."},{"id":"fema-dam-safety","name":"National Dam Safety Program","organization":"Federal Emergency Management Agency","kind":"Official federal","access":["Guidance"],"url":"https://www.fema.gov/grants/mitigation/learn/dam-safety","description":"Federal dam-risk guidance, state assistance, rehabilitation grants, training, and emergency-planning resources.","bestFor":"Preparedness, emergency action planning, risk communication, grant programs, and federal guidance documents."},{"id":"state-programs","name":"State Dam Safety Program Directory","organization":"Association of State Dam Safety Officials","kind":"Official state gateway","access":["Directory","Guidance"],"url":"https://damsafety.org/states","description":"A gateway to the state and territorial agencies that regulate most non-federal dams.","bestFor":"Inspection questions, state rules, emergency contacts, permits, and the regulator responsible for a specific dam.","caution":"ASDSO is a nonprofit association; linked state agencies are the authoritative regulators."},{"id":"usbr","name":"Projects & Facilities Database","organization":"U.S. Bureau of Reclamation","kind":"Official federal","access":["Interactive map","Directory"],"url":"https://www.usbr.gov/projects/","description":"Profiles Reclamation dams, powerplants, and water projects across the western United States.","bestFor":"Federal project histories, facility facts, operating regions, and Reclamation contacts."},{"id":"usace-dams","name":"USACE Dam Safety Program","organization":"U.S. Army Corps of Engineers","kind":"Official federal","access":["Guidance","Directory"],"url":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/","description":"Safety program information for the Corps-managed dam portfolio and national dam-safety activities.","bestFor":"USACE ownership, risk-management policy, and district-level follow-up."},{"id":"ferc-hydropower","name":"Hydropower Licensing and Dam Safety","organization":"Federal Energy Regulatory Commission","kind":"Official federal","access":["Directory","Guidance"],"url":"https://www.ferc.gov/hydropower","description":"Licensing, dockets, inspection guidance, environmental review, and public participation for non-federal hydropower projects.","bestFor":"License status, filings, relicensing, public comments, dam-safety oversight, and environmental records."},{"id":"usgs-water","name":"Water Data for the Nation","organization":"U.S. Geological Survey","kind":"Official federal","access":["Interactive map","API / GIS service","Download"],"url":"https://waterdata.usgs.gov/","description":"Current and historical observations from stream, lake, reservoir, precipitation, water-quality, and groundwater monitoring locations.","bestFor":"Water levels, streamflow, reservoir observations, time series, and nearby monitoring stations.","caution":"A monitoring site is not a dam record; join by geography and verify station context."},{"id":"national-map","name":"The National Map — Hydrography","organization":"U.S. Geological Survey","kind":"Official federal","access":["Interactive map","API / GIS service","Download"],"url":"https://www.usgs.gov/programs/national-geospatial-program/national-map","description":"National hydrography, elevation, boundaries, and topographic layers useful for watershed and dam context.","bestFor":"Streams, waterbodies, watersheds, terrain, and reproducible geospatial basemaps."},{"id":"american-rivers-removals","name":"National Dam Removal Database","organization":"American Rivers","kind":"Community / unofficial","access":["Interactive map","Download"],"url":"https://www.americanrivers.org/threats-solutions/restoring-damaged-rivers/dam-removal-map/","description":"A national compilation of documented dam removals and river-restoration outcomes.","bestFor":"Removal history, restoration case studies, and identifying removal projects not represented as active inventory dams.","caution":"Advocacy-maintained data should be cross-checked with owners, regulators, and project documents."},{"id":"npdp","name":"National Performance of Dams Program","organization":"Stanford University","kind":"Research","access":["Directory","Guidance"],"url":"https://npdp.stanford.edu/","description":"Research and records focused on dam incidents, failures, and operational performance in the United States.","bestFor":"Incident and performance research, terminology, and historical failure study."},{"id":"grand","name":"Global Reservoir and Dam Database (GRanD)","organization":"Global Water System Project / NASA SEDAC","kind":"Research","access":["Download"],"url":"https://doi.org/10.7927/H4N877QK","description":"A globally harmonized research dataset of large dams and reservoirs.","bestFor":"Cross-country research, large-reservoir comparison, and global hydrologic modeling.","caution":"Coverage criteria and update cadence differ from the NID; review licensing and metadata before reuse."},{"id":"openstreetmap","name":"OpenStreetMap","organization":"OpenStreetMap contributors","kind":"Community / unofficial","access":["Interactive map","API / GIS service","Download"],"url":"https://www.openstreetmap.org/","description":"Community-maintained geographic features, including waterway=dam, reservoirs, access points, and nearby infrastructure.","bestFor":"Open geospatial context, local mapping, names, access geometry, and features absent from national datasets.","caution":"Completeness and accuracy vary. Preserve Open Database License attribution and verify critical facts."},{"id":"wikidata","name":"Wikidata","organization":"Wikimedia Foundation and contributors","kind":"Community / unofficial","access":["API / GIS service","Download"],"url":"https://www.wikidata.org/","description":"Structured, collaboratively maintained entities for many notable dams, reservoirs, rivers, operators, and historic events.","bestFor":"Entity identifiers, multilingual names, linked references, and knowledge-graph research.","caution":"Community assertions vary in sourcing; follow each statement to its cited reference."}],"learningResources":[{"title":"Federal Guidelines for Dam Safety","organization":"FEMA","url":"https://www.fema.gov/sites/default/files/documents/fema_rm-federal-guidelines-for-dam-safety.pdf","description":"The federal baseline for managing dam safety and risk."},{"title":"Living With Dams","organization":"ASDSO","url":"https://damsafety.org/public-safety","description":"Plain-language public awareness and preparedness material."},{"title":"National Water Dashboard","organization":"USGS","url":"https://dashboard.waterdata.usgs.gov/","description":"Current water, weather, flood, lake, and reservoir observations."},{"title":"Dam Safety and Inspections Guidance","organization":"FERC","url":"https://www.ferc.gov/dam-safety-and-inspections","description":"Engineering guidance and public-safety resources for regulated hydropower projects."}],"integrations":[{"id":"nid-feature-api","name":"USACE NID FeatureServer","type":"ArcGIS REST API","url":"https://geospatial.sec.usace.army.mil/dls/rest/services/NID/National_Inventory_of_Dams_Public_Service/FeatureServer","status":"integrated","use":"Powers the bounded live search and national-count endpoints on DamWatch USA."},{"id":"usace-cwms-api","name":"USACE CWMS Data API","type":"REST API","url":"https://cwms-data.usace.army.mil/cwms-data/","status":"linked","use":"Reservoir, river, location, level, and time-series data from Corps water-management offices."},{"id":"usbr-rise-api","name":"Reclamation Information Sharing Environment","type":"REST API and downloads","url":"https://data.usbr.gov/","status":"linked","use":"Reclamation water and power observations, locations, and time series."},{"id":"usgs-water-services","name":"USGS Water Services","type":"REST API","url":"https://waterservices.usgs.gov/","status":"linked","use":"Machine-readable current conditions, daily values, statistics, and site information."},{"id":"usace-dams-rss","name":"USACE Dams RSS directory","type":"RSS directory","url":"https://www.usace.army.mil/Resources/Contact/RSS/","status":"linked","use":"Official USACE news and news-release feeds filtered by the Dams category."},{"id":"usbr-rss","name":"Bureau of Reclamation RSS newsroom","type":"RSS directory","url":"https://www.usbr.gov/main/multimedia/rss.html","status":"linked","use":"Official Reclamation newsroom feed discovery for water, power, and dam updates."},{"id":"ferc-filings-rss","name":"FERC accepted filings feed","type":"RSS feed","url":"https://ecollection.ferc.gov/api/rssfeed","status":"linked","use":"Current accepted FERC filings; hydropower users should filter by project docket and verify in eLibrary."}]}}