{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -116.70146, 45.24292 ] }, "properties":{ "provider":"NWW", "code":"HCD", "slug":"hcd", "elevation":1695.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OR", "kind":"PROJECT", "nearest_city":"La Grande", "public_name":"Hells Canyon Dam", "location_code":57422029, "nsid":null, "aliases":{ "NIDID":"OR00250" }, "timeseries":[ { "tsid":"HCD.Flow-In.Ave.~1Day.1Day.IDP-COMPUTED-REV", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-13T07:00:00Z", "latest_value":8576.85, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"HCD.Elev-Forebay.Inst.~1Day.0.IDP-REV", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev-Forebay", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-13T07:00:00Z", "latest_value":1685.48, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"HCD.Flow-Out.Ave.~1Day.1Day.IDP-REV", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-13T07:00:00Z", "latest_value":9400.0, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"HCD.Stor.Inst.~1Day.0.IDP-COMPUTED-REV", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-13T07:00:00Z", "latest_value":164036.83, "delta24h":null, "sort_order":11, "results":null } ], "name":"Hells Canyon Dam", "hasResopsAverages":"false", "nidId":"OR00250", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Bottom of Flood", "latest_value":1688, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of normal", "label":"Bottom of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Bottom of Normal", "latest_value":1678, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Spillway Crest", "latest_value":1638, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Streambed", "latest_value":1445, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Top of Dam", "latest_value":1695, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Top of Flood", "latest_value":1693, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HCD.Elev.Inst.0.Top of Normal", "latest_value":1688, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Bottom of Flood", "latest_value":186000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Bottom of Normal", "latest_value":166000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Spillway Crest", "latest_value":95000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Streambed", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Top of Dam", "latest_value":210000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Top of Flood", "latest_value":200000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HCD.Stor.Inst.0.Top of Normal", "latest_value":186000, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":525051, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":"NOT RATED", "conditionAssessId":5, "damHeight":320, "damLength":1000, "distance":120, "drainageArea":73300, "eapId":1, "dsacAssignedDate":null, "eapMeetsGuidelinesId":null, "emergencyContactsUpdated":null, "eapLastRevDate":null, "enforcementAuthorityId":1, "federalId":"OR00250", "oldFederalId":"OR00250", "hazardId":4, "hydraulicHeight":318, "inspectionAuthorityId":1, "inspectionDate":null, "inspectionFrequency":null, "jurisdictionAuthorityId":1, "latitude":45.24303817, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-116.70121, "maxDischarge":210000, "maxStorage":200000, "nidHeight":330, "nidStorage":200000, "normalStorage":183000, "numberOfLocks":0, "operationalStatusDate":null, "operationalStatusId":null, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":1, "politicalPartyId":null, "privateDamId":1, "projectDescription":null, "riskCharSummary":null, "riskManagementMeasures":null, "riverName":"SNAKE RIVER", "separateStructuresCount":0, "sourceAgency":"Oregon", "spillwayTypeId":1, "spillwayWidth":0, "stateFedId":"H-6", "stateRegulatoryAgency":"OWRD", "stateRegulatedId":1, "structuralHeight":330, "submitDate":"2021-04-07T12:00:00.000Z", "surfaceArea":2412, "volume":100, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1968, "congDist":"Congressional District 02, Oregon", "city":"LEWISTON, ID", "county":"Wallowa", "aiannh":null, "websiteUrl":"https://damsafety.org/oregon", "coreTypeIds":null, "damTypeIds":"11", "fedConstructionIds":null, "fedDesignIds":null, "fedFundingIds":null, "fedInspectionIds":null, "fedOperationIds":null, "fedOtherIds":null, "fedOwnerIds":null, "fedRegulatoryIds":null, "formerNames":"None", "foundationTypeIds":null, "nonFederalDamOnFederalId":1, "designerNames":"FERC", "otherNames":"None", "ownerNames":"IDAHO POWER COMPANY", "ownerTypeIds":"2", "primaryDamTypeId":11, "primaryOwnerTypeId":2, "primaryPurposeId":10, "purposeIds":"10", "dsacId":null, "femaRegion":"10", "lastEapExcerDate":null, "dataUpdated":"2021-04-07T12:00:00.000Z", "usaceDistrict":"Walla Walla District", "noConsequencesId":0, "secretaryAgricultureBuiltId":0, "nrcsWatershedAuthorizationId":5, "isAssociatedStructureId":"No", "fedRegulatedId":"No", "inundationNidAddedId":0, "damStatusId":2, "huc06":"170502", "doi_region":"CPN", "doi_region_name":"Columbia-Pacific Northwest", "doi_region_number":9 }, "id":57422029, "links":[ { "type":"application/json", "rel":"root", "title":"The landing page of this server as JSON", "href":"https://api.wwdh.internetofwater.app?f=json" }, { "type":"text/html", "rel":"root", "title":"The landing page of this server as HTML", "href":"https://api.wwdh.internetofwater.app?f=html" }, { "rel":"self", "type":"application/geo+json", "title":"This document as JSON", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/57422029?f=json" }, { "rel":"alternate", "type":"application/ld+json", "title":"This document as RDF (JSON-LD)", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/57422029?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/57422029?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }