{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -99.57111, 36.55389 ] }, "properties":{ "provider":"SWT", "code":"FSUP", "slug":"fsup", "elevation":1974.5, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OK", "kind":"PROJECT", "nearest_city":"Fort Supply, OK", "public_name":"Ft. Supply Lake", "location_code":2296051, "nsid":null, "aliases":{ "NIDID":"OK10318", "CWMS Standard Naming":"FSUP", "CWMS Legacy Naming":"FSUP", "USGS Station Number":"07236500", "DCP Platform ID":"CE5B9E88", "NWS Handbook 5 ID":"FSLO2" }, "timeseries":[ { "tsid":"FSUP.Flow-Res In.Ave.~8Hours.8Hours.Rev-Ccp", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Res In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T13:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"FSUP.Flow-Res Out.Inst.1Hour.0.Rev-Regi-Flowgroup", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Res Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"FSUP.Precip-Inc.Total.1Hour.1Hour.Ccp-Rev", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip-Inc", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"FSUP.Temp-Air.Inst.1Hour.0.Ccp-Rev", "label":"Air Temperature", "base_parameter":"Temp", "parameter":"Temp-Air", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-04-14T22:00:00Z", "latest_value":84.2, "delta24h":null, "sort_order":22, "results":null }, { "tsid":"FSUP.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":13218.5, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"FSUP.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":13218.5, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"FSUP.Elev.Inst.1Hour.0.Ccp-Rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":2004.5, "delta24h":null, "sort_order":1, "results":null } ], "name":"Ft. Supply Lake", "hasResopsAverages":"true", "nidId":"OK10318", "nidid":"", "levels":[ { "slug":"elev.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.24-hr Surveillance Begins", "latest_value":2010, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.auxiliary spillway crest", "label":"Auxiliary Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Auxiliary Spillway Crest", "latest_value":2028, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Bottom of Conservation", "latest_value":1990, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Bottom of Flood Control", "latest_value":2004, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of normal", "label":"Bottom of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Bottom of Normal", "latest_value":1990, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.invert at lowest intake", "label":"Invert at Lowest Intake", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Invert at Lowest Intake", "latest_value":1979, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.maximum pool", "label":"Maximum Pool", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Maximum Pool", "latest_value":2050.3, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.pool of record", "label":"Pool of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Pool of Record", "latest_value":2026.53, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Spillway Crest", "latest_value":2028, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Streambed", "latest_value":1974.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Conservation", "latest_value":2004, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of constant conservation", "label":"Top of Constant Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Constant Conservation", "latest_value":2004, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Dam", "latest_value":2059.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Flood", "latest_value":2028, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Inactive", "latest_value":1990, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"FSUP.Elev.Inst.0.Top of Normal", "latest_value":2004, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.24-hr Surveillance Begins", "latest_value":25895, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.auxiliary spillway crest", "label":"Auxiliary Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Auxiliary Spillway Crest", "latest_value":97947, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Bottom of Flood Control", "latest_value":12221, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Bottom of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.maximum pool", "label":"Maximum Pool", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Maximum Pool", "latest_value":272164, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Spillway Crest", "latest_value":97947, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Conservation", "latest_value":12221, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of constant conservation", "label":"Top of Constant Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Constant Conservation", "latest_value":12221, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Dam", "latest_value":368080, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Flood", "latest_value":97947, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Inactive", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"FSUP.Stor.Inst.0.Top of Normal", "latest_value":12221, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549928, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":82, "damLength":12625, "distance":null, "drainageArea":1735, "eapId":1, "dsacAssignedDate":"2018-11-26T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-12-10T12:00:00.000Z", "eapLastRevDate":"2023-11-02T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OK10318", "oldFederalId":"OK10318", "hazardId":4, "hydraulicHeight":75, "inspectionAuthorityId":0, "inspectionDate":"2022-10-18T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":36.54905474, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-99.560570722, "maxDischarge":210000, "maxStorage":100700, "nidHeight":85, "nidStorage":100700, "normalStorage":13900, "numberOfLocks":0, "operationalStatusDate":"2018-11-26T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers completed construction of Fort Supply Dam in 1942 with the primary purpose to reduce flooding in downstream communities. The dam consists of an earthen embankment, a concrete gate tower with a conduit, and an ungated spillway. The project is located on Wolf Creek about 2 miles southeast of Fort Supply, OK; 3 miles north of the confluence with the North Canadian River. During large storm events, the dam holds back excess water to reduce flooding downstream for communities along the North Canadian River. This stored water can then be released in a more controlled manner to help reduce dangerous flooding. These releases are initially regulated by the discharge conduit through the earthen dam. For larger flood events, releases are made over the ungated spillway. The dam also provides local benefits including water supply for the cities of Fort Supply and Oklahoma City, water quality monitoring, fish and wildlife habitats, and recreation.", "riskCharSummary":"USACE completed a risk assessment in April 2018 and classified the risk associated with Fort Supply Dam as moderate. The risk is primarily driven by the potential for water to flow over the embankment crest during an extreme storm resulting in embankment erosion and breach. Another item that contributed to the overall risk is the potential for water seeping through the soil foundation to lead to erosion and breach. In the remote event of a dam failure, the largest impacts would be to the cities of Fort Supply, Woodward, Seiling, Canton, El Reno, Oklahoma City, and other communities along the North Canadian River.\n\nA more likely flooding scenario includes the potential for water to flow over the spillway as intended during a large flood. Although this flooding would be less significant than if the dam were to fail lifeloss and economic impacts could still occur due to the extent of flooding.", "riskManagementMeasures":"There are numerous activities that USACE conducts on a day to day basis to help manage the risk that is posed to downstream communities. This includes conducting emergency exercises with local and state emergency responders to enhance evacuation planning, yearly updates to the EAP to improve emergency response actions, and development of a detailed communication plan for the dam. The dam is well maintained through continuous operations and maintenance activities, and USACE conducts detailed inspections of the dam during both normal lake levels and during flood events to ensure the integrity of the structure. Lastly, the dam has a robust instrumentation and monitoring program to allow USACE staff to evaluate the dam for changing conditions. These instruments are monitored regularly for any early indications of potential safety concerns at the project.", "riverName":"WOLF CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":540, "stateFedId":"OK10318", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":82, "submitDate":"2023-02-16T17:25:24.131Z", "surfaceArea":1820, "volume":6051000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1942, "congDist":"Congressional District 03, Oklahoma", "city":"FORT SUPPLY", "county":"Woodward", "aiannh":null, "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Oklahoma/Fort-Supply-Lake/", "coreTypeIds":"3", "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1;3", "nonFederalDamOnFederalId":0, "designerNames":"CESWT", "otherNames":"Fort Supply Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5", "dsacId":3, "femaRegion":"6", "lastEapExcerDate":"2024-06-11T12:00:00.000Z", "dataUpdated":"2025-07-15T19:01:23.626Z", "usaceDistrict":"Tulsa District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"111002", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":16.5738, "tenthPercentile":15.3065, "ninetiethPercentile":17.5855 }, "id":2296051, "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/2296051?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/2296051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/2296051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }