{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -95.97139, 36.88556 ] }, "properties":{ "provider":"SWT", "code":"COPA", "slug":"copa", "elevation":0.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OK", "kind":"PROJECT", "nearest_city":"Copan, OK", "public_name":"Copan Lake", "location_code":5338051, "nsid":null, "aliases":{ "NIDID":"OK21489", "CWMS Standard Naming":"COPA", "CWMS Legacy Naming":"COPA", "USGS Station Number":"07174300", "DCP Platform ID":"CE54A352", "NWS Handbook 5 ID":"CPLO2" }, "timeseries":[ { "tsid":"COPA.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T23:00:00Z", "latest_value":37241.78, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"COPA.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T23:00:00Z", "latest_value":37241.78, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"COPA.Elev.Inst.1Hour.0.Ccp-Rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T23:00:00Z", "latest_value":710.57, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"COPA.Precip-Inc.Total.1Hour.1Hour.Ccp-Rev", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip-Inc", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T23:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"COPA.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":"COPA.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":476.93, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"COPA.Temp-Air.Inst.1Hour.0.Ccp-Rev", "label":"Air Temperature", "base_parameter":"Temp", "parameter":"Temp-Air", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-04-14T23:00:00Z", "latest_value":81.36, "delta24h":null, "sort_order":22, "results":null } ], "name":"Copan Lake", "hasResopsAverages":"true", "nidId":"OK21489", "nidid":"", "levels":[ { "slug":"elev.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.24-hr Surveillance Begins", "latest_value":729, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Bottom of Conservation", "latest_value":687.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Bottom of Flood Control", "latest_value":710, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of normal", "label":"Bottom of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Bottom of Normal", "latest_value":687.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.daily surveillance level", "label":"Daily Surveillance Level", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Daily Surveillance Level", "latest_value":724, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.maximum pool", "label":"Maximum Pool", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Maximum Pool", "latest_value":739.1, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.pool of record", "label":"Pool of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Pool of Record", "latest_value":735.35, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Spillway Crest", "latest_value":696.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Streambed", "latest_value":672, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Conservation", "latest_value":710, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of constant conservation", "label":"Top of Constant Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Constant Conservation", "latest_value":710, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Dam", "latest_value":745, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Flood", "latest_value":732, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Inactive", "latest_value":687.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of induced surcharge", "label":"Top of Induced Surcharge", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Induced Surcharge", "latest_value":738, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"COPA.Elev.Inst.0.Top of Normal", "latest_value":710, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.24-hr Surveillance Begins", "latest_value":181750, "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":"COPA.Stor.Inst.0.Bottom of Flood Control", "latest_value":34634, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Bottom of Normal", "latest_value":749, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.maximum pool", "label":"Maximum Pool", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Maximum Pool", "latest_value":324863, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Spillway Crest", "latest_value":4743, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Conservation", "latest_value":34646, "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":"COPA.Stor.Inst.0.Top of Constant Conservation", "latest_value":34634, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Dam", "latest_value":442040, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Flood", "latest_value":218721, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Inactive", "latest_value":644, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of induced surcharge", "label":"Top of Induced Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Induced Surcharge", "latest_value":305990, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"COPA.Stor.Inst.0.Top of Normal", "latest_value":34634, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549933, "associatedStructuresCount":1, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":73, "damLength":7730, "distance":null, "drainageArea":505, "eapId":1, "dsacAssignedDate":"2022-08-11T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-18T12:00:00.000Z", "eapLastRevDate":"2023-08-01T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OK21489", "oldFederalId":"OK21489", "hazardId":4, "hydraulicHeight":67, "inspectionAuthorityId":0, "inspectionDate":"2021-05-17T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":36.884057845, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-95.968633502, "maxDischarge":199070, "maxStorage":338000, "nidHeight":73, "nidStorage":338000, "normalStorage":43400, "numberOfLocks":0, "operationalStatusDate":"2022-08-11T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers (USACE) completed construction of Copan Dam in 1980 with the primary purpose to reduce flooding in downstream communities. The dam consists of an earthen embankment and a concrete gated spillway. The project is located on the Little Caney River, a tributary of the Caney River within the Verdigris River watershed, about 9 miles north of Bartlesville, OK. During large storm events, the dam holds back excess water to reduce flooding in downstream communities along the Caney and Verdigris rivers. This stored water can then be released in a more controlled manner to reduce dangerous flooding. These releases are regulated by gates inset into the concrete spillway. This project is a portion of the larger flood control measures along the Arkansas River Basin. Associated with the dam also is levee north of the dam which provides flood protection for the town of Caney, KS.", "riskCharSummary":"USACE completed a risk assessment for Copan Dam in 2022 and classified the risk associated with the dam as moderate. The risk is driven by the potential for water to flow over the embankment crest during a very extreme flood event resulting in embankment erosion and breach. Failure of the dam would include downstream flooding, widespread economic impacts, and significant loss of life. In the remote event of a dam failure, the largest impacts would be to the cities of Bartlesville, Claremore, Owasso, and Tulsa.\n\nThere is also flood risk associated with the dam due to normal operation which could include large releases through the gated spillway. Although the flooding would be less significant during this scenario compared to a dam breach, widespread economic impacts and life loss could still occur depending on 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":"LITTLE CANEY", "separateStructuresCount":1, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":495, "stateFedId":"OK21489", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":73, "submitDate":"2023-02-16T17:25:27.645Z", "surfaceArea":4850, "volume":3852800, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1983, "congDist":"Congressional District 02, Oklahoma", "city":"DEWEY", "county":"Washington", "aiannh":"Cherokee OTSA", "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Oklahoma/Copan-Lake/", "coreTypeIds":"3", "damTypeIds":"9;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":"Copan Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;5;8", "dsacId":3, "femaRegion":"6", "lastEapExcerDate":"2025-06-11T12:00:00.000Z", "dataUpdated":"2025-07-16T12:00:00.000Z", "usaceDistrict":"Tulsa District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"110701", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":54.378, "tenthPercentile":41.0873, "ninetiethPercentile":71.6236 }, "id":5338051, "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/5338051?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/5338051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/5338051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }