{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -95.04917, 35.59667 ] }, "properties":{ "provider":"SWT", "code":"TENK", "slug":"tenk", "elevation":0.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OK", "kind":"PROJECT", "nearest_city":"Gore, OK", "public_name":"Tenkiller Lake", "location_code":3660051, "nsid":null, "aliases":{ "NIDID":"OK10311", "CWMS Standard Naming":"TENK", "CWMS Legacy Naming":"TENK", "NWS Handbook 5 ID":"TENO2", "USGS Station Number":"07197500", "DCP Platform ID":"CE61840E" }, "timeseries":[ { "tsid":"TENK.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":898.44, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"TENK.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", 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Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TENK.Stor.Inst.0.Top of Induced Surcharge", "latest_value":1323200, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TENK.Stor.Inst.0.Top of Normal", "latest_value":654250, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of power", "label":"Top of Power", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TENK.Stor.Inst.0.Top of Power", "latest_value":654250, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550223, "associatedStructuresCount":1, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":197, "damLength":4940, "distance":null, "drainageArea":1610, "eapId":1, "dsacAssignedDate":"2020-05-04T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-02-12T12:00:00.000Z", "eapLastRevDate":"2024-02-29T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OK10311", "oldFederalId":"OK10311", "hazardId":4, "hydraulicHeight":192, "inspectionAuthorityId":0, "inspectionDate":"2024-03-05T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":35.5937412070001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-95.037936378, "maxDischarge":290400, "maxStorage":1230800, "nidHeight":197, "nidStorage":1230800, "normalStorage":654100, "numberOfLocks":0, "operationalStatusDate":"2020-05-04T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers (USACE) completed construction of Tenkiller Dam in 1953 with the primary purpose if reducing flooding downstream. The dam also was constructed for purposes of water supply, water quality, recreation, fish and wildlife, and hydropower. The dam is located in eastern Oklahoma in Sequoyah County about 7 miles northeast of Gore, Oklahoma. The project consists of an earthen embankment, a tunnel for making flood releases, two concrete spillways with gates for larger flood releases, and a hydroelectric power plant that generates power for Sequoyah County. Oklahoma State Highway 100 runs across the top of the dam, which connects the town of Gore and the city of Tahlequah.", "riskCharSummary":"USACE completed a risk assessment in 2019 and classified the risk associated with Tenkiller Dam as low. Although extremely unlikely, the two primary risks to the integrity of the dam are: (1) the potential for a flood so large that the capacity of the dam to store water is exceeded and water flows over the top of the dam even with maximum possible releases being made through the gates, and (2) inability to open the spillway gates due to mechanical or electrical failure of the spillway gates leads to water flowing over the top of the dam. In the remote event of a dam failure, the most immediate impacts would be to the towns of Gore and Webbers Falls in Oklahoma, and Fort Smith and Van Buren in Arkansas.\n\nA more likely flooding scenario includes a large release through the gated spillway during a flood with the project operating as intended. Although the inundation would not be as great as a breach of the dam, this scenario could still result in widespread economic impacts and loss of life due to the extent of the flooding possible as part of normal operation of the dam.", "riskManagementMeasures":"USACE is taking several actions to manage and reduce the risk that Tenkiller Dam poses to the community. This includes conducting emergency exercises with local and state emergency responders to enhance evacuation planning, routine updates to the Emergency Action Plan to improve emergency response actions, and development of a detailed communication plan for the dam. Additionally, 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 an instrumentation and monitoring program to allow USACE staff to evaluate the dam for changing conditions.", "riverName":"ILLINOIS RIVER", "separateStructuresCount":1, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":590, "stateFedId":"OK10311", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":197, "submitDate":"2023-02-16T17:25:34.656Z", "surfaceArea":12900, "volume":75050, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1952, "congDist":"Congressional District 02, Oklahoma", "city":"GORE", "county":"Sequoyah", "aiannh":"Cherokee OTSA", "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Oklahoma/Tenkiller-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", "nonFederalDamOnFederalId":0, "designerNames":"CESWT", "otherNames":"Tenkiller Dam;Tenkiller Ferry Lake;Tenkiller Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;6", "dsacId":4, "femaRegion":"6", "lastEapExcerDate":"2025-02-12T12:00:00.000Z", "dataUpdated":"2025-07-15T19:43:53.267Z", "usaceDistrict":"Tulsa District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"111101", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":842.5651, "tenthPercentile":796.7385, "ninetiethPercentile":877.2618 }, "id":3660051, "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/3660051?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/3660051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/3660051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }