{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -96.08861, 36.35167 ] }, "properties":{ "provider":"SWT", "code":"SKIA", "slug":"skia", "elevation":673.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OK", "kind":"PROJECT", "nearest_city":"Skiatook, OK", "public_name":"Skiatook Lake", "location_code":5117051, "nsid":null, "aliases":{ "NWS Handbook 5 ID":"SKLO2", "CWMS Standard Naming":"SKIA", "CWMS Legacy Naming":"SKIA", "USGS Station Number":"07176800", "DCP Platform ID":"CE5394FC", "NIDID":"OK22200" }, "timeseries":[ { "tsid":"SKIA.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":276243.19, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"SKIA.Stor.Inst.1Hour.0.Ccp-Rev", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", 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"base_parameter":"Stor", "tsid":"SKIA.Stor.Inst.0.Top of Conservation", "latest_value":321410, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SKIA.Stor.Inst.0.Top of Dam", "latest_value":982880, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SKIA.Stor.Inst.0.Top of Flood", "latest_value":499100, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SKIA.Stor.Inst.0.Top of Inactive", "latest_value":11322, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SKIA.Stor.Inst.0.Top of Normal", "latest_value":321410, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550254, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":143, "damLength":3590, "distance":null, "drainageArea":354, "eapId":1, "dsacAssignedDate":"2024-07-11T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-06-27T12:00:00.000Z", "eapLastRevDate":"2023-08-01T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OK22200", "oldFederalId":"OK22200", "hazardId":4, "hydraulicHeight":138, "inspectionAuthorityId":0, "inspectionDate":"2023-09-05T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":36.3516690000001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-96.091667, "maxDischarge":21700, "maxStorage":893000, "nidHeight":143, "nidStorage":893000, "normalStorage":331200, "numberOfLocks":0, "operationalStatusDate":"2014-07-31T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers completed construction of Skiatook Dam in 1985 with the primary purpose to reduce flooding in downstream communities. The dam consists of an earthen embankment, a concrete gate tower with an outlet tunnel, and an ungated spillway. Skiatook Dam is located on Hominy Creek about 5 miles west of Skiatook, OK on Hominy Creek, a tributary to the Verdigris River. During large storm events, the dam holds back excess water to reduce flooding downstream. This stored water can then be released in a more controlled manner to reduce dangerous flooding. These releases are regulated by a discharge tunnel through the earthen dam. For larger flood events, the ungated spillway allows additional releases to help prevent dam overtopping. Skiatook Dam also provides local benefits including water supply, water quality monitoring, fish and wildlife habitats, and recreation.", "riskCharSummary":"USACE completed a risk assessment for Skiatook Dam in 2023 and classified the risk associated with the dam as moderate. The risk is primarily driven by the potential for water overtopping the embankment. Another potential failure mode identified is the potential for water seeping through the embankment leading to erosion and failure. Failure of the dam would include catastrophic flooding downstream and widespread economic impacts and loss of life. In the remote event of a dam failure, the largest impacts would be to the cities of Skiatook, Sperry, Claremore, Owasso, Tulsa, and other communities along the Arkansas River. Key infrastructure from Avant to Webbers Falls could also be damaged or destroyed.\n\nA more likely flooding scenario includes a large release through the ungated 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.", "riskManagementMeasures":"There are numerous activities that USACE conducts on a day to day basis to help manage the risk that Skiatook Dam poses to downstream communities. This includes conducting emergency exercises with local and state emergency responders to enhance evacuation planning, yearly updates to the Emergency Action Plan 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":"HOMINY CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":100, "stateFedId":"OK22200", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":143, "submitDate":"2023-02-16T17:25:14.857Z", "surfaceArea":10540, "volume":3914000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1984, "congDist":"Congressional District 03, Oklahoma", "city":"SKIATOOK", "county":"Osage", "aiannh":"Osage Reservation", "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Oklahoma/Skiatook-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":"Skiatook Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5;8", "dsacId":3, "femaRegion":"6", "lastEapExcerDate":"2024-06-27T12:00:00.000Z", "dataUpdated":"2025-07-15T12:00:00.000Z", "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":372.7294, "tenthPercentile":305.2872, "ninetiethPercentile":423.6189 }, "id":5117051, "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/5117051?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/5117051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/5117051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }