{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -95.35, 34.62833 ] }, "properties":{ "provider":"SWT", "code":"SARD", "slug":"sard", "elevation":0.0, "horizontal_datum":"NAD83", "vertical_datum":"NGVD29", "state":"OK", "kind":"PROJECT", "nearest_city":"Clayton, OK", "public_name":"Sardis Lake", "location_code":1982051, "nsid":null, "aliases":{ "NIDID":"OK22199", "CWMS Standard Naming":"SARD", "CWMS Legacy Naming":"SARD", "NWS Handbook 5 ID":"CYDO2", "USGS Station Number":"07335775", "DCP Platform ID":"CE53D7F6" }, "timeseries":[ { "tsid":"SARD.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":599.1, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"SARD.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":72.99, "delta24h":null, "sort_order":22, "results":null }, { "tsid":"SARD.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":270599.99, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"SARD.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":"SARD.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":"SARD.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":270599.99, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"SARD.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":903.27, "delta24h":null, "sort_order":6, "results":null } ], "name":"Sardis Lake", "hasResopsAverages":"false", "nidId":"OK22199", "nidid":"", "levels":[ { "slug":"elev.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.24-hr Surveillance Begins", "latest_value":605, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.auxiliary spillway crest", "label":"Auxiliary Spillway Crest", 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"units":"ft", "units_long_name":"Feet" }, { "slug":"elev.pool of record", "label":"Pool of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Pool of Record", "latest_value":612.14, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Spillway Crest", "latest_value":611, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Streambed", "latest_value":530, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Conservation", "latest_value":599, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of constant conservation", "label":"Top of Constant Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Constant Conservation", "latest_value":599, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Dam", "latest_value":631, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Flood", "latest_value":607, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Inactive", "latest_value":542, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of induced surcharge", "label":"Top of Induced Surcharge", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Induced Surcharge", "latest_value":609, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SARD.Elev.Inst.0.Top of Normal", "latest_value":599, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Bottom of Normal", "latest_value":124, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Top of Conservation", "latest_value":269000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Top of Dam", "latest_value":894139, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Top of Flood", "latest_value":397022, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Top of Inactive", "latest_value":124, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SARD.Stor.Inst.0.Top of Normal", "latest_value":274190, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550253, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":83, "damLength":14138, "distance":null, "drainageArea":275, "eapId":1, "dsacAssignedDate":"2016-12-27T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-07-17T12:00:00.000Z", "eapLastRevDate":"2024-08-02T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OK22199", "oldFederalId":"OK22199", "hazardId":4, "hydraulicHeight":77, "inspectionAuthorityId":0, "inspectionDate":"2020-11-17T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":34.6283300000001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-95.349998, "maxDischarge":29400, "maxStorage":735830, "nidHeight":83, "nidStorage":735830, "normalStorage":274330, "numberOfLocks":0, "operationalStatusDate":"2016-12-27T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers completed construction of Sardis Dam in 1982 with the primary purpose of reducing flooding in downstream communities. Sardis Dam is located on Jackfork Creek, a tributary of the Kiamichi River, about 4 miles north of Clayton, OK. During large storm events, the dam holds back excess water to reduce flooding downstream. After the storm passes and the Kiamichi River level recedes, the water can be safety released into the river. Water storage and releases are managed by a gated conduit running through an earthen embankment. The project also includes an ungated auxiliary spillway. In addition to reducing flooding, the water held back by the dam forms a reservoir providing recreation benefits. Sardis Dam is also used for water supply purposes and fish and wildlife conservation.", "riskCharSummary":"USACE completed a risk assessment in December 2015 and classified the risk associated with Sardis Dam as moderate. The risk is primarily driven by the potential for water seeping through the embankment which could lead to embankment erosion and breach. Another issue identified includes the remote potential for water to seep into the conduit resulting in embankment erosion that eventually weakens the dam. Failure of the dam would include flooding downstream resulting in loss of life and economic impacts. In the remote event of a dam failure the largest impacts would be to the cities of Clayton and Antlers.\nDuring large floods the capacity of the reservoir to store water could be exceeded resulting in flow over the auxiliary spillway and downstream flooding. Although this scenario would result in less flooding than a dam breach it could still result in loss of life and economic impacts due to the extent of flooding.", "riskManagementMeasures":"USACE is taking several actions to manage and reduce the risk that Sardis Dam poses to the community. An interim risk reduction measure plan has been implemented to reduce risk at the project. Measures taken as a result of this plan include several repairs to the dam such as sealing leaky conduit joints, repairing drainage pipes, repairing gates, and the installation of new instrumentation to help monitor the dam performance.\nThere are numerous activities that USACE conducts on a day to day basis to help manage risk. 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 a robust instrumentation and monitoring system to allow USACE staff to evaluate the dam for changing conditions.", "riverName":"JACKFORK CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":215, "stateFedId":"OK22199", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":83, "submitDate":"2023-02-16T00:00:00.000Z", "surfaceArea":13610, "volume":7300000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1982, "congDist":"Congressional District 02, Oklahoma", "city":"CLAYTON", "county":"Pushmataha", "aiannh":"Choctaw OTSA", "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Oklahoma/Sardis-Lake/", "coreTypeIds":"3", "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":"Clayton Lake", "foundationTypeIds":"1;3", "nonFederalDamOnFederalId":0, "designerNames":"CESWT", "otherNames":"Sardis Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;5;8", "dsacId":3, "femaRegion":"6", "lastEapExcerDate":"2025-07-17T12:00:00.000Z", "dataUpdated":"2025-07-15T21:50:29.418Z", "usaceDistrict":"Tulsa District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"111401", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6 }, "id":1982051, "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/1982051?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/1982051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/1982051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }