{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -90.77088, 37.13492 ] }, "properties":{ "provider":"SWL", "code":"Clearwater_Dam", "slug":"clearwater_dam", "elevation":0.0, "horizontal_datum":"NAD83", "vertical_datum":"NGVD29", "state":"MO", "kind":"PROJECT", "nearest_city":"Piedmont", "public_name":"Clearwater Dam", "location_code":563324150, "nsid":null, "aliases":{ "NIDID":"MO30203", "CWMS Legacy Naming":"Clearwater_Dam", "CWMS Standard Naming":"Clearwater_Dam" }, "timeseries":[ { "tsid":"Clearwater_Dam.Flow-Res In.Ave.1Hour.1Hour.6hr-RunAve-A2W", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Res In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":430.78, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"Clearwater_Dam-Headwater.Elev.Inst.1Hour.0.Decodes-rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":494.59, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"Clearwater_Dam-Headwater.Stor-Res.Inst.1Hour.0.CCP-Comp", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor-Res", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":20485.0, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"Clearwater_Dam-Headwater.Stor-Res.Inst.1Hour.0.CCP-Comp", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor-Res", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":20485.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"Clearwater_Dam.Flow-Res Out.Ave.1Hour.1Hour.Regi-Comp", "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":503.25, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Clearwater_Dam.Flow-Uncontrolled.Ave.1Hour.1Hour.Regi-Comp", "label":"Surcharge Release", "base_parameter":"Flow", "parameter":"Flow-Uncontrolled", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":8, "results":null }, { "tsid":"Clearwater_Dam-Tailwater.Elev-Downstream.Inst.1Hour.0.Decodes-rev", "label":"Elevation Tailwater", "base_parameter":"Elev", "parameter":"Elev-Downstream", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":452.83, "delta24h":null, "sort_order":3, "results":null } ], "name":"Clearwater Dam", "hasResopsAverages":"false", "nidId":"MO30203", "nidid":"", "levels":[ { "slug":"elev.bottom of normal", "label":"Bottom of Normal", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Bottom of Normal", "latest_value":467, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Streambed", "latest_value":454, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Top of Conservation", "latest_value":494, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Top of Dam", "latest_value":608, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Top of Flood", "latest_value":567, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Top of Inactive", "latest_value":467, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"Clearwater_Dam.Elev-Pool.Inst.0.Top of Normal", "latest_value":494, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.Bottom of Normal", "latest_value":701, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.nws_flood", "label":"NWS_Flood", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.NWS_Flood", "latest_value":21920, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.Top of Conservation", "latest_value":19600, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.Top of Flood", "latest_value":413700, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.Top of Inactive", "latest_value":701, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor-Res", "base_parameter":"Stor", "tsid":"Clearwater_Dam.Stor-Res.Inst.0.Top of Normal", "latest_value":21920, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550142, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":154, "damLength":4225, "distance":null, "drainageArea":898, "eapId":1, "dsacAssignedDate":"2024-04-16T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-05-02T12:00:00.000Z", "eapLastRevDate":"2023-07-25T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MO30203", "oldFederalId":"MO30203", "hazardId":4, "hydraulicHeight":109, "inspectionAuthorityId":0, "inspectionDate":"2023-04-24T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":37.1349514520001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-90.770891147, "maxDischarge":310000, "maxStorage":413000, "nidHeight":155, "nidStorage":413000, "normalStorage":22000, "numberOfLocks":0, "operationalStatusDate":"2014-01-23T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) operates and maintains more than 700 dams across the United States. A dam is an earthen embankment and/or solid concrete structure that is built across a river, stream, or other waterway to temporarily hold back and store water that would otherwise flow downstream. More detail related to this specific dam will be added at a future time.", "riskCharSummary":"USACE completed a risk assessment in June 2025 that characterizes the risks associated with the project as low. The dam significantly reduces the risk of flooding to surrounding communities. However, it does not entirely eliminate the risk. Although Clearwater Dam has historically performed well, extreme rain events could lead to overtopping and potential breach. Clearwater Dam has an Emergency Action Plan and Risk Reduction Plan in place to lower the risk of life loss if any of these scenarios occurred.", "riskManagementMeasures":"Dam safety training of project operation and maintenance for project personnel was conducted in February 2022. The Emergency Action Plan (EAP) is maintained and regularly updated. The EAP was last updated in April 2022. A tabletop exercise was conducted in April 2023. Participants included Little Rock District Emergency Management and Infrastructure Safety staff, state and local emergency management officials and stakeholders. Routine dam safety activities and normal operations, maintenance, monitoring, and evaluation are considered appropriate.", "riverName":"BLACK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":385, "stateFedId":"MO30203", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":155, "submitDate":"2023-10-03T00:00:00.000Z", "surfaceArea":1630, "volume":7500000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1942, "congDist":"Congressional District 08, Missouri", "city":"LEEPER", "county":"Wayne", "aiannh":null, "websiteUrl":"https://www.swl.usace.army.mil/Missions/Recreation/Lakes/Clearwater-Lake/Dam-and-Lake-Information/", "coreTypeIds":"3", "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"3", "nonFederalDamOnFederalId":0, "designerNames":"CESWL", "otherNames":"Clearwater Lake", "ownerNames":"USACE - Little Rock District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5", "dsacId":4, "femaRegion":"7", "lastEapExcerDate":"2024-08-21T12:00:00.000Z", "dataUpdated":"2025-06-03T12:00:00.000Z", "usaceDistrict":"Little Rock District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"110100", "doi_region":null, "doi_region_name":"Mississippi Basin", "doi_region_number":4 }, "id":563324150, "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/563324150?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/563324150?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/563324150?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }