{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -94.55673, 39.39941 ] }, "properties":{ "provider":"NWK", "code":"SMIE", "slug":"smie", "elevation":null, "horizontal_datum":"WGS84", "vertical_datum":"", "state":"MO", "kind":"PROJECT", "nearest_city":"Liberty", "public_name":"Smithville Dam & Reservoir", "location_code":15251030, "nsid":null, "aliases":{ "NIDID":"MO12084" }, "timeseries":[ { "tsid":"SMIE.Stor.Inst.1Hour.0.Best-NWK", "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":127920.75, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"SMIE.Flow-Out.Ave.1Day.1Day.Best-NWK", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T12:00:00Z", "latest_value":465.63, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"SMIE.Flow-In.Ave.1Day.1Day.Best-NWK", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T12:00:00Z", "latest_value":115.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"SMIE.Elev.Inst.1Hour.0.Best-NWK", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":862.19, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"SMIE.Stor.Inst.1Hour.0.Best-NWK", "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":127920.75, "delta24h":null, "sort_order":13, "results":null } ], "name":"Smithville Dam & Reservoir", "hasResopsAverages":"true", "nidId":"MO12084", "nidid":"", "levels":[ { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Bottom of Conservation", "latest_value":814.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Spillway Crest", "latest_value":880.2, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Streambed", "latest_value":799, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Top of Conservation", "latest_value":864.2, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Top of Dam", "latest_value":895, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Top of Flood", "latest_value":876.2, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of surcharge", "label":"Top of Surcharge", "parameter":"Elev", "base_parameter":"Elev", "tsid":"SMIE.Elev.Inst.0.Top of Surcharge", "latest_value":891.1, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SMIE.Stor.Inst.0.Bottom of Conservation", "latest_value":555, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SMIE.Stor.Inst.0.Spillway Crest", "latest_value":285672, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SMIE.Stor.Inst.0.Top of Conservation", "latest_value":141666, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SMIE.Stor.Inst.0.Top of Flood", "latest_value":243443, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of surcharge", "label":"Top of Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"SMIE.Stor.Inst.0.Top of Surcharge", "latest_value":425641, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550398, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":4000, "distance":null, "drainageArea":213, "eapId":1, "dsacAssignedDate":"2020-03-12T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-08-18T12:00:00.000Z", "eapLastRevDate":"2021-02-02T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MO12084", "oldFederalId":"MO12084", "hazardId":4, "hydraulicHeight":75, "inspectionAuthorityId":0, "inspectionDate":"2024-04-24T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.396021863, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-94.5561632499999, "maxDischarge":4830, "maxStorage":246500, "nidHeight":105, "nidStorage":246500, "normalStorage":144600, "numberOfLocks":0, "operationalStatusDate":"2020-03-12T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) constructed Smithville Dam, completing in 1979. Smithville Dam is located on the Little Platte River in Clay County, about one mile northeast of Smithville, Missouri and approximately 20 miles north of Kansas City, Missouri. Downstream of the dam is the community of Smithville, Missouri. The dam was authorized for flood control, water supply, and fish & wildlife enhancement. Smithville Dam has reduced flood damage by more than an estimated $1.6 billion (2018 price level) from 1977 to 2017. The dam is approximately 4,000 feet long composed of rolled earthfill. The top of the dam sits approximately 100 feet above the riverbed. Additionally, two rim dikes complete the reservoir rim.", "riskCharSummary":"USACE is confident that the dam is solidly built, well maintained, and will continue to significantly reduce flood risks. However, the dam alone cannot eliminate all flooding. Extreme rainfall events that exceed Smithville\u2019s storage capacity can cause the release of water down the uncontrolled spillway, even if the river at or beyond capacity to prevent overtopping and failure of dam. This can result in flooding at downstream areas or can worsen already existing flooding downstream due to the rivers being over capacity. \n\nUSACE completed a risk assessment for Smithville Dam in October 2019 to determine the ability of USACE to meet the flood risk management goals of the dam. As a result, the risk due to dam breach is characterized as low. In an extreme flood scenario, inflows into the lake may exceed the storage and release capacity of the dam, and overtopping may occur. If overtopping occurs the earthen embankment of dam could erode leading to a sudden release of water downstream. This would result in extreme flooding downstream to the community of Smithville, MO.", "riskManagementMeasures":"USACE will continue to work closely with state and local emergency managers, conduct emergency exercises and incorporate any new information into our collective emergency action plans. We will continue rigorous monitoring and surveillance of the dam and will do so more frequently when heavy rainfall causes high lake levels. Rainfall forecasts and lake levels are routinely monitored and if a high lake level is forecasted, we will promptly inform local and state emergency managers so that they can take protective actions, make flood warnings, and prepare for emergency responses. We will work with communities that are developing downstream of the dam to help them understand how they can better prepare for a potential flood.", "riverName":"LITTLE PLATTE RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":50, "stateFedId":"MO12084", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":105, "submitDate":"2023-02-16T17:25:14.925Z", "surfaceArea":7190, "volume":4090851, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1979, "congDist":"Congressional District 06, Missouri", "city":"SMITHVILLE", "county":"Clay", "aiannh":null, "websiteUrl":"https://www.nwk.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/", "coreTypeIds":null, "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":null, "nonFederalDamOnFederalId":0, "designerNames":null, "otherNames":"Smithville Lake", "ownerNames":"USACE - Kansas City District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;4;5;8", "dsacId":4, "femaRegion":"7", "lastEapExcerDate":"2025-02-06T12:00:00.000Z", "dataUpdated":"2025-02-19T12:00:00.000Z", "usaceDistrict":"Kansas City District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"102400", "doi_region":null, "doi_region_name":"Mississippi Basin", "doi_region_number":4, "thirtyYearAverage":169.558, "tenthPercentile":158.4442, "ninetiethPercentile":184.6844 }, "id":15251030, "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/15251030?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/15251030?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/15251030?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }