{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -94.46833, 38.92345 ] }, "properties":{ "provider":"NWK", "code":"LGVM", "slug":"lgvm", "elevation":null, "horizontal_datum":"WGS84", "vertical_datum":"", "state":"MO", "kind":"PROJECT", "nearest_city":"Lee's Summit", "public_name":"Longview Dam & Reservoir", "location_code":5574030, "nsid":null, "aliases":{ "NIDID":"MO82202", "USGS Station Number":"06893791" }, "timeseries":[ { "tsid":"LGVM.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":893.09, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"LGVM.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":24230.59, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"LGVM.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":600.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"LGVM.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":264.29, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"LGVM.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":24230.59, "delta24h":null, "sort_order":13, "results":null } ], "name":"Longview Dam & Reservoir", "hasResopsAverages":"true", "nidId":"MO82202", "nidid":"", "levels":[ { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Bottom of Conservation", "latest_value":823.9, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Spillway Crest", "latest_value":911.3, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Streambed", "latest_value":810, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Top of Conservation", "latest_value":891, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Top of Dam", "latest_value":926.6, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Top of Flood", "latest_value":909, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of multi-purpose", "label":"Top of Multi-Purpose", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Top of Multi-Purpose", "latest_value":891, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of surcharge", "label":"Top of Surcharge", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LGVM.Elev.Inst.0.Top of Surcharge", "latest_value":922.9, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LGVM.Stor.Inst.0.Bottom of Conservation", "latest_value":122.4, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LGVM.Stor.Inst.0.Spillway Crest", "latest_value":51670.6, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LGVM.Stor.Inst.0.Top of Conservation", "latest_value":22134.1, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LGVM.Stor.Inst.0.Top of Flood", "latest_value":46943.8, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of surcharge", "label":"Top of Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LGVM.Stor.Inst.0.Top of Surcharge", "latest_value":82313.5, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550296, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1900, "distance":1, "drainageArea":50, "eapId":1, "dsacAssignedDate":"2021-05-12T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-04T12:00:00.000Z", "eapLastRevDate":"2021-01-13T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MO82202", "oldFederalId":"MO82202", "hazardId":4, "hydraulicHeight":120, "inspectionAuthorityId":0, "inspectionDate":"2023-10-25T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":38.92364173, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-94.46769911, "maxDischarge":22970, "maxStorage":46900, "nidHeight":125, "nidStorage":46900, "normalStorage":22100, "numberOfLocks":0, "operationalStatusDate":"2021-05-12T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) constructed Longview Dam, completing in 1985. Longview Dam is located at River Mile 42.9 on the Little Blue River, in Jackson County, Missouri. The dam was authorized for flood control, water supply, water quality control, recreation, and fish & wildlife enhancement. Longview Dam has reduced flood damage by more than an estimated $60.9 million (2018 price level) from 1984 to 2018. The dam is a rolled earthfill embankment approximately 1,900 feet long, the top of which is a maximum of 110 feet above the valley floor. Normal flows pass through an uncontrolled drop inlet and through a conduit underneath the dam. Downstream communities include Kansas City, MO, Lee\u2019s Summit, MO, Independence, MO, Raytown, MO, and sections of Interstate Highways I-70 and I-470. The Longview Lake project includes one reservoir dike, Elm Avenue Dike, to fill a low spot in the reservoir rim west of the spillway.", "riskCharSummary":"USACE completed a risk assessment for Longview Dam in July 2020 to determine the ability of USACE to meet the flood risk management goals of the dam. As a result, the project\u2019s risk is characterized as low. 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 flooding. Extreme rainfall events could cause the reservoir to overflow through the spillway. The spillway discharges back into the Little Blue River and spillway flows may cause flooding in the downstream communities of Kansas City, MO, Lee\u2019s Summit, MO, Independence, MO. Erosion of the spillway during a flow event could lead to release of greater volumes of water.\n\nA far deadlier scenario is an extreme flooding event that leads to inflows into the lake greater than the storage capacity causing embankment overtopping. If overtopping occurs the earthen embankment portion of dam could erode leading to a sudden release of water downstream. This would result in the immediate release of water, and extreme, life-threatening flooding downstream of the dam.", "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 continue to work with communities downstream of the dam to help them understand how they can better prepare for a potential flood.", "riverName":"LITTLE BLUE RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":200, "stateFedId":"MO82202", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":125, "submitDate":"2023-02-16T17:25:23.911Z", "surfaceArea":930, "volume":1943000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1985, "congDist":"Congressional District 05, Missouri", "city":"KANSAS CITY", "county":"Jackson", "aiannh":null, "websiteUrl":"https://www.nwk.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/", "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":"CENWK", "otherNames":"Longview 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":"2025-02-19T12:00:00.000Z", "dataUpdated":"2025-03-28T12:00:00.000Z", "usaceDistrict":"Kansas City District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"103001", "doi_region":null, "doi_region_name":"Mississippi Basin", "doi_region_number":4, "thirtyYearAverage":27.5116, "tenthPercentile":25.9996, "ninetiethPercentile":28.549 }, "id":5574030, "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/5574030?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/5574030?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/5574030?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }