{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -92.51515, 39.75216 ] }, "properties":{ "provider":"NWK", "code":"LNGB", "slug":"lngb", "elevation":null, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"MO", "kind":"PROJECT", "nearest_city":"Macon", "public_name":"Long Branch Dam & Reservoir", "location_code":5580030, "nsid":null, "aliases":{ "NIDID":"MO11176", "USGS Station Number":"06906190" }, "timeseries":[ { "tsid":"LNGB.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":39081.49, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"LNGB.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":39081.49, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"LNGB.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":140.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"LNGB.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":792.93, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"LNGB.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":146.19, "delta24h":null, "sort_order":7, "results":null } ], "name":"Long Branch Dam & Reservoir", "hasResopsAverages":"true", "nidId":"MO11176", "nidid":"", "levels":[ { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Bottom of Conservation", "latest_value":754.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Spillway Crest", "latest_value":809, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Streambed", "latest_value":750, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Top of Conservation", "latest_value":791, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Top of Dam", "latest_value":826, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Top of Flood", "latest_value":801, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of surcharge", "label":"Top of Surcharge", "parameter":"Elev", "base_parameter":"Elev", "tsid":"LNGB.Elev.Inst.0.Top of Surcharge", "latest_value":820.7, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LNGB.Stor.Inst.0.Bottom of Conservation", "latest_value":28, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LNGB.Stor.Inst.0.Spillway Crest", "latest_value":97862, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LNGB.Stor.Inst.0.Top of Conservation", "latest_value":34189, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LNGB.Stor.Inst.0.Top of Flood", "latest_value":64516, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of surcharge", "label":"Top of Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LNGB.Stor.Inst.0.Top of Surcharge", "latest_value":163112, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550397, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":3800, "distance":null, "drainageArea":109, "eapId":1, "dsacAssignedDate":"2019-09-19T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-11-21T12:00:00.000Z", "eapLastRevDate":"2020-09-30T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MO11176", "oldFederalId":"MO11176", "hazardId":4, "hydraulicHeight":71, "inspectionAuthorityId":0, "inspectionDate":"2024-07-17T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.750777133, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-92.514375015, "maxDischarge":5570, "maxStorage":98000, "nidHeight":80, "nidStorage":98000, "normalStorage":35000, "numberOfLocks":0, "operationalStatusDate":"2019-09-19T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) constructed Long Branch Dam, completing in 1978. Long Branch Dam is located at River Mile 78 on the East Fork Little Chariton River, in Macon County, Missouri. The dam was authorized for flood control, water supply, water quality control, recreation, and fish & wildlife enhancement. Long Branch Dam has reduced flood damage by more than an estimated $82.9 million (2018 price level) from 1978 to 2017. Water supply benefits are estimated at $6.3 million annually. The dam is a rolled earthfill embankment approximately 3,800 feet long, the top of which is a maximum of 71 feet above the valley floor. Downstream of the dam the population is very sparse; the majority of the affected area due to flooding is agricultural land.", "riskCharSummary":"USACE completed a risk assessment for Long Branch Dam in January 2019 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 to the East Fork Little Chariton River and spillway flows may cause flooding of the agricultural land downstream. Erosion of the unlined spillway may occur during spillway flows.\n\nIf an extreme flooding event that leads to inflows into the reservoir greater than the reservoir capacity, overtopping may occur. 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 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 reservoir levels. Rainfall forecasts and reservoir levels are routinely monitored and if a high reservoir 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 and farmers downstream of the dam to help them understand how they can better prepare for a potential flood.", "riverName":"EAST FORK LITTLE CHARITON", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":50, "stateFedId":"MO11176", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":80, "submitDate":"2023-02-16T17:25:22.910Z", "surfaceArea":2430, "volume":1708600, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1978, "congDist":"Congressional District 06, Missouri", "city":"MACON", "county":"Macon", "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":"3", "nonFederalDamOnFederalId":0, "designerNames":"CENWK", "otherNames":"Long Branch Lake", "ownerNames":"USACE - Kansas City District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;5;8", "dsacId":4, "femaRegion":"7", "lastEapExcerDate":"2025-03-04T12:00:00.000Z", "dataUpdated":"2025-03-04T12:00:00.000Z", "usaceDistrict":"Kansas City District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"102802", "doi_region":null, "doi_region_name":"Mississippi Basin", "doi_region_number":4, "thirtyYearAverage":45.0372, "tenthPercentile":36.8428, "ninetiethPercentile":51.9622 }, "id":5580030, "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/5580030?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/5580030?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/5580030?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }