{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -82.57699, 40.50607 ] }, "properties":{ "provider":"LRH", "code":"NoBrKokosing", "slug":"nobrkokosing", "elevation":1100.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OH", "kind":"PROJECT", "nearest_city":"Fredericktown", "public_name":"North Br Kokosing River Lake", "location_code":562108, "nsid":null, "aliases":{ "Local Loc ID":"NBK", "NIDID":"OH00009" }, "timeseries":[ { "tsid":"NoBrKokosing-Lake.Elev.Inst.1Day.0.RUL", "label":"Elevation Rule Curve", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T17:00:00Z", "latest_value":1121.0, "delta24h":null, "sort_order":2, "results":null }, { "tsid":"NoBrKokosing-Outflow.Flow.Inst.15Minutes.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:15:00Z", "latest_value":62.8, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"NoBrKokosing-Lake.Elev.Inst.15Minutes.0.OBS", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:15:00Z", "latest_value":1121.78, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"NoBrKokosing-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:15:00Z", "latest_value":1171.7, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"NoBrKokosing-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:15:00Z", "latest_value":1171.7, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"NoBrKokosing-Lake.Flow.Inst.15Minutes.0.OBS", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:15:00Z", "latest_value":62.8, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"NoBrKokosing-Lake.Precip.Total.15Minutes.15Minutes.OBS", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T22:15:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null } ], "name":"North Br Kokosing River Lake", "hasResopsAverages":"false", "nidId":"OH00009", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Bottom of Flood", "latest_value":1121, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Streambed", "latest_value":1098.01, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Conservation", "latest_value":1121, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Dam", "latest_value":1169, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Flood", "latest_value":1146, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood threat", "label":"Top of Flood Threat", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Flood Threat", "latest_value":1130, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Inactive", "latest_value":1108, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Normal", "latest_value":1121, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of record", "label":"Top of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Record", "latest_value":1143.13, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of recreation", "label":"Top of Recreation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NoBrKokosing.Elev.Inst.0.Top of Recreation", "latest_value":1121, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Bottom of Flood", "latest_value":1043, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Top of Conservation", "latest_value":710, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Top of Dam", "latest_value":56213, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Top of Flood", "latest_value":14885, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Top of Inactive", "latest_value":103, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NoBrKokosing.Stor.Inst.0.Top of Normal", "latest_value":1043, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550247, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1400, "distance":2, "drainageArea":45, "eapId":1, "dsacAssignedDate":"2021-06-23T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-25T12:00:00.000Z", "eapLastRevDate":"2011-07-05T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OH00009", "oldFederalId":"OH00009", "hazardId":4, "hydraulicHeight":45, "inspectionAuthorityId":0, "inspectionDate":"2023-08-23T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.5057443090001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-82.576524698, "maxDischarge":13500, "maxStorage":14885, "nidHeight":71, "nidStorage":14885, "normalStorage":1043, "numberOfLocks":0, "operationalStatusDate":"2021-06-23T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"North Branch of Kokosing Dam was constructed by the United States Army Corps of Engineers (USACE) in 1972 for flood risk reduction in the Muskingum River Basin of southeast Ohio. The dam is located on the North Branch of Kokosing River approximately 9 miles upstream from its confluence with the Kokosing River. Fredericktown, Ohio is the closest town to the dam, sitting 2.2 miles to the northwest.\n\nThe project is composed of an earthen embankment, a vertical intake, a stilling basin, a concrete-lined spillway, and a dike. The primary use of the project is flood control, but other uses include recreation and conservation.", "riskCharSummary":"USACE classifies the risk associated with failure of North Branch Kokosing Dam as moderate. Residents and structures at Fredericktown, Ohio would face the first consequences of a dam failure, as it lies 3 miles downstream from the dam. The main potential failures associated with North Branch of Kokosing Dam are water overtopping the dam, leakage behind the spillway wall, and erosion of the embankment or spillway. All three would create flooding downstream that could destroy homes, business, roads, bridges, and railroads in surrounding communities.\nOvertopping the dam could occur during an intense precipitation event that could fill the reservoir completely. Furthermore, the concrete walls of the spillway could fail due to seepage behind the walls, or the earthen dam could erode from water accumulation inside the dam. Both would create the same flooding event as water overtopping the dam.", "riskManagementMeasures":"USACE has several measures in place to minimize risk at North Branch of Kokosing Dam. Dam overtopping would most likely occur during an extremely high precipitation event. Such an event is unlikely to occur under current climatic conditions; additionally, USACE monitors water levels consistently, which grants substantial warning time to evacuate downstream communities if a concerning amount of precipitation were to accumulate. Structures exist to minimize seepage along the spillway and earthen embankment. Furthermore, personnel inspect the dam and spillway regularly to ensure minimal erosion risk within the structures. Both were found to be in excellent shape during the last inspection.", "riverName":"NORTH BRANCH OF KOKOSING", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":60, "stateFedId":"OH00009", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":71, "submitDate":"2023-10-17T18:56:17.396Z", "surfaceArea":154, "volume":990453, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1972, "congDist":"Congressional District 12, Ohio", "city":"FREDERICKTOWN", "county":"Knox", "aiannh":null, "websiteUrl":"https://www.lrh.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":"CELRH", "otherNames":"North Branch Kokosing Lake", "ownerNames":"USACE - Huntington District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;4;5", "dsacId":3, "femaRegion":"5", "lastEapExcerDate":"2024-07-25T12:00:00.000Z", "dataUpdated":"2025-07-16T12:00:00.000Z", "usaceDistrict":"Huntington District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"050400", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3 }, "id":562108, "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/562108?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/562108?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/562108?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }