{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -81.2765, 40.26899 ] }, "properties":{ "provider":"LRH", "code":"Clendening", "slug":"clendening", "elevation":862.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OH", "kind":"PROJECT", "nearest_city":"Tippecanoe", "public_name":"Clendening Lake", "location_code":529108, "nsid":null, "aliases":{ "Local Loc ID":"CLB", "NIDID":"OH00012" }, "timeseries":[ { "tsid":"Clendening-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":898.0, "delta24h":null, "sort_order":2, "results":null }, { "tsid":"Clendening-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":27089.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"Clendening-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":27089.0, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"Clendening-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":0.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"Clendening-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":49.93, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Clendening-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":898.31, "delta24h":null, "sort_order":1, "results":null } ], "name":"Clendening Lake", "hasResopsAverages":"true", "nidId":"OH00012", "nidid":"", "levels":[ { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Bottom of Conservation", "latest_value":862, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Bottom of Flood", "latest_value":898, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Streambed", "latest_value":858.01, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Dam", "latest_value":925.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Flood", "latest_value":910.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood threat", "label":"Top of Flood Threat", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Flood Threat", "latest_value":907, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Inactive", "latest_value":862, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Normal", "latest_value":898, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of record", "label":"Top of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Record", "latest_value":909, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of recreation", "label":"Top of Recreation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Clendening.Elev.Inst.0.Top of Recreation", "latest_value":898, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Bottom of Flood", "latest_value":26500, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Top of Conservation", "latest_value":26500, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Top of Dam", "latest_value":101000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Top of Flood", "latest_value":54000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Top of Inactive", "latest_value":27, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Clendening.Stor.Inst.0.Top of Normal", "latest_value":26500, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550248, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":950, "distance":1, "drainageArea":69, "eapId":1, "dsacAssignedDate":"2016-01-16T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-25T12:00:00.000Z", "eapLastRevDate":"2009-10-19T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OH00012", "oldFederalId":"OH00012", "hazardId":4, "hydraulicHeight":57, "inspectionAuthorityId":0, "inspectionDate":"2024-04-25T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.2690785350001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-81.276567118, "maxDischarge":13200, "maxStorage":54000, "nidHeight":64, "nidStorage":54000, "normalStorage":26500, "numberOfLocks":0, "operationalStatusDate":"2016-01-16T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers (USACE) built Clendening Dam in 1937 across the Brushy Fork of Stillwater Creek in Harrison County, Ohio, 1/2 of a mile east of Tippecanoe, Ohio and 9 miles southeast of Uhrichsville, Ohio. The dam consists of an earth and rock filled embankment with a clay center, outlet works, and a spillway. The project acts as part of a 16-reservoir system of dams designed to hold back water during flood events to reduce the risk of downstream flooding within the Muskingum River Basin in southeastern Ohio. Although the project\u2019s primary purpose is to reduce flooding downstream, it is also used for recreational purposes and fish and wildlife conservation. \n\nSince Clendening Dam was constructed it has successfully helped mitigate flood damage on multiple occasions by holding back excess water from large storm events and releasing the water in a controlled fashion. Notable historical flood events in the region occurred in January 1959, February 1979, August 1980, and January 2005, in which the dam prevented significant flooding in the nearby Village of Tippecanoe, the City of Uhrichsville, and other downstream communities. Seepage immediately downstream of the dam has been prevalent at the project since construction in 1937. In effort to reduce this seepage, remedial measures were completed in the 1970\u2019s and 1980\u2019s, such as grouting at each end of the dam and constructing a seepage blanket with relief wells along the downstream toe of the dam. Some seepage is still prevalent at the project; however, it has been significantly reduced.", "riskCharSummary":"USACE completed a risk assessment in January 2016 and classified the risk associated with a failure of Clendening Dam as moderate. This classification is primarily based on the population at risk downstream of the dam that could be flooded in the event of large releases through the dam\u2019s spillway or in the event of a dam failure. The unlikely, but far more devastating scenarios that would produce significant flooding are: 1.) erosion of the dam's soil foundation during a period of high reservoir levels could lead to a failure of the dam and 2.) an extreme rainfall event could result in water flowing over the earthen dam, eroding the dam and leading to a failure. Were either event to occur, an uncontrolled surge of water would flow out of the reservoir, flooding downstream communities. The largest impacts would be to the Village of Tippecanoe, the City of Uhrichsville, and the Village of Port Washington in Ohio where there would be little to no warning time in such an event.", "riskManagementMeasures":"There are numerous activities that USACE conducts on a day to day basis to help manage risk at Clendening Dam. The dam is well maintained through continuous operations and maintenance activities, and USACE conducts detailed inspections of the dam during both normal lake levels and during flood events. Supplementing these inspections, the dam has a specialized instrumentation and monitoring system to allow USACE staff to continually evaluate the dam for changing conditions. Robustness of the dam is being improved with implementation of an Interim Risk Reduction Measures Plan (IRRMP) to address specific risk concerns while long-term remedial measures are pursued. Risk management and emergency response actions are being supported by conducting emergency exercises and dam safety training with USACE staff and local and state emergency responders. Additionally, the dam\u2019s Emergency Action Plan is routinely updated in an effort to improve emergency response actions, and flood fighting materials are stored onsite in case of an emergency. The project is scheduled to undergo an Issue Evaluation Study (IES), where the risks identified for the project will be further evaluated.", "riverName":"BRUSHY FK OF STILLWATER CK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":128, "stateFedId":"OH00012", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":64, "submitDate":"2023-02-16T00:00:00.000Z", "surfaceArea":1800, "volume":224500, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1936, "congDist":"Congressional District 06, Ohio", "city":"TIPPECANOE", "county":"Harrison", "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":"Clendening 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":"2025-06-24T12:00:00.000Z", "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, "thirtyYearAverage":33.6807, "tenthPercentile":32.4412, "ninetiethPercentile":36.922 }, "id":529108, "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/529108?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/529108?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/529108?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }