{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -82.05733, 39.54228 ] }, "properties":{ "provider":"LRH", "code":"TomJenkins", "slug":"tomjenkins", "elevation":700.22, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OH", "kind":"PROJECT", "nearest_city":"Glouster", "public_name":"Tom Jenkins Dam", "location_code":224108, "nsid":null, "aliases":{ "Local Loc ID":"TJE", "NIDID":"OH00018" }, "timeseries":[ { "tsid":"TomJenkins-Lake.Elev.Inst.15Minutes.0.OBS", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:30:00Z", "latest_value":721.57, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"TomJenkins-Outflow.Flow.Inst.15Minutes.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:30:00Z", "latest_value":10.67, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"TomJenkins-Lake.Flow.Inst.15Minutes.0.OBS", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:30:00Z", "latest_value":0.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"TomJenkins-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:30:00Z", "latest_value":9452.49, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"TomJenkins-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":721.0, "delta24h":null, "sort_order":2, "results":null }, { "tsid":"TomJenkins-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Conservation Storage", "base_parameter":"Stor", 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"units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Streambed", "latest_value":682, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Conservation", "latest_value":710, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Dam", "latest_value":765, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Flood", "latest_value":740, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood threat", "label":"Top of Flood Threat", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Flood Threat", "latest_value":728, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Inactive", "latest_value":688.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Normal", "latest_value":721, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of record", "label":"Top of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Record", "latest_value":731.52, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of recreation", "label":"Top of Recreation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"TomJenkins.Elev.Inst.0.Top of Recreation", "latest_value":721, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Bottom of Flood", "latest_value":9067.65, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Top of Conservation", "latest_value":9260, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Top of Dam", "latest_value":66840, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Top of Flood", "latest_value":26910, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Top of Inactive", "latest_value":35, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"TomJenkins.Stor.Inst.0.Top of Normal", "latest_value":9260, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550214, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":944, "distance":3, "drainageArea":33, "eapId":1, "dsacAssignedDate":"2017-07-12T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-25T12:00:00.000Z", "eapLastRevDate":"2024-06-01T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OH00018", "oldFederalId":"OH00018", "hazardId":4, "hydraulicHeight":60, "inspectionAuthorityId":0, "inspectionDate":"2020-08-12T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.5421476940001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-82.057901379, "maxDischarge":21300, "maxStorage":26900, "nidHeight":84, "nidStorage":26900, "normalStorage":9300, "numberOfLocks":0, "operationalStatusDate":"2017-07-12T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers completed the construction of Tom Jenkins Dam in 1968. Flood Control Act of 1938 authorized the U.S. Army Corps of Engineers for the operation and maintenance of Tom Jenkins Dam.\n\nTom Jenkins Dam is a high hazard dam located in Athens County, Ohio, on the East Branch of Sunday Creek, a tributary of the Hocking River, approximately 3 miles upstream of Glouster, Ohio. Most dams that the U.S. Army Corps of Engineers manages, if breached, would lead to loss of life and/or high economic impacts downstream causing them to be labeled \u201chigh hazard\u201d. The lake is a conservation pool for flood control, recreation, fish, and wildlife, and for water conservation.\n\nThe earthen dam has a length of 94 feet and a height of 84 feet and controls a drainage area of 32.8 square miles. The spillway is located approximately 1,000 feet south of the left abutment and consists of an uncontrolled partial concrete-lined saddle with a crest width of 80 feet. Operation of the spillway during extreme flood events could be necessary to prevent the dam from overtopping. Between 1968 and 2022, the dam had prevented a total of $103 million of flood damages, which means it prevents over $1.9 million of flood damages per year.", "riskCharSummary":"Tom Jenkins Dam significantly reduce the risk of flooding to surrounding communities; however, it does not entirely eliminate the risk. Although Tom Jenkins Dam have historically performed well, extreme rain events may cause areas downstream to be flooded. Even when the dam and levee operate as intended, downstream flooding could still occur in a very large rainfall event. This event could require unusually large quantities of water to be released through the dam gates and emergency spillways. In extreme cases, this flooding could be similar to what was experienced prior to the project\u2019s construction.\n \nThe U.S. Army Corps of Engineers completed a risk assessment for Tom Jenkins Dam in 2017 and classified the risk of failure for Tom Jenkins Dam as low. The risk categorization is based on the risk of rare storm events occurring which would cause more rainfall than the dam can store safely. During such an event, the spillways have the potential to pass over 21,300 cubic feet of water per second. The operation of the spillway would be necessary to prevent the dam from overtopping and potentially breaching. \nWhile the Tom Jenkins Dam spillway has never flowed, if operated it could result in significant flooding in downstream communities from Glouster, OH to Athens, OH. Depending on the amount of water released, significant damages to houses, buildings, factories, roads, bridges, power, gas, and water supply may occur. Critical infrastructure, including roadways (evacuation routes) and bridges along the Scioto River, may not be passable due to high flood waters during spillway flows. \nWhile rare events like these have not occurred to date, if they were to happen, water is likely to reach high elevations quickly and be more than tens of feet deep depending on the location. In the rare event Tom Jenkins Dam must pass these extreme flows, follow all directions from emergency officials, including evacuation orders. Failure to do so puts you and your family\u2019s lives at risk.", "riskManagementMeasures":"There are numerous activities that U.S. Army Corps of Engineers conducts on a day-to-day basis to help manage risk at Tom Jenkins Dam. The project is well maintained through continuous operations and maintenance activities, and the U.S. Army Corps of Engineers conducts detailed inspections of the dam, levee, and dikes during both normal lake levels and during flood events. Supplementing these inspections, the dam has a specialized instrumentation and monitoring system to allow staff to continually evaluate the dam for changing conditions. Risk management and emergency response actions are being supported by conducting tabletop exercises and dam safety training with the U.S. Army Corps of Engineers staff and local and state emergency responders. Additionally, the dam\u2019s Emergency Action Plan is routinely updated to improve emergency response actions.", "riverName":"EAST BR OF SUNDAY CK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":80, "stateFedId":"OH00018", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":84, "submitDate":"2023-11-29T20:59:11.230Z", "surfaceArea":664, "volume":496100, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1950, "congDist":"Congressional District 12, Ohio", "city":"GLOUSTER", "county":"Athens", "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":"Burr Oak Lake", "ownerNames":"USACE - Huntington District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5;8", "dsacId":4, "femaRegion":"5", "lastEapExcerDate":"2024-07-25T12:00:00.000Z", "dataUpdated":"2025-07-15T12:00:00.000Z", "usaceDistrict":"Huntington District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"050302", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3, "thirtyYearAverage":12.1929, "tenthPercentile":11.5728, "ninetiethPercentile":12.8284 }, "id":224108, "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/224108?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/224108?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/224108?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }