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"nidId":"OH00003", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Dover.Elev.Inst.0.Bottom of Flood", "latest_value":862, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Dover.Elev.Inst.0.Streambed", "latest_value":862, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Dover.Elev.Inst.0.Top of Dam", "latest_value":931, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Dover.Elev.Inst.0.Top of Flood", "latest_value":916, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood threat", "label":"Top of Flood Threat", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Dover.Elev.Inst.0.Top of Flood 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"base_parameter":"Stor", "tsid":"Dover.Stor.Inst.0.Bottom of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Dover.Stor.Inst.0.Top of Dam", "latest_value":399700, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Dover.Stor.Inst.0.Top of Flood", "latest_value":203000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Dover.Stor.Inst.0.Top of Inactive", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Dover.Stor.Inst.0.Top of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550201, "associatedStructuresCount":6, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":824, "distance":null, "drainageArea":1405, "eapId":1, "dsacAssignedDate":"2016-05-05T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-25T12:00:00.000Z", "eapLastRevDate":"2011-07-29T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OH00003", "oldFederalId":"OH00003", "hazardId":4, "hydraulicHeight":56, "inspectionAuthorityId":0, "inspectionDate":"2021-05-27T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.5576996500001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-81.412536662, "maxDischarge":123000, "maxStorage":203000, "nidHeight":83, "nidStorage":203000, "normalStorage":0, "numberOfLocks":0, "operationalStatusDate":"2016-05-05T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The Dover Dam and Levees (Corundite, Fairfield, Somerdale, U.S. Brick-Norton Chemical) Project is one of a system of projects designed to provide flood control, recreation, water conservation and fish and wildlife enhancement in the Muskingum Watershed in north central Ohio. The dam was built with the original system of 14 reservoir projects in the Muskingum River Basin in cooperation with the Muskingum Watershed Conservancy District. The contract for construction of the dam was award with a notice to proceed in May 1935 and construction was complete in November 1937. \n\nDover Dam has six upstream appurtenant levees which provide a barrier to the upstream communities or businesses which would otherwise be flooded by the pool created behind the dam. Those levees are the Zoar Levee, Zoar Diversion Dam, Somerdale Levee, Corundite Levee, US Brick (Norton Chemical) Levee, and Fairfield Levee. Zoar Levee protects the historic town of Zoar, Ohio, which is located four miles north of the dam. The Zoar Diversion Dam is at the same location as Zoar Levee. Somerdale Levee is located about three miles east of Dover Dam. Corundite Levee is located about 4 miles northwest of the dam. US Brick (Norton Chemical) Levee is located about 4.5 miles northeast of the dam. Fairfield Levee is located about two miles northeast of the dam.", "riskCharSummary":"Dover dam and levees significantly reduce the risk of flooding to surrounding communities. However, they do not entirely eliminate risk. Although Dover Dam has historically performed well, extreme rain events may cause areas downstream and leveed areas to be flooded. Even when the dam and levees 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 spillway. In extreme cases, this flooding could be similar to what was experienced prior to the dam\u2019s construction.\n\nThe U.S. Army Corps of Engineers completed a risk assessment for Dover Dam in 2016 and classified the risk associated with failure as low. This 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 123,000 cubic feet of water per second. The operation of the spillway would be necessary to prevent the dam from overtopping and potentially breaching.\n\nWhile the Dover Dam spillway has never seen flow, if operated it could result in significant flooding in downstream communities from Dover, OH to New Philadelphia, 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 Tuscarawas, may not be passable due to high flood waters during spillway flows. \n\nWhile rare events like these have not occurred to date, if they were to happen, water is likely to reach hillside to hillside quickly and be more than tens of feet deep depending on the location. In the unlikely event Dover Dam must pass these extreme waters, 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 Dover Dam, Zoar Levee, Somerdale Levee, Fairfield Levee, Norton Chemical Levee, and Corundite Levee. The project is well maintained through continuous operations and maintenance activities, and U.S. Army Corps of Engineers conducts detailed inspections of the dam and levees 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 emergency exercises and dam safety training with 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":"TUSCARAWAS RIVER", "separateStructuresCount":6, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":338, "stateFedId":"OH00003", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":83, "submitDate":"2023-02-16T17:25:37.898Z", "surfaceArea":0, "volume":155500, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1938, "congDist":"Congressional District 06, Ohio", "city":"DOVER", "county":"Tuscarawas", "aiannh":null, "websiteUrl":"https://www.lrh.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/", "coreTypeIds":"2", "damTypeIds":"9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CELRH", "otherNames":null, "ownerNames":"USACE - Huntington District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9", "dsacId":4, "femaRegion":"5", "lastEapExcerDate":"2024-07-25T12:00:00.000Z", "dataUpdated":"2025-04-17T12:00:00.000Z", "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":542108, "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/542108?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/542108?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/542108?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }