{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -87.07167, 39.71667 ] }, "properties":{ "provider":"LRL", "code":"CMHarden", "slug":"cmharden", "elevation":640.0, "horizontal_datum":"NAD27", "vertical_datum":"NGVD29", "state":"IN", "kind":"PROJECT", "nearest_city":"Hollandsburg, IN", "public_name":"C. M. 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"conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1860, "distance":4, "drainageArea":216, "eapId":1, "dsacAssignedDate":"2022-11-10T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-05-14T12:00:00.000Z", "eapLastRevDate":"2022-05-12T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"IN03003", "oldFederalId":"IN03003", "hazardId":4, "hydraulicHeight":115, "inspectionAuthorityId":0, "inspectionDate":"2021-09-10T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.717015314, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-87.070485931, "maxDischarge":134100, "maxStorage":132800, "nidHeight":119, "nidStorage":132800, "normalStorage":49262, "numberOfLocks":0, "operationalStatusDate":"2022-11-10T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) began construction of Cecil M. Harden Dam in October 1956, and the project became operational in July 1960. Cecil M. Harden Dam is an earthen dam located on Big Raccoon Creek, 34 miles above its junction with the Wabash River. The Cecil M. Harden project consist of a 1,570-foot-long earth embankment dam, a gate-controlled outlet works and an open cut spillway through the left abutment. The project is located approximately 50 miles west of Indianapolis, Indiana in the Wabash River Basin. The project reduces flood damages along approximately 34 miles of the Big Raccoon Creek and more than 130 miles along the Wabash River. At spillway crest elevation, the pool extends from the dam site up Big Raccoon Creek approximately 15.5 miles. The lake has 216 square miles of drainage area above the dam. The record pool elevation of 689.76 feet NAVD88 occurred on 21 July 2015 which resulted in high releases from the dam\u2019s outlet but no discharge from the spillway.", "riskCharSummary":"USACE completed a risk assessment of Cecil M. Harden Dam in 2022 that characterizes the risk of the project as a Dam Safety Action Classification (DSAC) 5 which is considered Very Low relative to the dams USACE owns and operates. The dam provides flood reduction to downstream communities, primarily in the Big Raccoon Creek and Lower Wabash River watersheds. Even when the dam operates as intended, downstream flooding could still occur if a very large rainfall event were to result in unusually large quantities of water to flow through the dam spillway. There is also a very unlikely, but far more devastating scenario that would produce significant flooding, which is internal erosion of the dam's earthen embankment during a period of high reservoir levels that could lead to a breach of the dam. Another potentially disastrous scenario is erosion of the spillway leading to widening and deepening of the channel. In both of these very unlikely events, an uncontrolled surge of water could flow out of the reservoir, resulting in potentially deadly flooding along Big Raccoon Creek and the Wabash River.\n\nIf a dam failure occurred, water from the reservoir would flood downstream communities. The largest impacts would be to the communities of Ferndale, Mansfield, Bridgeton, Rosedale, Coxville, and Mecca along Big Raccoon Creek. Communities along the Wabash River from Montezuma to Terre Haute would also be impacted. A breach during spillway pool results in damages primarily to residential structures. Further downstream communities are affected less due to the attenuation of flood depths.", "riskManagementMeasures":"USACE is continuously taking significant steps to reduce the risk to the public. This includes working closely with local emergency managers, regularly updating the Emergency Action Plan, and conducting emergency exercises with state and local response teams. USACE utilizes the latest forecast, stream gauge information and coordinates closely with the National Weather service concerning conditions both upstream and downstream of the dam including inflow, outflow, and precipitation. Rainfall forecasts are used to determine when high pool events may occur. USACE regularly performs dam inspections and monitors instruments to ensure the health and integrity of the dam. The frequency of these checks increases as the lake approaches spillway crest. This ensures that the structure is performing as designed and identify areas of potential concern. Regular maintenance and repairs are performed as needed to keep the dam functioning properly.", "riverName":"RACCOON CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":200, "stateFedId":"IN03003", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":119, "submitDate":"2023-11-29T22:03:33.246Z", "surfaceArea":2060, "volume":1710300, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1960, "congDist":"Congressional District 08, Indiana", "city":"MANSFIELD", "county":"Parke", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":null, "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":null, "nonFederalDamOnFederalId":0, "designerNames":"CELRL", "otherNames":"Cecil M. Harden Lake", "ownerNames":"USACE - Louisville District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5", "dsacId":5, "femaRegion":"5", "lastEapExcerDate":"2024-05-16T12:00:00.000Z", "dataUpdated":"2025-03-07T12:00:00.000Z", "usaceDistrict":"Louisville District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"051201", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3, "thirtyYearAverage":55.0024, "tenthPercentile":42.3782, "ninetiethPercentile":69.6232 }, "id":1081109, "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/1081109?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/1081109?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/1081109?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }