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"associatedStructuresCount":3, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":68, "damLength":6570, "distance":1, "drainageArea":2717, "eapId":1, "dsacAssignedDate":"2020-07-22T12:00:00.000Z", "eapMeetsGuidelinesId":0, "emergencyContactsUpdated":"2025-02-12T12:00:00.000Z", "eapLastRevDate":"2024-05-28T12:00:00.000Z", "enforcementAuthorityId":1, "federalId":"IL00113", "oldFederalId":"IL00113", "hazardId":4, "hydraulicHeight":63, "inspectionAuthorityId":1, "inspectionDate":"2021-08-12T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":1, "latitude":38.6188250000001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-89.352293, "maxDischarge":160000, "maxStorage":1286900, "nidHeight":68, "nidStorage":1286900, "normalStorage":233000, "numberOfLocks":0, "operationalStatusDate":"2020-07-22T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":1, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) built Carlyle Dam in 1966. The dam is located near Carlyle, Illinois, approximately 107 miles above the mouth of the Kaskaskia River. Carlyle Dam reduces the risk of flooding to Clinton, Fayette, Bond, and Marion Counties in Illinois by holding back water during major flood events. In addition to reducing flooding downstream, the water held back by the dam forms a reservoir called Carlyle Lake, which is the largest man-made lake in Illinois. Although flood risk management is the project's primary focus, the dam also provides water supply to nearby communities, recreation, and fish and wildlife conservation. It also releases water to support navigation flows downstream on the Kaskaskia River. The dam structure is primarily an earthen embankment with a gated concrete spillway in the middle, which is used to release water downstream to the Kaskaskia River. In addition to the dam, other structures related to the flood risk management project include the Keyesport Levee (which reduces flood risk to Keyesport, Illinois), Saddle Dam 2, and Saddle Dam 3 (which reduces flood risk to Huey, Illinois).", "riskCharSummary":"USACE completed a risk assessment for Carlyle Dam in 2020 that characterizes the risk of the project as Very Low, which is USACE's lowest risk category. The dam significantly reduces the risk of flooding to surrounding communities. However, it does not entirely eliminate the risk. Although the Carlyle Dam has historically performed well, extreme rainfall and earthquake events may cause areas downstream to be flooded. Even when the dam operates as intended, downstream flooding could still occur if a very large rainfall event were to require unusually large quantities of water to be released through the dam gates. In extreme cases, this flooding could be similar to what was experienced prior to the dam's construction. A less likely scenario would be if one of the gates were to have a problem during operation. In this case, more water than intended could be released, but that additional discharge would be limited to the amount that could pass through one gate. The most devastating potential scenario, but significantly less likely to happen, would occur if the dam were subjected to a large earthquake while the lake level was already high. In this unlikely event, an uncontrolled surge of water could flow out of the reservoir, resulting in potentially deadly flooding of Carlyle, IL, and other downstream communities. Although these scenarios are considered extremely unlikely, Carlyle Dam has an emergency action plan to lower the risk of life loss if any of these scenarios occurred.", "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. In addition, USACE holds annual Water Control and Dam Safety Information public meetings to discuss the risks with the public. USACE regularly inspects and monitors instruments to check the health of the dam. The frequency of these checks increases when the lake level rises. This ensures that the structure is performing as designed and could help detect any areas of potential concern. Regular maintenance and repairs are performed as needed to keep the dam functioning properly.", "riverName":"KASKASKIA RIVER", "separateStructuresCount":3, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":152, "stateFedId":"IL00113", "stateRegulatoryAgency":null, "stateRegulatedId":1, "structuralHeight":68, "submitDate":"2023-08-04T10:44:39.408Z", "surfaceArea":24580, "volume":2500000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1966, "congDist":"Congressional District 12, Illinois", "city":"CARLYLE", "county":"Clinton", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":"3", "damTypeIds":"11;8;9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CEMVS", "otherNames":"Carlyle Lake", "ownerNames":"USACE - St. Louis District", "ownerTypeIds":"3", "primaryDamTypeId":11, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;3;4;5;8", "dsacId":5, "femaRegion":"5", "lastEapExcerDate":"2024-09-17T12:00:00.000Z", "dataUpdated":"2025-02-13T12:00:00.000Z", "usaceDistrict":"St. Louis District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"071402", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3 }, "id":590018, "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/590018?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/590018?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/590018?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }