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of inactive", "label":"Bottom of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Bottom of Inactive", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.design capacity", "label":"Design Capacity", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Design Capacity", "latest_value":810625, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.maximum tailwater", "label":"Maximum Tailwater", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Maximum Tailwater", "latest_value":21419, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Spillway Crest", "latest_value":216093, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Streambed", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Top of Conservation", "latest_value":189773, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Top of Flood", "latest_value":708668, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"ACTT2.Stor.Inst.0.Top of Inactive", "latest_value":206, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550048, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":140, "damLength":17400, "distance":null, "drainageArea":1670, "eapId":1, "dsacAssignedDate":"2024-07-13T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-22T12:00:00.000Z", "eapLastRevDate":"2024-10-22T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"TX00016", "oldFederalId":"TX00016", "hazardId":4, "hydraulicHeight":135, "inspectionAuthorityId":0, "inspectionDate":"2023-07-10T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":31.591891307, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-97.211430432, "maxDischarge":683000, "maxStorage":969000, "nidHeight":145, "nidStorage":969000, "normalStorage":152500, "numberOfLocks":0, "operationalStatusDate":"2009-05-09T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) completed construction of Waco Dam in June 1965 in accordance with the Flood Control Act, approved on 3 September 1954 (Public Law 780, 83rd Congress, 2nd Session). It is located approximately 2 miles west of the City of Waco in McLennan County, Texas. The dam reduces the risk of downstream flooding along the Bosque River by holding back waters during heavy rain events. The dam is an earthen dam, approximately 3.3 miles long, with both a gated concrete spillway in the middle as well as a gated concrete conduit on the southern end. The gated spillway is controlled by fourteen tainter gates that hold water to 14 feet below the top of the dam to regulate water storage and releases. The gated concrete conduit, or pipe through the dam, is also for releasing water in a regulated manner during and after flood events. There are two low-flow conduits on either side of the concrete conduit for water supply releases. Additional benefits of the dam are recreation and fish and wildlife conservation.", "riskCharSummary":"Although Waco Dam reduces the risk of flooding to downstream communities, the dam does not eliminate the risk of flooding. Waco Dam is designed to reduce the peak flooding levels downstream without risking the structural integrity of the dam. The U.S. Army Corps of Engineers (USACE) completed a risk assessment in April 2024 and classified the risks associated with the project as moderate. This classification is based on an extremely unlikely flood event which could cause several equally unlikely scenarios including instability of the concrete gated spillway structure, instability of the non-overflow portion of the gated concrete spillway, or water to seep through the dam at the left abutment of the concrete gated spillway, through the main section of the dam, or through the southern end of the dam. In the remote event of a dam breach, the largest impacts would be to the city of Waco, TX, located approximately 7 miles downstream of the dam. In any of these unlikely scenarios, downstream flooding in Waco, TX would occur within five hours of breach and could be as deep as a three-story structure, destroying buildings and critical infrastructure. In addition, some evacuation routes would be under water, increasing evacuation distances. The most likely scenario that could result in downstream flooding is high volume releases from Waco Dam through the gated spillway during high water events. These surcharge operational releases occur when the reservoir's flood storage capacity is exceeded and the spillway gates are opened to allow excess water to flow through the spillway. Surcharge releases through the spillway during the largest expected flood in the watershed would put thousands of people at risk and flood waters could be as deep as a two-story building. Although the large downstream communities have well-practiced emergency action plans, and local emergency managers are aware of the unlikely potential for dam failure, breach of the dam would result in significant loss of life and severe economic damages.", "riskManagementMeasures":"USACE manages dam-related flood risks by continually monitoring the condition and health of the dam, prioritizing activities that will most impact the risks, and engaging upstream and downstream emergency managers and members of the public to raise awareness of the dam and support actions to prepare and be ready to respond in the case of a dam-related emergency. USACE works closely with local emergency managers to share what is known about the dam and support the development of local emergency and evacuation plans. USACE regularly updates the emergency action plan for the dam. Regular maintenance and repairs are performed as needed to keep the dam functioning properly. More detail related to this specific dam will be added at a future time.", "riverName":"BOSQUE RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":560, "stateFedId":"TX00016", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":145, "submitDate":"2024-01-19T00:00:00.000Z", "surfaceArea":7270, "volume":16209000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1965, "congDist":"Congressional District 17, Texas", "city":"WACO", "county":"McLennan", "aiannh":null, "websiteUrl":"https://www.swf-wc.usace.army.mil/waco/", "coreTypeIds":"3", "damTypeIds":"8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1;3", "nonFederalDamOnFederalId":0, "designerNames":"CESWF", "otherNames":null, "ownerNames":"USACE - Fort Worth District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;4;5;8", "dsacId":3, "femaRegion":"6", "lastEapExcerDate":"2025-06-10T12:00:00.000Z", "dataUpdated":"2025-06-16T12:00:00.000Z", "usaceDistrict":"Fort Worth District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"120602", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":210.4497, "tenthPercentile":179.9371, "ninetiethPercentile":247.2527 }, "id":142048, "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/142048?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/142048?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/142048?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }