{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -99.56056, 31.83278 ] }, "properties":{ "provider":"SWF", "code":"HORT2", "slug":"hort2", "elevation":0.0, "horizontal_datum":"", "vertical_datum":"NGVD29", "state":"TX", "kind":"PROJECT", "nearest_city":"Valera, TX", "public_name":"Hords Creek Lake", "location_code":199048, "nsid":null, "aliases":{ "NID Dam Name":"HORDS CREEK LAKE", "NIDID":"TX00006" }, "timeseries":[ { "tsid":"HORT2-Spillway.Flow-Out.Inst.1Hour.0.Rev-SWF-REGI", "label":"Surcharge Release", "base_parameter":"Flow", "parameter":"Flow-Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T21:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":8, "results":null }, { "tsid":"HORT2.Flow-Out.Inst.1Hour.0.Rev-SWF-REGI", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T21:00:00Z", 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"latest_value":1920, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"HORT2.Elev.Inst.0.Top of Inactive", "latest_value":1856, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of inactive", "label":"Bottom of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HORT2.Stor.Inst.0.Bottom of Inactive", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HORT2.Stor.Inst.0.Spillway Crest", "latest_value":24734, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HORT2.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":"HORT2.Stor.Inst.0.Top of Conservation", "latest_value":8112, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HORT2.Stor.Inst.0.Top of Flood", "latest_value":24734, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"HORT2.Stor.Inst.0.Top of Inactive", "latest_value":3, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550018, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":91, "damLength":6800, "distance":null, "drainageArea":48, "eapId":1, "dsacAssignedDate":"2019-05-30T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-09-10T12:00:00.000Z", "eapLastRevDate":"2019-12-18T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"TX00006", "oldFederalId":"TX00006", "hazardId":4, "hydraulicHeight":86, "inspectionAuthorityId":0, "inspectionDate":"2022-12-12T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":31.8345128140001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-99.5600737619999, "maxDischarge":60800, "maxStorage":49290, "nidHeight":91, "nidStorage":49290, "normalStorage":8640, "numberOfLocks":0, "operationalStatusDate":"2019-05-30T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers (USACE) completed construction of Hords Creek Dam in June 1948. Initial phase of construction is contained in the Flood Control Act, approved 18 August 1941 (Public Law 228, Seventy-seventh Congress, First Session) and completion of Hords Creek Reservoir was authorized by the Flood Control Act, approved 22 December 1944 (Public Law 534, Seventy-eighth Congress, Second Session). It is located approximately 9 miles west of the City of Coleman in Coleman County, Texas. The dam reduces the risk of downstream flooding along Hords Creek by holding back waters during heavy rain events. The dam is an earthen dam, approximately 1.19 miles long, with an un-gated spillway on the western end and a gated concrete conduit in the middle with an un-gated opening on the upstream side. The spillway on the western end holds water to 19-feet below the top of the dam; however, there are no gates to regulate water flows when the reservoir rises above that level. Any water above that level will flow downstream. The gated concrete conduit, or pipe through the dam, is used for releasing water in a regulated manner during and after flood events. The conduit is not used during periods of drought. The un-gated opening on the upstream side of the concrete conduit holds water to 39-feet below the top of the dam; however, there are no gates to regulate water flows when the reservoir rises above that level. Additional benefits of the dam are water supply, recreation, and fish and wildlife conservation.", "riskCharSummary":"Although Hords Creek Dam reduces the risk of flooding to downstream communities, the dam does not eliminate the risk of flooding. Hords Creek Dam was 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 July 2018 and classified the risk associated with the project as very low. This classification is based on an extremely unlikely flood event which could cause water to seep through the embankment along the concrete conduit or through fractures in the limestone at the right abutment of the concrete conduit. In the remote event of a dam breach, the largest impacts would be to the City of Coleman, Texas located approximately 14 miles below the dam. In any of these unlikely scenarios, downstream flooding in Coleman, Texas would occur within 2 hours of breach and could be as deep as a two-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 Hords Creek Dam through the un-gated spillway during high water events. These surcharge operational releases occur when the reservoir's flood storage capacity is exceeded and excess water flows through the spillway. Surcharge releases through the spillway during the largest expected flood in the watershed would put hundreds of people at risk and flood waters could be as deep as a one-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":"In order to lower the risks associated with the dam, inspections and monitoring are performed regularly to ensure the health and safety of the dam. Surveillance and inspections are increased as the lake elevation rises. Routine maintenance and dam safety monitoring are performed to ensure the dam is functioning as designed. The downstream embankment was repaired in 2019 after a slide caused damage to the embankment, slope protection, and crest road. Additionally, Hords Creek Dam is well maintained with an instrumentation and monitoring system to allow USACE staff to evaluate the dam for changing conditions. A new measuring weir was installed in 2019 to monitor the amount of water seeping through the dam. The Emergency Action Plan is updated and exercised annually, improving emergency response and coordination between USACE elements and downstream federal, state, county, city agencies, and stakeholders. USACE also communicates risks associated with Hords Creek Dam annually with stakeholders and Emergency Managers.", "riverName":"HORDS CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":500, "stateFedId":"TX00006", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":91, "submitDate":"2023-02-24T19:59:06.831Z", "surfaceArea":510, "volume":1364700, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1948, "congDist":"Congressional District 11, Texas", "city":"COLEMAN", "county":"Coleman", "aiannh":null, "websiteUrl":"https://www.swf-wc.usace.army.mil/hords/", "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":"Hords Creek Lake", "ownerNames":"USACE - Fort Worth District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":8, "purposeIds":"8;4;5;9", "dsacId":5, "femaRegion":"6", "lastEapExcerDate":"2025-05-20T12:00:00.000Z", "dataUpdated":"2025-06-17T12:00:00.000Z", "usaceDistrict":"Fort Worth District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"120901", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":5.9411, "tenthPercentile":2.9997, "ninetiethPercentile":8.7821 }, "id":199048, "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/199048?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/199048?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/199048?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }