{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -95.54389, 33.85278 ] }, "properties":{ "provider":"SWT", "code":"PATM", "slug":"patm", "elevation":392.5, "horizontal_datum":"NAD83", "vertical_datum":"NGVD29", "state":"TX", "kind":"PROJECT", "nearest_city":"Arthur City, TX", "public_name":"Pat Mayse Lake", "location_code":1812051, "nsid":null, "aliases":{ "NIDID":"TX04359", "CWMS Standard Naming":"PATM", "CWMS Legacy Naming":"PATM", "NWS Handbook 5 ID":"MYST2", "USGS Station Number":"07335390", "DCP Platform ID":"CE6167FC" }, "timeseries":[ { "tsid":"PATM.Flow-Res Out.Inst.1Hour.0.Rev-Regi-Flowgroup", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Res Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"PATM.Flow-Res In.Ave.~8Hours.8Hours.Rev-Ccp", "label":"Inflow", "base_parameter":"Flow", 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"slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"PATM.Elev.Inst.0.Top of Normal", "latest_value":451, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.24-hr surveillance begins", "label":"24-hr Surveillance Begins", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.24-hr Surveillance Begins", "latest_value":177080, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Bottom of Flood Control", "latest_value":117840, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Bottom of Normal", "latest_value":4160, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Conservation", "latest_value":112397, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of constant conservation", "label":"Top of Constant Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Constant Conservation", "latest_value":117840, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Dam", "latest_value":325261, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Flood", "latest_value":175437, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Inactive", "latest_value":2920, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"PATM.Stor.Inst.0.Top of Normal", "latest_value":117840, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550040, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":96, "damLength":7080, "distance":null, "drainageArea":175, "eapId":1, "dsacAssignedDate":"2018-05-14T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-02-18T12:00:00.000Z", "eapLastRevDate":"2025-02-18T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"TX04359", "oldFederalId":"TX04359", "hazardId":4, "hydraulicHeight":92, "inspectionAuthorityId":0, "inspectionDate":"2022-01-12T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":33.853329, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-95.548332, "maxDischarge":4450, "maxStorage":457800, "nidHeight":96, "nidStorage":457800, "normalStorage":189100, "numberOfLocks":0, "operationalStatusDate":"2018-05-14T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The United States Army Corps of Engineers completed construction of Pat Mayse Dam in 1967 with the primary purpose to reduce flooding in downstream communities. Pat Mayse Dam is located on Sanders Creek, a tributary of the Red River, about 10 miles north of Paris, TX. During large storm events, the dam holds back excess water to reduce flooding downstream. Water storage and releases are managed by the ungated outlet works running through the earthen embankment. The project also includes an ungated spillway. In addition to reducing flooding, the water held back by the dam forms a reservoir providing recreation benefits. Pat Mayse Dam is also used for water supply purposes and fish and wildlife conservation.", "riskCharSummary":"USACE completed a risk assessment in March 2017 and classified the risk associated with Pat Mayse Dam as low. The risk is primarily driven by the potential for water to flow over the ungated spillway causing erosion that eventually weakens the spillway. Other issues identified include the remote potential for water to seep along the conduit resulting in embankment erosion that weakens the dam, or the potential for a flood so large that the capacity of the dam to store water is exceeded and water flows over the top of the dam resulting in breach. Failure of the dam would include flooding downstream resulting in loss of life and economic impacts. In the remote event of a dam failure the largest impacts would be to Arthur City, TX.\nThere is also a flood risk associated with normal operation of the dam. During large floods the capacity of the reservoir to store water could be exceeded resulting in unregulated flow through the ungated outlet works and over the auxiliary spillway and downstream flooding.", "riskManagementMeasures":"There are numerous activities that USACE conducts on a day to day basis to help manage risk. This includes conducting emergency exercises with local and state emergency responders to enhance evacuation planning, routine updates to the Emergency Action Plan to improve emergency response actions, and development of a detailed communication plan for the dam. Additionally, the dam is well maintained through continuous operations and maintenance activities and USACE conducts detailed inspections of the dam during both normal lake levels and during flood events to ensure the integrity of the structure. Lastly, the dam has a robust instrumentation and monitoring system to allow USACE staff to evaluate the dam for changing conditions .", "riverName":"SANDERS CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":100, "stateFedId":"TX04359", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":96, "submitDate":"2023-02-16T17:25:29.432Z", "surfaceArea":5993, "volume":5580000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1967, "congDist":"Congressional District 04, Texas", "city":"CHICOTA", "county":"Lamar", "aiannh":null, "websiteUrl":"https://www.swt.usace.army.mil/Locations/Tulsa-District-Lakes/Texas/Pat-Mayse-Lake/", "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":"CESWT", "otherNames":"Pat Mayse Lake", "ownerNames":"USACE - Tulsa District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5;8", "dsacId":4, "femaRegion":"6", "lastEapExcerDate":"2025-02-18T12:00:00.000Z", "dataUpdated":"2025-07-15T12:00:00.000Z", "usaceDistrict":"Tulsa District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"111401", "doi_region":"ART", "doi_region_name":"Arkansas-Rio Grande-Texas Gulf", "doi_region_number":6, "thirtyYearAverage":150.2062, "tenthPercentile":123.405, "ninetiethPercentile":167.1257 }, "id":1812051, "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/1812051?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/1812051?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/1812051?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }