{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -104.55193, 37.14113 ] }, "properties":{ "provider":"SPA", "code":"Trinidad", "slug":"trinidad", "elevation":6073.64, "horizontal_datum":"NAD83", "vertical_datum":"NGVD29", "state":"CO", "kind":"PROJECT", "nearest_city":"Sopris (historical), CO", "public_name":"Trinidad Lake", "location_code":265043, "nsid":null, "aliases":{ "NID Dam Name":"TRINIDAD", "CWMS Standard Naming":"Trinidad", "CWMS Legacy Naming":"Trinidad", "USGS Station Number":"07124400", "NWS Handbook 5 ID":"TDDC2", "DCP Platform ID":"CE1B7074", "NIDID":"CO00050" }, "timeseries":[ { "tsid":"Trinidad.Elev.Inst.15Minutes.0.DCP-rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:30:00Z", "latest_value":6182.11, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"Trinidad.Stor.Inst.15Minutes.0.DCP-rev", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:30:00Z", "latest_value":19686.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"Trinidad.Precip.Total.~1Day.1Day.MRS", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-13T14:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"Trinidad-Trinidad DS.Flow.Inst.~1Hour.0.MRS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T13:00:00Z", "latest_value":28.62, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Trinidad.Stor.Inst.15Minutes.0.DCP-rev", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T22:30:00Z", "latest_value":19686.0, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"Trinidad.Flow-Res In.Ave.~1Day.1Day.MRS", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Res In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T06:00:00Z", "latest_value":11.64, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"Trinidad-Trinidad DS.Stage.Inst.~1Hour.0.MRS", "label":"Stage Tailwater", "base_parameter":"Stage", "parameter":"Stage", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T13:00:00Z", "latest_value":4.75, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"Trinidad.Temp-Air.Inst.~1Day.0.MRS", "label":"Air Temperature", "base_parameter":"Temp", "parameter":"Temp-Air", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-04-13T14:00:00Z", "latest_value":51.0, "delta24h":null, "sort_order":22, "results":null } ], "name":"Trinidad Lake", "hasResopsAverages":"true", "nidId":"CO00050", "nidid":"", "levels":[ { "slug":"elev.bottom of normal", "label":"Bottom of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Trinidad.Elev.Inst.0.Bottom of Normal", "latest_value":6115, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Trinidad.Elev.Inst.0.Streambed", "latest_value":6081, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Trinidad.Elev.Inst.0.Top of Dam", "latest_value":6281, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Trinidad.Elev.Inst.0.Top of Flood", "latest_value":6260, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Trinidad.Elev.Inst.0.Top of Normal", "latest_value":6230, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Trinidad.Stor.Inst.0.Bottom of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Trinidad.Stor.Inst.0.Streambed", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Trinidad.Stor.Inst.0.Top of Dam", "latest_value":169699, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Trinidad.Stor.Inst.0.Top of Flood", "latest_value":120446, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Trinidad.Stor.Inst.0.Top of Normal", "latest_value":68482, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549856, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":203, "damLength":6610, "distance":4, "drainageArea":671, "eapId":1, "dsacAssignedDate":"2018-09-05T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-12T12:00:00.000Z", "eapLastRevDate":"2024-07-12T12:00:00.000Z", "enforcementAuthorityId":1, "federalId":"CO00050", "oldFederalId":"CO00050", "hazardId":4, "hydraulicHeight":195, "inspectionAuthorityId":1, "inspectionDate":"2022-03-31T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":1, "latitude":37.1428550840001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-104.551613735, "maxDischarge":458300, "maxStorage":164930, "nidHeight":203, "nidStorage":164930, "normalStorage":71779, "numberOfLocks":0, "operationalStatusDate":"2018-09-05T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":1, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The Trinidad Dam project is owned and operated by the Albuquerque District, U.S. Army Corps of Engineers (USACE). The project includes a dam located on the Purgatoire River in Las Animas County, Colorado, approximately two river miles upstream of the city of Trinidad and roughly 140 river miles from its confluence with the Arkansas River at the city of Las Animas. Construction was completed in 1977 and primary project features include a zoned earthen embankment dam; gated outlet works to adjust operational water releases into the Purgatoire River; and two spillways to pass much larger, uncontrolled flows during extreme events. During flood events, the Trinidad dam project can be operated for flood risk reduction on its own or in conjunction with other dams to optimize upstream and downstream flood risks within the Arkansas River basin. In addition to the project\u2019s main purpose to provide flood risk reduction, it is also authorized for sediment retention, irrigation, and recreation benefits.", "riskCharSummary":"Although the Trinidad Dam project has successfully reduced flooding, it does not eliminate all flood risk caused by rainfall downstream of the dam or due to emergency operation of the project. During infrequent emergency operation, larger required releases through the project\u2019s gated outlet works could surpass downstream river channel capacity and flood low-lying areas along the Purgatoire and Arkansas Rivers. Although the progression of events leading to much larger, uncontrolled flow through the spillways has never occurred, uncontrolled spillway flows could greatly surpass downstream channel capacity, flood low-lying areas along the Purgatoire and Arkansas Rivers, and be life-threatening. Flood inundation caused by uncontrolled spillway flow could cause catastrophic downstream damages to residences and infrastructure (including levees) along the Purgatoire and Arkansas Rivers to John Martin Reservoir. Impacted communities include Trinidad, El Moro, Hoehne, Las Animas, and communities located in between.\n\nUSACE completed a risk assessment of the Trinidad Dam project in 2018. Results characterize dam breach risk as LOW due to the combination of life loss consequences and low likelihood of dam breach occurring either during normal operations or as the result of an extreme event. Specifically, the occurrence of dam breach caused by overtopping the dam was identified as the consequence of an extreme storm event (less than 1 in 200,000 year or 0.0005% per year). The annual probability of dam breach due to overtopping caused by an extreme storm event is estimated to be low (1 in 2,000,000). However, if a dam breach were to occur, flood inundation would be life-threatening and cause catastrophic downstream damages to residences and infrastructure (including levees) along the Purgatoire and Arkansas Rivers to John Martin Reservoir. Impacted communities include Trinidad, El Moro, Hoehne, Las Animas, and communities located in between.", "riskManagementMeasures":"USACE strives to manage risk through application of several measures including inspections and instrument evaluations, assessments and studies, maintenance activities, and risk communication. Routine inspections and instrument evaluation are performed to monitor performance of the project. Special inspections or increased inspection frequency occurs during high pools, spillway flows, or in response to earthquakes or signs of distress. Comprehensive inspections occur annually, with more detailed inspections taking place every 5 years. Assessments occur every 10 years to compare original design and construction methods to modern standards. Maintenance is routinely performed at the project and recent activities included installation of new instruments to improve performance monitoring, maintenance of riverbank erosion, routine vegetation removal, and gate component rehabilitation with gate repainting scheduled. Risk communication activities include tabletop emergency exercises with first responders and other Federal, State, and local agencies. Future risk communication activities include revisions to the Emergency Action Plan (EAP) and development of a formal risk communication plan. Flood warnings to notify affected communities downstream of the project are coordinated with external entities.", "riverName":"PURGATOIRE RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":1710, "stateFedId":"CO00050", "stateRegulatoryAgency":"DWR", "stateRegulatedId":1, "structuralHeight":200, "submitDate":"2023-02-16T17:25:31.063Z", "surfaceArea":1442, "volume":8579000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1976, "congDist":"Congressional District 03, Colorado", "city":"TRINIDAD", "county":"Las Animas", "aiannh":null, "websiteUrl":"https://www.spa.usace.army.mil/Missions/Civil-Works/Recreation/Trinidad-Lake/", "coreTypeIds":"3", "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":"CESPA", "otherNames":"Trinidad Lake", "ownerNames":"USACE - Albuquerque District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;2;5", "dsacId":4, "femaRegion":"8", "lastEapExcerDate":"2023-03-13T12:00:00.000Z", "dataUpdated":"2024-11-08T12:00:00.000Z", "usaceDistrict":"Albuquerque District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"110200", "doi_region":"UCB", "doi_region_name":"Upper Colorado Basin", "doi_region_number":7, "thirtyYearAverage":31.1847, "tenthPercentile":20.1053, "ninetiethPercentile":39.7057 }, "id":265043, "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/265043?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/265043?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/265043?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }