{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -117.68139, 34.1575 ] }, "properties":{ "provider":"SPL", "code":"San Antonio", "slug":"san%20antonio", "elevation":2125.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"CA", "kind":"PROJECT", "nearest_city":"Claremont", "public_name":"San Antonio Dam", "location_code":839145, "nsid":null, "aliases":{ "NIDID":"CA10023" }, "timeseries":[ { "tsid":"San Antonio.Precip.Inst.~15Minutes.0.GOES-rev", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T22:00:00Z", "latest_value":21.38, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"San Antonio.Stor.Inst.0.0.Rescal", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T13:30:00Z", "latest_value":0.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"San Antonio US.Flow.Ave.0.0.Rescal", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T13:30:00Z", "latest_value":9.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"San Antonio.Flow.Inst.0.0.Rescal", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T13:30:00Z", "latest_value":4.0, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"San Antonio.Elev.Inst.0.0.Rescal", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T13:30:00Z", "latest_value":2125.6, "delta24h":null, "sort_order":1, "results":null } ], "name":"San Antonio Dam", "hasResopsAverages":"false", "nidId":"CA10023", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"San Antonio.Elev.Inst.0.Bottom of Flood", "latest_value":2164, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"San Antonio.Elev.Inst.0.Streambed", "latest_value":2125, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"San Antonio.Elev.Inst.0.Top of Dam", "latest_value":2260, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of debris pool", "label":"Top of Debris Pool", "parameter":"Elev", "base_parameter":"Elev", "tsid":"San Antonio.Elev.Inst.0.Top of Debris Pool", "latest_value":2164, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"San Antonio.Elev.Inst.0.Top of Flood", "latest_value":2238, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"San Antonio.Stor.Inst.0.Bottom of Flood", "latest_value":1607, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"San Antonio.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":"San Antonio.Stor.Inst.0.Top of Dam", "latest_value":13430, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of debris pool", "label":"Top of Debris Pool", "parameter":"Stor", "base_parameter":"Stor", "tsid":"San Antonio.Stor.Inst.0.Top of Debris Pool", "latest_value":1607, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"San Antonio.Stor.Inst.0.Top of Flood", "latest_value":9883, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549756, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":160, "damLength":3850, "distance":null, "drainageArea":27, "eapId":1, "dsacAssignedDate":"2022-05-23T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-04-22T12:00:00.000Z", "eapLastRevDate":"2020-05-28T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"CA10023", "oldFederalId":"CA10023", "hazardId":4, "hydraulicHeight":130, "inspectionAuthorityId":0, "inspectionDate":"2021-03-15T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":34.1573003450001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-117.67707075, "maxDischarge":53700, "maxStorage":11880, "nidHeight":160, "nidStorage":11880, "normalStorage":0, "numberOfLocks":0, "operationalStatusDate":"2022-05-23T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) operates and maintains more than 700 dams across the United States. A dam is an earthen embankment and/or solid concrete structure that is built across a river, stream, or other waterway to temporarily hold back and store water that would otherwise flow downstream. More detail related to this specific dam will be added at a future time.", "riskCharSummary":"A risk assessment of the Fullerton Dam was completed by USACE in 2021. The risk identified during this study determined the dam to be a very low risk due to the combination of life, economic, or environmental consequences with likelihood of failure to be unacceptable in unusual circumstances. The main factors driving risk of Fullerton dam are erosion of the main embankment along the outlet conduit and the potential for overtopping of the main embankment. The primary consequence center is Fullerton, CA with the population at risk of greater than 50,000. Economic Consequences are estimated to be more than $1 Billion.", "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":"SAN ANTONIO CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":200, "stateFedId":"CA10023", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":null, "submitDate":"2023-02-16T17:25:33.004Z", "surfaceArea":1, "volume":0, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1956, "congDist":"Congressional District 28, California", "city":"CLAREMONT", "county":"San Bernardino", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":null, "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":"CESPL", "otherNames":"San Antonio Reservoir", "ownerNames":"USACE - Los Angeles District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9", "dsacId":4, "femaRegion":"9", "lastEapExcerDate":"2020-08-13T12:00:00.000Z", "dataUpdated":"2025-04-23T12:00:00.000Z", "usaceDistrict":"Los Angeles District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"180702", "doi_region":"LCB", "doi_region_name":"Lower Colorado Basin", "doi_region_number":8 }, "id":839145, "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/839145?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/839145?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/839145?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }