{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -117.96861, 34.11333 ] }, "properties":{ "provider":"SPL", "code":"Santa Fe", "slug":"santa%20fe", "elevation":421.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"CA", "kind":"PROJECT", "nearest_city":"Vincent", "public_name":"Santa Fe Dam", "location_code":878145, "nsid":null, "aliases":{ "NIDID":"CA10024" }, "timeseries":[ { "tsid":"Santa Fe.Stor.Inst.0.0.Rescal", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T14:30:00Z", "latest_value":10.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"Santa Fe.Flow.Inst.0.0.Rescal", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T14:30:00Z", "latest_value":465.0, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Santa Fe US.Flow.Ave.0.0.Rescal", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T14:30:00Z", "latest_value":238.0, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"Santa Fe.Elev.Inst.0.0.Rescal", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T14:30:00Z", "latest_value":426.55, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"Santa Fe.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":14.27, "delta24h":null, "sort_order":16, "results":null } ], "name":"Santa Fe Dam", "hasResopsAverages":"false", "nidId":"CA10024", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Santa Fe.Elev.Inst.0.Bottom of Flood", "latest_value":456, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Santa Fe.Elev.Inst.0.Streambed", "latest_value":421, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Santa Fe.Elev.Inst.0.Top of Dam", "latest_value":513, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of debris pool", "label":"Top of Debris Pool", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Santa Fe.Elev.Inst.0.Top of Debris Pool", "latest_value":456, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Santa Fe.Elev.Inst.0.Top of Flood", "latest_value":496, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Santa Fe.Stor.Inst.0.Bottom of Flood", "latest_value":2679, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Santa Fe.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":"Santa Fe.Stor.Inst.0.Top of Dam", "latest_value":50098, "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":"Santa Fe.Stor.Inst.0.Top of Debris Pool", "latest_value":2679, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Santa Fe.Stor.Inst.0.Top of Flood", "latest_value":29651, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549749, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":92, "damLength":23800, "distance":null, "drainageArea":236, "eapId":1, "dsacAssignedDate":"2016-05-05T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-04-22T12:00:00.000Z", "eapLastRevDate":"2019-10-31T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"CA10024", "oldFederalId":"CA10024", "hazardId":4, "hydraulicHeight":87, "inspectionAuthorityId":0, "inspectionDate":"2024-06-10T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":34.1133310000001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-117.9682999999999, "maxDischarge":200100, "maxStorage":45409, "nidHeight":92, "nidStorage":45409, "normalStorage":0, "numberOfLocks":0, "operationalStatusDate":"2016-05-05T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"Santa Fe Dam is located on the San Gabriel River in the City of Irwindale, Los Angeles County, California. The dam was authorized to provide flood risk management for the densely populated area between the dam site and the downstream Whittier Narrows Reservoir. The project was constructed by the U.S. Army Corps of Engineers (USACE) and was completed in January 1949. Santa Fe Dam is situated along the San Gabriel River approximately one and a half miles downstream of the Foothill Blvd Bridge and four miles southwest of the San Gabriel Canyon. The project consists of an earthen embankment, intake tower and gated outlet works, and an uncontrolled spillway. The top of dam length is 23,800 feet, and the dam has a height of 92 feet above streambed. Water is moved through the structure via two means: 1) an intake structure with outlet works consisting of 16 separate gated conduits 2) an uncontrolled spillway structure located on the right side of the embankment. The Santa Fe Dam and Reservoir is dry unless a significant rainfall event occurs, normally between the months of November and April.", "riskCharSummary":"A risk assessment of the Santa Fe Dam was completed by USACE in 2016. The risks identified during this study determined the dam to be a moderate risk due to the combination of life, economic, or environmental consequences with likelihood of failure to be unacceptable except in unusual circumstances. The project risk is driven by the high population at risk immediately downstream o the dam as well as identified potential failure modes. The primary risk drivers for Santa Fe Dam are internal erosion of the earthen embankment adjacent to the outlet conduit and impacts on the structure due to an earthquake event. The primary consequence centers are the cities of Irwindale, Baldwin Park, El Monte, and South El Monte which are located downstream and between the Santa Fe Dam and Whittier Narrows Dam. These areas are heavily developed and will be significantly impacted as a result of flooding scenarios. The population at risk is over 100,000 and economic consequences would be significant.", "riskManagementMeasures":"To ensure USACE is taking all steps to reduce the risk to the public, USACE will continue to work closely with state and local emergency managers, conducting emergency exercises and incorporating any new information into our Emergency Action Plan. USACE closely follows rainfall forecasts to determine when high water events may occur to provide information for any necessary flood warnings. USACE is working with local communities to provide opportunities to engage with residents and schools to help them understand how they can better prepare for a flood. All dam safety staff are regularly trained to monitor and evaluate the condition of the dam based on key risk components. USACE regularly inspects and monitors instruments to check the health of the dam and increase this monitoring during lake level rises. This ensures that the structure is performing as designed and could help detect any areas of potential concern. Regular maintenance and repairs are performed as needed to keep the dam functioning properly. Future risk communication activities include updates to the Emergency Action Plan and coordinating these plans first responders and development of a formal Risk Communication Plan.", "riverName":"SAN GABRIEL RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":1200, "stateFedId":"CA10024", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":null, "submitDate":"2023-02-16T17:25:33.701Z", "surfaceArea":1, "volume":0, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1949, "congDist":"Congressional District 31, California", "city":"EL MONTE", "county":"Los Angeles", "aiannh":null, "websiteUrl":"https://www.spl.usace.army.mil/Missions/Asset-Management/Santa-Fe-Dam/", "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":"Santa Fe Reservoir", "ownerNames":"USACE - Los Angeles District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5;8", "dsacId":3, "femaRegion":"9", "lastEapExcerDate":"2023-06-14T12:00:00.000Z", "dataUpdated":"2025-07-15T12:00:00.000Z", "usaceDistrict":"Los Angeles District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"180701", "doi_region":"LCB", "doi_region_name":"Lower Colorado Basin", "doi_region_number":8 }, "id":878145, "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/878145?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/878145?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/878145?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }