{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -119.8875, 37.10389 ] }, "properties":{ "provider":"SPK", "code":"Hensley lake", "slug":"hensley%20lake", "elevation":581.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"CA", "kind":"PROJECT", "nearest_city":"Raymond, CA", "public_name":"Hensley Lake / Hidden Dam", "location_code":3981915044, "nsid":null, "aliases":{ "NIDID":"CA10244" }, "timeseries":[ { "tsid":"Hensley lake.Flow-Res In.Ave.1Hour.1Hour.Calc-val", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Res In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.79, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"Hensley lake.Flow-Res Out.Ave.1Hour.1Hour.Calc-val", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Res Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T23:00:00Z", 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"tsid":"Hensley lake.Stor.Inst.0.Top of Conservation", "latest_value":null, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Hensley lake.Stor.Inst.0.Top of Dam", "latest_value":126173, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Hensley lake.Stor.Inst.0.Top of Flood", "latest_value":90000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of gross pool", "label":"Top of Gross Pool", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Hensley lake.Stor.Inst.0.Top of Gross Pool", "latest_value":90000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Hensley lake.Stor.Inst.0.Top of Inactive", "latest_value":5000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of surcharge", "label":"Top of Surcharge", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Hensley lake.Stor.Inst.0.Top of Surcharge", "latest_value":117500, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549852, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":140, "damLength":5730, "distance":16, "drainageArea":234, "eapId":1, "dsacAssignedDate":"2017-10-17T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2025-01-06T12:00:00.000Z", "eapLastRevDate":"2025-01-06T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"CA10244", "oldFederalId":"CA10244", "hazardId":4, "hydraulicHeight":163, "inspectionAuthorityId":0, "inspectionDate":"2024-12-04T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":37.1106616340001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-119.884579979, "maxDischarge":106000, "maxStorage":116727, "nidHeight":184, "nidStorage":116727, "normalStorage":64298, "numberOfLocks":0, "operationalStatusDate":"2017-10-17T12:00:00.000Z", "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":"Dams do not eliminate all risk of flooding. USACE works to address all types of flood risk associated with the dam. Dams have limited capacity to store water. Water may be released through the dam to manage water levels up or downstream or to relieve pressure on the dam to maintain its structural integrity. Severe weather events that bring inconsistent or larger amounts of water into the system can also lead to dam releases or in some cases overwhelm and lead to issues occurring at a dam. More detail related to this specific dam will be added at a future time.", "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":"FRESNO RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":575, "stateFedId":"CA10244", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":184, "submitDate":"2023-02-16T17:25:29.356Z", "surfaceArea":1570, "volume":0, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1975, "congDist":"Congressional District 05, California", "city":"MADERA", "county":"Madera", "aiannh":null, "websiteUrl":"https://www.spk.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/", "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":null, "otherNames":"Hensley Lake", "ownerNames":"USACE - Sacramento District", "ownerTypeIds":"3", "primaryDamTypeId":8, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;2;5;6", "dsacId":4, "femaRegion":"9", "lastEapExcerDate":"2024-11-21T12:00:00.000Z", "dataUpdated":"2025-03-14T12:00:00.000Z", "usaceDistrict":"Sacramento District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"180400", "doi_region":"CGB", "doi_region_name":"California-Great Basin", "doi_region_number":10 }, "id":3981915044, "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/3981915044?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/3981915044?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/3981915044?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }