{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -116.05361, 43.52793 ] }, "properties":{ "provider":"NWW", "code":"LUC", "slug":"luc", "elevation":3078.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"ID", "kind":"PROJECT", "nearest_city":"Boise", "public_name":"Lucky Peak Dam", "location_code":48176029, "nsid":null, "aliases":{ "NWS Handbook 5 ID":"LUCI1", "NIDID":"ID00288", "DCP Platform ID":"34413AB8", "USBR Station ID":"LUC" }, "timeseries":[ { "tsid":"LUC.Flow-In.Ave.~1Day.1Day.USBR-COMPUTED-REV", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-In", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T07:00:00Z", "latest_value":3323.48, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"LUC.Stor-Total.Inst.0.0.USBR-COMPUTED-REV", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor-Total", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T21:15:00Z", "latest_value":284539.0, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"LUC.Elev-Forebay.Inst.~1Day.0.USBR-COMPUTED-REV", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev-Forebay", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T08:00:00Z", "latest_value":3051.35, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"LUC.Flow-Out.Ave.~1Day.1Day.USBR-REV", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Out", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T07:00:00Z", "latest_value":2105.45, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"LUC.Stor-Total.Inst.0.0.USBR-COMPUTED-REV", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor-Total", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T21:15:00Z", "latest_value":284539.0, "delta24h":null, "sort_order":13, "results":null } ], "name":"Lucky 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"parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Bottom of Flood", "latest_value":293138, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Bottom of Normal", "latest_value":28767, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.max non-damaging", "label":"Max Non-Damaging", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Max Non-Damaging", "latest_value":293135, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.spillway crest", "label":"Spillway Crest", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Spillway Crest", "latest_value":307043, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.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":"LUC.Stor.Inst.0.Top of Dam", "latest_value":359310, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Top of Flood", "latest_value":341000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Top of Inactive", "latest_value":28567, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"LUC.Stor.Inst.0.Top of Normal", "latest_value":293138, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550306, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":2340, "distance":null, "drainageArea":2680, "eapId":1, "dsacAssignedDate":"2020-12-17T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-04-05T12:00:00.000Z", "eapLastRevDate":"2022-07-07T12:00:00.000Z", "enforcementAuthorityId":1, "federalId":"ID00288", "oldFederalId":"ID00288", "hazardId":4, "hydraulicHeight":237, "inspectionAuthorityId":1, "inspectionDate":"2024-10-22T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":1, "latitude":43.527969, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-116.0537, "maxDischarge":93300, "maxStorage":307043, "nidHeight":340, "nidStorage":307043, "normalStorage":293138, "numberOfLocks":0, "operationalStatusDate":"2020-12-17T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":1, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S Army Corps of Engineers (USACE) completed Lucky Peak Dam 11 miles upstream of the city of Boise in 1955 and continues to own and maintain the facility. The dam is built of compacted earth across the Boise River, is 250 feet tall and approximately 1,700 feet long (almost 1/3 mile). It includes a small compacted earth embankment (located at Barclay Bay) and a concrete auxiliary spillway.\n\nUSACE jointly operates Lucky Peak Dam, in coordination with the upstream Arrowrock and Anderson Ranch dams with the Bureau of Reclamation (Reclamation) and the Boise Project Board of Control for multiple purposes. In the spring, as the snowpack melts, USACE and Reclamation manage water storage and its slow release from Anderson Ranch, Arrowrock, and Lucky Peak to reduce downstream flood risks on the Boise River. Water releases must be balanced before the summer months in order to provide adequate reservoir levels and flows for water supply, irrigation, hydroelectric power generation, and recreation for Boise, Idaho and the Treasure Valley. \nWater is typically released through one of two gated outlet tunnels in the dam or through the powerhouse which is connected to the main outlet tunnel. The combined outlets can release more than four times the amount the water that keeps the Boise River in its banks as it flows through the city. The auxiliary spillway on the dam's left (east) side is designed to pass high volumes of waters when it is necessary to keep water from spilling over the dam (overtopping). This can severely impact the integrity of the structure. In the unlikely event that water exceeds storage levels, the spillway would pass this water over a concrete rim and down an earth and rock slope. This auxiliary spillway can release three times more water than outlet capacity - it has never been used.", "riskCharSummary":"While Lucky Peak Dam greatly reduces flood risks downstream, it does not eliminate these risks. Flooding can still occur even as Lucky Peak Dam is operated as intended. There are times, usually in the early spring, when USACE must release more water through the dam's outlets that exceeds the capacity of downstream river channels. This results in localized flooding throughout the valley in areas adjacent to the river. These releases are made in balance to make room in the reservoir to safely store additional water and minimize the potential for catastrophic flooding that can hinder safe evacuation, endanger lives and result in significant property damage. USACE communicates with local and state emergency managers when these conditions are anticipated. Emergency actions plans are activated in downstream communities and residents are instructed to heed all directives from emergency officials. \n\nWhile very rare, there is potential for storm events to cause more rainfall and/or snowmelt than Lucky Peak Dam can store safely. To manage this large amount of water, the full capacity of the outlets to release stored water may be needed, likely flooding downstream areas well above riverbanks. As a last resort, the dam's auxiliary spillway can pass extreme volumes of water to keep the dam from overtopping. Overtopping the dam could result in 10 or more feet of water above the riverbanks. This water is likely to damage and destroy houses, buildings, roads, bridges, and power and water supplies. While weather can be unpredictable, these rare events can often be forecast 1-2 days before flooding begins to impact communities and USACE will communicates to local and state emergency managers if this could happen. In the unlikely event Lucky Peak Dam must pass this extreme volume of water, downstream residents should follow all directions from emergency officials, including evacuation orders. Failure to do so puts you and your family's lives at risk.\n\nThe hazard potential for Lucky Peak is classified as \"HIGH\" due to the possibility of loss of life, property, lifelines, and environmental issues if the dam were to fail suddenly. In 2020, USACE assessed Lucky Peak Dam for any concerns that might cause the dam to break during rare events. While the dam is well built and has performed exceptionally during its 70 years, USACE is conducting a follow-on study to investigate potential issues when impounding water that could contribute excess release of the pool. The dam's ability to withstand earthquakes is also being investigated further. In addition, extreme flows have not passed over the dam's auxiliary spillway so there is some uncertainty in the resulting conditions of the spillway during a rare extreme flow event. The unlikely failure of the dam under one or a variety of circumstances could put tens of thousands of people in harm's way. \n\nFull or partial inundation of USACE recreational facilities may lead to closures of recreation sites and hazardous boating due to floating debris. Therefore, it is important to heed all directives to evacuate as communicated by USACE personnel and local law enforcement.", "riskManagementMeasures":"To ensure USACE and Reclamation can continue to operate Lucky Peak Dam to minimize flood risks while balancing all its project functions, the agencies use the latest forecast, rain, snowpack, and stream gauge information available and monitor river conditions to help optimize operations of this dam and the upstream dams. They coordinate closely with the National Weather Service, the U.S. Geologic Survey, and the Natural Resources Conservation Service's Snow Survey on conditions both upstream and downstream of the dam. USACE continues to work with these agencies and local and state emergency management officials to prepare for emergencies. This close coordination allows them to respond to events in a timely manner. \n\nUSACE maintains Lucky Peak Dam to ensure it continues to provide the benefits it has over the past 70 years. A routine risk assessment was completed in 2020 and a more thorough study is being planned to further investigate potential issues associated with dam and its auxiliary spillway. The dam is continuously monitored during high water events and following earthquakes by dam safety professionals, who are prepared to act if performance issues arise. USACE addresses operations and maintenance issues associated with dam safety risks as they arise.", "riverName":"BOISE RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":600, "stateFedId":"ID00288", "stateRegulatoryAgency":null, "stateRegulatedId":1, "structuralHeight":340, "submitDate":"2023-02-16T17:25:22.469Z", "surfaceArea":2820, "volume":5900000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1955, "congDist":"Congressional District 02, Idaho", "city":"BOISE", "county":"Ada", "aiannh":null, "websiteUrl":"https://www.nww.usace.army.mil/Locations/District-Locks-and-Dams/Lucky-Peak-Dam-and-Lake/", "coreTypeIds":"3", "damTypeIds":"5", "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":"Lucky Peak Lake", "ownerNames":"USACE - Walla Walla District", "ownerTypeIds":"3", "primaryDamTypeId":5, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;2;5;6", "dsacId":2, "femaRegion":"10", "lastEapExcerDate":"2024-05-14T12:00:00.000Z", "dataUpdated":"2025-04-21T12:00:00.000Z", "usaceDistrict":"Walla Walla District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"170501", "doi_region":"CPN", "doi_region_name":"Columbia-Pacific Northwest", "doi_region_number":9 }, "id":48176029, "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/48176029?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/48176029?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/48176029?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }