{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -82.9668, 40.18572 ] }, "properties":{ "provider":"LRH", "code":"AlumCr", "slug":"alumcr", "elevation":800.0, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"OH", "kind":"PROJECT", "nearest_city":"Lewis Center", "public_name":"Alum Creek Lake", "location_code":865108, "nsid":null, "aliases":{ "NIDID":"OH00931", "Local Loc ID":"ACS" }, "timeseries":[ { "tsid":"AlumCr-Outflow.Precip.Total.15Minutes.15Minutes.OBS", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T22:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"AlumCr-Outflow.Flow.Inst.15Minutes.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":12.28, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"AlumCr-Lake.Elev.Inst.15Minutes.0.OBS", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T21:45:00Z", "latest_value":888.32, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"AlumCr-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T21:45:00Z", "latest_value":82833.52, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"AlumCr-Lake.Flow.Inst.15Minutes.0.OBS", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T21:45:00Z", "latest_value":436.38, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"AlumCr-Lake.Stor.Inst.15Minutes.0.OBS", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T21:45:00Z", "latest_value":82833.52, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"AlumCr-Outflow.Stage.Inst.15Minutes.0.OBS", "label":"Stage Tailwater", "base_parameter":"Stage", "parameter":"Stage", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":1.38, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"AlumCr-Outflow.Temp-Water.Inst.1Hour.0.OBS", "label":"Water Temperature", "base_parameter":"Temp", "parameter":"Temp-Water", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-04-14T22:00:00Z", "latest_value":60.1, "delta24h":null, "sort_order":17, "results":null } ], "name":"Alum Creek Lake", "hasResopsAverages":"false", "nidId":"OH00931", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"AlumCr.Elev.Inst.0.Bottom of Flood", "latest_value":888, 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Inactive", "latest_value":835, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"AlumCr.Elev.Inst.0.Top of Normal", "latest_value":887.85, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of record", "label":"Top of Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"AlumCr.Elev.Inst.0.Top of Record", "latest_value":898.94, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of recreation", "label":"Top of Recreation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"AlumCr.Elev.Inst.0.Top of Recreation", "latest_value":888, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of water supply", "label":"Top of Water Supply", "parameter":"Elev", "base_parameter":"Elev", "tsid":"AlumCr.Elev.Inst.0.Top of Water Supply", "latest_value":888, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Bottom of Flood", "latest_value":79632.28, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Dam", "latest_value":203114, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Flood", "latest_value":134815, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Inactive", "latest_value":1897, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Normal", "latest_value":81584.41, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of recreation", "label":"Top of Recreation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Recreation", "latest_value":81735, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of water supply", "label":"Top of Water Supply", "parameter":"Stor", "base_parameter":"Stor", "tsid":"AlumCr.Stor.Inst.0.Top of Water Supply", "latest_value":72000, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550075, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":10200, "distance":3, "drainageArea":123, "eapId":1, "dsacAssignedDate":"2024-02-22T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-07-25T12:00:00.000Z", "eapLastRevDate":"2011-06-14T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"OH00931", "oldFederalId":"OH00931", "hazardId":4, "hydraulicHeight":81, "inspectionAuthorityId":0, "inspectionDate":"2021-05-13T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.1872444570001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-82.963350789, "maxDischarge":61500, "maxStorage":134800, "nidHeight":93, "nidStorage":134800, "normalStorage":81700, "numberOfLocks":0, "operationalStatusDate":"2018-05-16T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"Alum Creek Dam is in Delaware County, Ohio, north of Columbus between I-71 and US 23. Alum Creek flows south joining Big Walnut Creek, near Groveport in southeast Columbus, which joins the Scioto River. Alum Creek was built by the U.S. Army Corps of Engineers to reduce the flood hazard along Alum and Big Walnut Creeks, the Scioto River, and along the Ohio River. The City of Columbus shared part of the additional project cost for water supply for the metropolitan area. Other benefits of the project are recreation, fish and wildlife management, and downstream water quality. Most of the park is leased to the Ohio Department of Natural Resources to operate as a State Park. The U.S. Army Corps of Engineers manages and operates the Visitor Center and the Below Dam Recreation Area, as well as the dam. The dam consists of an earthen embankment with a central gated concrete spillway in the middle, which is used to release water downstream to Alum Creek. Cumulative flood damages prevented are about $129 million over the project life and average about $4.0 million annually.", "riskCharSummary":"U.S. Army Corps of Engineers completed a risk assessment for Alum Creek Dam in 2024 that characterizes the risk of the project as Very Low, which is U.S. Army Corps of Engineer\u2019s lowest risk category. The dam significantly reduces the risk of flooding to surrounding communities. However, it does not entirely eliminate the risk. Although the Alum Creek Dam has historically performed well, extreme rainfall events may cause areas downstream to be flooded. Even when the dam operates as intended, downstream flooding could still occur if a very large rainfall event were to require unusually large quantities of water to be released through the dam gates. In extreme cases, this flooding could be similar to what was experienced prior to the dam's construction. \n\nA less likely scenario would be if an extreme flood event were to overtop and erode the earthen embankment portion of the dam. In this case, if the dam were overtopped for a long enough period of time, it could eventually breach and cause much more water than intended to be released. Another potential scenario would be if the concrete spillway section were to slide in the downstream direction during a flood. In this unlikely event, an uncontrolled surge of water could flow out of the reservoir, resulting in potentially deadly flooding of Columbus, OH, and other downstream communities. Although these scenarios are considered extremely unlikely, Alum Creek Dam has an emergency action plan to lower the risk of life loss if any of these scenarios occurred.", "riskManagementMeasures":"There are numerous activities that U.S. Army Corps of Engineers conducts on a day-to-day basis to help manage risk at Alum Creek Dam. The dam is well maintained through continuous operations and maintenance activities, and U.S. Army Corps of Engineers conducts detailed inspections of the dam during both normal lake levels and during flood events. Supplementing these inspections, the dam has a specialized instrumentation and monitoring system to allow U.S. Army Corps of Engineers staff to continually evaluate the dam for changing conditions. Risk management and emergency response actions are being supported by conducting emergency exercises and dam safety training with U.S. Army Corps of Engineers staff and local and state emergency responders. Additionally, the dam\u2019s Emergency Action Plan is routinely updated to improve emergency response actions, and flood fighting materials are stored onsite in case of an emergency.", "riverName":"ALUM CREEK OF BIG WALNUT CRK.", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":102, "stateFedId":"OH00931", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":93, "submitDate":"2023-12-11T16:13:43.580Z", "surfaceArea":3387, "volume":5136000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1974, "congDist":"Congressional District 04, Ohio", "city":"WESTERVILLE", "county":"Delaware", "aiannh":null, "websiteUrl":"https://www.lrh.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/", "coreTypeIds":"3", "damTypeIds":"9;8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1;3", "nonFederalDamOnFederalId":0, "designerNames":"CELRH", "otherNames":"Alum Creek Lake", "ownerNames":"USACE - Huntington District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;4;5;8", "dsacId":5, "femaRegion":"5", "lastEapExcerDate":"2024-07-25T12:00:00.000Z", "dataUpdated":"2025-04-21T12:00:00.000Z", "usaceDistrict":"Huntington District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"050600", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3 }, "id":865108, "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/865108?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/865108?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/865108?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }