{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -86.5125, 39.0075 ] }, "properties":{ "provider":"LRL", "code":"Monroe", "slug":"monroe", "elevation":538.0, "horizontal_datum":"NAD27", "vertical_datum":"NGVD29", "state":"IN", "kind":"PROJECT", "nearest_city":"Harrodsburg, IN", "public_name":"Monroe Lake", "location_code":1126109, "nsid":null, "aliases":{ "NIDID":"IN03001" }, "timeseries":[ { "tsid":"Monroe.Elev.Inst.0.0.lrldlb-rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T10:00:00Z", "latest_value":545.21, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"Monroe.Precip.Total.~1Day.1Day.lrldlb-rev", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-04-14T10:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"Monroe.Flow-Outflow.Inst.0.0.lrldlb-comp", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Outflow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T10:00:00Z", "latest_value":2146.3, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Monroe.Stor.Inst.1Hour.0.lrldlb-comp", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T10:00:00Z", "latest_value":269664.12, "delta24h":null, "sort_order":11, "results":null }, { "tsid":"Monroe.Stor.Inst.1Hour.0.lrldlb-comp", "label":"Conservation Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-04-14T10:00:00Z", "latest_value":269664.12, "delta24h":null, "sort_order":13, "results":null }, { "tsid":"Monroe.Flow-Inflow.Ave.1Hour.6Hours.lrldlb-comp", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Inflow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T10:00:00Z", "latest_value":298.84, "delta24h":null, "sort_order":6, "results":null } ], "name":"Monroe Lake", "hasResopsAverages":"true", "nidId":"IN03001", "nidid":"", "levels":[ { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Bottom of Flood", "latest_value":538, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Bottom of Flood Control", "latest_value":538, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of inlet", "label":"Bottom of Inlet", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Bottom of Inlet", "latest_value":497, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of normal", "label":"Bottom of Normal", 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"label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Top of Flood", "latest_value":556, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of normal", "label":"Top of Normal", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Top of Normal", "latest_value":538, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of overflow", "label":"Top of Overflow", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Monroe.Elev.Inst.0.Top of Overflow", "latest_value":556, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Bottom of Flood", "latest_value":182250, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of flood control", "label":"Bottom of Flood Control", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Bottom of Flood Control", "latest_value":182250, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of inlet", "label":"Bottom of Inlet", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Bottom of Inlet", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Bottom of Normal", "latest_value":182200, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.guide curve", "label":"Guide Curve", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Guide Curve", "latest_value":182200, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Streambed", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Top of Conservation", "latest_value":182200, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Top of Dam", "latest_value":861080, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Top of Flood", "latest_value":441000, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Top of Normal", "latest_value":182200, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of overflow", "label":"Top of Overflow", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Monroe.Stor.Inst.0.Top of Overflow", "latest_value":441000, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549733, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1350, "distance":3, "drainageArea":441, "eapId":1, "dsacAssignedDate":"2018-05-14T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-05-14T12:00:00.000Z", "eapLastRevDate":"2019-09-05T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"IN03001", "oldFederalId":"IN03001", "hazardId":4, "hydraulicHeight":89, "inspectionAuthorityId":0, "inspectionDate":"2022-07-06T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.0082067050001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-86.511331054, "maxDischarge":74600, "maxStorage":441000, "nidHeight":93, "nidStorage":441000, "normalStorage":182250, "numberOfLocks":0, "operationalStatusDate":"2018-05-14T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) completed Monroe Lake Dam in 1965. The Monroe Lake project is located in south-central Indiana, approximately 58 air miles southwest of Indianapolis, Indiana, and 10 miles south of Bloomington, Indiana. The project authorized function includes flood risk management, water supply and recreation. The project consists of a 1,350-foot-long earth-filled embankment with a maximum height of 93 feet, a gate-controlled outlet works along the base of the right abutment, and an open-cut spillway through the left abutment. The project reduces flood damages along approximately 26 miles of Salt Creek, approximately 92 miles on the East Fork of the White River, and 52 miles of the White River before its confluence with the Wabash River. The lake has a drainage area of approximately 441 square miles. At spillway crest (El. 555.59 ft-NAVD88), the reservoir extends up Salt Creek approximately 43 miles. The record pool elevation is 556.89 ft-NAVD88 which occurred in May of 2011.", "riskCharSummary":"USACE completed a risk assessment for Monroe Lake Dam in March 2018 that characterizes the risk of the project as a Dam Safety Action Classification (DSAC) 5 which is considered Very Low relative to the dams USACE owns and operates. The dam significantly reduces the risk of flooding to downstream communities. However, it does not eliminate the risk completely. Even when the dam operates as intended, downstream flooding could still occur if a very large rainfall event were to result in unusually large quantities of water to flow through the dam spillway. There is also a very unlikely, but far more disastrous scenario that would produce significant flooding, which is erosion of the dam\u2019s embankment during a period of high reservoir levels that could lead to a breach of the dam. In this unlikely event, an uncontrolled surge of water could flow out of the reservoir, resulting in potentially deadly flooding along Salt Creek and the White River.\n\nIf a dam failure occurred, water from the reservoir would flood downstream areas. Communities in Monroe, Lawrence and Martin Counties in Indiana are most impacted by downstream flooding scenarios with slight impacts further downstream in Dubois, Pike, and Davies Counties in Indiana. The areas are primarily rural and consists of moderately rugged terrain primarily used for farming. The largest impacts would be to the cities of Oolitic on Salt Creek; Bedford, and Shoals on the East Fork of the White River; and low-lying areas around Petersburg on the White River. Impacts after the confluence with the Wabash River would be equivalent to seasonal flooding.", "riskManagementMeasures":"USACE is continuously taking significant steps to reduce the risk to the public. This includes working closely with local emergency managers, regularly updating the Emergency Action Plan, and conducting emergency exercises with state and local response teams. USACE utilizes the latest forecast and stream gauge information and coordinates closely with the National Weather Service concerning conditions both upstream and downstream of the dam including inflow, outflow, and precipitation. Rainfall forecasts are used to determine when high pool events may occur. USACE regularly inspects and monitors instruments to check the health of the dam. The frequency of these checks increases when the 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.", "riverName":"SALT CREEK", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":600, "stateFedId":"IN03001", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":93, "submitDate":"2023-11-30T16:34:42.861Z", "surfaceArea":10750, "volume":1072000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1965, "congDist":"Congressional District 09, Indiana", "city":"GUTHRIE", "county":"Monroe", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":null, "damTypeIds":"5;8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":null, "nonFederalDamOnFederalId":0, "designerNames":"CELRL", "otherNames":"Monroe Lake", "ownerNames":"USACE - Louisville District", "ownerTypeIds":"3", "primaryDamTypeId":5, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;5;8", "dsacId":5, "femaRegion":"5", "lastEapExcerDate":"2024-08-14T12:00:00.000Z", "dataUpdated":"2025-04-17T12:00:00.000Z", "usaceDistrict":"Louisville District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"051202", "doi_region":null, "doi_region_name":"Great Lakes", "doi_region_number":3, "thirtyYearAverage":296.0712, "tenthPercentile":226.3662, "ninetiethPercentile":366.5614 }, "id":1126109, "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/1126109?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/1126109?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/1126109?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }