{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -91.37654, 40.39251 ] }, "properties":{ "provider":"MVR", "code":"MI19", "slug":"mi19", "elevation":477.83, "horizontal_datum":"", "vertical_datum":"NGVD29", "state":"IA", "kind":"PROJECT", "nearest_city":"Keokuk", "public_name":"Mississippi River LD19", "location_code":2289017, "nsid":null, "aliases":{ "CWMS Standard Naming":"MI19", "NIDID":"IL01238", "CWMS Legacy Naming":"MI19" }, "timeseries":[ { "tsid":"MI19.Elev-Pool.Inst.30Minutes.0.rev", "label":"Elevation", "base_parameter":"Elev", "parameter":"Elev-Pool", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-08-25T15:00:00Z", "latest_value":518.32, "delta24h":null, "sort_order":1, "results":null }, { "tsid":"MI19.Elev-Tail.Inst.30Minutes.0.rev", "label":"Elevation Tailwater", "base_parameter":"Elev", "parameter":"Elev-Tail", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-08-25T15:00:00Z", "latest_value":480.61, "delta24h":null, "sort_order":3, "results":null } ], "name":"Mississippi River LD19", "hasResopsAverages":"false", "nidId":"IL01238", "nidid":"", "levels":[ { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev-Tail", "base_parameter":"Elev", "tsid":"MI19.Elev-Tail.Inst.0.Streambed", "latest_value":467, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev-Tail", "base_parameter":"Elev", "tsid":"MI19.Elev-Tail.Inst.0.Top of Dam", "latest_value":525.8, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" } ], "id":549728, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":7460, "distance":null, "drainageArea":119000, "eapId":1, "dsacAssignedDate":"2024-04-16T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-05-28T12:00:00.000Z", "eapLastRevDate":"2025-01-21T12:00:00.000Z", "enforcementAuthorityId":1, "federalId":"IL01238", "oldFederalId":"IL01238", "hazardId":3, "hydraulicHeight":38, "inspectionAuthorityId":1, "inspectionDate":"2023-04-03T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":1, "latitude":40.395, "lengthOfLocks":1200, "secondaryLengthOfLocks":null, "longitude":-91.374702, "maxDischarge":428000, "maxStorage":292000, "nidHeight":63, "nidStorage":292000, "normalStorage":0, "numberOfLocks":1, "operationalStatusDate":"2009-01-26T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":1, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The construction of the original Mississippi River Lock and Dam 19 was completed by the Mississippi River Power Company in 1913. Upon completion, the lock and dry dock were turned over to the federal government and the U.S. Army Corps of Engineers while the dam and powerhouse remained under private ownership and control. The original lock, dry dock, powerhouse and dam were placed into service in June 1913. The Mississippi River Power Company was purchased by Union Electric Power Company in 1925 and is currently known as Ameren. The construction of the current lock was completed by the U.S. Army Corps of Engineers and placed into service in 1957. Lock and Dam 19 is located on the Mississippi River near Keokuk, Iowa. The project consists of a lock chamber, an abandoned original lock and dry dock closed off by a sheet pile cell structure, a powerhouse, and a movable gate dam. The main lock chamber is used to raise or lower river traffic between the upstream and downstream pools to navigate past the dam. The lock chamber can raise or lower river traffic a maximum of 38 feet, depending on the river conditions. The powerhouse has a total length of 1,718 feet and contains 15 main generating turbines with a generating capacity of 134 megawatts and 2 house service turbines with a generating capacity of 3.8 megawatts. The dam has an overall length of 4,649 feet and includes 4,278 feet of movable gate section, an east abutment of 290 feet, and a west abutment of 81 feet. The sheet pile cell structure constructed upstream of the original lock and dry dock is 540 feet in length. The dam gates are used in conjunction with the flows through the powerhouse to regulate the Mississippi River for all river conditions.", "riskCharSummary":"USACE completed a risk assessment in April 2023 and classified the risk associated with Lock and Dam 19 as very low. The assessment investigated the risks to the project from scour downstream of the dam and failure of the miter gate during ice or debris flushing operations. Although unlikely, a dam failure would impact river navigation upstream of the dam only and a lock shutdown was estimated to be short enough to result in no substantial economic damages to navigation. There is no estimated life loss resulting from a failure of the dam and the flood wave produced by a dam failure would remain within the riverbanks resulting in minimal to no downstream property damages.", "riskManagementMeasures":"USACE works to reduce the risks posed to the community by Lock and Dam 19. USACE operations and engineering staff and Ameren staff routinely conduct detailed inspections of the project to ensure the integrity of the lock and dam, identify new deficiencies, and monitor known deficiencies. The lock, dam, and powerhouse are well maintained through continuous operations and regular maintenance activities. The dam has a robust instrumentation and monitoring program that allows Ameren staff to regularly monitor the dam\u2019s performance under changing river conditions. The dam\u2019s joint Emergency Action Plan between the U.S. Army Corps of Engineers and Ameren is updated regularly, and the emergency notification charts are updated annually. This plan has been coordinated with state and local Emergency Management Agencies to help improve their dam incident response planning and preparedness responsibilities. Emergency exercises are routinely held with local and state emergency responders and stakeholders to enhance the local communities\u2019 emergency response plans.", "riverName":"MISSISSIPPI RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":4410, "stateFedId":"IL01238", "stateRegulatoryAgency":null, "stateRegulatedId":1, "structuralHeight":63, "submitDate":"2023-02-16T17:25:24.235Z", "surfaceArea":30845, "volume":650000, "widthOfLocks":110, "secondaryWidthOfLocks":null, "yearCompleted":1913, "congDist":"Congressional District 01, Iowa", "city":"KEOKUK", "county":"Lee", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":"2", "damTypeIds":"11;9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CE/UNION ELEC", "otherNames":"Lake Keokuk", "ownerNames":"USACE - Rock Island District", "ownerTypeIds":"3", "primaryDamTypeId":11, "primaryOwnerTypeId":3, "primaryPurposeId":3, "purposeIds":"3;6", "dsacId":5, "femaRegion":"5", "lastEapExcerDate":"2025-02-20T12:00:00.000Z", "dataUpdated":"2025-02-21T12:00:00.000Z", "usaceDistrict":"Rock Island District", "noConsequencesId":1, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"070801", "doi_region":null, "doi_region_name":"Mississippi Basin", "doi_region_number":4 }, "id":2289017, "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/2289017?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/2289017?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/2289017?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }