{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -80.86346, 39.66711 ] }, "properties":{ "provider":"LRP", "code":"Hannibal", "slug":"hannibal", "elevation":589.23, "horizontal_datum":"WGS84", "vertical_datum":"NAVD88", "state":"WV", "kind":"PROJECT", "nearest_city":"Wheeling", "public_name":"Hannibal L/D", "location_code":16656111, "nsid":null, "aliases":{ "NIDID":"WV10301" }, "timeseries":[ { "tsid":"Hannibal-Lower.Flow-Lower.Inst.1Hour.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Lower", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T22:00:00Z", "latest_value":67079.13, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Hannibal-Lower.Stage-Lower.Inst.1Hour.0.OBS", "label":"Stage Tailwater", "base_parameter":"Stage", "parameter":"Stage-Lower", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":15.28, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"Hannibal-Lower.Precip-Inc.Total.1Hour.1Hour.OBS", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip-Inc", "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":"Hannibal-Lower.Stage-Upper.Inst.1Hour.0.OBS", "label":"Stage", "base_parameter":"Stage", "parameter":"Stage-Upper", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T22:00:00Z", "latest_value":12.89, "delta24h":null, "sort_order":4, "results":null } ], "name":"Hannibal L/D", "hasResopsAverages":"false", "nidId":"WV10301", "nidid":"", "levels":[ { "slug":"stage.streambed", "label":"Streambed", "parameter":"Stage", "base_parameter":"Stage", "tsid":"Hannibal.Stage.Inst.0.Streambed", "latest_value":0, "units":"ft", "units_long_name":"Feet" }, { "slug":"stage.top of dam", "label":"Top of Dam", "parameter":"Stage", "base_parameter":"Stage", "tsid":"Hannibal.Stage.Inst.0.Top of Dam", "latest_value":12, "units":"ft", "units_long_name":"Feet" } ], "id":550052, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1403, "distance":1, "drainageArea":25967, "eapId":1, "dsacAssignedDate":"2017-05-19T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-25T12:00:00.000Z", "eapLastRevDate":"2021-09-08T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"WV10301", "oldFederalId":"WV10301", "hazardId":3, "hydraulicHeight":51, "inspectionAuthorityId":0, "inspectionDate":"2021-06-29T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.667113, "lengthOfLocks":1200, "secondaryLengthOfLocks":null, "longitude":-80.863456, "maxDischarge":335000, "maxStorage":130000, "nidHeight":51, "nidStorage":130000, "normalStorage":130000, "numberOfLocks":2, "operationalStatusDate":"2017-05-19T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The US Army Corps of Engineers (USACE) constructed Hannibal Locks and Dam across the Ohio River in 1972. Hannibal Locks and Dam is located in Hannibal Ohio, about 126 miles downstream from Pittsburgh, Pennsylvania. The dam is concrete and includes a fixed concrete spillway and 8 gated bays through which the river flows. There is also a privately owned hydropower plant near the left bank and in line with the dam. The purpose of this dam is to create a navigation pool from the dam to the upstream Pike Island Locks and Dam. The locks provide a lift of about 21 feet, from the pool downstream of the dam (lower pool) to the pool upstream of the dam (upper pool). The locks allow river traffic to travel upstream or downstream of the dam. The locks include a main chamber that is 1,200 feet long and 110 feet wide and a second, auxiliary lock chamber that is 600 feet long by 110 feet wide. The lock chambers are adjacent to each other and are formed on each side by concrete walls and steel lock gates on the upstream and downstream sides. The pool created by the dam also provides water supply for municipal and industrial intakes, hydropower generation, and recreational opportunities for the surrounding communities. The total benefits to the region are more than 630 million dollars annually. The dam does not provide the nearby communities with any protection from flooding.", "riskCharSummary":"The most recent risk assessment of the dam was performed in 2009, which characterized the risk as low. The assessment identified one primary scenario that could cause the dam to fail. When the river is at normal levels, water seeping around the concrete lock walls could erode the soil behind the walls. If unchecked, the erosion could progress to the point that the upper pool would be lost (i.e., too low to allow river traffic to continue). If the upper pool were lost, the primary consequence would be the loss of shipping and recreation, which would damage the regional economy by more than 1.9 million dollars per year. The economic damage would be temporary, until the upper pool could be restored to allow resumption of shipping and boat recreation. Although this scenario is possible, the dam has performed well for over 50 years without incident or indications that this scenario is occurring. Downstream flooding would not be expected if the dam were to fail and the upper pool was lost.", "riskManagementMeasures":"To ensure we are taking all steps to reduce the risk to the economy, we will continue to work closely with the Coast Guard, the Waterways Association and the shipping industry to keep them aware of conditions at the dam and changes to lock operations. We regularly update our emergency action plan. We conduct routine monitoring and surveillance of the lock and dam. We closely follow rainfall forecasts to determine when high river events may occur to provide information for any necessary public or industry notifications. We closely monitor river levels and provide advisories if river levels may become unsafe for shipping. Information on river levels and forecasts are available to the public via the internet at: \n\nhttp://water.weather.gov/ahps2/forecasts.php?wfo=pbz", "riverName":"OHIO RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":959, "stateFedId":"WV10301", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":42, "submitDate":"2023-02-16T17:25:37.050Z", "surfaceArea":6650, "volume":0, "widthOfLocks":110, "secondaryWidthOfLocks":null, "yearCompleted":1974, "congDist":"Congressional District 02, West Virginia", "city":"NEW MARTINSVILLE", "county":"Wetzel", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":"2", "damTypeIds":"9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CELRP", "otherNames":"Hannibal Pool", "ownerNames":"USACE - Pittsburgh District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":3, "purposeIds":"3;6", "dsacId":4, "femaRegion":"3", "lastEapExcerDate":"2018-08-28T12:00:00.000Z", "dataUpdated":"2025-06-02T12:00:00.000Z", "usaceDistrict":"Pittsburgh District", "noConsequencesId":1, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":2, "damStatusId":2, "huc06":"050302", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":16656111, "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/16656111?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/16656111?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/16656111?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }