{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -80.05068, 39.56455 ] }, "properties":{ "provider":"LRP", "code":"Opekiska", "slug":"opekiska", "elevation":825.55, "horizontal_datum":"WGS84", "vertical_datum":"NAVD88", "state":"WV", "kind":"PROJECT", "nearest_city":"Fairmont", "public_name":"Opekiska L/D", "location_code":16855111, "nsid":null, "aliases":{ "NIDID":"WV06108" }, "timeseries":[ { "tsid":"Opekiska-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":9.91, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"Opekiska-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":9.91, "delta24h":null, "sort_order":4, "results":null }, { "tsid":"Opekiska-Lower.Flow-Comp.Inst.1Hour.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Comp", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-15T00:00:00Z", "latest_value":1333.52, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Opekiska-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 } ], "name":"Opekiska L/D", "hasResopsAverages":"false", "nidId":"WV06108", "nidid":"", "levels":[ { "slug":"stage.streambed", "label":"Streambed", "parameter":"Stage", "base_parameter":"Stage", "tsid":"Opekiska.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":"Opekiska.Stage.Inst.0.Top of Dam", "latest_value":9, "units":"ft", "units_long_name":"Feet" } ], "id":550066, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":478, "distance":13, "drainageArea":2530, "eapId":1, "dsacAssignedDate":"2010-03-30T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-25T12:00:00.000Z", "eapLastRevDate":"2016-03-28T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"WV06108", "oldFederalId":"WV06108", "hazardId":2, "hydraulicHeight":36, "inspectionAuthorityId":0, "inspectionDate":"2021-08-17T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.5644838800001, "lengthOfLocks":600, "secondaryLengthOfLocks":null, "longitude":-80.050402898, "maxDischarge":117000, "maxStorage":14400, "nidHeight":52, "nidStorage":14400, "normalStorage":14400, "numberOfLocks":1, "operationalStatusDate":"2010-03-30T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) completed construction of Opekiska Lock and Dam across the Monongahela River in 1967. The dam is located about 13 miles downstream of the head of the Monongahela River at Fairmont, West Virginia and about 115 miles upstream of the confluence of the Allegheny and Monongahela Rivers in Pittsburgh, Pennsylvania. The purpose of the dam is to create a navigation pool from the dam upstream to the head of the Monongahela River. The dam is concrete and has four steel gates through which the river flows. The lock provides a lift of about 22 feet, from the pool downstream of the dam (lower pool) to the pool above the dam (upper pool). The lock allows river traffic to travel upstream or downstream of the dam. The lock consists of a rectangular chamber that is 84 feet wide by 600 feet long and formed on each side by concrete walls and steel gates on the upstream and downstream sides. The pool created by the dam also provides water supply to municipal and industrial intakes and provides recreation opportunities. The economic benefits of shipping materials and goods, water supply, and recreation through the lock is approximately 700 thousand 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, to the extent that the river could flow around the dam and drain the upper pool. If the upper pool were lost, the primary consequences would be the loss of shipping, water supply, and recreation, which would damage the regional economy by approximately 700 thousand dollars per year. The economic damage would be temporary, until the upper pool could be restored to allow resumption of shipping, water supply, and boat recreation. This scenario is considered very unlikely because 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":"MONONGAHELA RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":336, "stateFedId":"WV06108", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":52, "submitDate":"2023-02-16T17:25:41.091Z", "surfaceArea":800, "volume":0, "widthOfLocks":84, "secondaryWidthOfLocks":null, "yearCompleted":1967, "congDist":"Congressional District 02, West Virginia", "city":"MORGANTOWN", "county":"Monongalia", "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":"Opekiska Pool", "ownerNames":"USACE - Pittsburgh District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":3, "purposeIds":"3", "dsacId":4, "femaRegion":"3", "lastEapExcerDate":"2021-05-05T12:00:00.000Z", "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":"050200", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":16855111, "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/16855111?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/16855111?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/16855111?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }