{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -80.38601, 40.65064 ] }, "properties":{ "provider":"LRP", "code":"Montgomery", "slug":"montgomery", "elevation":653.6, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"PA", "kind":"PROJECT", "nearest_city":"Aliquippa", "public_name":"Montgomery L/D", "location_code":16460111, "nsid":null, "aliases":{ "NIDID":"PA00128" }, "timeseries":[ { "tsid":"Montgomery-UpperWQ.Conc-DO.Inst.1Hour.0.OBS", "label":"Dissolved Oxygen", "base_parameter":"Conc", "parameter":"Conc-DO", "unit":"ppm", "unit_long_name":"Parts per million", "latest_time":"2026-04-14T21:00:00Z", "latest_value":0.0, "delta24h":null, "sort_order":18, "results":null }, { "tsid":"Montgomery-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":12.45, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"Montgomery-UpperWQ.Temp-Water.Inst.1Hour.0.OBS", "label":"Water Temperature", "base_parameter":"Temp", "parameter":"Temp-Water", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-04-14T21:00:00Z", "latest_value":56.75, "delta24h":null, "sort_order":17, "results":null }, { "tsid":"Montgomery-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":6086.18, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Montgomery-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":12.56, "delta24h":null, "sort_order":4, "results":null } ], "name":"Montgomery L/D", "hasResopsAverages":"false", "nidId":"PA00128", "nidid":"", "levels":[ { "slug":"stage.streambed", "label":"Streambed", "parameter":"Stage", "base_parameter":"Stage", "tsid":"Montgomery.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":"Montgomery.Stage.Inst.0.Top of Dam", "latest_value":12, "units":"ft", "units_long_name":"Feet" } ], "id":549963, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1590, "distance":2, "drainageArea":22969, "eapId":1, "dsacAssignedDate":"2020-04-28T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-25T12:00:00.000Z", "eapLastRevDate":"2021-09-08T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"PA00128", "oldFederalId":"PA00128", "hazardId":3, "hydraulicHeight":35, "inspectionAuthorityId":0, "inspectionDate":"2024-07-12T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.6494210750001, "lengthOfLocks":600, "secondaryLengthOfLocks":null, "longitude":-80.385724231, "maxDischarge":320000, "maxStorage":57500, "nidHeight":62, "nidStorage":57500, "normalStorage":57500, "numberOfLocks":2, "operationalStatusDate":"2020-04-28T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) completed construction of Montgomery Locks and Dam across the Ohio River in 1936. The dam is located in Beaver County, Pennsylvania, about 32 miles downstream of the head of the Ohio River in Pittsburgh, Pennsylvania. The purpose of the dam is to create a navigation pool from the dam upstream to Dashields Locks and Dam, which is located near Edgeworth, Pennsylvania. The dam is concrete and has 10 steel gates, which help control river levels near the dam. The lock provides a lift of nearly 18 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 includes of a main rectangular lock chamber that is 110 feet wide by 600 feet long and a second, auxiliary chamber, that is 56 feet wide by 360 feet long. The lock chambers are adjacent to each other and are formed on each side by concrete walls and steel gates on the upstream and downstream sides. The economic benefit of shipping materials and goods through the lock is more than 290 million dollars annually. Water intakes are located in the upper pool which provides water supply to municipal and industrial agencies. 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 2019, which characterized the risk as low. The assessment identified three scenarios that could cause the dam to fail: 1) Under normal river levels the steel dam gates could collapse due to corrosion; 2) During times of high river levels, barges in the upper pool could become trapped on the dam, which could prevent one or more dam gates from closing; and 3) When one of the gates is under repair, a bulkhead is in place, and there are high river levels, barges in the upper pool could collide with the bulkhead, causing it to collapse. Any of these three scenarios, although very unlikely, could result in a loss of the upper pool to the extent that river traffic would be halted. If the upper pool were lost, the primary consequence would be the loss of shipping and water supply, which would damage the regional economy by more than 290 million dollars per year. The economic damage would be temporary, until the upper pool could be restored to allow resumption of shipping and water supply. 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 have replaced all of the dam gates, which are designed to withstand barge impacts. Because all of the gates have been replaced, the bulkhead is no longer needed, except for future short-term maintenance. 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 riverbed, and the locks and dam. We conduct emergency exercises with our external partners to improve communications and reactions in the event of an emergency that threatens the dam\u2019s upper pool or may adversely affect navigations. 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":1220, "stateFedId":"PA00128", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":62, "submitDate":"2023-02-16T17:25:42.291Z", "surfaceArea":2990, "volume":0, "widthOfLocks":110, "secondaryWidthOfLocks":null, "yearCompleted":1936, "congDist":"Congressional District 17, Pennsylvania", "city":"INDUSTRY", "county":"Beaver", "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":"Montgomery Pool", "ownerNames":"USACE - Pittsburgh District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":3, "purposeIds":"3", "dsacId":4, "femaRegion":"3", "lastEapExcerDate":null, "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":"050301", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":16460111, "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/16460111?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/16460111?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/16460111?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }