{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -79.81538, 40.53832 ] }, "properties":{ "provider":"LRP", "code":"Acmetonia", "slug":"acmetonia", "elevation":725.8, "horizontal_datum":"WGS84", "vertical_datum":"NGVD29", "state":"PA", "kind":"PROJECT", "nearest_city":"New Kensington", "public_name":"L/D-3, CW Bill Young", "location_code":17106111, "nsid":null, "aliases":{ "NIDID":"PA00113" }, "timeseries":[ { "tsid":"Acmetonia-UpperWQ.Flow-Upper.Inst.1Hour.0.OBS", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow-Upper", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-04-14T21:00:00Z", "latest_value":34198.45, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"Acmetonia-UpperWQ.Stage-Upper.Inst.1Hour.0.OBS", "label":"Stage", "base_parameter":"Stage", "parameter":"Stage-Upper", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-04-14T21:00:00Z", "latest_value":12.65, "delta24h":null, "sort_order":4, "results":null }, { "tsid":"Acmetonia-Upper.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":14.53, "delta24h":null, "sort_order":5, "results":null } ], "name":"L/D-3, CW Bill Young", "hasResopsAverages":"false", "nidId":"PA00113", "nidid":"", "levels":[ { "slug":"stage.streambed", "label":"Streambed", "parameter":"Stage", "base_parameter":"Stage", "tsid":"Acmetonia.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":"Acmetonia.Stage.Inst.0.Top of Dam", "latest_value":9, "units":"ft", "units_long_name":"Feet" } ], "id":549995, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":null, "damLength":1550, "distance":1, "drainageArea":11537, "eapId":1, "dsacAssignedDate":"2024-10-10T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-10-25T12:00:00.000Z", "eapLastRevDate":"2016-03-28T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"PA00113", "oldFederalId":"PA00113", "hazardId":3, "hydraulicHeight":36, "inspectionAuthorityId":0, "inspectionDate":"2023-10-10T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":40.5382032860001, "lengthOfLocks":360, "secondaryLengthOfLocks":null, "longitude":-79.815366303, "maxDischarge":200000, "maxStorage":16800, "nidHeight":36, "nidStorage":16800, "normalStorage":16800, "numberOfLocks":1, "operationalStatusDate":"2010-03-30T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) constructed CW Bill Young Lock and Dam (aka Allegheny 3 Lock and Dam) across the Allegheny River in 1934. The dam is located near Oakmont, Pennsylvania, about 15 miles upstream of the confluence of the Allegheny and Monongahela Rivers in Pittsburgh, PA. The purpose of the dam is to create a navigation pool from the dam upstream to Allegheny Lock and Dam 4, which is located near Tarentum, PA. The dam consists of a concrete spillway section, which means that the river flows freely over it. The lock provides a lift of about 14 feet, from the pool downstream of the dam to the pool above the dam. The lock allows river traffic to travel upstream or downstream of the dam. The lock consists of a rectangular chamber that is 56 feet wide by 360 feet long and formed on each side by concrete walls and steel gates on the upstream and downstream sides. The lock gates are supported by steel anchorage frames embedded in the concrete lock walls, which work similarly to hinges on a door. The economic benefit of shipping materials and goods through the lock is more than 15 million dollars annually. Additionally, the upper pool is a source of water supply for nearby communities, amounting to more than 6 million dollars each year. There are no means of controlling the flow over the dam and the dam does not provide the nearby communities any protection from flooding. The pool created by the dam also provides recreation opportunities for metropolitan Pittsburgh.", "riskCharSummary":"The most recent risk assessment of the dam was performed in 2023, which characterized the risk as very low. The assessment identified one primary scenario that could halt river traffic. When the river is at normal levels, the lock gate anchorage (similar to a hinge on a door) could break and prevent the gate from closing. If this were to happen, river traffic would be halted until the gate anchorage could be replaced, which could take 1.5 months to 6 months depending on the damage to the anchorage and lock gate. In this scenario, both the upper pool and the lower pool would be unaffected and there would be no resulting flooding on the Allegheny River.", "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. When we determine that our lock gates are at risk of failure, we take action to replace them and any vulnerable components as quickly as possible. We conduct emergency exercises with our external partners to improve communication and reactions in the event of an emergency that threatens the dam or that may adversely affect shipping. We regularly update our emergency action plan. We conduct routine monitoring and surveillance of the nearby riverbed, 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":"ALLEGHENY RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":1436, "stateFedId":"PA00113", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":36, "submitDate":"2023-02-16T17:25:35.018Z", "surfaceArea":1220, "volume":0, "widthOfLocks":56, "secondaryWidthOfLocks":null, "yearCompleted":1934, "congDist":"Congressional District 17, Pennsylvania", "city":"OAKMONT", "county":"Allegheny", "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":"Allegheny River Lock and Dam 3", "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CELRP", "otherNames":null, "ownerNames":"USACE - Pittsburgh District", "ownerTypeIds":"3", "primaryDamTypeId":9, "primaryOwnerTypeId":3, "primaryPurposeId":3, "purposeIds":"3", "dsacId":5, "femaRegion":"3", "lastEapExcerDate":"2024-09-24T12:00:00.000Z", "dataUpdated":"2025-05-30T12:00:00.000Z", "usaceDistrict":"Pittsburgh District", "noConsequencesId":1, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":2, "damStatusId":2, "huc06":"050100", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":17106111, "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/17106111?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/17106111?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/17106111?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }