{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -79.12634, 39.42929 ] }, "properties":{ "provider":"NAB", "code":"Randolph", "slug":"randolph", "elevation":1400.0, "horizontal_datum":"WGS84", "vertical_datum":"LOCAL", "state":"WV", "kind":"PROJECT", "nearest_city":"Elk Garden", "public_name":"Jennings Randolph Lake", "location_code":421020, "nsid":null, "aliases":{ "NIDID":"MD00069", "CWMS Legacy Naming":"Randolph", "CWMS Standard Naming":"Randolph", "CBT Station ID":"lwx", "DCP Platform ID":"CE436D34", "USGS Station Number":"01595790", "SHEF Location ID":"BLMW2" }, "timeseries":[ { "tsid":"Randolph.%-FloodControl.Inst.15Minutes.0.Best-NAB-Computed", "label":"Percent Flood Pool", "base_parameter":"%", "parameter":"%-FloodControl", "unit":"%", "unit_long_name":"Percent", "latest_time":"2026-04-14T13:15:00Z", "latest_value":0.0, "delta24h":null, "sort_order":12, "results":null }, { "tsid":"Randolph.Stor.Inst.15Minutes.0.Best-NAB", "label":"Flood 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"tsid":"Randolph.Elev.Inst.0.25% Flood Storage", "latest_value":1475.15, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.5% flood storage", "label":"5% Flood Storage", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.5% Flood Storage", "latest_value":1467.87, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.50% flood storage", "label":"50% Flood Storage", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.50% Flood Storage", "latest_value":1483.83, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.maximum", "label":"Maximum", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Maximum", "latest_value":1508.9, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.record", "label":"Record", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Record", "latest_value":1494.55, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.spillway crest", "label":"Spillway Crest", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Spillway Crest", "latest_value":1500, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Streambed", "latest_value":1218, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Top of Conservation", "latest_value":1466, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Top of Dam", "latest_value":1514, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood control", "label":"Top of Flood Control", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Top of Flood Control", "latest_value":1500, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of inactive", "label":"Top of Inactive", "parameter":"Elev", "base_parameter":"Elev", "tsid":"Randolph.Elev.Inst.0.Top of Inactive", "latest_value":1255, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Randolph.Stor.Inst.0.Streambed", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of conservation", "label":"Top of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Randolph.Stor.Inst.0.Top of Conservation", "latest_value":90312.99, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Randolph.Stor.Inst.0.Top of Dam", "latest_value":141146.63, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood control", "label":"Top of Flood Control", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Randolph.Stor.Inst.0.Top of Flood Control", "latest_value":124801.08, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of inactive", "label":"Top of Inactive", "parameter":"Stor", "base_parameter":"Stor", "tsid":"Randolph.Stor.Inst.0.Top of Inactive", "latest_value":110.46, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":550431, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":296, "damLength":2130, "distance":null, "drainageArea":263, "eapId":1, "dsacAssignedDate":"2020-03-24T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2020-06-30T12:00:00.000Z", "eapLastRevDate":"2020-06-30T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MD00069", "oldFederalId":"MD00069", "hazardId":4, "hydraulicHeight":291, "inspectionAuthorityId":0, "inspectionDate":"2024-06-03T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":39.43224146, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-79.12241495, "maxDischarge":193000, "maxStorage":130900, "nidHeight":296, "nidStorage":130900, "normalStorage":94700, "numberOfLocks":0, "operationalStatusDate":"2020-03-24T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) built Jennings Randolph Dam in 1981 to reduce the risk of flooding to downstream communities by storing water during major flood events. It is located on the North Branch Potomac River on the state line between Garrett County, MD and Mineral County, WV, approximately eight miles upstream of the confluence with the Savage River at Bloomington, MD. The dam consists of an earthen embankment that creates Jennings Randolph Lake which provides water quality, water supply and recreation benefits. Releases are made by a system of gates which discharge flow through a conduit in the abutment of the dam. The project also includes a gated concrete spillway which can release large flows during significant flood events.", "riskCharSummary":"Although Jennings Randolph Dam reduces the risk of flooding to downstream communities, it does not eliminate the risk of flooding. The most likely scenario that could result in downstream flooding would be a high-volume release of water from the dam\u2019s spillway during significant storm events. To maintain the structural integrity of the dam when the water level in the reservoir gets high, the spillway releases water to the North Branch Potomac River. The amount of water being released could be great enough to cause flooding in downstream communities. Such higher releases from the spillway could create conditions similar to how the river might behave if the dam did not exist.\n\nThere are also unlikely, but far more devastating scenarios involving breach of the dam that would produce significant flooding. This could involve situations such as: a rare, extreme rainfall event resulting in water flowing over the earthen dam, eroding the dam, and leading to a breach of the dam, or; unexpected behavior of seepage through the dam eroding soil from within the embankment leading to a breach. If a breach were to occur, an uncontrolled surge of water would flow out of the reservoir, flooding downstream communities. Bloomington, Luke, Westernport, Piedmont, Keyser, Cumberland and adjacent communities are in the most immediate danger in the event of a flood. Other communities along the North Branch Potomac River would also be impacted.\n\nIn any of the scenarios described above, the downstream floodwater would be swift and deep, overflowing levees, destroying buildings and key infrastructure, and those caught unaware and/or unable to evacuate could perish. In the less likely dam breach scenarios, the water depth, property damage, and lives lost would likely be far greater.", "riskManagementMeasures":"The U.S. Army Corps of Engineers (USACE) performs ongoing activities to ensure the integrity of the Jennings Randolph Dam and to manage and reduce risk to the downstream communities. The dam is well maintained, inspected, and monitored. The frequency of inspection and monitoring increases during high water events. USACE regularly updates the Emergency Action Plan for the dam and performs emergency response exercises with Federal, state, and local emergency managers to remain prepared to respond to flood events affecting the dam. USACE also closely follows rainfall forecasts to determine when high water events may occur to provide information for any necessary flood warnings.", "riverName":"NORTH BRANCH POTOMAC RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":1, "spillwayWidth":242, "stateFedId":"MD00069", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":296, "submitDate":"2021-05-28T12:00:00.000Z", "surfaceArea":965, "volume":10000000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1981, "congDist":"Congressional District 02, West Virginia", "city":"BARNUM", "county":"Mineral", "aiannh":null, "websiteUrl":"https://www.usace.army.mil/Missions/Civil-Works/Dam-Safety-Program/Article/2870967/dam-safety-program/", "coreTypeIds":"3", "damTypeIds":"5;8", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":"Bloomington Dam", "foundationTypeIds":"1", "nonFederalDamOnFederalId":0, "designerNames":"CENAB", "otherNames":"Jennings Randolph Lake", "ownerNames":"USACE - Baltimore District", "ownerTypeIds":"3", "primaryDamTypeId":5, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9;12;5;8", "dsacId":2, "femaRegion":"3", "lastEapExcerDate":"2024-03-22T12:00:00.000Z", "dataUpdated":"2025-02-06T12:00:00.000Z", "usaceDistrict":"Baltimore District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"020700", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":421020, "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/421020?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/421020?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/421020?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }