{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -81.9416, 33.3744 ] }, "properties":{ "provider":"SAS", "code":"NSBLD", "slug":"nsbld", "elevation":null, "horizontal_datum":"NAD83", "vertical_datum":"NAVD88", "state":"GA", "kind":"PROJECT", "nearest_city":"Augusta", "public_name":"New Savannah Bluff L&D", "location_code":43040, "nsid":null, "aliases":{ "NIDID":"GA01703" }, "timeseries":null, "name":"New Savannah Bluff L&D", "hasResopsAverages":"false", "nidId":"GA01703", "nidid":"", "levels":[ { "slug":"elev.streambed", "label":"Streambed", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"NSBLD.Elev-Pool.Inst.0.Streambed", "latest_value":85.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of dam", "label":"Top of Dam", "parameter":"Elev-Pool", "base_parameter":"Elev", "tsid":"NSBLD.Elev-Pool.Inst.0.Top of Dam", "latest_value":123, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NSBLD.Elev.Inst.0.Bottom of Conservation", "latest_value":112.5, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.bottom of flood", "label":"Bottom of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NSBLD.Elev.Inst.0.Bottom of Flood", "latest_value":115, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of conservation", "label":"Top of Conservation", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NSBLD.Elev.Inst.0.Top of Conservation", "latest_value":115, "units":"ft", "units_long_name":"Feet" }, { "slug":"elev.top of flood", "label":"Top of Flood", "parameter":"Elev", "base_parameter":"Elev", "tsid":"NSBLD.Elev.Inst.0.Top of Flood", "latest_value":116, "units":"ft", "units_long_name":"Feet" }, { "slug":"stor.bottom of conservation", "label":"Bottom of Conservation", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NSBLD.Stor.Inst.0.Bottom of Conservation", "latest_value":12837, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.bottom of flood", "label":"Bottom of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NSBLD.Stor.Inst.0.Bottom of Flood", "latest_value":17134, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.streambed", "label":"Streambed", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NSBLD.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":"NSBLD.Stor.Inst.0.Top of Conservation", "latest_value":17134, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of dam", "label":"Top of Dam", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NSBLD.Stor.Inst.0.Top of Dam", "latest_value":30885, "units":"ac-ft", "units_long_name":"Acre-feet" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"NSBLD.Stor.Inst.0.Top of Flood", "latest_value":18853, "units":"ac-ft", "units_long_name":"Acre-feet" } ], "id":549719, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":16, "damLength":360, "distance":13, "drainageArea":7508, "eapId":1, "dsacAssignedDate":"2015-04-02T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2023-11-16T12:00:00.000Z", "eapLastRevDate":"2022-07-14T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"GA01703", "oldFederalId":"GA01703", "hazardId":3, "hydraulicHeight":25, "inspectionAuthorityId":0, "inspectionDate":"2024-08-13T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":33.37245385, "lengthOfLocks":360, "secondaryLengthOfLocks":null, "longitude":-81.94097879, "maxDischarge":30000, "maxStorage":11610, "nidHeight":70, "nidStorage":11610, "normalStorage":9600, "numberOfLocks":1, "operationalStatusDate":"2015-04-02T12:00:00.000Z", "operationalStatusId":1, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) completed construction of the New Savannah Bluff Lock and Dam in 1937. The lock and dam was built across the Savannah River on the Georgia/South Carolina border in the counties of Richmond (Georgia) and Aiken (South Carolina), and 12 miles downstream of the city of Augusta, Georgia. The project was constructed for the purpose of improving commercial navigation between the Savannah Harbor and Augusta. The dam consists of five vertical lift gates separated by concrete piers. The three central gates are operated so that water flows beneath the bottom of the gates; the two end gates are typically operated so that water flows over the top of the gates. The lock chamber exists on the Georgia side of the dam, with an operations building located where the dam joins the lock. In the 1970s commercial navigation dwindled, with the last commercial shipment lockage occurring in 1979. The project shifted to caretaker status, with funding allocated only for the minimum operational needs. Lock operations continued to pass recreational craft and migratory fish. Project maintenance efforts were very limited due to funding restraints so most issues that are typical of an aging structure went unrepaired. In 2014, structural instability concerns with the lock walls caused all lockages to cease. In 2016, the Water Infrastructure Improvement for the Nation (WIIN) Act deauthorized the Lock & Dam project as a navigation structure. Although the project no longer serves navigation, the pool formed by the dam is a source of water supply for several municipalities and various industry in the Augusta area.", "riskCharSummary":"USACE completed a risk assessment for New Savannah Bluff Lock and Dam in October 2014 and classified the risk as low. Although the structure is deteriorating from age and limited maintenance, the risk attributed to a dam failure is considered low due to a lack of affected downstream population and economic impacts. A failure of the dam during normal river levels would cause minimal flooding that would stay within the banks of the Savannah River. During elevated river flows, the difference in water levels from the upstream side of the dam (pool) to downstream side (tailwater) are less than one foot, thus there would be negligible impacts from a dam failure. Consequentially, most economic impacts attributed to a dam failure are not from flood damages. Economic impacts are associated with a loss of water supply to the municipalities and industries that use water from the Lock and Dam pool.\n\nAlthough the consequences are relatively minimal from a failure of the Lock and Dam, failure of the dam is considered a possibility. The aging structure contains significant cracking, particularly in the concrete spillway piers. Progressive erosion is occurring around the base of the lock wall posing a stability issue. Although not likely, it is a possibility that failure of a spillway pier or the lock wall may occur, potentially as a result of a significant earthquake event.", "riskManagementMeasures":"USACE is continuously taking action to prepare for emergency incidents. This includes working closely with local emergency managers, regularly updating the Emergency Action Plan, and conducting emergency exercises with state and local response teams. USACE engineers perform annual inspections of the lock and dam and evaluate the dam\u2019s instrumentation on a quarterly basis. These inspections and instrumentation evaluations are used to assess how the dam is performing. Periodic training is conducted with project personnel responsible for the operation of the dam. This training is to help project personnel, that regularly visit the dam, to identify the early warning signs of a potential issue with the dam.", "riverName":"SAVANNAH RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":2, "spillwayWidth":300, "stateFedId":"GA01703", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":70, "submitDate":"2023-02-16T17:25:42.331Z", "surfaceArea":1000, "volume":75000, "widthOfLocks":56, "secondaryWidthOfLocks":null, "yearCompleted":1937, "congDist":"Congressional District 02, South Carolina", "city":"AUGUSTA", "county":"Aiken", "aiannh":null, "websiteUrl":"https://www.sas.usace.army.mil/Missions/Civil-Works/Savannah-Harbor-Expansion/SHEP-Fish-Passage/", "coreTypeIds":"2", "damTypeIds":"11;9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"3", "nonFederalDamOnFederalId":0, "designerNames":"CESAS", "otherNames":null, "ownerNames":"USACE - Savannah District", "ownerTypeIds":"3", "primaryDamTypeId":11, "primaryOwnerTypeId":3, "primaryPurposeId":8, "purposeIds":"8;5", "dsacId":4, "femaRegion":"4", "lastEapExcerDate":"2025-05-07T12:00:00.000Z", "dataUpdated":"2025-06-27T12:00:00.000Z", "usaceDistrict":"Savannah District", "noConsequencesId":1, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":2, "damStatusId":2, "huc06":"030601", "doi_region":null, "doi_region_name":"South Atlantic Gulf", "doi_region_number":2 }, "id":43040, "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/43040?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/43040?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/43040?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }