{ "bbox":null, "type":"Feature", "geometry":{ "bbox":null, "type":"Point", "coordinates":[ -72.8636, 42.2906 ] }, "properties":{ "provider":"NAE", "code":"KVD", "slug":"kvd", "elevation":479.99, "horizontal_datum":"WGS84", "vertical_datum":"", "state":"MA", "kind":"PROJECT", "nearest_city":"Northampton", "public_name":"Knightville Dam", "location_code":8100021, "nsid":null, "aliases":{ "NIDID":"MA00969", "CWMS Legacy Naming":"KVD", "CWMS Standard Naming":"KVD", "USGS Station Number":"01179500" }, "timeseries":[ { "tsid":"KVD.Stage-TAILWATER.Inst.15Minutes.0.DCP-rev", "label":"Stage Tailwater", "base_parameter":"Stage", "parameter":"Stage-TAILWATER", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-08-25T21:30:00Z", "latest_value":2.78, "delta24h":null, "sort_order":5, "results":null }, { "tsid":"KVD.Precip.Inst.15Minutes.0.DCP-rev", "label":"Precipitation", "base_parameter":"Precip", "parameter":"Precip", "unit":"in", "unit_long_name":"Inches", "latest_time":"2026-08-25T22:00:00Z", "latest_value":31.41, "delta24h":null, "sort_order":16, "results":null }, { "tsid":"KVD.Stage-Pool.Inst.15Minutes.0.DCP-rev", "label":"Stage", "base_parameter":"Stage", "parameter":"Stage-Pool", "unit":"ft", "unit_long_name":"Feet", "latest_time":"2026-08-25T22:00:00Z", "latest_value":1.9, "delta24h":null, "sort_order":4, "results":null }, { "tsid":"KVD.Flow.Inst.15Minutes.0.DCP-rev", "label":"Outflow", "base_parameter":"Flow", "parameter":"Flow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-08-25T21:30:00Z", "latest_value":60.76, "delta24h":null, "sort_order":7, "results":null }, { "tsid":"KVD.Flow-Inflow.Total.15Minutes.6Hours.DCP-rev", "label":"Inflow", "base_parameter":"Flow", "parameter":"Flow-Inflow", "unit":"cfs", "unit_long_name":"Cubic feet per second", "latest_time":"2026-08-25T21:30:00Z", "latest_value":64.89, "delta24h":null, "sort_order":6, "results":null }, { "tsid":"KVD.Temp-Air.Inst.15Minutes.0.DCP-rev", "label":"Air Temperature", "base_parameter":"Temp", "parameter":"Temp-Air", "unit":"F", "unit_long_name":"Fahrenheit", "latest_time":"2026-08-25T21:30:00Z", "latest_value":75.7, "delta24h":null, "sort_order":22, "results":null }, { "tsid":"KVD.Stor.Inst.15Minutes.0.DCP-rev", "label":"Flood Storage", "base_parameter":"Stor", "parameter":"Stor", "unit":"ac-ft", "unit_long_name":"Acre-feet", "latest_time":"2026-08-25T22:00:00Z", "latest_value":13.95, "delta24h":null, "sort_order":11, "results":null } ], "name":"Knightville Dam", "hasResopsAverages":"false", "nidId":"MA00969", "nidid":"", "levels":[ { "slug":"stage.bottom of normal", "label":"Bottom of Normal", "parameter":"Stage-Pool", "base_parameter":"Stage", "tsid":"KVD.Stage-Pool.Inst.0.Bottom of Normal", "latest_value":0, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"stage.streambed", "label":"Streambed", "parameter":"Stage-Pool", "base_parameter":"Stage", "tsid":"KVD.Stage-Pool.Inst.0.Streambed", "latest_value":0, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"stage.top of dam", "label":"Top of Dam", "parameter":"Stage-Pool", "base_parameter":"Stage", "tsid":"KVD.Stage-Pool.Inst.0.Top of Dam", "latest_value":150, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"stage.top of flood", "label":"Top of Flood", "parameter":"Stage-Pool", "base_parameter":"Stage", "tsid":"KVD.Stage-Pool.Inst.0.Top of Flood", "latest_value":130, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"stage.top of normal", "label":"Top of Normal", "parameter":"Stage-Pool", "base_parameter":"Stage", "tsid":"KVD.Stage-Pool.Inst.0.Top of Normal", "latest_value":0, "units":"ft", "units_long_name":"Feet", "type":"CONSTANT" }, { "slug":"stor.bottom of normal", "label":"Bottom of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"KVD.Stor.Inst.0.Bottom of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet", "type":"CONSTANT" }, { "slug":"stor.top of flood", "label":"Top of Flood", "parameter":"Stor", "base_parameter":"Stor", "tsid":"KVD.Stor.Inst.0.Top of Flood", "latest_value":49000, "units":"ac-ft", "units_long_name":"Acre-feet", "type":"CONSTANT" }, { "slug":"stor.top of normal", "label":"Top of Normal", "parameter":"Stor", "base_parameter":"Stor", "tsid":"KVD.Stor.Inst.0.Top of Normal", "latest_value":0, "units":"ac-ft", "units_long_name":"Acre-feet", "type":"CONSTANT" } ], "id":550426, "associatedStructuresCount":0, "conditionAssessDate":null, "conditionAssessDetail":null, "conditionAssessId":6, "damHeight":150, "damLength":1200, "distance":null, "drainageArea":162, "eapId":1, "dsacAssignedDate":"2019-04-25T12:00:00.000Z", "eapMeetsGuidelinesId":1, "emergencyContactsUpdated":"2024-12-20T12:00:00.000Z", "eapLastRevDate":"2021-04-28T12:00:00.000Z", "enforcementAuthorityId":0, "federalId":"MA00969", "oldFederalId":"MA00969", "hazardId":4, "hydraulicHeight":145, "inspectionAuthorityId":0, "inspectionDate":"2023-05-09T12:00:00.000Z", "inspectionFrequency":5, "jurisdictionAuthorityId":0, "latitude":42.2907064310001, "lengthOfLocks":0, "secondaryLengthOfLocks":null, "longitude":-72.861790152, "maxDischarge":83000, "maxStorage":64000, "nidHeight":150, "nidStorage":64000, "normalStorage":0, "numberOfLocks":0, "operationalStatusDate":"2019-04-25T12:00:00.000Z", "operationalStatusId":2, "originalDesignerName":null, "otherStructureId":null, "permittingAuthorityId":0, "politicalPartyId":null, "privateDamId":null, "projectDescription":"The U.S. Army Corps of Engineers (USACE) built Knightville Dam in 1941 across the main Branch of the Westfield River. Knightville dam is operated by the Corps of Engineers for flood control with nearby Littleville Dam and to provide flood protection to downstream communities on the Westfield River. It is operated in conjunction with 14 other Corps of Engineers flood control reservoirs in the Connecticut River basin, to reduce flooding on the main stem of the Connecticut River. The dam was built in response to the severe flooding that used to occur in the Connecticut River basin. Knightville dam normally does not hold water outside of flood events. Since it began operations, the dam has reduced damage caused by downstream flooding by more than $350 million.\n\nThe dam is made of hydraulically placed and compacted earth fill with a layer of rockfill protection on its slopes. The dam is approximately 16 stories (160 feet) high. A 16-foot diameter concrete lined tunnel in rock passes through the dam. Metal slide gates at the upstream side of this tunnel are opened to allow water to pass through the dam and are closed when water needs to be stored during flood events. To maintain the structural integrity of the dam when the water level in the reservoir gets high, water can also be released across the spillway, a sloped concrete structure located at the west end (right side) of the dam. A spillway is similar in concept to a sink overflow that prevents a sink bowl from completely overflowing. The curved concrete spillway is slightly longer than a football field and is approximately two stories below the top of the dam.", "riskCharSummary":"USACE completed a risk assessment of Knightville Dam in 2018 and has classified the risks associated with the dam as Moderate. This classification is based primarily on the large population living downstream of the dam that could experience catastrophic flooding in the very unlikely event of a failure of the dam. The dam significantly reduces the risk of flooding in the downstream communities. However, it does not entirely eliminate the risk. The most likely scenario that could result in downstream flooding from Knightville Dam would be an uncontrolled high-volume release of water from the dam's spillway during significant storm events. 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 during a flood event if the dam did not exist.\n\nThere are also two extremely unlikely, but far more devastating scenarios that would result in failure of the dam and downstream flooding: (1) A flood so large that the capacity of the dam to store water is exceeded and/or the spillway is compromised or (2) water seeping through the earth embankment resulting in voids in the dam as the soil erodes, potentially weakening the dam. Were either of these events to occur, an uncontrolled surge of water would flow out of the reservoir, flooding downstream communities. The towns of Knightville, Huntington, and Russell that are immediately downstream of the dam are the primary consequence centers. Towns with larger populations that are further downstream such as Westfield, West Springfield, and Agawam in Hampshire County, MA experience some danger in the event of the flood. Towns and cities including Hartford, New Britain, and New Haven, CT would also be impacted, but less so.\n\nEven though very unlikely, if any of the scenarios described above were to occur, the downstream floodwater would be swift and deep, 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 than flooding due to spillway discharges. In a worst-case scenario, you could see water varying up to the height of a two to eight story buildings.", "riskManagementMeasures":"No emergency situation currently exists at Knightville Dam. Should a crisis occur, we will use our expertise to quickly find a solution to resume operations. While we cannot completely eliminate risk, we are taking actions to further reduce the risks. We closely monitor the performance of Knightville Dam and will modify operations if we feel there is risk to the public. We will continue to work closely with state and local emergency managers, conducting emergency exercises, and incorporate any new information into our Emergency Action Plan for the dam. We will also continue our rigorous monitoring and surveillance of the dam, especially during high water events. We closely follow rainfall forecasts to determine when high water events may occur so that necessary flood warnings may be issued in a timely manner. USACE is undertaking additional study to further understand the risk associated with Knightville Dam, and what, if any, actions can be completed to reduce the risk.", "riverName":"WESTFIELD RIVER", "separateStructuresCount":0, "sourceAgency":"US Army Corps of Engineers", "spillwayTypeId":3, "spillwayWidth":400, "stateFedId":"MA00969", "stateRegulatoryAgency":null, "stateRegulatedId":0, "structuralHeight":150, "submitDate":"2023-04-18T12:23:32.861Z", "surfaceArea":1, "volume":1286000, "widthOfLocks":0, "secondaryWidthOfLocks":null, "yearCompleted":1941, "congDist":"Congressional District 01, Massachusetts", "city":"HUNTINGTON", "county":"Hampshire", "aiannh":null, "websiteUrl":"https://www.nae.usace.army.mil/Missions/Civil-Works/Flood-Risk-Management/Massachusetts/Knightville/", "coreTypeIds":"3", "damTypeIds":"5;8;9", "fedConstructionIds":"1", "fedDesignIds":"1", "fedFundingIds":"1", "fedInspectionIds":"1", "fedOperationIds":"1", "fedOtherIds":"1", "fedOwnerIds":"1", "fedRegulatoryIds":"1", "formerNames":null, "foundationTypeIds":"1;3", "nonFederalDamOnFederalId":0, "designerNames":"CENAE", "otherNames":"Dry Reservoir", "ownerNames":"USACE - New England District", "ownerTypeIds":"3", "primaryDamTypeId":5, "primaryOwnerTypeId":3, "primaryPurposeId":9, "purposeIds":"9", "dsacId":3, "femaRegion":"1", "lastEapExcerDate":"2024-04-05T12:00:00.000Z", "dataUpdated":"2025-03-17T12:00:00.000Z", "usaceDistrict":"New England District", "noConsequencesId":0, "secretaryAgricultureBuiltId":null, "nrcsWatershedAuthorizationId":null, "isAssociatedStructureId":"No", "fedRegulatedId":"Yes", "inundationNidAddedId":1, "damStatusId":2, "huc06":"010802", "doi_region":null, "doi_region_name":"North Atlantic-Appalachian", "doi_region_number":1 }, "id":8100021, "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/8100021?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/8100021?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr/items/8100021?f=html" }, { "rel":"collection", "type":"application/json", "title":"USACE Access2Water API", "href":"https://api.wwdh.internetofwater.app/collections/usace-edr" } ] }