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| Yukon NASQAN |
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Interactive Carbon Studies AK Water Office Overview Hypotheses Hydrology Site Qualification Sites Sample Collection Crew Rosters Personnel Training 2004 Summary 6/04 Log/Photos 8/04 Log/Photos 2003 Summary 6/03 Log/Photos 8/03 Log/Photos 2002 Summary 6/02 Log/Photos 8/02 Log/Photos Products/Biblio Related Links |
SitesFixed Station NetworkFive Fixed Station sampling sites on the Yukon River. These sites were sampled seven times each year (once under ice and six open water) to collect baseline data. Porcupine River near Fort Yukon, AlaskaExtensive permafrost and wetlands, water quality dataTanana River near Nenana, AlaskaSediment laden glacial meltwater, water quality data ,gaging stationYukon River at Eagle, AlaskaYukon River headwaters in Alaska, water quality data ,gaging stationYukon River near Stevens Village, AlaskaYukon River below Yukon Flats, water quality data ,gaging stationYukon River at Pilot Station, AlaskaYukon River near its mouth, water quality data ,gaging stationMainstemEight mainstem sampling sites on the Yukon River, in addition to the 5 fixed stations are listed below Yukon River at Whitehorse, Yukon TerritoryHeadwater reach of the Yukon River, uppermost well defined channel before transition to chained lake system, gaging stationYukon River at Carmacks, Yukon TerritoryChanneled flow for accurate discharge measurement, gaging stationYukon River above White River, Yukon TerritoryLast "sediment-free" site on the Yukon River, well defined channel, gaging stationYukon River above Circle, AlaskaLast site with well-defined channel before the Yukon River enters Yukon Flats, water quality dataYukon River at Joe Devlin Island, AlaskaChanneled flow for accurate discharge measurement, water quality dataYukon River at Timber Point, AlaskaChanneled flow for accurate discharge measurement, water quality dataYukon River at Ruby, AlaskaChanneled flow for accurate discharge measurement, water quality data, gaging stationYukon River at Kaltag, AlaskaChanneled flow for accurate discharge measurement, water quality data, gaging stationTributariesForty-three tributaries to the Yukon River and the research-based reason for selection are listed below. These tributaries were chosen based on data from samples collected by USGS volunteers (kayakers) floating the entire length of the Yukon River the 2000 open water season. Topographic maps were also used to delineate wetland and vegetation coverage, and drainage basin size. Atlin River, British ColumbiaThe uppermost reach of the Yukon River Basin (headwater sample)Nares River at Carcross, Yukon TerritoryIn the headwater reaches of the Yukon River basin, drains several large headwater lakesTakhini River near mouth, Yukon TerritoryDrains glaciers to the south, relatively high sediment load, gaging stationTeslin River near mouth, Yukon TerritoryLarge drainage basin, possible source of carbon, most runoff from snowmeltBig Salmon River near mouth, Yukon TerritoryLarge drainage basinLittle Salmon River near mouth, Yukon TerritoryLarge drainage basinNordenskiold River near mouth, Yukon TerritoryDrains large ares of wetlands, possible source of carbonPelly River at Pelly Crossing, Yukon TerritoryLarge drainage basin, relatively high sediment and DOC input, gaging stationWhite River, Yukon TerritoryLarge drainage basin, major tributary to the Yukon River, relatively large discharge, drains large glaciers in the Wrangall-St. Elias Mountains to the south, extremely high sediment input to the Yukon River, gage located where river crosses the Alaska HighwayStewart River, Yukon TerritoryLarge drainage basin, potential for large episodic discharge, mining activity, gaging stationSixtymile River near mouth, Yukon TerritoryMining activity, drains wetland areasKlondike River near mouth, Yukon TerritoryActive mining from both Klondike basin and Bonanza Creek basinKlondike River at gage, Yukon TerritoryActive mining, gaging stationFortymile River near mouth, Yukon TerritoryLarge drainage basin, drains wetland areas, black color and high DOC suggests a source of carbon, mining activityNation River, AlaskaSimilar in drainage basin size to Kandik River basin but very different geology, next basin over from Kandik, opportunity for process-based comparison studies, relatively high DOC, gaging station, water quality dataKandik River, AlaskaSimilar in drainage basin size to Nation River basin but very different geology, next basin over from Nation, opportunity for process-based comparison studies, Carbonate basin, relatively low DOC, gaging station, water quality dataCharley River, AlaskaLarge drainage basin, National Preserve, water quality dataCoal Creek, AlaskaHeavy historical mining activity, water quality dataWoodchopper Creek, AlaskaHeavy historical mining activity, water quality dataSheenjek River, AlaskaLarge drainage area, drains expansive wetlands in the Yukon Flats, potential large source of carbon, water quality dataBlack River Mouth, AlaskaLarge drainage area, drains expansive wetlands in the Yukon Flats, potential large source of carbon, water quality dataPorcupine River (9.5 miles upstream from mouth near Fort Yukon), AlaskaVery large drainage basin, major tributary to the Yukon River, relatively large discharge, much of basin underlain by continuous permafrost, water quality dataChristian River, AlaskaDrains wetland areas, water quality dataChandalar River, AlaskaLarge drainage basin, drains south side of the Brook's Range, basin is underlain by continuous permafrost, water quality dataUpper Mouth Birch Creek, AlaskaLarge drainage basin, potential large source of carbon, drains southern Yukon Flats wetlands, some historic mining activity, water quality dataLower Mouth Birch Creek, AlaskaLarge drainage basin, potential large source of carbon, drains southern Yukon Flats wetlands, some historic mining activity, water quality dataBeaver Creek, AlaskaLarge drainage basin, potential large source of carbon, drains southern Yukon Flats wetlands, some historic mining activity, water quality dataHadweenzic River, AlaskaLarge drainage basin, potential large source of carbon, water quality dataHodzana River, AlaskaLarge drainage basin, potential large source of carbon, water quality dataDall River, AlaskaLarge drainage basin, potential large source of carbon, water quality dataRay River, AlaskaLarge drainage basin, water quality dataHess Creek, AlaskaLarge drainage basin, drains wetland areas, potential large source of carbon, water quality dataTozitna River, AlaskaLarge drainage basin, water quality dataNowitna River, AlaskaLarge drainage basin, water quality dataMelozitna River, AlaskaLarge drainage basin, water quality data, gaging stationYuki River, AlaskaLarge drainage basin, water quality dataKoyukuk River, AlaskaVery large drainage basin, drains part of Brooks Range, historically underlain by continuous permafrost, water quality dataNulato River Mouth, AlaskaLarge drainage basin, water quality dataAnvik River Mouth, AlaskaLarge drainage basin, water quality dataBonasila River Mouth, AlaskaLarge drainage basin, water quality dataInnoko River near Mouth, AlaskaVery large drainage basin, potential carbon source, water quality dataAtchuelinguk River Mouth, AlaskaLarge drainage basin, water quality dataAndreafsky River Mouth, AlaskaLarge drainage basin, water quality data |
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