Turkey Lakes Watershed - Stream Water Flow

Turkey Lakes Watershed - Stream Water Flow This dataset contains annual mean stream water flow/discharge data derived from daily means for headwater streams draining forested hillslopes measured at stream catchments C31, C32, C33, C34, C35, C37, C38, C39, C42, C46, C47, C49, and C50 in the Turkey Lakes Watershed, approximately 60 km northwest of Sault Ste. Marie, Ontario, Canada. This data set is recorded as annual mean flow by calendar year (January-December in litres per second), annual mean flow by water year (October to September in litres per second), and annual number of zero flow days by water year. Daily mean flows that were used to derive this data set were recorded from 1981-2012 by the Great Lakes Forestry Centre, and are reported for 1981-2011 due to some inaccuracies throughout the 2012 data. Hydrological gauging stations employ "flow-control" 120 degree V-notch weirs (catchments 31, 33, 34, 37, 39, 42, 46, and 47), 90 degree V-notch weirs (catchments 32, 35, and 49), and 60 degrees V-notch weirs (catchment 38) to facilitate monitoring of stream discharge. Water "stage" or depth within the structure (e.g. in the pool behind the weir notch) is automatically and continuously recorded by chart recorders (Leupold & Stevens A-71 SE Water Level Recorder) from 1981-2003. Capacitance rods (Trutrack WT-HR 1000) installed in stilling wells replaced the chart recorders over the period of 2002 to 2003 and were used until 2012. The capacitance rods logged data at 1 hour intervals for the majority of their use and then averaged to a daily rate. Manual stage measurements have been taken intermittently when synoptic water chemistry samples were taken throughout the years. Stage data are then converted to a continuous record of flow using the relationship between stage and discharge measurements. 2022-02-22 Natural Resources Canada jason.leach@canada.ca Nature and EnvironmentStream water flowTurkey Lakes WatershedLong Term StudyBiological diversityAquatic ecosystemsBoreal ecosystemsChemistryClimate changeEcologyEcosystemsEnvironmentEnvironmental adaptationEnvironmental impactEnvironmental indicatorsEnvironmental managementEnvironmental qualityEnvironmental sciencesForest managementForestryForestsFresh waterHydrologyInland watersLakesModel forestsNatural resourcesResearchResources managementScientific informationScientific researchSoilStreamsTerrestrial ecosystemsTreesTrendsWaterWater qualityWatershedsWetlands TLW_streamflow.csvCSV https://ftp.maps.canada.ca/pub//nrcan_rncan/Forests_Foret/TLW/TLW_streamflow.csv TLW_streamflow_metaEN.csvCSV https://ftp.maps.canada.ca/pub//nrcan_rncan/Forests_Foret/TLW/TLW_streamflow_metaEN.csv TLW_streamflow_metaFR.csvCSV https://ftp.maps.canada.ca/pub//nrcan_rncan/Forests_Foret/TLW/TLW_streamflow_metaFR.csv

This dataset contains annual mean stream water flow/discharge data derived from daily means for headwater streams draining forested hillslopes measured at stream catchments C31, C32, C33, C34, C35, C37, C38, C39, C42, C46, C47, C49, and C50 in the Turkey Lakes Watershed, approximately 60 km northwest of Sault Ste. Marie, Ontario, Canada. This data set is recorded as annual mean flow by calendar year (January-December in litres per second), annual mean flow by water year (October to September in litres per second), and annual number of zero flow days by water year. Daily mean flows that were used to derive this data set were recorded from 1981-2012 by the Great Lakes Forestry Centre, and are reported for 1981-2011 due to some inaccuracies throughout the 2012 data. Hydrological gauging stations employ "flow-control" 120 degree V-notch weirs (catchments 31, 33, 34, 37, 39, 42, 46, and 47), 90 degree V-notch weirs (catchments 32, 35, and 49), and 60 degrees V-notch weirs (catchment 38) to facilitate monitoring of stream discharge. Water "stage" or depth within the structure (e.g. in the pool behind the weir notch) is automatically and continuously recorded by chart recorders (Leupold & Stevens A-71 SE Water Level Recorder) from 1981-2003. Capacitance rods (Trutrack WT-HR 1000) installed in stilling wells replaced the chart recorders over the period of 2002 to 2003 and were used until 2012. The capacitance rods logged data at 1 hour intervals for the majority of their use and then averaged to a daily rate. Manual stage measurements have been taken intermittently when synoptic water chemistry samples were taken throughout the years. Stage data are then converted to a continuous record of flow using the relationship between stage and discharge measurements.

Data and Resources

Contact Information

Delivery Point: 1219 Queen Street East

City: Sault Ste. Marie

Administrative Area: Ontario

Postal Code: P6A 2E5

Country: Canada

Electronic Mail Address: jason.leach@canada.ca

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