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      <marc:subfield code="a">Choles, James, </marc:subfield>
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      <marc:subfield code="a">An overview of streamflows and lake levels for the Peace, Athabasca and Slave River basins / </marc:subfield>
      <marc:subfield code="c">prepared for the Northern River Basins Study under project 5314-E1 by James Choles, William Aitken and Andy DeBoer ; collaborator, Leah Watson.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Edmonton, Alberta : </marc:subfield>
      <marc:subfield code="b">Northern River Basins Study, </marc:subfield>
      <marc:subfield code="c">April 1996.</marc:subfield>
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      <marc:subfield code="c">©1996</marc:subfield>
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      <marc:subfield code="a">Northern River Basins Study project report, </marc:subfield>
      <marc:subfield code="y">1192-3571 ; </marc:subfield>
      <marc:subfield code="v">no. 146</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 25).</marc:subfield>
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      <marc:subfield code="a">"This report provides a summary of flow and lake level information for water bodies in the Peace, Athabasca and Slave river basins to provide a hydrologic background far many of the other reports published by the Northern River Basins Study. The trends in river flows for both the main stems and significant tributaries, and for lake levels, for both natural and regulated conditions were examined. Ice processes were discussed along with some of the environmental effects. Regulation on the Peace River has altered the hydrologic regime of both the Peace and Slave Rivers, as well as the ice regime on the Peace Riveras for downstream as Fort Vermilion. Lake Athabasca and Great Slave Lake levels have also been affected by the changes in the Peace River flow regime"--Report summary.</marc:subfield>
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      <marc:subfield code="a">Issued also in print format.</marc:subfield>
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      <marc:subfield code="a">Streamflow</marc:subfield>
      <marc:subfield code="z">Peace River Watershed (B.C. and Alta.)</marc:subfield>
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      <marc:subfield code="a">Streamflow</marc:subfield>
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      <marc:subfield code="z">Athabasca River Watershed.</marc:subfield>
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      <marc:subfield code="a">Streamflow</marc:subfield>
      <marc:subfield code="z">Slave River Watershed (Alta. and N.W.T.)</marc:subfield>
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      <marc:subfield code="a">Cours d'eau</marc:subfield>
      <marc:subfield code="x">Débit</marc:subfield>
      <marc:subfield code="z">Paix, Bassin de la rivière de la (C.-B. et Alb.)</marc:subfield>
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      <marc:subfield code="a">Cours d'eau</marc:subfield>
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      <marc:subfield code="z">Athabasca, Bassin de l'.</marc:subfield>
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      <marc:subfield code="a">Cours d'eau</marc:subfield>
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      <marc:subfield code="z">Esclaves, Bassin de la rivière des (Alb. et T.N.-O.)</marc:subfield>
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      <marc:subfield code="a">Northern River Basins Study (Canada)‏, </marc:subfield>
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      <marc:subfield code="t">An overview of streamflows and lake levels for the Peace, Athabasca and Slave river basins / </marc:subfield>
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      <marc:subfield code="a">Northern River Basins Study project report ;</marc:subfield>
      <marc:subfield code="v">no. 146.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.883506</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/r71/R71-49-3-146-eng.pdf</marc:subfield>
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