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Report: Streamflow Trends in the Skeena Region
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Trends were calculated for 23 streamflow variables of interest, for up to 55 Water Survey of Canada hydrometric stations, and for four periods of varying length. Statistical significance was determined for each trend value, and a change point analysis was run on all time-series. Trends were plotted against basin area, basin median elevation, percent glaciated area of basin and median glacial elevation.
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Author: Jackson, Scott
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Date Published: Sep 2014
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Report ID: 43821
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Audience: Government and Public
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Trend for all 23 variables were mapped for each of the four periods analysed. Trends were not uniformly significant for all Skeena-region rivers considered, and we emphasize that site-specific evaluation is necessary.Some broad patterns were identified: Trends in average flows are somewhat mixed but show some tendency toward increases. There is a general tendency toward increasing winter minimum flow and declining summer flows. Most glaciated basins are experiencieng reductions in the median August flows. Evidence for a general trend toward earlier freshets.
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Report Type
Subject
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Water Information - Hydrometric / Hydrology |
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