Tuesday 10 May 2011

Snowmelt Season

April 27 (flow stage = 74cm, snow depth = 30cm)

Usually March, April and May is snowmelt season for the Takiya River catchment. However, this year snowmelt season is about a month later than usual due to record snowfalls during the winter and cold spring temperatures. The photo above shows the main gauging station, and most of the flow in the river is coming from snowmelt, plus some overnight rain. About 30cm depth of snowpack remains under the cedar trees. Compare this photo with those taken on my earlier field trips this spring. Note how the snowpack is receeding on the river banks, and how the colour of the water changes as more sediment is carried by the rising waters.

April 15 (flow stage = 69cm)

April 6 (flow stage = 51cm, snow depth = 95cm)

March 28 (flow stage = 44cm, snow depth = 99cm)

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