Snow measurements at the two sites are taken at the beginning of each month, beginning Jan. 1. In May and June, the measurements are taken twice a month until the snow has melted.The Jan. 1 levels showed Summerland Reservoir was at 189 per cent of the historical average, while Isintok Lake was at 151 per cent of the historical average.
The melting snow fills Summerland’s reservoirs. However, if temperatures warm suddenly, there is a risk of flooding. In late April, the BC River Forecast Centre issued a high streamflow advisory for the Upper Fraser, Middle Fraser and portions of the Southern Interior. The warning came after meteorologists were calling for a sudden rise in temperatures in these areas.
While Summerland’s snow measurements have been higher than normal, most of British Columbia has had snow levels below normal levels. The April 1 Snow Survey and Water Supply Bulletin — the most recent provincial figures available — showed the average of all sites across the province was at 88 per cent of normal levels. The Upper Fraser West region and the Boundary, Okanagan and Nicola Regions were the only areas in the province with above-normal snow levels.
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