Brief Thaw and Rain Expected to Produce Minor Runoff (flood bulletin, February 6-10, 2017)

Watershed Conditions Statement – Water Safety (Issued February 6, 2017 at 3:30 pm, valid until February 10, 2017)

Rainfall forecasts for tomorrow generally range from 20-35 mm; air temperatures are forecast to reach highs of approximately 7-9 degrees C late tomorrow and remain above freezing for approximately 24 hours. Snow monitoring data indicate approximately 15-25 mm of water in the existing snowpack. The snowpack has the potential to initially absorb much of the forecast rain, but may become saturated and begin releasing runoff.

The forecast above freezing temperatures and rain are expected to produce minor runoff across much of the watershed. Stream flow rates are expected to be similar to or less than the flows observed in last month’s runoff events. Peak flows are expected to occur overnight Tuesday and throughout Wednesday, with flows remaining elevated for the remainder of the week.

Temperatures are forecast to quickly return to below freezing on Tuesday night and remain below freezing until late in the week.

Municipal staff should monitor local drainage problem areas.

Residents are reminded to use extreme caution near all watercourses, and keep children and pets away. Ice is unstable and thin, streambanks are slippery and the water is very cold.

The UTRCA’s flood control reservoirs at Fanshawe, Wildwood and Pittock Conservation Areas are available to assist in managing runoff. UTRCA officials are monitoring the situation, and will report on any changing conditions if necessary.

See Thames River water level information —

Contact: Steve Sauder, Marketing Specialist

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