The BC River Forecast Centre is issuing a High Streamflow Advisory for the East and West Kootenays.
A significant upper-low pressure system is developing through southern BC and Washington, and is expected to bring an eastern flow of moist air through the Kootenays over the next several days. Heavy rain is expected over Tuesday evening to Wednesday, and another episode over the Thursday to Friday period. Rainfall amounts over this period may be in excess of 150 mm.
River levels through the Kootenays are expected to rise rapidly throughout Wednesday, with the potential for further rises later in the week. The areas of highest concern at this point are through the East Kootenay, including the Elk River, where rainfall amounts are forecast to be the greatest. Given the current rainfall forecasts, flood conditions may occur.
The River Forecast Centre will continue to monitor conditions and will provide updates as conditions warrant.
Here are a couple of Elk River images from the flood of 1916:
