The River Forecast Center is continuing with a flood watch for the North Thompson River and tributaries, as well as the South Thompson River and Shuswap Lake.
The North Thompson River at Birch Island (08LB047) saw a large jump in river levels yesterday, and is currently flowing at 960 m3/s (20 to 50-year flow). This jump may be a gauge-related issue rather than a real increase in flows, and the station and downstream flows will be continued to be monitored closely.
The South Thompson River at Chase (08LE031) is at 1260 m3/s (approaching 20-year flow). At this point there is uncertainty over the timing of the peak of the South Thompson River. Typically the South Thompson River reaches peak levels towards the 3rd week of June, and the combination of a delayed onset to the snow melt season, and an unseasonably wet June may push the peak to the end of June or early July. The South Thompson River is expected to reach 20-year levels on Wednesday or Thursday.
Rainfall has eased or is easing in most areas; however, there is the potential for hot and then wet weather later this week and weekend, which may lead to further river concerns.
For current information on flooding: http://emergencyinfobc.gov.bc.ca/
For more information: www.pep.bc.ca/hazard_preparedness/flood_tips/Floodproof.pdf