The document provides an update on spring flooding in the Fraser River Basin in British Columbia. Snowpack levels were above normal in the Lower and Middle Fraser regions leading to an increased flood risk. River flows were predicted to peak between 10,000-11,000 cubic meters per second in the next 2-4 weeks. The Delta region's flood plan includes 4 stages of response depending on river levels measured at Mission, with stage 3 triggered at 7 meters and stage 4 if flooding or dike failure occurs. Local authorities have taken preparedness measures like dike inspections and stockpiling sandbags.

1. 2011 SPRING FRESHET UPDATE May 19, 2011

4. 2007 Snow Water Index

5. 2010 Snow Water Index

6. 2011 Snow Water Index (April 1)

7. 2011 Snow Water Index (May 1) Spuzzum Creek Green Mountain

10. Largest basin in BC ~233,000 km 2 44% 25% 16% Harrison and Chilliwack Rivers 15% Percent Contribution of Annual Runoff at Mission Hope Mission

11. Flow at Fraser River Hope Gauge River Flow May 9-May 16, 2011 River Flow Feb, 2009- May, 2011