Flood in Kuskokwim Delta, Alaska

Ice jam flooding had impounded water at a jam located below Kalskag, and the flooding had closed the road connecting Upper and Lower Kalskag impacting transportation in the area. Additional jams were backing up flows along Mud Creek which was impounding water surrounding Kalskag. Mud Creek backup would impact the gas station which had to cut power and close.

Ice jam flooding along the Kuskokwim River moved through the lower areas of the basin beginning May 2 and continuing though May 14 for several communities along the Kuskokwim River. Flood watches were issued starting May 2 for the upper reach of the Kuskokwim River zone, progressing downstream ahead of flooding through May 12. Ice jam flooding moved slowly downstream based on river ice concentration and temperatures, with impacts varying depending on the residence time of the jam below a community and amount of impounded water.