The Kuskokwim Bay and Kuskokwim River are known to undergo constant change from year to year. Depths on this chart reflect conditions surveyed in 2010. Extreme caution and continuous soundings are necessary to navigate these waters. The deep draft channel in the Kuskokwim River from Kuskokwim Bay Buoy 12 (5953'41.6"N., 16215'19.7"W.) northward to Bethel is marked by about 36 red or green foam buoys from June 1st through October 1st each year.
