9 Willapa River Flows : The Ultimate Concepts. Willapa bay (/ ˈ w ɪ l ə p ɑː /) is a bay located on the southwest pacific coast of washington state in the united states.the long beach peninsula separates willapa bay from the greater. If you live in lebam or pe ell you're less than 10 miles from willapa river.
Funding for this site is provided by the. Usgs & army corp of engineers station links. Maximum discharge along the river was observed at the with a streamflow rate of cfs.