lies off the northwestern corner of Puget Island
at the mouth of the Cathlamet Channel
in Wahkiakum County
. The Columbia River
flows around the island. Directly across the channel from Ryan Island are the Hunting Islands
. Ryan Island is 1.1 miles long and is named for Martin Ryan, who acquired the island in 1917. In 1982 the U.S. Board of Geographic Names made official "Ryan Island".
Neither Ryan Island or Coffee Pot Island are depicted by on the 1841 map by Charles Wilkes, of the U.S. Exploring Expedition.
The 1948 NOAA Nautical Chart #6152, "Harrington Point to Crims Island", has only the label "marsh" on Ryan Island, and Coffee Pot Island is unnamed. Later charts list Coffee Pot Island as "Sand I.".
The name Coffee Pot Island appears on the 1982 NOAA Nautical Chart, however the name Ryan Island does not. The 1985 Chart has both names.
In 1982 the U.S. Board of Geographic Names made "Ryan Island" the official name for the island, after Martin Ryan who acquired the island in 1917.