Per City of Portland Parks website

Size in acres 104.69

History Kelley Point Park is named after New Englander Hall Jackson Kelley (1790-1894). The park was owned by the Port of Portland for much of the 20th century, and to keep the Willamette and Columbia Rivers open to barge transport, the Port covered the flood prone peninsula with tons of dredge material from the bottoms of these rivers. Kelley Point Park officially became a Portland park in 1984. 

citations & references:

• First listed in Damron’s Men’s Travel Guide 2000 Under: Cruisy Areas

• listed in Damron’s Men’s Travel Guide 2010 Under: Cruisy Areas