(Portland, OR)  --  The body of a missing swimmer has been recovered from the Columbia River in North Portland Harbor.  The Multnomah County Sheriff's Office says crews pulled the body of 35-year-old Kevin McDowell from the water yesterday morning.  Police say he jumped into the water from a boat near Lemon Island on June 27th to help a woman who was struggling to swim.  The woman was able to get to safety, but McDowell didn't resurface.