CEDAR RAPIDS --  Get a head start on swimming season  this Memorial Day weekend with pre-season swimming at Bever Pool on Saturday, Sunday and Monday. Lap swims will be held from 11:45 a.m. to 12:45 p.m. each day and open swims from 1 to 6 p.m. on Saturday and Sunday and from 1 to 5 p.m. on Monday. Bever, Ellis and Jones Pools, and Cherry Hill and Noelridge Aquatic Centers will open for summer season swimming on  June 1 with lap swimming from 11:45 a.m. to 12:45 p.m. and open swimming beginning at 1 p.m. Check out the city's parks and recreation site for daily schedules. Cedar Rapids Parks and Recreation Summer Swim Passes are on sale until July 1. The passes are valid May 21 through September 3. Call Cedar Rapids Parks & Recreation at (319) 286-5731, for more information. Iowa City's outdoor pools open for the season Monday. Find more info on the city's website.