Salmon pass through a fish ladder Tuesday at Bonneville Dam as they make their way up the Columbia River. Migrating salmon — and other fish — can be seen through a fish ladder viewing window at the Washington Shore Bonneville Dam Visitor Center. September is the prime month to spot salmon as they make their way up the ladder. On Monday, more than 22,000 chinook were counted at the dam, along with 3,700 coho. The visitors center, which includes the fish ladder and exhibits about hydroelectricity, is open from 9 a.m. to 5 p.m. daily. Visit www.nwp.usace.army.mil/bonneville for more information.