Nine miles east of Pasco  on the Snake River, Ice Harbor Lock and Dam is the first of four dams on the Lower Snake, with one of the highest single-lift locks in the world, rising 103 feet. Take a self-guided tour, watch the fish climb the ladders, or stop by the visitors center (9 a.m.–5 p.m. daily Apr.–Oct.).
The dam creates Lake Sacajawea, accessible for fishing, waterskiing, or swimming at Levey Park on the Pasco-Kahlotus Road on the lake’s west side, and Charbonneau and Fishhook Parks on the east side. Charbonneau Park (14 miles northeast of Pasco, 509/547-7783, Apr.–Oct., $18–22) and Fishhook Park (off Highway 124, May–mid-Sept., $14–22) have campsites with water, fire rings, and showers.
Make reservations for both these Army Corps of Engineers campgrounds at 518/885-3639, 877/444-6777, or www.recreation.gov .