Columbia River Gorge: Scenic river canyon with swim spots in Oregon's Cascade Locks & Hood River.
Snake River: Tributary of Columbia, runs 1,078 mi from WY to WA. Swim spots: Blue Heart Springs (boat access) & Ritter Island in Thousand Springs State Park.
Merced River: Scenic glacial canyon in Yosemite with pools, rafting, and Cathedral Beach views of El Capitan.
Arizona's Horseshoe Bend: Instagram-famous spot with Colorado River's mighty beauty - red rocks, turquoise waters.
Oak Creek: Stunning stream in Oak Creek Canyon, AZ. Swim at Slide Rock or Grasshopper Point amid red rocks and clear water.
Truckee River flows 145 mi from Sierra Nevada through Lake Tahoe to Pyramid Lake. Popular for tubing in Tahoe City and whitewater park in Reno.
Frio River: Clear, cool Texas stream for tubing, surrounded by limestone bluffs, cypress trees; diverse lodging & rentals.
Arkansas' Buffalo River: undammed, scenic, 3 districts. Rapids to pools, perfect for kayaking, swimming, camping. Skull Bluff unique feature.
Ichetucknee River: Florida gem, 6-mile spring-fed beauty. Tubing, kayaking, wildlife. Blue Hole Spring: swim, dive, 72°F perfection.
Delaware River: Clean, great for swimming. Prime spot: Delaware Water Gap - trails, beaches, waterfalls.