01
Best overall pick
South Yuba River – Highway 49 Crossing
Near Nevada City • Granite-Lined River Beach And Swimming Holes • Local Favorite For Summer Days
Granite ledges and emerald pools create a classic Sierra river beach just outside Nevada City.
From Alleghany, many locals drop down Highway 49 to cool off along this stretch of the South Yuba. Smooth granite slabs, clear pools, and small gravel bars make it easy to find your own spot if you arrive early. Watch river levels in spring and aim for mid to late summer for relaxed swimming.
02
Warmest summer water
Schoolhouse Beach, Bullards Bar Reservoir
North Of North San Juan • Big Reservoir Cove With Boat-In Feel • Best For Warm Water And Boating
A broad cove on Bullards Bar with warm water, room to spread out, and easy lake access.
Bullards Bar runs surprisingly warm by midsummer, and Schoolhouse Beach is one of the easiest spots to access without a boat. There is room to spread out, plus quick access to coves and cliffy shoreline just around the bend. It is a solid choice when the mountain rivers still feel icy.
03
Top family choice
Scotts Flat Lake Day-Use Beach
East Of Nevada City • Family-Friendly Lakeside Beach • Best For Families With Kids
A compact, family-friendly swim beach on a tree-lined reservoir east of town.
Scotts Flat’s day-use area feels like a compact lakeside park, with a sandy strip, mellow water, and plenty of paddlers launching nearby. The vibe is friendly and low-key, and services in Nevada City are close enough for a post-swim meal. Expect crowds on hot weekends, but weekdays stay much quieter.
04
Great for groups and camping
Rollins Lake – Greenhorn Campground Beach
Near Chicago Park And Colfax • Lively Foothill Lake Beach By Campgrounds • Best For Social Lake Weekends
Busy but fun foothill lake beaches with swim areas right by campgrounds.
On the western edge of the foothills, Rollins Lake offers classic summer-lake energy—lots of families, floaties, and the hum of boats in the distance. The Greenhorn and other campground beaches give you easy water access plus shade and picnic tables. It is ideal for groups who want to swim, grill, and linger into the evening.
05
Best mountain-lake vibe
Donner Lake – West End Beach
Truckee • Classic Alpine Lake Beach • Great For Picnics And Paddleboards
A wide sandy beach on Donner Lake with mountain views and room for all-day lounging.
West End Beach delivers the full alpine-lake picture, with long views to Donner Summit and cool, startlingly clear water. Grassy areas, a broad sand strip, and rentals nearby make it easy to turn a short swim into a full day. Pair it with a stop in Truckee for coffee or dinner on the way back to Alleghany.