01
Best all-around pick
Contra Loma Regional Park Swim Lagoon
Antioch Foothills • Lifeguarded Reservoir Beach • Best For Families And Casual Swimmers
A managed swim lagoon with a sandy shoreline, gentle water, and shaded picnic areas about a half-hour from Knightsen.
Contra Loma’s swim lagoon feels tailor-made for East County families who want a safe, close-to-home beach day without ocean currents. In summer, lifeguards watch over a roped-off swim area, and the surrounding lawns and trees make it easy to claim a shady base camp. A loop of easy trails around the reservoir gives you a way to stretch your legs between swims.
02
Best for riverside camping
Sandy Beach County Park
Sacramento River At Rio Vista • Relaxed Riverside Strand • Best For Camping By The Water
A broad, true-sand beach on the Sacramento River with a mellow campground and classic Delta views.
Sandy Beach lives up to its name, with a surprisingly wide stretch of sand where locals spread out towels, toss a frisbee, and wade into the shallows when the river is calm. The adjacent campground lets you wake up right by the water, making it a nice weekend escape that still feels close to home. Expect afternoon breezes, big-sky sunsets over the levees, and a low-key, friendly crowd.
03
Best for wind sports
Sherman Island County Park
Delta Near Sherman Island • Windy Watersports Beach • Top Spot For Kite- And Windsurfing
A blustery Delta shoreline famous for strong afternoon winds, small rigging beaches, and nonstop action on the water.
Sherman Island is where you go to watch or join some of the region’s most serious wind and kitesurfers carving across the chop. The shoreline here is more rugged than resort-like, with compact rigging areas, tidal shallows, and powerful currents that demand experience if you’re getting in. Even if you stay on land, it makes a dramatic day out from Knightsen—bring binoculars, a windbreaker, and a camera.
04
Best multi-cove Delta stop
Brannan Island State Recreation Area
Delta Between Rio Vista And Isleton • Laid-Back Recreation Beach • Best For Boaters And Paddlers
A maze of inlets and small shoreline pockets where you can launch a craft, cool off in the water, and linger under riverside trees.
Brannan Island strings together sheltered coves, boat ramps, and picnic sites that make it easy to mix a bit of swimming with fishing or a mellow paddle. The feel is classic Delta—low-lying islands, tule reeds, and powerboats cruising past while you hang out on the bank. It’s a good choice when your group includes a mix of anglers, boaters, and kids who just want a place to splash around.
05
Best classic Bay beach day
Robert W. Crown Memorial State Beach
Alameda Shoreline • Classic Bayfront City Beach • Best For Long Walks And Skyline Views
A wide, gently sloping sandy beach with shallow Bay water, a long promenade, and sweeping views of the San Francisco skyline.
When you’re craving a more traditional ocean-style beach day, Crown Beach in Alameda is the closest big-sand option that still feels manageable from Knightsen. The water stays shallow far from shore, so kids can wade while adults stroll the promenade or settle in for a full afternoon on the sand. Cafés and shops along nearby Park Street turn it into an easy all-day outing, especially if you time your visit for a clear, breezy evening sunset.