01
Best overall pick
Thermalito Afterbay, Monument Hill Beach
South Of Oroville At Thermalito Afterbay • Relaxed Reservoir Swim Beach • Best Overall Pick
A wide, gently sloping shoreline on Thermalito Afterbay that locals treat as their go-to summer swim spot.
Monument Hill pairs an easy-to-reach sandy beach with warm, generally calm water that feels made for casual swimming and floating. There’s plenty of room to spread out, a mix of sun and shade, and quick access from Gridley without winding backroads. Come here when you want that classic lake day without committing to a long drive or a full-on camping trip.
02
Most scenic day trip
Lake Oroville – Loafer Creek Recreation Area
East Of Oroville In The Sierra Foothills • Forest-Fringed Lake Beach • Best For Full-Day Outings
A sweeping Lake Oroville shoreline backed by oak and pine hills, with space for both quiet lounging and active lake fun.
Loafer Creek feels like a mini mountain getaway, with a broad pebble-and-sand shoreline and big views down the lake’s arms. It’s a smart pick when you want to mix swimming with short walks, shaded picnics, or launching kayaks and paddleboards. The developed facilities and campground nearby make it easy to turn a day on the beach into a relaxed overnight stay.
03
Closest structured swim area
Lake Oroville – North Forebay Recreation Area
North Oroville, Just Off Highway 70 • Developed Recreation Beach • Top Choice For Active Families
A compact, well-maintained swim lagoon and beach with grassy lawns and paths that feel more like a lakeside park than a wild shoreline.
North Forebay is ideal when you want an easy, no-fuss beach day with clear swim zones, nearby restrooms, and picnic tables within a short walk. The sheltered water is great for younger swimmers and casual paddlers, while the surrounding paths and lawns give restless kids space to roam. It’s one of the quickest ways from Gridley to organized lake access that still feels relaxed and uncrowded on weekdays.
04
Best camping-and-beach combo
Black Butte Lake – Buckhorn Recreation Area Beach
West Of Orland At Black Butte Lake • Open Countryside Lake Shore • Great For Camping Weekends
A laid-back lakeside beach tied to a roomy campground, set in rolling, open country that glows at sunset.
Buckhorn’s small swim beach sits steps from campsites and picnic spots, so you can wander between tent, grill, and water all day. The lake’s broad, open feel suits kayaks, small boats, and lazy float sessions, with big skies and birdlife adding to the sense of space. It’s a solid choice when you want more of a weekend retreat than a quick after-work dip.
05
Best low-key river spot
Sacramento River – Sycamore Grove Day Use Area
Near Colusa Along The Sacramento River • Shady Riverside Sandbar • Go-To Mellow Afternoon Escape
A tucked-away day-use area with trees, sand, and direct access to the Sacramento River’s flowing water.
Sycamore Grove trades big-lake expanses for a more intimate stretch of riverside, where you can wade, sit in the shallows, or just watch the current slide past. Tall trees and patches of sand create natural sitting areas that work well for low-key picnics and reading breaks. It’s best when river levels are moderate and you’re looking for a quieter, more natural-feeling alternative to the bigger reservoirs.