Splash pads in Walnut Creek, California

Heather Farm Park is the East Bay's 102-acre superpark — equestrian arena, swim center, soccer fields, dog park, gardens, library, and a beloved spray pool that's the East Bay family rite-of-passage during the brutal inland-East-Bay summer. Free parking is generous, clean restrooms, and the variety means a half-day easily becomes a full one. Spray pool is sized for toddlers through grade-schoolers, gentle and well-shaded around the edges. Best on weekday mornings before camp crowds. Parent gotcha: NorCal wildfire smoke can shut outdoor play between July and October — check Bay Area AQI; California drought rules occasionally cut spray hours, posted on the city site. Inland East Bay heat regularly hits 95-plus. Pair with a Walnut Creek downtown lunch or a stroll through the park's rose garden after the splash session.