Temescal Regional Recreation Area

🏊Swimming at Temescal Regional Recreation Area

Swimming is confined to a designated, lifeguard-monitored area off a man-made sandy beach; the lake is shallow by reservoir standards (about 20 feet at maximum depth, having filled in with sediment from an original 80 feet), suits casual swimmers, families and lap swimmers more than divers, and one local account recommends goggles for visibility and warns the beach sand turns tar-like when dug into.

📍How to get to this swimming hole

The park is located next to the junction of Highways 24 and 13 in the Oakland hills; the swim beach and Beach House sit on the lake's northeastern shore, reachable directly from the park's parking areas without a hike.

Parking: On-site paid parking, $5 per vehicle April through October (Visa, MasterCard, Discover, or tap-to-pay accepted); limited free street parking exists nearby but fills quickly on weekends.

🥾The walk in

No real hike here. The water is a short walk from where you park. The swim beach and Beach House sit directly off the north parking lot on the lake's northeastern shore -- it's a short, flat walk from parking (well under 5 minutes), no trail hike needed. A separate ~1-mile East Shore/West Shore loop trail circles the lake for those who want to walk further, but it is optional and not required to reach the swimming area.

💬What regulars say

Visitor reports: one swimmer called Lake Temescal 'great! Especially early in the season since they sometimes have to close due to algae,' and suggested goggles help with visibility. A longtime local swimmer wrote 'I've been swimming in Lake Temescal since childhood. It is not a dirty lake and a thriving habitat for local wildlife,' adding that the small lake warms up noticeably as the season goes on, making mid-to-late summer the warmest swimming window. Both flag algae-related closures as the main recurring downside.

📜Backstory

The reservoir was created in 1868 when Temescal Creek was dammed to supply East Bay drinking water, with much of the labor performed by Chinese immigrants; the dam is 600 feet long, 16 feet wide, and rises 105 feet above the creek. The shores attracted bohemian artists and writers in the late 1800s, and the park opened to the public in 1936 as one of the first three East Bay Regional Parks.