Photograph: King of Hearts, via Wikimedia Commons, CC BY-SA 3.0
Swimming Holes in the Bay Area
Five of the six freshwater swim areas within an hour of Oakland are run by one agency, which means one season calendar and one alerts page to check. The fees are the part that is not shared: two charge per person, three charge per vehicle. Here is what each one actually asks of you.
Access, season and fee details re-read against the managing agencies on August 24, 2026. Conditions change. Check the official links in the day of section before you drive.
Before you drive
- Places listed
- 6 freshwater spots, 5 of them designated swim areas
- 2026 lifeguard season
- Weekends and holidays only, May 16 to Sept 27, 11am to 6pm
- Typical cost
- $3 to $5 per person, or $5 to $10 per vehicle
- Dogs
- Not allowed at any East Bay Regional Park District swim area
Pick a spot
Every row names the agency that controls the water, what it costs, and the one thing most likely to end your trip early. The filters below narrow the list without reloading the page.
The closest real swim beach to Berkeley and Oakland, with lifeguards posted 11am to 6pm through the season and a per person fee rather than a parking fee.
Charged per person, so a full car costs more here than at the parking fee lakes. Dogs are barred from the water district wide.
The pick if you want changing rooms and showers rather than a towel in the car, and the only spot on this list you can reach without leaving Oakland.
Swimming is prohibited here November through March. Parking is charged April through October when the kiosk is staffed.
The big-water day out, and the only spot here where you can legally swim outside a designated area: north of the boat ramp, year round, with no lifeguard.
Highest parking fee on the list at $10, and the longest drive. Worth it for a full day rather than a quick dip.
A former gravel quarry with a bathhouse and refreshment stand, and the only spot here where the designated area stays open to swimmers year round at their own risk.
Pets and glass are barred from the sand. The bathhouse runs weekends in spring and autumn and daily in summer.
The South Bay option, with a staffed swim complex and a bathhouse at Horseshoe Lake, and the strictest cutoff on the list.
The strictest cutoff on the list: no entry after 5:30pm even though the swim area runs to 6pm, and no new entries at all once the facility hits capacity for the day. The kiosk is cashless, so bring a card, and the $5 parking fee sits on top of the per person swim fee.
The only walk in on this list and the only one with no fee to swim, reached by a six mile round trip on the Coast Trail from Palomarin.
No lifeguards and no toilets at the lake. Pets are prohibited on the Coast Trail and at the lake. The Park Service describes it as popular rather than designated, so treat the status as swim at your own risk.
Access, season, fees and parking
Five of these six are run by the East Bay Regional Park District, which sets one season calendar across all of them. That is the single most useful thing to know before planning a Bay Area swim day. The sixth, Bass Lake, is federal land with different rules entirely.
| Place | Managed by | Season | Cost | Permit or reservation | Getting in |
|---|---|---|---|---|---|
| Lake Anza, Tilden Regional Park | East Bay Regional Park District | Weekends and holidays May 16 to Sept 27, 11am to 6pm | $5 age 18 to 61, $3 age 2 to 17, $3 age 62 plus, free under 2 | None for general entry. Organised groups file a group swim notification | Drive up beach access off Lake Anza Road |
| Lake Temescal | East Bay Regional Park District | Weekends and holidays May 16 to Sept 27, 11am to 6pm. Swimming prohibited Nov through Mar | $5 per vehicle, charged April to October | None recorded | Drive up beach access with an adjacent accessible beach house |
| Del Valle Regional Park | East Bay Regional Park District | Lifeguards weekends and holidays May 16 to Sept 27, 11am to 6pm, at East and West beaches. Unguarded swimming year round north of the boat ramp | $10 parking. Cash, Visa, MasterCard and Discover accepted | None recorded for day swimming | Drive up, 7000 Del Valle Road, Livermore |
| Shadow Cliffs Regional Recreation Area | East Bay Regional Park District | Lifeguards weekends and holidays May 16 to Sept 27, 11am to 6pm. Designated area open year round at own risk otherwise | $5 parking. Cash, cards and tap to pay accepted | None recorded | Drive up, 2500 Stanley Boulevard, Pleasanton |
| Quarry Lakes Regional Recreation Area | East Bay Regional Park District | Weekends and holidays May 16 to Sept 27, 11am to 6pm, no entry after 5:30pm | $5 age 18 to 61, $3 age 2 to 17, $3 age 62 plus, plus $5 parking | None recorded | Drive up. Cashless kiosk, card or tap to pay only |
| Bass Lake, Point Reyes National Seashore | National Park Service, Point Reyes National Seashore | Year round. Park open 6am to midnight | No activity fee for the hike. General park entrance fees may apply | None required for day hiking | 6 miles round trip, moderate, from the Palomarin Trailhead parking lot |
Who decides, and what they actually published
Every water on this page, with the agency that controls it, the rule that agency published in its own words, and the date we read it. Nothing here is our opinion about whether a place is safe on the day you go. It records what the land manager permits, which is a different question and the only one a published rule can answer.
5 waters where the manager designates this as a swim area, 1 water where the manager allows entry and disclaims supervision. Sources last read 2026-08-24. 6 of 6 rows carry a verbatim sentence from the controlling authority.
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Lake Anza, Tilden Regional Park
East Bay Regional Park District
The manager designates this as a swim area
When lifeguards are not on duty, swim at your own risk within the swim area.
East Bay Regional Park District – Lake Anza at Tilden Regional ParkRead 2026-08-24T20:45:00-07:00
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Lake Temescal
East Bay Regional Park District
The manager designates this as a swim area
Lake Temescal has an accessible Beach House adjacent to the swim area which offers changing rooms and showers.
East Bay Regional Park District – Lake Temescal SwimmingRead 2026-08-24T20:45:00-07:00
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Del Valle Regional Park
East Bay Regional Park District
The manager designates this as a swim area
When lifeguards are not on duty, swimming is permitted only in a designated area, and at a swimmer’s own risk.
East Bay Regional Park District – Water SafetyRead 2026-08-24T20:45:00-07:00
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Shadow Cliffs Regional Recreation Area
East Bay Regional Park District
The manager designates this as a swim area
Lifeguards are on duty during the summer months, but swimming is allowed throughout the year in the designated area, at the swimmer’s own risk.
East Bay Regional Park District – Shadow Cliffs SwimmingRead 2026-08-24T20:45:00-07:00
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Quarry Lakes Regional Recreation Area
East Bay Regional Park District
The manager designates this as a swim area
Located in the Quarry Lakes Regional Recreation Area, the Horseshoe Lakes (Niles Beach) swim complex includes a sandy beach, a bathhouse, vending machines, and lifeguard service.
East Bay Regional Park District – Niles Beach at Quarry LakesRead 2026-08-24T20:45:00-07:00
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Bass Lake, Point Reyes National Seashore
National Park Service, Point Reyes National Seashore
The manager allows entry and disclaims supervision
Bass Lake is a popular, but unofficial, swimming spot; accessing the lakeside can be challenging and poison oak is common.
National Park Service, Point Reyes National Seashore – Hike to Bass LakeRead 2026-08-24T20:45:00-07:00
Reusing this table: it is compiled from public agency pages, each linked above. If you cite it, please link the agency page as well, because that page is the one that can change.
Where these sit on the map
The East Bay cluster sits within a 45 minute arc of Oakland. Bass Lake is the outlier, across the bay and then on foot.
What to check the morning you go
Season dates and fees are stable enough to plan around. Whether a specific beach is open on a specific morning is not. Bay Area lakes close on short notice for water quality and for harmful algal blooms, and the closure is usually posted the same day. Treat an advisory as normal rather than exceptional: when the five district pages were read on 24 August 2026, three of them clearly carried a caution advisory for blue green algae, Lake Anza stated it had none, and the Quarry Lakes panel did not state a status for its own water at all. That balance changes week to week, which is exactly why the live list below is the authority and this page is not.
- East Bay Regional Park District alerts and closures. The single page covering all five East Bay spots. It is the one to open first, and it is the reason this page will not tell you today’s status: on 24 August 2026 three of the five lakes carried a caution advisory and two did not, and that split moves week to week.
- Blue green algae status by lake. The district’s per lake advisory level. This is the page that closes a beach, so read it last.
- Point Reyes current conditions. Trail and road status for the Palomarin approach to Bass Lake.
Swimming here responsibly
- None of these places is described here as safe. Each entry states the status the managing agency publishes and the date it was checked. Open water carries risk that no page can remove.
- The East Bay Regional Park District tells swimmers not to swim in the lake for three days after a rainstorm. That single rule cancels more trips than any closure notice.
- There is no lifeguard outside the posted season and posted hours, even at the five designated swim areas. The district’s own wording is that when lifeguards are not on duty, you swim at your own risk within the swim area.
- The district prohibits alcohol, dogs, glass containers, fishing and barbecues at all of its swimming areas. Pets are also prohibited on the Coast Trail and at Bass Lake.
- Children twelve and under are not permitted in a district swimming area unless accompanied by an actively supervising person aged sixteen or older.
- Quarry Lakes and Shadow Cliffs are former quarries. Depth changes abruptly outside the marked area. Stay inside the buoys.
- Bass Lake has no toilets and no drinking water at the lake. Vault toilets are at the Palomarin Trailhead. Carry out what you carry in.
- If a lake is posted under a blue green algae advisory, that advisory is the authority. Swimming through it risks illness and undermines the monitoring that keeps these places open.
If your first choice is closed or full
Lake Anza is closed for water quality
Lake Temescal is 15 minutes away and is a separate water body with its own status.
Both appear on the same district alerts page, so you can check before leaving.
You arrive after 5:30pm
Skip Quarry Lakes, which refuses entry after 5:30pm, and try Shadow Cliffs or Del Valle.
Confirm closing time on the park page for the day you travel.
It is October and you still want to swim
Del Valle north of the boat ramp, or the designated area at Shadow Cliffs.
Both permit unguarded swimming outside the season. Lake Temescal prohibits swimming entirely from November through March.
You want a swim without a fee
Bass Lake at Point Reyes.
There is no activity fee, but it is a six mile round trip walk and general park entrance fees may apply.
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Common questions
- Where can you legally swim in the Bay Area?
- Five designated swim areas run by the East Bay Regional Park District: Lake Anza in Tilden, Lake Temescal in Oakland, Del Valle near Livermore, Shadow Cliffs in Pleasanton, and Quarry Lakes in Fremont. Bass Lake at Point Reyes National Seashore is a sixth freshwater option, but the Park Service does not designate it as a swim area.
- When does the Bay Area swim season start in 2026?
- The East Bay Regional Park District posts lifeguards on weekends and holidays from May 16 to September 27, 2026, and daily from June 1 to August 14. Outside those dates the beaches may still be open, but without supervision.
- How much does it cost to swim at a Bay Area lake?
- It depends on which fee model the park uses. Lake Anza and Quarry Lakes charge per person, at $5 for adults and $3 for children and seniors. Lake Temescal and Shadow Cliffs charge $5 per vehicle. Del Valle charges $10 per vehicle. Quarry Lakes charges both.
- Can you bring a dog to a Bay Area swimming hole?
- No. The East Bay Regional Park District prohibits dogs at all of its swimming areas, alongside alcohol, glass containers, fishing and barbecues. Pets are also prohibited on the Coast Trail and at Bass Lake in Point Reyes. Dogs are allowed elsewhere in most of these parks on a leash.
- Are there swimming holes near San Francisco you can walk to?
- Not within the city. The nearest freshwater swim area is Lake Temescal in North Oakland, which is a drive or a BART trip plus a walk. Bass Lake at Point Reyes is the only genuinely walk in option, and the walk is six miles round trip.
- Why do Bay Area lakes close in summer?
- Usually water quality, and most often a harmful algal bloom. Warm still water in late summer is when blooms are most likely. The East Bay Regional Park District posts these on one alerts page, which is why that link matters more than any other on this page.
- How long after rain should you wait to swim in a Bay Area lake?
- The East Bay Regional Park District advises not swimming in the lake for three days after a rainstorm. Runoff carries bacteria into the lakes, and the district applies this as standing guidance rather than a closure you will see posted.
Continue planning
Deep Arrival checks access, season and fee details against the agency that manages each place. Rules change without notice. The official links above are the authority, not this page.