Del Valle West Swim Beach
Livermore, California · on Lake del Valle · Lake Del Valle State Recreation Area
Verified · 4 independent sources
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- $10
- SEASON
- Best in summer
About Del Valle West Swim Beach
Del Valle West Swim Beach is one of two developed, seasonally lifeguarded swim beaches on Lake Del Valle, a reservoir inside Del Valle Regional Park (East Bay Regional Park District) about 10 miles south of Livermore, California, and a reliable lake to swim in for the area. It is an official, fee-based swim area with posted rules and active water-quality monitoring, not an informal or hidden swimming hole.
Lake Del Valle is roughly 4,316-acre-park reservoir formed in 1968 by damming Arroyo Valle in a canyon of the Diablo Range foothills; the surrounding Del Valle Regional Park opened to the public in 1970 and also serves as the eastern trailhead for the Ohlone Wilderness Trail toward Sunol and Mission Peak Regional Parks.
Swimming at Del Valle West Swim Beach
The West Beach is one of two EBRPD-designated lake swim areas (paired with an East Beach), staffed by lifeguards 11am-6pm on weekends/holidays from May 16-Sept 27 and weekdays June 1-Aug 14. Outside those hours, unguarded swimming is permitted year-round in a zone north of the boat ramp. The park tests for blue-green algae weekly (April-October) and posts caution or danger advisories when blooms are detected, so swimmers should check current conditions before visiting.
How to get to this swimming hole
From I-580 in Livermore, exit at North Livermore Avenue and head south through town (it becomes South Livermore Avenue); about 1.5 miles past town, turn right on Mines Road and go about 3.5 miles, then continue straight onto Del Valle Road where Mines Road bears left; the park entrance (7000 Del Valle Road) is about 4 miles further.
Parking: $5 standard per-vehicle parking fee, or a $10 flat fee covering parking and boat launch on weekends/holidays from April through Labor Day; the Arroyo staging area offers free parking.
The walk in
No real hike here. The water is a short walk from where you park. This is a drive-up, designated swim beach with an adjacent parking lot; no trail hike is required. The exact walk distance from the lot to the sand is not specified in available sources, but park layout indicates it is short (parking lot fronts the beach).
Plan your visit
Bringing kids
OK with supervision
This is a designated, sandy swim beach, but lifeguards are only on duty 11am-6pm on a seasonal schedule (weekends/holidays May 16-Sept 27; weekdays June 1-Aug 14); outside those windows swimming is unsupervised. The park also posts recurring blue-green algae caution/danger advisories that specifically warn about risk to kids and pets, and shoreline water visibility can drop to as little as 1-6 ft after wind stirs up sediment, so adults should check current conditions and keep young swimmers in sight.
Parking
Paid, $5 standard per-vehicle park entry fee (general park page); EBRPD's swimming page separately cites a $10 parking fee at the swim-beach lots on weekends/holidays through Labor Day
The Arroyo staging area offers free parking as an alternative to the fee lots nearer the beaches.
Restrooms
Yes
Wheelchair-accessible bathroom buildings are located throughout Del Valle Regional Park; centralized toilet and shower facilities primarily serve the campground area. Exact restroom placement relative to West Beach itself is not specified in available sources.
Water clarity
Varies with season and flow
A February 2026 fishing report (Lake Monster) describes the reservoir's central/deep basin as clear (15-25+ ft visibility, deep blue water) while stained shoreline coves and arms drop to 1-6 ft visibility due to wind-stirred sediment and patchy algae, i.e. clarity right at the swim beach depends on wind and season. Separately, EBRPD tests weekly (April-October) for blue-green (cyanobacteria) algae and has posted caution/danger advisories in past years, which further reduces clarity and safety when active.
Hours
Park gate hours vary by month: Jan-Feb 7am-6pm, Mar 6am-7pm, Apr 6am-8pm, May-Labor Day 6am-9pm, post-Labor Day-Sept 30 6am-8pm, Oct 6am-7pm, Nov-Dec 7am-6pm, with a nightly curfew of 10pm-5am. Swim-beach lifeguards are on duty 11am-6pm on the seasonal schedule noted above; unguarded swimming is allowed year-round only in the zone north of the boat ramp.
On the water
Restrictions: Lakewide 10 mph speed limit; hydrofoils/e-foils are banned. All trailered/launched vessels require a mandatory quagga/zebra mussel inspection ($10 motorized / $5 non-motorized) plus a launch fee ($5 motorized / $3 non-motorized). Personal watercraft (jet skis) are not listed among permitted craft. Boats launch from the designated boat ramp/marina area, not from the swim beach itself, and every occupant needs a wearable Coast Guard-approved PFD.
Rental concessions operate seasonally out of the East Beach marina (about across the lake from West Beach but on the same reservoir): Outback Adventures handles kayaks/paddleboards, Rocky Mountain Recreation handles motorboats/patio boats/row boats. As of the sources checked, pedal boats and canoes were reported unavailable in the rental fleet due to limited dock space.
Rentals nearby
Motorboats (14'3" regular and deluxe), pontoon boats, "Sun Cruiser" patio boats, and row boats; also sells fishing licenses, bait, and tackle. Pedal boats and canoes are currently listed as unavailable due to limited dock space.
Prices: Regular boat (14'3", up to 6 people): $70/2 hrs, $30 each additional hour, $170 all day, $100 deposit. Deluxe boat: $115/2 hrs, $50/additional hour, $325 all day, $200 deposit. Pontoon/Sun Cruiser (up to 10 people): $165/2 hrs, $75/additional hour, $400 deposit. Row boats: $65, $22 deposit. Wednesday half-price rentals (4+ hrs) Oct 1-Apr 18; 40% senior discount Mon-Fri (excludes holidays).
Del Valle Marina, Del Valle Regional Park, 7000 Del Valle Road, Livermore, CA; phone (925) 449-5201 · Marina store hours vary seasonally, roughly 7am-5pm in winter to 6am-8pm in peak season; boat rentals run from sunrise until 1:45-4:45pm depending on the month. Camp store is closed Nov-Feb.
Single, double, and triple recreational kayaks; single sea kayak; stand-up paddleboards. Includes PFD(s), paddle(s), and backrests for sit-on-tops.
Prices: Single recreational kayak $20/hr; double $35/hr; triple $45/hr; single sea kayak $30/hr; extra paddle $8; extra life jacket $6. One-hour minimum, prorated in 15-minute increments.
Del Valle Regional Park, 7000 Del Valle Road, Livermore, CA (East Beach area); phone (925) 245-9500 · Seasonal, late May through late September: May 23-June 18 weekends only 10:30am-5pm; June 19-Aug 7 Fridays 11am-5pm plus weekends 10:30am-5pm; Aug 8-Sept 27 weekends only 10:30am-5pm.
What regulars say
A r/Livermore thread on swimming at Lake Del Valle outside the designated beaches notes that per park rules "you can swim (at your own risk) north of the boat ramp, even outside of the beach swimming areas" - i.e. locals confirm the year-round unguarded zone is genuinely used, not just a technicality. Broader visitor reports elsewhere describe the setting as feeling like a lakeside resort in a valley, with two lifeguarded beaches; specific first-hand notes on crowding or beach surface at West Beach were not found in accessible sources.
Backstory
Lake Del Valle was created in 1968 when a dam impounded Arroyo Valle as part of California's State Water Project/South Bay Aqueduct system; the surrounding regional park, opened to the public in 1970, is operated by the East Bay Regional Park District (established 1934).
Del Valle West Swim Beach: FAQ
Does Del Valle West Swim Beach charge a fee?
$10 parking fee at the swim beach lots (per EBRPD's swimming page); boat launch/trailer fee $3-5; cash, Visa, MasterCard, and Discover accepted.
Is Del Valle West Swim Beach kid friendly?
This is a designated, sandy swim beach, but lifeguards are only on duty 11am-6pm on a seasonal schedule (weekends/holidays May 16-Sept 27; weekdays June 1-Aug 14); outside those windows swimming is unsupervised. The park also posts recurring blue-green algae caution/danger advisories that specifically warn about risk to kids and pets, and shoreline water visibility can drop to as little as 1-6 ft after wind stirs up sediment, so adults should check current conditions and keep young swimmers in sight.
Do I need to hike to reach Del Valle West Swim Beach?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for Del Valle West Swim Beach?
The Arroyo staging area offers free parking as an alternative to the fee lots nearer the beaches.
Can I bring a kayak or paddleboard to Del Valle West Swim Beach?
Rental concessions operate seasonally out of the East Beach marina (about across the lake from West Beach but on the same reservoir): Outback Adventures handles kayaks/paddleboards, Rocky Mountain Recreation handles motorboats/patio boats/row boats. As of the sources checked, pedal boats and canoes were reported unavailable in the rental fleet due to limited dock space.
When is the best time to visit Del Valle West Swim Beach?
Lifeguards are on duty seasonally (weekends/holidays May 16-Sept 27 and weekdays June 1-Aug 14, 11am-6pm), making summer the primary supervised swim season; unguarded swimming is allowed year-round north of the boat ramp.
What are the rules at Del Valle West Swim Beach?
Posted lake rules: keep water out of your mouth, shower and dry off immediately after swimming, avoid swimming for 3 days after rainstorms, and keep dogs out of the water at the beaches. Lakewide boat speed limit is 10 mph, hydrofoils/e-foils are banned, and mandatory invasive-mussel inspections apply to trailered boats.
What water body is Del Valle West Swim Beach on?
Del Valle West Swim Beach is on Lake del Valle, a natural lake verified in USGS hydrography data.
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