Lake guide
Lake Del Valle
Livermore, Alameda County, CA
Overview
Lake Del Valle is a narrow, five-mile reservoir in the oak-covered hills south of Livermore, run by the East Bay Regional Park District as part of Del Valle Regional Park. It is a State Water Project reservoir that stores water for the South Bay Aqueduct and helps with Alameda Creek flood control, so it is managed as a quiet-water fishing and cruising lake rather than a ski lake.
What makes boating here different
The speed limit is 10 mph on the entire lake and personal watercraft are prohibited. The park also bans hydrofoils and e-foils. Boats of any size can use the public ramp, from kayaks and sailboats to motorboats, and the marina rents motorboats and patio boats. The lake has about 16 miles of shoreline, and water levels swing with the seasons, which creates navigation hazards.
Mussel rules matter more than usual
Every boat, kayak, canoe, inflatable and floating board must be inspected before launching. In September 2026 the district reported golden mussels at Del Valle, and it now applies a 30-day quarantine to boats launching here. The district exempts boats that launch only at Del Valle and keep their inspection band or pass intact. If you also boat other waters, plan around that quarantine.
Who uses it
Anglers dominate, chasing stocked rainbow trout in the cooler months and catfish, bass and panfish. Families come for the beach, rentals and the campground. Boats must be back at the ramp one hour before the park closes.
Getting there & access
By road
The park entrance is at 7000 Del Valle Road in Livermore, about 10 minutes from downtown. The public boat launch and the East Beach marina area are inside the park, so you pay at the entrance and again for inspection and launch.
Inspection before launch
All watercraft are inspected at the park before launching. Staff look for water in outboards, bilges, live wells and compartments, which are the most common reasons boats fail; the district suggests waiting at least five days after flushing your motor. A current registration is required for all motorized craft. Re-entry bands let you come back to the same lake without a full inspection each time.
Quarantine for visiting boats
Since the golden mussel detection announced in September 2026, boats launching at Del Valle face a 30-day quarantine from other district waterbodies. Boats that exclusively launch at Del Valle and keep their band or park pass intact are exempt.
On the water
Keep to 10 mph everywhere. Seasonal drawdown changes shoreline hazards, so go slowly in unfamiliar coves. Rental boats and every other boat should be back at the ramp an hour before the park closes.
Amenities
- Public launch ramp — Any size boat; 2 boarding floats and 1 carry-down walkway; 75 trailer spaces
- Marina and rentals — Motorboats and patio boats at the East Beach marina, (925) 449-5201
- Paddlecraft rentals — Seasonal kayak and paddleboard rentals at East Beach
- Pump-out — Sewage or bilge pump-out available per the DBW listing
- Store and snack bar — Convenience store, snack bar, fishing tackle, ice and a fish cleaning station
- Swimming areas — Swimming only in designated, lifeguarded areas
- Camping — Family campground with RV hookup sites, cabins and group camps; hike-in group camps
- Showers and restrooms — Available in the main park area
Rules & official resources
- Lake speed limit is 10 mph; personal watercraft are not allowed
- Hydrofoils and e-foils are prohibited by park ordinance
- All boats, kayaks, canoes, inflatables and floating boards must pass an invasive mussel inspection before launch; current registration is required for motorized craft
- Boats launching at Del Valle are subject to a 30-day quarantine because of the golden mussel detection, unless they launch only at Del Valle and keep their band or pass intact
- Swimming is allowed only in designated areas; watercraft must return to the ramp one hour before the park closes
- California Boater Card required for all operators of motorized vessels, regardless of age, since January 1, 2025
Common boat service needs here
Engine flushing and drying prep
Water left in outboards and live wells is the most common inspection failure here, and a golden mussel quarantine now applies. Owners who move between lakes lean on mechanics to flush, drain and dry engines properly before each trip.
Find Marine Mechanics & Engine Service providers →Hull and running gear cleaning
Owners who need to show a spotless, mussel-free hull and drive unit at inspection or before travelling to another lake use dive and hull-cleaning crews for boats kept in the water.
Find Bottom Cleaning, Hull Cleaning & Dive Services providers →Trailer and tow transport
With a 30-day quarantine on boats that visit other waters, owners who switch lakes often hire transport to move boats between waterbodies.
Find Boat Transport, Towing & Delivery providers →Fishing boat detailing
Fishing boats that spend the trout season on this lake pick up fish slime and sun wear. Regular washing and detailing keeps live wells and decks easy to inspect and dry.
Find Boat Detailing & Washing providers →Guides & FAQs
Nearby providers
No providers listed near this location yet — check back soon.
Sources
Last verified October 5, 2026