Lake Chabot This Fall: The Closures Are Uphill, and the Boat Rule Started in Livermore
October 15, 2026
October 15, 2026
If your usual fall routine starts at the Lake Chabot Road entrance and stays on the pavement by the water, very little about that walk changed this month. The gate closes earlier, and there's a warning sign at the shoreline. Almost everything else that changed in October 2026 is somewhere else: on the dirt trails in the hills of Anthony Chabot Regional Park, and at the inspection station, where the latest quarantine rule came from a lake in Livermore.
That's the useful way to think about this season. Closures and new rules are piling up on the hill trails and at the boat ramp. The paved shoreline is the steady part. Here's how each piece looks, starting at the water and working out.
The East Bay Regional Park District lists the West Shore and East Shore trails at Lake Chabot as 3.52 miles of paved trail combined. If you want something longer, the park map lays out an 8.5 to 9 mile lakeside circuit using East Shore, Honker Bay, Columbine, Bass Cove and West Shore trails. None of the October closure notices name those shoreline trails.
The Lake Chabot Marina & Café is still running on its posted schedule. The marina is open 7 a.m. to 4 p.m. and the café 7 a.m. to 6 p.m. Parking is $5 per vehicle. The park page lists rentals that include rowboats, pedal boats, kayaks, Duffy boats and electric-motor boats, along with tour-boat rides.
The real change on the shoreline is daylight. The park posts monthly gate hours. Closing time moves an hour earlier in each of September, October and November, then stays at 6 p.m. through February:
| Month | Gate hours |
|---|---|
| September | 6 a.m. to 8 p.m. |
| October | 6 a.m. to 7 p.m. |
| November and December | 6 a.m. to 6 p.m. |
| January and February | 6 a.m. to 6 p.m. |
Compared with the May-through-Labor Day schedule, when gates stay open until 9 p.m., a November visit gives you three fewer hours at the end of the day. If you're heading out after work, check the gate time against sunset.
Dogs are welcome on the loop, with conditions. Park District rules require dogs on leash on paved multi-use regional trails, in parking lots and staging areas, in picnic areas, and within 200 feet of trailheads and park entrances. Dogs may be off leash in qualifying open, undeveloped areas if they're under control, and the owner still has to carry a leash.
Head uphill into Anthony Chabot Regional Park and the map changes a lot. The district's park page, updated October 11, 2026, lists these:
The Big Bear closure is part of a bigger repair effort. At an August 12, 2026 Finance Committee meeting, district staff discussed FEMA projects tied to winter storm damage from 2017 and 2023 and named Big Bear and East Ridge trails at Anthony Chabot among them. In other words, the hill trails are still getting repairs from storms that are years old. Because the district calls the Big Bear dates tentative, check the Anthony Chabot park page before you plan a hike around Oct. 30.
The water side of the park has a change that has nothing to do with Castro Valley. On September 21, 2026, the Park District announced that golden mussels had been detected in Lake Del Valle at Del Valle Regional Park in Livermore. Any boat launched there now faces a 30-day quarantine before it can go into any other district waterbody. Pleasanton Weekly and the Mercury News both covered the detection the next day.
Before that announcement, Contra Loma in Antioch was the only district lake where golden mussels had been found, and boaters there were already under the same quarantine. The district says the species first appeared in North America at the Port of Stockton in October 2024. So if you paddle at both Del Valle and Lake Chabot, you now have to pick one lake for any 30-day stretch. Boats that launch only at Del Valle and come back with an intact Del Valle band are exempt from the quarantine at that lake.
Lake Chabot is one of five district sites where inspection is mandatory. The rule covers boats, kayaks, canoes, sailboats, inflatables and any kind of floating board. Here's how an inspection works, according to the district's invasive mussels page:
At Lake Chabot itself, the park page lists the mussel inspection fee as $5.00, plus a $3.00 launch fee for non-motorized vessels. You pay and get inspected at the Lake Chabot Marina & Café.
The second sign at the shoreline is about algae. The Lake Chabot page currently shows a Danger Advisory for blue-green algae and repeats that swimming is never permitted at the lake. The district's water quality pages don't say when the advisory was posted.
This matters most if you walk a dog on the loop. The Park District warns that dogs can be seriously harmed or die from exposure to the toxins. It says to keep pets from going into the water, drinking it, or touching algae or scum. Since dogs already have to be leashed on the paved trails, keeping them away from the water's edge means following a rule that's already in place.
Fishing is still allowed under the advisory, with precautions. The district advises avoiding unnecessary contact with the water, washing your hands after handling fish or gear, rinsing fillets in clean water, and throwing away the guts and liver. It also says annual testing hasn't found microcystins in fish flesh. The posted Danger notice also says small watercraft and float tubes aren't recommended. That affects kayakers just as the mussel inspections start applying to more boats.
As for trout, the district's Anglers' Edge page says rainbow trout stocking will return "this fall" once the water cools. No Lake Chabot planting date has been posted yet.
Beyond Lake Chabot, two summer standbys stay closed. The district says the Cull Canyon swim complex and the Don Castro swim lagoon will both reopen for the 2027 swim season. The pages don't give a reason for the closures or a reopening date.
The trail network connecting those parks is open. Five Canyons Open Space covers more than 300 acres and has five miles of trails linking toward Cull Canyon and Don Castro. Its park page shows no closure notice this fall. With Big Bear, Willowview and part of Redtail closed, Five Canyons is the obvious place to go for a dirt-trail hike this month without getting rerouted.
The newest addition is still ahead. The Hayward Area Recreation and Park District is planning Valley View Park, a 24-acre hillside site at 2811 Sydney Way between Stanton and Carlton avenues. The budget is $6.3 million and completion is estimated for spring 2027. The master plan includes a tot lot, adventure hill, multipurpose lawn, restroom, picnic areas, overlooks, a pump track, a dog area, a loop path and trails, built in phases. A Phase 1 project management proposal dated September 2025 scheduled bidding and contract award through Oct. 20, 2026, and construction from Oct. 21, 2026 through June 1, 2027. As of this week, HARD's project record still shows the status as "Construction Documents." The construction date is scheduled, not confirmed, and the documents found don't say which amenities are in Phase 1.
These programs are on the calendar for the rest of the year:
The district lists registration and details on each park's events page. Closure notices change often, so check them again before any trip into the hills.
Places like Lake Chabot's shoreline loop, Five Canyons and the future park on Sydney Way are part of what it means to own a home in Castro Valley. When it's time to figure out what your own address is worth, ask for a specific, documented number. Bert Aranda can put together that analysis for your home, with clear communication from the first walkthrough to the final number. Get a Free Home Valuation.
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