Alerts and Closures

Expect delays on Iron Horse Trail - Concord

Expect delays on the Iron Horse Regional Trail in Concord, south of Willow Pass Road on May 30, 2024. The Central Contra Costa Sanitation District will repair its system in the area. Please contact Chris Carpenter at (925) 229-7316, or email ccarp@centralsan.org with any questions. 

Walnut Creek Channel construction in Concord

The section between Diamond Blvd and Concord Blvd will be closed from June 10 to October 31, 2024 due to a Contra Costa County Flood Control construction project in the Walnut Creek Channel. Please visit the Contra Costa Public Works' project website for more information. 

Briones Pilot Project Community Check-in Meeting

We Want to Hear From You
Community Check-in Meeting | Sat., June 15, 10 AM  More Info

Damaged Trail
The intersection of Briones Crest Trail/ Mott Peak Trail and Briones Crest Trail/ Lagoon Trail is currently damaged but passable with care. Barricades and cones have been posted on both ends of the fire trail to warn park users. Please follow all signage and use caution. Updated June 01, 2024.

Lafayette Ridge Staging Area parking Lot Open

The Lafayette Ridge Staging Area parking lot is open to the public. The restroom, drinking fountain, and lighting improvements are not available as we are still working on the improvements. We expect the construction to be completed around August.

Greathouse Visitor Center and Mine Tours
Greathouse Visitor Center reopens and resumes regular schedule on Sunday May 5.
Mine Tours will resume on Saturday May 18. Advance registration recommended. Registration opens on Tuesday, May 14, 2024. Register by phone or online HERE. Updated June 01, 2024.

Fishing Pier Closure

Doolittle fishing pier is currently closed to the public for safety reasons.

Flooded Trail
Whispering Creek Trail between the foot bridge and the lake trail is flooded and will be closed until further notice.  Updated June 01, 2024.

Picnic Site Closure

Camp Acacia Picnic Site is closed for renovation until 7/1/2024.

Trail Closure - Pine Tree Trail

Due to storm damage, the Pine Tree Trail in Tilden Nature Area is closed until further notice.

Boat Launch will be closed for boats

EBRPD staffs will install a new water pump in the Contra Loma Reservoir on June 12. The boat launch will be closed to boats, but will not affect kayaks, float tubes, rafts, and canoes.

Trail Closure Notice

Sections of the following trails are temporarily closed to safeguard critical habitat in the area:

• Back Ranch Loop Trail - Closed south of the intersection of Chorus Frog Trail
• Goldfinch Trail - Closed south of intersection of Chorus Frog Trail
• Chorus Frog Trail - Closed east of intersection with Tree Frog Trail

Closure is in effect until August 31, 2024.

Trail Detours and Traffic Delays in Tilden South Ecological Restoration Area

The Regional Parks Fire Department will be performing a fuels reduction project along South Park Drive starting Monday June 10 through early August. Equipment and crews will be operating in and alongside the roadway to remove dead trees between 8am-4pm Monday through Friday. This will require a single lane closure and delays lasting up to 10 minutes. Portions of the Vollmer Peak Trail may be closed during work hours, but detours will be available. All District trailheads and facilities will remain OPEN during this project. 

For more information visit our Fuels Management Update page.

Isherwood Staging Area

The drinking fountain at Isherwood Staging Area along the unpaved trail is currently unavailable due to construction.

Temescal Swim Season Postponed

The 2024 swim season is postponed due to cyanobacteria toxins at a Danger level. 

Trail Detour between Dougherty Rd and Dublin-Pleasanton BART Station

Until further notice, a temporary detour of the Iron Horse Regional Trail between Dougherty Road and the Dublin-Pleasanton BART Station will be in place. View Map.

The Scarlett Drive roadway project will widen and extend existing Scarlett Drive from Dougherty Road to Dublin Boulevard and provide a new segment to the Iron Horse Regional Trail. The project will require the temporary detour of the trail while roadway and utility improvements are made to Scarlett Drive. The City of Dublin will also be constructing a pedestrian and bicycle bridge connecting the Iron Horse Regional Trail on the north and south sides of Dublin Boulevard at the intersection of Scarlett Drive. The bridge will provide access to Don Biddle Community Park, which is located on the north side of Dublin Boulevard adjacent to the Iron Horse Regional Trail.  

The pedestrian bridge project will provide a safer and easier crossing for trail users and facilitate improved traffic flow along Dublin Boulevard by providing a grade-separated bridge crossing over Dublin Boulevard for pedestrians, bicyclists and BART commuters. The terminus of the southeasterly side of the bridge crossing will lead directly to the Dublin-Pleasanton BART Station. For more information on the Iron Horse Trail pedestrian overcrossing please visit the City of Dublin website located at https://dublin.ca.gov/2073/Iron-Horse-Trail-Dublin-Boulevard-Overcr.

Trail Closure Notice

Woodrat trail is closed due to a culvert failure between Edwards Creek and Edwards Loop Trails. Trail will need to remain closed until repairs are performed.

Bathroom Construction Delay

Construction of replacement bathroom facilities at Crown Beach along Shoreline Drive at Grand Street has been delayed. The Park District is working with the City of Alameda to restart construction as soon as possible.

Shadow Cliffs Arroyo Water Quality Conditions

• There are no current advisories for blue-green algae posted at Shadow Cliffs Arroyo. See the Blue-Green Algae Information page for additional details.

Seasonal flooding along the Wildcat Creek Trail in Richmond

Approximately 120 feet of the Wildcat Creek Trail, along the Richmond Parkway undercrossing, is currently experiencing seasonal flooding. Flooding in this area is expected to remain during the wet winter months through into late spring/early summer 2024. 

Trail Closure - Wildcat Creek Trail

Due to culvert damage, the Wildcat Creek Trail is closed between Jewel Lake and the Wildcat Canyon Regional Park gate.

Del Valle Entry Fee Pilot Program (Weekends & Holidays Only)

Beginning Memorial Day weekend, there will be a flat $10 fee on weekends and holidays to enter Del Valle Regional Park, which will cover park entry, parking, trailers, and dogs. Fishing and Quagga inspection fees can be purchased at the marina area. The pilot project is testing more efficient ways to facilitate park entry due to congestion on spring and summer weekends and holidays. The $10 flat entrance fee does not apply to Regional Parks Foundation members, who receive free park entry/parking at all Regional Parks as part of their membership benefits. More Info | Provide Feedback

To help expedite entry, a limited number of park entry passes will be available for pre-purchase. As vehicles approach the kiosk, there will be a separate line for pre-paid parking, visitors with camping reservations (not picnic reservations), staff members, and residents/neighbors.

Trail Closure

Upper Meadowlark Trail is closed due to storm damage.

Trail Closure
The Shady Glen Trail is currently closed. Updated June 01, 2024.

Trail Closures
Due to previous winter storm damage, the Park is not accessible via Redwood Rd from I-580 westbound in Castro Valley. Access via Redwood Rd from Skyline Blvd.
Trails Closed:

• Brandon Trail Stone Bridge to Horseshoe Trail - trail impassable due to a failed culvert
• Redtail Spur Trail
• Willowview Trail
• Deer Canyon Trail

Trail Closure

The San Francisco Bay Trail between Pinole Shores Staging Area and Bay Front Park will be closed at the end of May 2024 to repair 100-foot section of trail that was damaged by a landslide during the 2022-2023 winter storms. Construction is scheduled to take approximately two months.

Thurgood Marshall Regional Park

Thurgood Marshall Regional Park is closed with no public access, however, there are occasional public tour events. Check for upcoming tours or events at Calendar of Events - Thurgood Marshall.

Iron Horse Trail Overcrossing Construction - San Ramon

The north side of the Iron Horse trail adjacent to Bollinger Canyon Road is closed during the construction of an overcrossing, a pedestrian/bike detour is in place. View Map. (At a later date, closure of the south side of the Iron Horse trail adjacent to Bollinger Canyon Road will also be implemented; a pedestrian/bike detour will be in place.)
The overcrossing project began on July 31, 2023, and is expected to take 18-24 months to complete. View Project information.

Parking Notice

Due to high visitation, Castleridge Trailhead parking may be limited. Consider visiting at less busy times or using the now-reopened Foothill Staging Area or new Tyler Ranch Staging Area.

Del Valle Regional Park is open with limited amenities

• The Marina Store is open daily with modified hours for boat rentals on a first-come, first-served basis. Rentals for motorboats, patio boats and canoes can be completed between 6am and 3:45pm; boats must be returned by 6pm. The store is open between 6am - 8pm to purchase baits, tackles, license sales, snacks and drinks.
• The Camp Store is now opened on Friday 1:30PM-8PM; Saturday 8AM-8PM; Sunday 8AM-3PM. Starting 5/27, Monday-Saturday 8AM-8PM and Sunday 8AM-3PM.
• Use caution on storm-damaged trails. Signs are posted.
• Construction equipment/noise may be present during normal working hours.

The following amenities remain closed:

• The Visitor Center is currently closed.
• The Swim Beach Food Concession remains closed until further notice.
• Entire Campground is opened with the exception of a few sites located in Lower Phase 2. These sites will remain closed until repairs are made. Please contact Reservations if you have questions about cancellations. 
  Call 1-888-327-2757, option 2. *For Canadian residents, please use 510-544-2707.

Swim Lagoon Closed for 2024 Swim Season

Due to ongoing renovations, the Contra Loma swim lagoon is not opened for the 2024 swim season.

The Park District has partnered with the City of Pittsburg and the Ambrose Parks and Recreation District to provide alternative swim access and programs at Ambrose Aquatic Center in Pittsburg. The District’s support allows the Aquatic Center to be opened seven days a week during the 2024 swim season. Visit www.ambroserec.org/ambrose-aquatic-center for more information.

Trail Closure
The Miwok Trail through Los Vaqueros Watershed is closed for resource protection until further notice. For questions regarding the closure, please contact Contra Costa Water District. Updated June 01, 2024.

Temporary parking closures due to capacity

Due to increased visitation, primarily on Saturday and Sunday, vehicle access to Coyote Hills may close temporarily. Vehicle access to the park typically reopens when capacity is available, but expect very extended wait times to enter. Additional Parking is available at Dumbarton Quarry Campground.

Please submit any questions or comments using our Contact Us Form.

Water Availability Update
All water is non-potable (filter, treat, or boil for human consumption).

• Eagle Springs - Water available
• Backpack Camp - Water available
• Doe Camp - Water available
• Maggie's Half Acre - Water available
• Boyd Camp - No Water available (use Stromer Springs)
• Stromer Springs - Water available
• Stewart's Camp - Water available

Tassajara Creek/Ridge Trail Section Closed

The Tassajara Ridge Trail from Charbray Street across the valley to the top of the opposite ridge is closed due to extensive trail damage.

No horse-trailer parking at Proctor Staging Area until further notice.
The exit at Proctor Staging area has collapsed and is closed until further notice. The entrance is now serving as a one-lane, entrance and exit. Unfortunately, the entrance is too narrow to allow horse trailers to exit the staging area.  Updated June 01, 2024.

Trail Closure
Stone Corral Trail (from Coyote Trail to Morgan Territory Road) is closed due to storm damage. Updated June 01, 2024.

Trail Closure
Hardy Canyon Trail is closed until further notice due to storm damage.  Updated June 01, 2024.

Del Valle WEST Swim Beach Water Quality Conditions

• There is a Caution Advisory for blue-green algae posted at the West Beach. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program 

Annual Closure

The Castle Rock area of Mount Diablo State Park located adjacent to Stage Road Trail in Diablo Foothills will be closed from February 1, 2024, until August 1, 2024. View Map. This area is closed to visitors annually for the protection of the American peregrine falcon. Peregrine falcons are territorial and highly sensitive during nesting season.

Skyline Trail Partial Closure
Skyline Trail is closed between Fish Ranch Rd and Old Tunnel Road staging area due to a mudslide. View Map.  Updated June 01, 2024.

Storm-damaged Trail
A culvert on Leona Trail near Artemisia Trail has failed and is impassible. The trail is not closed as the park can still be accessed from both sides, but the trail no longer connects and the area should be avoided for further landslide issues. View Map. Updated June 01, 2024.

Storm Damaged Trail Closures
Garin Woods Trail, Ziele Creek Trail, and South Fork Trail are currently closed due to storm damage.
High Ridge Loop Trail has sustained damage but is open to pedestrian use. Meyers Ranch Trail is currently open with temporary repairs. Other trails have also sustained some storm damage. Use caution while accessing all open trails in Garin and Dry Creek Pioneer.  Due to storm damage Dry creek garden is closed until next year.  View Map.  Updated June 01, 2024.

Bay Trail Closed

• The San Francisco Bay Trail is closed at Bayfront and Pinole Shores Drive due to storm damage.
• Parking lot at the end of Pinole shores Drive will be closed to vehicle and pedestrian traffic for construction beginning on Tuesday, May 28 through mid-August.

Lake View Trail Partially Closed
The Lake View Trail is closed at the cattle pond due to storm damage. View Map.  Updated June 01, 2024.

Del Valle EAST Swim Beach Water Quality Conditions

• There is a Caution Advisory for blue-green algae posted at the East Beach. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program 

Old Moraga Ranch Trail Partially Closed
The Old Moraga Ranch Trail is closed from Sanders Drive to Sanders Ranch Road, due to a landslide.  Updated June 01, 2024.

Lake Temescal Water Quality Conditions

• There is no swimming due to a Danger advisory for blue-green algae posted at this time. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program 

Lake Anza at Tilden Park Water Quality Conditions

• There is a Caution Advisory posted for blue-green algae at Lake Anza. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program 

Trail Closures - Tilden

• Memory Trail is closed and impassable between Canon Dr. and Selby Trail until further notice because of a bridge failure. 
• The upper 0.43 miles of Laurel Canyon Trail is closed until further notice due to storm damage. Detour Map. View Map. 
• Grizzly Peak Trail is closed to equestrian traffic due to storm damage.
• Selby Trail is closed at the connector trail to the Merry-Go-Round until further notice.

Please consider alternative trails/trailheads, exercise caution and follow all signage in the area. Updated June 01, 2024.

Coyote Hills Parking Lot Project

The gravel parking lot located at Paseo Padre Parkway and Patterson Ranch Road is closed. View Map.
The existing lot will be replaced by a paved 100-car lot with shade, flush toilets, landscaping, EV charging, bus parking, picnic tables, and wildlife overlooks. The new parking lot is due to open in Spring 2024 and will be located further up Patterson Ranch Road and will have better pedestrian and vehicle circulation. 
To accommodate early park users, Coyote Hills staff will open the gates to the park at 7am.

Ferry Point Pier Removal Project

The Ferry Point Pier Removal Project is expected to begin in the summer of 2024 and last approximately 1-2 months. The pier is over 100 years old and has deteriorated beyond repair. Removal is necessary for public and maritime safety. The iconic metal Gantry structure and the concrete fishing pier will not be removed. The public fishing pier at Ferry Point will be closed during construction for public safety.  

Construction Notice - Coyote Hills Restoration and Public Access Project
Trails may be re-routed periodically as needed. There will be a traffic lane shift along Patterson Ranch Road - please use caution. The project is expected to open in Spring 2024. More information.  Updated June 01, 2024.

Contra Loma Reservoir Water Quality Conditions

• There is a Danger Advisory for blue-green algae posted at the reservoir at this time. See Blue-Green Algae Information for additional details.
• Note: The Swim Lagoon is closed for the 2024 season. Blue-Green Algae issues do NOT affect the Contra Loma Swim Lagoon water quality.

Lake Chabot Water Quality Conditions

• A Danger Advisory for blue-green algae is posted. See Blue-Green Algae Information for additional details.
• Swimming is never permitted at Lake Chabot.

Area Closure Notice - Martin Luther King Jr. Regional Shoreline

• Shoreline Center is closed
• Right Dock (south side) is closed. Pilings are in need of replacement

Keller Beach at Miller/Knox Regional Shoreline Water Quality Conditions

• Swim Beach Conditions [PDF]
• Monitoring Program

Area Closure Notice - On-Going Soil Delivery and Grading Work

This project is part of the Park District’s ongoing efforts to build up the topography of the park to meet the standards of the District’s Oyster Bay Land Use Plan Amendment adopted in 2013. More information.

Lago Los Osos at Quarry Lakes Park Water Quality Conditions

• A Danger Advisory is posted at Lago Los Osos. See Blue-Green Algae Information for additional details.
• Swimming is never allowed and water contact is not permitted at Lago Los Osos.

Area Closure Notice - Soil Testing
Recent soil testing of the entire landfill detected lead in specific, localized areas around the perimeter of the north side of the park (the portion of the park located across the Hoffman Channel bridge). For your continued safety, the areas are fenced off from all public/pet access. The Park District, under oversight of the San Francisco Bay Regional Water Board, is developing a plan to restore these areas.  Updated June 01, 2024.

Trail Closure Notice
Lake Trail is closed due to terrain damage.
The section of Lake View Trail below Stanley Blvd is now open. The lower connector trail from the bridge at North Beach that extends up to Lake View Trail will remain closed until storm damage is repaired. Updated June 01, 2024.

Shadow Cliffs Lake Water Quality Conditions

• A Caution Advisory for blue-green algae is posted at Shadow Cliffs. See the Blue-Green Algae Information page for additional details.
• Swim Beach Conditions [PDF]
• Monitoring Program 

Shinn Pond at Alameda County Trails Water Quality Conditions

• There are no advisories for blue-green algae is posted. See Blue-Green Algae Information for additional details.
• Swimming is never allowed at Shinn Pond.

Horseshoe Lake / Niles Swim Beach Water Quality Conditions

• There is a Caution Advisory for blue-green algae posted at Horseshoe Lake. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program

Trail Closure Notice - Lafayette-Moraga Regional Trail
Until further notice, the Valle Vista to Westchester section of the Lafayette Moraga Trail is closed.  This closure only affects the last half-mile on the Moraga end. The remaining 7 miles from Lafayette into Moraga is open for normal trail activity. Updated June 01, 2024.

Reporting Swimmer's Itch

To report cases of Swimmer's Itch please call Alameda County Environmental Health (510) 567-6700 or East Bay Park's Water Management 510-544-2328

Crown Beach Regional Shoreline Water Quality Conditions

• Swim Beach Conditions [PDF]
• Monitoring Program 

Trail Closure - Briones to Las Trampas Trail
The Briones to Las Trampas Trail from Golden Gate Way to Moraga Blvd. in downtown Lafayette is closed until further notice. Updated June 01, 2024.

Caution - Franklin Ridge Loop Trail
The northern section of the Franklin Ridge Loop Trail is currently experiencing significant rutting and damage as a result of PG&E activity. Please exercise caution when navigating this uneven surface. We are actively working with PG&E to get the trail repaired as soon as conditions allow. Updated June 01, 2024.

Big Break Regional Shoreline Water Quality Conditions

• There are no current advisories posted for blue-green algae at Big Break. See Blue-Green Algae Information for additional details.

Newly Renovated Pool

The newly renovated Roberts Pool will reopen for the swim season in 2024.