Alerts and Closures

Temescal Closed to Fishing due to Sewage Spill

December 2, 2024 - Lake Temescal is closed to fishing and body contact due to a sewage spill.

Introduction of a New Invasive Species: Golden Mussels

NOTICE: The invasive Golden Mussel (Limnoperna fortunei) has recently been identified in North America for the first time. This mussel has been identified in the Sacramento - San Joaquin Delta. This harmful, non-native species poses a significant threat to natural ecosystems, water infrastructure, and water quality. Golden Mussels are similar to quagga and zebra mussels; they are invasive and can reproduce quickly - but the Golden Mussel can thrive in a wider variety of environmental conditions including waters with lower calcium levels, making them an even more significant challenge and concern. 

For more information, click here.

Ardenwood Harvest Festival - Corn Picking Limit

To ensure there is enough corn for all attendees, there is a one burlap bag per person corn picking limit.

Brazilian Room Open House

Open House events are held on the 1st and 3rd Tuesday of each month from 3-7pm. No appointment is needed to attend the open house. Please join us!

Cashless Fee Collection Pilot Program

The Park District is implementing a cashless fee collection pilot program at Quarry Lakes aimed at reducing visitor wait times and improving operational efficiency. Beginning October 7, Quarry Lakes will only accept credit cards as payment for parking, dogs, fishing, and boating fees. The cashless pilot program will run from October 7, 2024, to April 4, 2025. If you have any questions or comments, please contact the Park District through the Contact Us Form.

Laurel Loop Trail Closure
Laurel Loop Trail is closed due to a downed eucalyptus tree.   Updated December 03, 2024.

South Park Drive Annual Closure for Newt Migration

South Park Drive in Tilden Park will be closed to vehicles from November 1, 2024 through March 31, 2025 opening on April 1, 2025 for the protection of California newts as they utilize the road to migrate during the rainy season.  Please adjust your travel plans by using other access routes such as Shasta Road or Golf Course Drive.  South Park Drive will remain open to pedestrians and bicyclists. More Info.

No Water

Due to a Contra Costa Water District (CCWD) line break, there is currently no water available at Eckley Pier. CCWD does not have an estimate for when water service will be restored.

Shoreline Center

**MLK SHORELINE CENTER TEMPORARY CLOSURE**
The Shoreline Center is temporarily closed for NEW RESERVATIONS AND TOURS.
We look forward to sharing a reopening date with you once that has been determined.
Please check back here for updates in the new year.

McCorkle Trail Is Partially Closed

McCorkle Trail is closed between Cerro Este Road and Backpack Road. Sunol Backpack Camp is accessible from Camp Ohlone Road.

Trail Partial Closure

Due to a downed tree, the section of Monte Cresta Trail between the "Park Bench" and Belgium Trail is closed until further notice.

Cashless Fee Collection Pilot Program

The Park District is implementing a cashless fee collection pilot program at Roberts Regional Recreation Area aimed at reducing visitor wait times and improving operational efficiency. Beginning October 7, Roberts Regional Recreation Area will only accept credit cards as payment for parking and dog fees. The cashless pilot program will run from October 7, 2024, to April 4, 2025. If you have any questions or comments, please contact the Park District through the Contact Us Form.

Dry Creek Garden Closures

Due to storm damage Dry Creek Garden is closed until further notice. 

No Open Fires or Barbecues

No open fires or barbecues of any type. Gas-fueled stoves are permitted at Alameda Grove and School Camp only.

Drinking Fountain Unavailable - Riverwalk Staging Area

The drinking fountain at Riverwalk just downstream of the BART tracks is not available. Drinking fountains are available upstream at Niles Staging Area and downstream at Beard Staging Area.

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.

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.

Fishing Pier Closure

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

Lake Anza at Tilden Park Water Quality Conditions

• The Swim Season is over for the 2024 Season. Swimming will resume in April 2025.
• There is a Danger Advisory posted for blue-green algae at Lake Anza. See Blue-Green Algae Information for additional details.
• Monitoring Program 

Seasonal Campground Closure

Anthony Chabot Family Campground and Group Campsites are closed for the season starting November 1, 2024. The campgrounds will be re-open on April 1, 2025.

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.

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 is a Caution Advisory advisories for blue-green algae posted at Shadow Cliffs Arroyo. See the Blue-Green Algae Information page for additional details.

Trail Partial Closire

Wildcat Creek Trail at the Richmond Parkway undercrossing is currently experiencing seasonal flooding. This trail will be impassable until flood waters recede sometime during the summer of 2025.

Shady Glen Trail Closure

The Shady Glen Trail is currently closed.

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

Trail Equestrian Closure
Due to the recent heavy rains, Golden Spike Trail is closed to equestrian use until further notice.   Updated December 03, 2024.

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. 

Lake Closure
Due to a sewage leak, Lake Temescal is closed until further notice. Please avoid contact with the water and no fishing during its closure. Updated December 03, 2024.

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 sunrise and 1:45 PM; boats must be returned by 4 PM. The store is open between 7 AM - 5 PM to purchase bait, tackle, fishing licenses, snack and drinks. 
• The Camp Store hours are Friday 2:30 PM – 8 PM; Saturday 8 AM - 8 PM; Sunday 8 AM - noon.
• Use caution on storm-damaged trails. Signs are posted.
• Construction equipment/noise may be present during normal working hours.
• The Visitor Center is open. See hours below.

The following amenities remain closed:

• The West Swim Beach is closed due to low water levels.
• 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 are under repair. 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.

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.

Del Valle Boat Launch Water Quality Conditions

• Swimming is now only allowed north of the Boat Launch.
• There are no advisories posted for blue-green algae. See Blue-Green Algae Information for additional details.
• Swim Beach Conditions [PDF] 
• Monitoring Program 

Trail Closure
Stone Corral Trail between Coyote Trail and the junction of Highland Ridge Trail is closed due to storm damage. Updated December 03, 2024.

Trail Closure
Hardy Canyon Trail is closed until further notice due to storm damage.  Updated December 03, 2024.

Skyline Trail Partial Closure

Skyline Trail is closed between Fish Ranch Road and Old Tunnel Road Staging Area due to a mudslide. View Map. 

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.

Storm Damaged Trail Closures
Garin Woods Trail, Ziele Creek Trail, and South Fork Trail are currently closed due to storm damage. Other trails have also sustained some storm damage. Use caution while accessing all open trails in Garin and Dry Creek Pioneer. View Map.  Updated December 03, 2024.

Lake View Trail Partially Closed
The Lake View Trail is closed at the cattle pond due to storm damage. View Map.  Updated December 03, 2024.

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 December 03, 2024.

Lake Temescal Water Quality Conditions

• December 2, 2024 - Lake Temescal is closed to fishing and body contact due to a sewage spill.
• Swimming is over for the 2024 Swim Season. Swimming will resume in April 2025.
• There are no advisories for blue-green algae posted at this time. See Blue-Green Algae Information for additional details.
• Monitoring Program 

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 early 2025 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.

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 early 2025. More information. 

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 Caution 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
Right Dock (south side) is closed. Pilings are in need of replacement Updated December 03, 2024.

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 Caution 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.

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 December 03, 2024.

Shadow Cliffs Lake Water Quality Conditions

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

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.

Big Break Regional Shoreline Water Quality Conditions

• There is currently a Danger Advisory posted for blue-green algae at Big Break. See Blue-Green Algae Information for additional details.