Workers Letting Cyclists Pass

Alerts and Closures


Know before you go! Review alerts/notices below before heading out to parks. Some trails, park areas, swim facilities, may be temporarily closed -- due to weather or water/algae conditions, park projects, habitat restoration, or repairs and maintenance.

Alert LevelLocationDescription
Caution Advisory Posted

Lake Temescal Water Quality Conditions

Other Posted

Vegetation Management on Redtail Trail

Vegetation management is underway on Redtail Trail from November 28 through mid-December. Due to heavy machinery working in the area, Flaggers will be providing traffic control on the trail and on the adjacent sections of Marciel RoadPlease follow trail signage and possible short detours. For more info, please visit the Fuels Management page.

Area Closure Posted

Tilden Newt Migration

South Park Drive will be closed to vehicle traffic (pedestrians and bikers allowed) from November 1, 2022, to April 1, 2023, for the annual road closure for newt migration. All reservations along the road are non-reservable during this time.

Area Closure Posted

Area Closure Notice - Lake Anza Lawn

  • Lake Anza Lawn Area is closed for a construction project. Please use alternative lawn areas at Meadows on Lone Oak Rd. The Lake Anza Trail and picnic sites are open for use. 
  • Updated 12/2/2022

No Advisory Posted

Lake Anza at Tilden Park Water Quality Conditions

Trail Closure Posted

Trail Closure Notice - Tilden

  • 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.
  • Updated 12/2/2022

Area Closure Posted

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 2023 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.

Danger Advisory Posted

Del Valle Boat Launch Water Quality Conditions

Trail Closure Posted

Wildcat Marsh/Landfill Loop Trail Maintenance

Possible closures along Wildcat Marsh/Landfill Loop through December 2022 due to annual trail maintenance. 

Seasonal flooding along the Wildcat Creek Trail - The trail is located at the Wildcat Marsh Staging Area off Richmond Parkway. A section of trail crosses under Richmond Parkway, alongside Wildcat Creek. This area floods annually and can often remain impassable until late spring. The flooded section of the trail is approximately 100 feet, but all other portions of this area remain open and passable.

Other Posted

Ferry Point Pier Removal Project - Miller Knox

The East Bay Regional Park District owns and operates Miller/Knox Regional Shoreline, including the historic Ferry Point Pier which extends into the San Francisco Bay. The wooden pier is over 100 years old and damaged and must be removed for safety.
Ferry Point Pier Project Description and FAQs (PDF) Ferry Point Pier Project Description and FAQs (Spanish) (PDF)

Other Posted

Construction Notice - Coyote Hills Restoration and Public Access Project

  • Construction will take place through Spring 2023. More information
  • Trails will be re-routed periodically as needed. Updated 12/2/2022.

Trail Closure Posted

Trail Closure Notice - Tuibun Trail

  • The Tuibun Trail, between Paseo Padre Parkway and the kiosk, has been re-routed due to construction work taking place through Fall 2023. View Map.
  •  Updated 12/2/2022

Caution Advisory Posted

Contra Loma Reservoir Water Quality Conditions

  • There is a Caution Advisory for blue-green algae in the reservoir at this time. See Blue-Green Algae Information for additional details.
  • Note: The Swim Lagoon is closed for the 2022 season due to ongoing maintenance. Blue-Green Algae issues do NOT affect the Contra Loma Swim Lagoon water quality.

Caution Advisory Posted

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 Posted

Area Closure Notice - Martin Luther King Jr. Regional Shoreline

  • Shoreline Center
  • Tidewater Outdoor Recreation Office
  • Kayak Ramp at the North Doolittle Staging Area
  • Right Dock (south side). Pilings are in need of replacement
  • Updated 12/2/2022

No Advisory Posted

Keller Beach at Miller/Knox Regional Shoreline Water Quality Conditions

Area Closure Posted

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.
  • Updated 12/2/2022

Caution Advisory Posted

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.

Area Closure Posted

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 12/2/2022

Area Closure Posted

Area Closure Notice - Shadow Cliffs

  • Swim beach is closed due to low water levels. Swimming not permitted. Refreshment stand closed for 2022 season.
  • Fish plants on hold for 2022 season.
  • No watercraft of any kind will be permitted to launch until further notice.
  • Please help keep invasive mussels out of our water.
  • Read more about mandatory watercraft inspections and the Invasive Mussel.
  • Updated 12/2/2022

Park Rule Violations

To report an Emergency or Crime/Suspicious Activity in Progress,
call 911 or (510) 881-1121 from a cell, 24 hours a day.

To report Non-Emergency Park Rule Violations such as reckless bike/skate/scooter riding, failure to properly leash or control pets, and improper trail usage such as eBikes or mountain bikes on restricted trails, please call our Non-Emergency Public Safety Dispatch at (510) 881-1833, 24 hours a day, or submit a Park Watch Report online at the link below.

For Non-Emergency Trail Safety Hazards or Damaged Trails/Facilities, locate a park ranger or call Park Operations at (510) 544-2510 (Mon-Fri, 8:30am-5pm, voicemail available after hours or call the Non-Emergency Dispatch line above).

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