Water Warnings Posted | Big Break | Water Quality NoticeCyanobacteria (blue-green algae) is present at the shoreline, but toxins detected recently have been below California advisory guidelines. There are no advisories posted at this time. See Cyanobacteria (blue-green algae) for more info. |
Caution Advisory Posted | Quarry Lakes | Water Quality Notice - Shinn PondCyanobacteria (blue-green algae) is present and a Caution Advisory is posted at Shinn Pond. Swimming is never allowed and water contact is currently not permitted at Shinn Pond. Due to the presence of toxic algae in the pond, please keep dogs away from the water. Cyanobacteria (Blue-Green Algae) Updates |
Water Warnings Posted | Contra Loma | Water Quality NoticeCyanobacteria (blue-green algae) is present in the reservoir but all toxins detected recently have been below California state advisory thresholds. There are no current cyanobacteria advisories. See Cyanobacteria (Blue-Green Algae) Updates for more info. |
Caution Advisory Posted | Leona Canyon | Remedial Action NoticeThe Leona Heights Rifle Range within Leona Canyon is under a surveying and clean-up action plan that will be performed by the U.S. Army National Guard and Army Corps of Engineers. The site was once used as a military rifle range prior to acquisition by the Park District. The Rifle Range is located along Keller Avenue and Campus Drive in the Sequoyah Heights neighborhood. Map | Fact SheetPlease direct all questions to:
Reuben Sendejas, CA Army National Guard
916-369-4388; reuben.r.sendejas.civ@army.mil. |
Trail Closure Posted | Anthony Chabot | Trail Closure NoticeUntil further notice: - Goldenrod Trail is closed South of Buckeye Trail to the Chabot Equestrian Center parking while Staff addresses a potential tree safety issue.
- Towhee Trail is closed between Honker Bay Trail and Campsite 12 due to downed trees.
- Mirador Trail is closed from the Two Rock Trail to the trail end of Mirador Trail.
- MacDonald to Grass Valley Connector Trail is closed due to damage caused by rainstorm.
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Trail Closure Posted | | NoticeUntil further notice, the Valle Vista to Westchester section of the Lafayette Moraga Trail is CLOSED. The Town of Moraga closed the pedestrian bridge section, due to slide movement caused by recent storm events. 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. |
Water Warnings Posted | Crown Beach | Water Quality ConditionsCrown Beach is OPEN for swimmingConditions [PDF] |
Water Warnings Posted | Miller/Knox | Water Quality NoticeKeller Beach is OPEN for swimming.Conditions [PDF] |
Water Warnings Posted | Shadow Cliffs | Water Quality NoticeShadow Cliffs swimming is CLOSED for the 2021 season due to low water levels. There are no cyanobacteria advisories at this time.Cyanobacteria (Blue-Green Algae) Updates |
Caution Advisory Posted | Lake Chabot | Water Quality NoticeCyanobacteria (blue-green algae) is present at the lake and toxins have been detected recently. A Caution Advisory is posted around the lake.
See Cyanobacteria (Blue-Green Algae) Updates for more information. |
Water Warnings Posted | Tilden | NoticeLake Anza Swim Area: CLOSED - No Swimming. Cyanobacteria (blue-green algae) is present in lake, but no toxins have been detected recently. There are no advisories posted at the lake. As a precaution, keep dogs away from water.Lake Anza Lawn Area: CLOSED, until further notice, for a construction project. Please use alternative lawn areas at the Brazil Room and at Meadows on Lone Oak Rd. Restrooms at lake facility closed with portable restrooms available in the parking lot during the project. The Lake Anza Trail and picnic sites are open for use. Water Quality NoticeWater Conditions [PDF] | Monitoring Program | Cyanobacteria (Blue-Green Algae) Updates |
Water Warnings Posted | Temescal | Water Quality NoticeCyanobacteria (blue-green algae) is present at the lake, but no toxins have been detected recently. There are no advisories posted at this time. See Cyanobacteria (Blue-Green Algae) Updates for more info.Monitoring Program | Cyanobacteria (Blue-Green Algae) UpdatesThe District regularly monitors Lake Temescal to ensure the water quality meets acceptable levels for fishing and swimming. Water quality samples are taken from four locations around the Lake; including the swim beach.
The Swim Facility/Area is CLOSED until further notice. |
Water Warnings Posted | Quarry Lakes | Water Quality NoticeCyanobacteria (blue-green algae) is present at Horseshoe Lake, but no toxins have been detected. There are no advisories posted at Horseshoe Lake or the swim beach this time. See Cyanobacteria (Blue-Green Algae) Updates for more info.Conditions [PDF] | Monitoring Program | Cyanobacteria (Blue-Green Algae) Updates |
Danger Advisory Posted | Del Valle | Water Quality NoticeCyanobacteria (blue-green algae) is present in the reservoir and a Danger Advisory posted. No swimming is allowed. See Cyanobacteria (Blue-Green Algae) Updates for more information. Conditions [PDF] |
Venue/Attraction Posted | Roberts | Closure NoticeRoberts Pool at Roberts Regional Recreation Area will be closed from February 2022 through Spring 2023 for facility upgrades, renovation, and replacement. More info |
Trail Closure Posted | | NoticeA small section of the Briones to Mt. Diablo Trail in Larky Park, Walnut Creek, from 1st Avenue to approximately 300 feet into Larky Park (heading southwest from 1st Avenue) will remain closed from Tuesday, January 18th to Friday, February 18th, 2022. East Bay Municipal Utility District will be making emergency construction repairs on a water line under the trail, and will provide a short detour around the Larky Park Swim Center. |
