Find the exact water body
Bethany Reservoir’s caution says harmful algae may be present in the reservoir. Lake Del Valle’s visitor page separately reports a caution advisory for blue-green algae and directs visitors to additional information. These statements concern their named waters. They should not be read as a statewide finding, nor as evidence about another lake simply because it is nearby.
Official visitor information · Official visitor information
Read the location and instructions together
Hendy Woods reports toxic algal mats in the Navarro River at the park’s day-use area and at Philo Greenwood Bridge. Its notice relays the California Water Board’s advice that visitors and dogs should not swim or drink where algal mats are present. The page also points to the Water Board’s current reports map. Follow the source’s location-specific instructions rather than treating a general park activity listing as a water-quality assessment.
Use current agency updates
The directory preserves the advisory wording and the date we checked it. Before a water-focused visit, open the park’s official advisory and any linked monitoring report; the Hendy Woods notice expressly directs visitors to current Water Board reports. A missing notice in this directory is not a water test, and an old check date does not establish present conditions.
Documented current impacts
These notices are shared with affected park pages. Regional guidance is labeled separately.
Silverwood Lake State Recreation Area: Boating and boat ramps
Park-specific information
- Boating and boat ramps
Dock damage has made the ramps inaccessible and closed boating for the near future. The agency identifies day use and camping separately; no reopening date is given.
Salton Sea State Recreation Area: Bombay Beach Campground and Varner Harbor
Park-specific information
- Bombay Beach Campground and Varner Harbor
The campground is closed, and Varner Harbor is unavailable to vessels until further notice. Check the agency’s current access instructions before bringing a boat.
Picacho State Recreation Area: Lower Dock boat launch
Park-specific information
- Lower Dock boat launch
The launch is closed until further notice. The source separately identifies Lower Dock day use; launch closure does not establish that every day-use area is closed.
Silverwood Lake State Recreation Area: Lake water-quality caution
Park-specific information
- Lake water-quality caution
The agency posts a caution-level algae advisory. Follow current posted water-contact instructions, including those for pets; water-quality status and boating access are separate issues.
Lake Del Valle State Recreation Area: Lake water
Park-specific information
- Lake water
The official visitor page posts a blue-green algae caution advisory. Check the managing agency’s current water-quality information before swimming or boating.
Hendy Woods State Park: Navarro River day use and Philo Greenwood Bridge
Park-specific information
- Navarro River day use and Philo Greenwood Bridge
The park reports toxic algal mats at these locations and directs visitors to current Water Board reports. Follow the posted water-contact advice for people and dogs.
Bethany Reservoir State Recreation Area: Reservoir water
Park-specific information
- Reservoir water
The official page posts a caution that harmful algae may be present. Check the park’s current water-quality advice and posted signs before water contact.