Laguna Honda, reservoir in San Francisco

Laguna Honda is a reservoir on the southwest slope of Mount Sutro in San Francisco that stores drinking water for the city. The water surface sits within forested slopes and is managed by the San Francisco Public Utilities Commission.

In 1865 the Spring Valley Water Works built a 13-mile redwood pipeline running from Pilarcitos Lake Reservoir in Pilarcitos Canyon to Laguna Honda. The 1906 San Francisco earthquake destroyed that pipeline. The lake and surrounding land are now managed by the San Francisco Public Utilities Commission.

The name Laguna Honda is Spanish for "deep lagoon," a reference to the reservoir's basin on Mount Sutro's southwest shoulder. The surrounding land and lake are managed by the San Francisco Public Utilities Commission, and the site is known among locals as a spot for watching birds and other wildlife within the city.

The reservoir is not open for swimming or water recreation and serves only as a water supply system. Visitors can explore the area from surrounding paths and roads, walking through the forested surroundings.

The area has undergone extensive restoration in recent years, with invasive eucalyptus trees removed and native oaks, willows, and other plants replanted to restore the habitat. These efforts transformed the landscape from an overgrown space into a thriving home for wildlife like birds and coyotes.