All public roads are graveled, but during wet weather conditions, they can sometimes be muddy. Please observe area regulations and drive only on roads open to the public. All other roads are open to foot and bicycle traffic. It's not uncommon to view over 15,000 ducks and geese on the Buttonwillows. There is a directional road sign on Hwy 33 pointing to the parking lot.
Access is by foot only.
There is no charge for access, however all visitors must register at the self-registration booth in the parking lot. From Los Banos, continue west on Hwy 152 approx. Turn left and continue to the San Luis Reservoir Wildlife Area Parking Lot. The wildlife area is owned by the U.S. Bureau of Reclamation and the California Department of Water Resources and operated by the California Department of Fish and Game. The habitat is steep oak-grassland.