The Quail Ridge Reserve is a peninsula into the southern end of Lake Berryessa. This land is closed to the public and is open to classes and research by permission only.

Quail Ridge Reserve is located off Highway 128 on an unnamed ridge immediately east of Wragg Ridge (see below) and is less than 16 km (10 miles) west of Winters as the crow flies – about 36 km (22 miles) west of Davis. The Reserve is accessed via a network of dirt roads (see Reserve Layout); the primary access road is the West Ashley Easement Road which runs along lower elevations on the western slopes of the Reserve. Near the tip of the peninsula this meets the Ridge Road, which extends the length of the Reserve but on or near the crest of the hills. Between these two roads are a small number of connecting trails, and through this network users can access most of the Reserve.

Due to the dynamic topography and the movement of soils on the dirt roads criss-crossing the Reserve, there is a Road Use Policy based on seasonal conditions with which users must comply. However, this should not discourage use or access to the peninsula – we provide two John Deere Gators for year-round access to all parts of the Reserve. The Reserve manager will inform you of this policy before your first visit.

From Davis: Head west on Russell or Covell Blvd. These roads merge before crossing Interstate 505. Pass through Winters and proceed on Highway 128. Go past the Monticello Dam. Past Markley Cove the road will begin to ascend. The front gate, a brown metal pipe gate, is at the top of the hill. It is located on the ridge-top between Markley Cove and Wragg Canyon Road, the first right after highway marker 30.56 driving west. The address is 7100 Highway 128.

From San Francisco: Head East on Highway 80. Travel through Fairfield and get off on the Pleasant Valley Road Exit (This exit says Lagoon Valley Rd. and Cherry Glenn Rd. but turns into Pleasant Valley Road as you travel North). Follow north until you intersect with Highway 128. Take a left onto Highway 128. Go past the Monticello Dam. Past Markley Cove the road will begin to ascend. The front gate, a brown metal pipe gate, is at the top of the hill. It is located on the ridge-top between Markley Cove and Wragg Canyon Road, the first right after highway marker 30.56 driving west. The address is 7001 Highway 128.