Turn left at the sign and drive to the parking lot at the end of the road. This is another good place to scan the lake for divers. From the marina, go back to G28 and head west again. In 2.0 miles you will come to the dam between Lake Red Rock and Roberts Creek Lake. Divers such as grebes, mergansers, and scoters are often seen from here.
Gulls frequently roost on the beach and can be seen from the parking area on the dam.
All of Roberts Creek Park is worth birding. The hardwood timber on the west side of the lake is good for passerines, including Scarlet Tanager and Kentucky Warbler, and a Cooper's Hawk nested here a few years ago. The wet areas along the east road have nesting Willow Flycatcher, Yellow Warbler, and Bell's Vireo. Follow the east entrance road for 0.4 mile and then turn right. In 0.5 mile turn left at a stop sign.