Rooster Rock State Park is a day-use state park in Multnomah County, Oregon, near Latourell, with a clothing-optional beach section on the Columbia River. Access is by private vehicle to paved lots in the developed park, followed by marked trails to the river shore. There is no direct transit service. A state park day-use fee typically applies, and annual passes are generally accepted. The park is open for day use only, generally during daylight hours. The shore has sand and cobble, while developed areas include grassy ground, picnic areas, restrooms and trails. Restrooms are in developed areas, with no showers on the beach. There is no food service on the beach, so bring water and pack out waste. Late morning to afternoon offers the warmest conditions for beach use. Summer, principally July through September, has the warmest and driest conditions; other seasons are cooler and wet. The beach has high sun exposure with little cover, although there is limited natural shade from trees near the bank. Paved developed areas are generally accessible, while beach access over uneven natural ground may be difficult. Dogs are generally restricted from beach areas and required on leash elsewhere. There is no lifeguard service at river beach areas. The Columbia River water is cold with currents, and many people wade rather than swim. Main park areas suit families, while the clothing-optional beach section is adult-oriented. Expect busy conditions on warm summer weekends and quieter conditions on weekdays. Allow extra time for parking, walking, and finding space away from trails and other beach users.