East of Sweet Home on the shores of Foster Lake, Sunnyside is a paradise for anyone who loves water sports. Camping, water skiing, fishing and jet skiing are just a few of the activities that make this 98-acre park one of the most popular sites in the Willamette Valley. Modest charge. Hiking trails, fishing picnic facilities, showers, boat launch. Group picnic area can be reserved for a fee. Closed during winter months.