Nestled between the western slope of the Cascade Range and the folding hills of the Willamette Valley near Sweet Home, Foster Reservoir is one of the 13 reservoirs in the Willamette Valley that was built between 1961 and 1968 by the U.S. Corps of Army Engineer. The reservoir confines water from the middle and south forks of the Santiam River. Construction was done consecutively with the Green Peter Dam.
Foster and Green Peter reservoirs and dams are operated together to serve for the purposes of hydroelectric power generation, water retention, flood damage prevention, irrigation, and a variety of recreation opportunities. Foster Dam is a rockfill construction of 126 feet high and 4,565 feet in length, with a storage size of 61,000 acre-feet. When full, Foster Reservoir covers about 494 ha (1,220 acres) and Green Peter Lake – 1,505 ha (3,720 acres). The length of Green Peter and Foster Lakes are 1,500 ft (457 m) and 4,565 ft (1,391 m) accordingly. The Foster Lake Environmental Project provides habitat for rare species such as the northern spotted owl, western pond turtle, steelhead, cutthroat trout and Chinook salmon.
Foster Reservoir's proximity to Interstate 5 has in the recent years made the reservoir a popular recreation site with high traffic in the summer season. Some of the activities offered include fishing, water skiing, and swimming. The reservoir is well known for a rainbow trout, which are stocked by South Santiam Fish Hatchery annually. The lake is a good site for recreational stops, camping, and boating.
The Quartzville Recreation Corridor and Back Country Byway starts from the Foster Reservoir and runs approximately 50 miles northeast along Green Peter Reservoir and the Quartzville National Wild and Scenic River, connecting U.S. Highway 20 Oregon Highway 22.
1 - Andrew Wiley Park
2 - Edgewater County Park & Marina
3 - Foster Lake RV Resort
4 - Country Star RV Park
5 - Shea Point
6 - Calkins Boat Ramp
7 - Gedney Creek Boat Park
8 - Lewis Creek Park
9 - Sunnyside Park
10 - River Bend Park
11 - Thistle Creek Boat Ramp
12 - Whitcomb Creek Park
Region: Foster and Green Peter Lakes Recreation Areas • Oregon • USA
Operated: Linn County & Sweet Home
Access allowed: Year-round
Service: RV and tent campgrounds, picnic areas, playgrounds, drinking water, boat ramps and moorage, restrooms.
Activities: Camping, hiking, bicycling, fishing, swimming, boating, picknicking
Accomodation: Campgrounds, RV sites, cabins
Foster Reservoir Facts
Elevation: 641 feet (195 m)
Surface area: 1,220 acres
Shoreline: 11 miles (17.7 km)
Maximum depth: 110 ft (33.5 m)
Transparency: 20.3 ft (6.2 m)
Andrew Wiley Creek Park (Sweet Home City Park)
Located at the base of Foster Dam on the bank of the South Santiam River, Andrew Wiley Creek is a day-use park. The ten acres park provides great opportunities for water enthusiasts, anglers, hikers, and nature lovers. There are picnic areas with picnic tables and barbecues, riverside trails, a boat ramp, toilets.
Access allowed: Year-round
Address: 1936 54th Ave, Sweet Home, OR 97386
Edgewater County Park & Marina (Linn County Park)
Edgewater County Park & Marina is located on the Southwest shore of Foster Reservoir on Highway 20. The park is a full-service facility with water, electric, sewer, satellite TV connections, WiFi, and a store. Open year round, Edgewater County Park & Marina offers a few tent camping, 49 full hookup RV campsites, and 40 boat slips.
Foster Lake RV Resort
Located on the south shore of Foster Lake on Highway 20, Foster Lake RV Resort offers full and partial RV sites, cabins, studio, tent sites, a fitness room, heated pool, a play area for the kids, cable TV, WiFi, boat and RV storage.
Country Star RV Park
Located on Highway 20 across the street to Foster Lake, Country Star RV Park offers 25 full hooks up RV sites, laundry room.
Located off Highway 20, Shea Point is a recreational day-use area with a viewpoint, interpretive displays, and a paved riverside trail.
Calkins Boat Ramp (Linn County Park)
Calkins Boat Ramp is located on the southeast corner of Foster Lake.
Access allowed: Mid-May through Mid-September
Address: 44529 Quartzville Rd, Foster, OR 97345
Gedney Creek Boat Park (Linn County Park)
Located on the north shore of Foster Lake and about 1 mile east of Foster Dam, Gedney Creek Boat Park offers a boat ramp.
Access allowed: May - September
Address: 43795 North River DR., Foster, OR 97345
Lewis Creek Park (Linn County Park)
Located on the north shore of Foster Reservoir, 40-acre Lewis Creek County Park is a day-use area that offers a variety of recreational opportunities including boating, water-skiing, swimming, picnicking. A roped-off swim beach, picnic areas with tables and barbecues, moorage, playgrounds, paved trails make this spot a popular summer destination.
Access allowed: May - September from 10 am until dusk
Fees (day-use): $5 per vehicle per day
Address: 44450 North River Drive, Foster, OR 97345
Sunnyside Park (Linn County Park)
Sunnyside County Park on the northeast shore of Foster Lake is a campground and a day-use area. The 98-acre park provides a full range of water sports opportunities including fishing, swimming, boating, waterskiing, and jet skiing. The facility offers 130 hooks-up campsites, 35 non-hookup sites, playgrounds, volleyball courts, reservable picnic shelters and group picnic ring, boat moorage and ramp, hiking trails, and a fish cleaning station.
River Bend Park (Linn County Park)
Nestled on the bank of the upper South Santiam River, next to Highway 20, 90-acre River Bend County Park is a campground and day-use area. The campground has 74 basic hook-ups sites with water and electric, 10 non-hookups sites, and 5 cabins. The park offers a variety recreational opportunities such as camping, hiking, swimming, and picnicking.
Thistle Creek Boat Ramp (Linn County Park)
Nestled on the north shore of Green Peter Reservoir, 9.2 acre Thistle Creek Boat Ramp is a day-use area.
Access allowed: Year-round
Address: Green Peter Reservoir
Whitcomb Creek Park (Linn County Park)
Whitcomb Creek County Park is located on the north shore of Green Peter Reservoir. The 328-acre park offers camping, boating, hiking, fishing, swimming, water-skiing, hiking, and picnicking. The facility has a group camping area, 39 non-hookup campsites, and boat ramp.