Facilities at the campground include 147 trailer and tent units, tables,
fireplaces, running water, flush toilets, showers, garbage bins, gray water sumps, and an RV dump station.

The Thielsen View Forest Service Campground with 60 camping units is located on the west shore and the Diamond Lake Forest Service Campground with 238 camping units is on east shore. The area also features the Forest Service South Shore Picnic with 26 single family picnic tables, 10 group picnic tables, a lighted pavilion, barbeques, fire pits, horseshoe pits, a volleyball court, a playground, a bathroom, and a swimming beach.

A full service resort operating under special use permit from the Umpqua National Forest including motel units, cabins, a restaurant, a pizza parlor, two grocery stores, a sporting goods shop, a post office, a service station, propane, a Landromat, a swimming beach, boat and mountain bike rentals, moorage, charter fishing, hunting and fishing licenses, and horseback riding stables is also located in the Diamond Lake Recreation Area.

Also located in the area is the privately operated Recreational Vehicle park operating under special use permit from the Umpqua National Forest including 160 RV units with full hookups, laundry, shower facilities, and a recreation hall.

Directions from Prospect: Travel northeast on Highway 230 to its junction with Highway 138. Continue in 138 and turn left onto Road 4795 (Diamond Lake Loop) at the north entrance to Diamond Lake Recreation Area. Proceed 3.2 miles and turn right at the South Shore. Continue another half mile to the campground entrance on the left.

Seasonal Information:
Normal Services Available: Mid-May through September (NOTE: Weather Permitting) .

John Dellenback Trail - The John Dellenback Trail is eleven miles long and winds around diamond lake.

Thielsen View Campground - Located within the Diamond Lake Recreation Area, Thielsen View Campground offers 60 campsites and numerous outdoor activities.