Located west of Bonaparte Lake, Hammer Lake recreation site offers 11 campsites and a boat launch. Boaters should be aware that power-driven vessels are prohibited on this lake.

This recreation site may be accessed either via 70 Mile House, or through Bridge Lake on Hwy 24. From Hwy 97 in 70 Mile House, turn east onto 70 Mile-Green Lake/North Bonaparte Road. Follow this route for approximately 25 km, continuing east past the turnoff to South Green Lake Road, and staying on the North Bonaparte/3200 Road to the 32-40km marker, and turn right onto the Eagan-Bonaparte Forest Service Road (3700 Rd). Follow the 3700 Rd for 7.5 km and turn right and follow the road for another 1.4 km then turn left to stay on the Eagan-Bonaparte FSR at the 3709 km marker. Continue approximately an additional 28 km and turn right onto the access road into Hammer Lake. If accessing the site through Bridge Lake, travel along Hwy 24 to Bridge Lake and turn south onto the Bridge Lake Business Route. Travel 0.8 km to the Bridge Lake Store and keep right onto North Bonaparte Road. Travel 2.2 km and turn left onto the Eagan-Bonaparte Forest Service Road (3700 Road). After passing Eagan Lake, continue travelling south east towards Bonaparte Lake. Follow the road south past Bonaparte Lake and then turn northwest remaining on the 3700 Road. Follow the road for another 0.8 km and turn left onto the access road into Hammer Lake.