Flagstaff Lake Boat Ramp in Somerset County offers multiple access points for trailered boats, with several gravel and hard-surface ramps located around the lake's perimeter.

The lake is shallow with submerged tree stumps from pre-flooding clearcutting, so boaters unfamiliar with the area should exercise caution and be aware of potential hazards.

Amenities include parking areas and seasonal facilities at various launch sites, with Cathedral Pines Campground offering a sandy beach and additional services nearby.