Flat Lake
Bathymetric Map and Fishing Information

Bathymetric Map of Flat Lake

General Information

  • Mean Depth: 5.6 m (18.3 ft.)
  • Maximum Depth: 13.4 m (44.0 ft.)
  • Shoreline Length: 8.2 km (5.1 mi.)
  • Management Area: Mat-Su
  • USGS Map: Tyonek C-1
  • Surface Area: 119.7 ha (295.8 acres)
  • Volume: 6,669,435 m3 (235,528,876 ft3)
  • Elevation: 43 m (141 ft.)

Access Information

  • Directions: The primary access to Flat Lake is by boat from Big Lake, access for Big Lake located at Big Lake South State Wayside, accessed from Mile 52.3 Parks Hwy. West on Big Lake Rd. 3.6 miles to Y. Left at Y on South Big Lake Rd. 1.7 miles to Big Lake South Wayside with camping and boat launch. Fees charged. OR: Continue on South Big Lake Rd. 6.0 miles to Purintan Road. Right on Purinton Rd. 1.6 miles to canal between Mirror and Flat Lakes. NOTE: Limited public access. Majority of lake shoreline is privately owned. Please respect private property. Keep lake and access sites free of litter.
  • Status: Road ROW
  • Meridian, Township, Range and Section: Seward, 017N, 004W, 28
  • Lat/Long: 61.530556°    -150.008333°