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A gray 4x4 Sprinter with a roof rack on a two-track through a wildflower meadow, cloud sitting on the mountains behind.

Army Corps of Engineers campground

Post Oak Park

Army Corps of Engineers campground in Copan Lake, Washington County, Oklahoma. 735 feet. 2.5 miles from Copan.

Reserve on Recreation.gov
Managed by
Army Corps of Engineers Copan Lake
Elevation
735 ft USGS elevation model, at the mapped point
Sites
20 20 standard electric
Longest rig
79 ft The longest vehicle any site is listed for
Hookups
Electric, Water, Sewer
Reservations
Recreation.gov
County
Washington County

Overview

Post Oak is located on the banks of Copan Lake in Oklahoma's Green Country. Camping, boating, picnicking, hunting and fishing are popular activities here.

Recreation

Copan Lake offers its visitors extensive opportunities for a memorable outdoor recreation experience. The lake is home to many species of game fish, including largemouth bass, white crappie, channel and flathead catfish, and various species of sunfish. Hikers and horseback riders enjoy exploring the area on 3 miles of trails that wind through the wooded and open meadows of the lake shore. 11,000 acres of land around the lake have been set aside for wildlife management. These lands are open for public hunting of deer, waterfowl, bobwhite quail, turkey, cottontail rabbit, and squirrel.

Facilities

This campground offers 19 sites with electric hookups. Amenities include flush and pit toilets, showers, drinking water, and a dump station.

Natural Features

The 4,850-acre lake sits on the Little Caney River among a prairie landscape of grasslands and croplands.

The description, directions and fees are the Army Corps of Engineers’s own words, from its record on Recreation.gov.

What people do here

  • camping
  • hiking

The land around Post Oak Park

The ringed pin is this campground; the others are its nearest neighbours. Switch on forest roads or BLM routes to see the way in.

Map layers

Layers
Base map
Legend

Federal land, by managing agency

  • Bureau of Land Management (BLM)
  • US Forest Service (USFS)
  • National Park Service (NPS)
  • US Fish and Wildlife (USFW)
  • Bureau of Reclamation (USBR)
  • Department Of Defense (DOD)
  • Bureau of Indian Affairs (BIA)
  • Other Federal
  • State
  • Local
  • Alaska Native Lands (Patented or Interim Conveyed)
  • Alaska Native Allotment

Federal campgrounds, by agency

  • Forest Service
  • Bureau of Land Management
  • National Park Service
  • Army Corps of Engineers
  • Reclamation, Fish and Wildlife and others

State and local land (USGS PAD-US)

  • State land
  • County and city land
  • Regional agency or district
  • Land trust or conservancy

Gaps with no tint inside public land are private parcels, often old mining claims and homesteads. They are not open to the public.

Dashed clay lines on the base map are unpaved tracks from OpenStreetMap. They show what exists on the ground, not what is legal to drive.

Select any point to see who manages the land.

Boundaries are approximate and land status changes. This map is a planning aid, not a survey or a statement of access. Confirm routes, closures and camping rules with the managing office.

Nearest campgrounds

Camping near

Source: Recreation Information Database (Recreation.gov), record updated February 25, 2026. Elevation from the USGS 3D Elevation Program. Seasons, fees, water and fire rules change; the managing office has the final word.

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