Army Corps of Engineers · Oklahoma
Post Oak Park
Army Corps of Engineers · Oklahoma, United States
- Sites
- 20
- Hookups
- 20 electric, 20 with water
- Season
- April 1 to October 30
- Max RV length
- 83 ft
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- Yes
- Dump station
- Yes
- Pets
- Yes
- Elevation
- 751 ft
- Dark sky
- Bortle class 2
- Cell coverage
- T-Mobile good · AT&T good · Verizon good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Copan Lake
- Nearest town
- COPAN
- Address
- 396120 State 10 Highway, COPAN, OK, 74022
- Phone
- 918-532-4334
- Activities
- Camping, Hiking
19 numbered sites are mapped one by one - open the site map to pick yours.
About
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.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 45° | 28° | 3° | 63° | 11 of 11 |
| February | 51° | 32° | -18° | 77° | 9 of 11 |
| March | 63° | 43° | 21° | 77° | 6 of 11 |
| April | 73° | 51° | 32° | 87° | 0 of 11 |
| May | 79° | 63° | 49° | 91° | 0 of 11 |
| June | 90° | 72° | 55° | 97° | 0 of 11 |
| July | 91° | 75° | 64° | 99° | 0 of 11 |
| August | 90° | 73° | 64° | 103° | 0 of 11 |
| September | 88° | 68° | 55° | 98° | 0 of 11 |
| October | 70° | 53° | 32° | 86° | 1 of 10 |
| November | 63° | 44° | 18° | 76° | 3 of 10 |
| December | 50° | 35° | 18° | 73° | 8 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Washington Cove · Army Corps of Engineers · 2 mi · 107 sites
- Osage Hills State Park · Oklahoma State Parks · 16 mi · 49 sites
- Rivercrest Campground (Walter Johnson Park) · City, County & Regional Parks · 22 mi · 62 sites
- The Woods Campground (Walter Johnson Park) · City, County & Regional Parks · 22 mi · 56 sites
- Card Creek · Army Corps of Engineers · 26 mi · 20 sites
All public campgrounds in Oklahoma · Every state and province · Facts read from the operator 2026-02-25. Confirm fees, rules and current status with the operator before you go.