OklahomaReservoirWashington County

Copan Lake

Copan Lake is a 4,850-acre reservoir in Oklahoma. You will find it in Washington County. It is managed by USACE Tulsa District. This guide maps 1 named swimming spot around its shoreline.

Photo: Kurt Bauschardt from Edmonton, Canada · CC BY-SA 2.0 · Wikimedia Commons

CountiesWashington County

Coordinates36.8847, -95.9674

Surface area4,850 acres

Full pool710.0 ft

Completed1983

Managed byUSACE Tulsa District

Swimming beaches on Copan Lake

1 named swimming spot and shoreline access points, from USGS GNIS, Recreation.gov and the Forest Service. None is staffed by a lifeguard unless the operating agency posts one.

Copan Lake

0.2 mi from the lake center.

Recreation.gov (RIDB)

Copan Lake on the map

Lake center, swimming spots and access points.

Get directions

Weather and water temperature

Air temperature and wind from Open-Meteo. Water temperature only when the lake has a public sensor.

Weather data by Open-Meteo

Swimming at Copan Lake

Copan Lake sits at 36.8847, -95.9674. The dam closed in 1983. Surface elevation is about 689 feet.

The shoreline of Copan Lake has 1 named swimming spot and 6 public recreation areas in the datasets we read. They include Copan Lake. These come from Recreation.gov (RIDB). Recreation areas nearby include Angler'S Point, Post Oak Park and Copan Point. Fees and opening dates are set by each park, not by the agency that runs the water.

Inland lakes are not monitored the way ocean beaches are, so posted signs matter more here. There is no water temperature sensor here, so only air conditions are shown. Season dates vary by park; the operating agency publishes them each spring.

If Copan Lake is busy, the nearest alternatives here are Hulah Lake (Oklahoma, 8 mi), Birch Lake (Oklahoma, 26 mi) and Elk City Lake (Kansas, 27 mi). In all, 40 lakes in Oklahoma are covered here.

Copan Lake has no public water level gauge that we can read, so there is no level chart here. An invented number would be worse than none. Ask the managing agency directly if the level matters for your trip.

Recreation areas on Copan Lake

6 public recreation areas mapped around the lake by the U.S. Army Corps of Engineers. Facilities vary by area; check the managing office for opening dates and fees.

Angler'S Point Post Oak Park Copan Point Washington Cove Model Air Park Osage Plains

Source: USACE Recreation Areas

Questions about Copan Lake

What is full pool at Copan Lake?

Full pool is 710.0 ft. Water above that level is flood storage and is released as conditions allow.

Can you swim in Copan Lake?

Yes. This guide maps 1 named swimming spot around the lake, including Copan Lake. None is staffed by a lifeguard unless the operating agency posts one.

How big is Copan Lake?

About 4,850 acres.

What other lakes are near Copan Lake?

The closest in this guide is Hulah Lake, about 8 miles away in Oklahoma.