JETMORE, Kan. (AP) — Heavy rains this week have caused officials to open the floodgates on the HorseThief Reservoir dam in southwest Kansas for the first time since it was built in 2009.

Manager Joshua Hobbs tells The Hutchinson News that there’s concern some campsites around the 450-acre lake may be flooded with the weather forecast calling for more rain.

Hobbs says the lake is nearly full since torrential rains pushed the water level up some 11 feet. He says they received reports of up to 10 inches of rain at locations within the watershed.

Around six campers were in the park on Thursday, and some were debating leaving, but all the cabins in the park remained rented for the weekend.