Steve Killian, superintendent of Cooper Lake State Park, says the park will reopen for camping Monday, May 18 for those with existing reservations. Campers may begin making reservations, but Steve says it may be June 1 or thereabouts before they'll be able to camp. Meanwhile, the park has been hitting its occupancy limit early in the afternoon on Saturday and Sunday, so it's important to pay for admission online in advance before arriving at the park.