The Army Corps of Engineers says a leaking pipe is reducing the water level of a lake at an Iowa state park.
Television station KCCI reports workers tried Monday to stop a leaking valve that's contributing to the reduced level at Big Creek Lake in Polk County. The lake, which is primarily used for recreation, is losing about a foot of water every month.
A Corps spokesman says the group is trying to prevent the lake from going dry. Dozens of sandbags have been placed more than 35 feet below the lake's surface to slow discharge from the diversion dam.
A slide gate that controls the dam's outflow has been inoperable since 1998. A new gate has been designed but the group is uncertain about funding.