Timm Rennecke, left, Leech Lake Recreation Area manager, and Gus Garbe, park ranger, depart the boat ramp at Leech Lake Recreation Area to perform maintenance along the 1.5-mile river channel from the recreation area to the main body of Leech Lake Sept. 3, 2015. One of the more common maintenance items is adjusting buoys which mark the channel. The buoys are anchored with a block of concrete and need to be adjusted periodically throughout the recreation season. All buoys are removed prior to the lake freezing and cleaned or repaired during the off-season.