Archive

Sacramento River Levee Erosion

Ayres performed annual erosion site reconnaissance on the Sacramento River Bank project for the Sacramento District of the U.S. Army Corps of Engineers. During these site investigations, our team found a number of critical erosion sites where the river has eroded into the toe of the levee. Given growing concern for levee stability, design and… Read More »

Grimh Dam Removal

Ayres proposed and evaluated several alternatives for rehabilitating Grimh Dam, a 30-foot-tall hydroelectric dam in northwestern Wisconsin. Based on the alternatives evaluation, North Central Power Company decided to remove the dam. Ayres developed plans and specifications for staged removal of the concrete powerhouse, concrete spillway structures, and earthen embankments. Sediment volumes within the 710-acre-feet reservoir… Read More »