G2 Consulting Group assisted in the rehabilitation of two very different dam facilities with a similar need: they were constructed decades ago – one over a century ago – and time has taken its toll. Both facilities required attention to maintain their integrity.
Moores Park Dam, Lansing MI
Moores Park Dam was constructed in 1904 and is owned by Lansing Board Of Water and Light. Located on the Grand River, Moores Park Dam is used for hydroelectric power and recreation, among other things.
G2 assisted Stantec Consulting Michigan and the Lansing Board of Water and Light in the rehabilitation of Moores Park Dam. Stantec determined that portions of concrete in the dam needed to be replaced, but continue to function during repairs. G2 designed a system to create dry conditions to facilitate concrete repair. This system included steel sheet pile cofferdams with water tight connections on the upstream side of the dam, and portable dams for the downstream side. G2 provided critical interface with the contractor as means and methods were developed.
Washago Pond Dam, Wayne County MI
Constructed in 1979 and owned by Huron-Clinton Metro Authority, Washago Pond Dam is an earthen, gravity dam. Eleven feet high and 200 feet long, the dam created Washago Pond from the Reagan Drain River.
G2 assisted Applied Science Inc. and the Huron-Clinton Metropolitan Authority in the rehabilitation of Washago Dam. The outlet culvert showed signs of distress, and G2 performed investigations to evaluate the condition of the earthen embankment, the culvert, and the headwall next to the culvert. These investigations point to hydrogeological problems: water appeared to be flowing around the outside of the outlet, causing erosion. G2 currently developed geotechnical recommendations for repair and stabilization.
Smart. Results. Fast. G2 is providing geotechnical expertise to facilitate rehabilitation of this critical infrastructure without impacting operations.