 Workers in the deep tunnel |
 Mainstream Pumping Station located 350 feet below ground |
 Tunnel Boring Machine face reaches underground cavern |
 Thornton Transitional Reservoir (after a storm) |
 McCook Reservoir (under construction) |
 Gloria Alitto Majewski CUP Reservoir |
 Future site of the Thornton Composite Reservoir (under construction) |
 Connecting Tunnel of the Thornton Composite Reservoir (under construction) |
 Gap Dam at the Thornton Composite Reservoir (under construction) |
 Thornton Composite Reservoir took water for the first time the night of Thanksgiving 2015. |
 Thornton Composite Reservoir can hold up to 7.9 billion gallons of water preventing flooding and pollution in local waterways. |
 The Thornton Composite Reservoir is so large it could contain six Solder Field stadiums on top of six Soldier Field stadiums. |
 Thornton Composite Reservoir protects the Far South Side of Chicago and 13 surrounding suburbs from flooding. |
 Crews are working to have the first phase of McCook Reservoir in service in 2017 to hold 3.5 billion gallons of water. |
Gap Dam at the Thornton Composite Reservoir (under construction) |
 The McCook Reservoir in the background will connect to the Mainstream Tunnel System. |
 The McCook Reservoir will hold a combined 10 billion gallons of water between two phases of construction, and benefit 3.1 million people in 37 communities. |