Tetra Tech INCA was selected to perform the work for the Chicago Underflow Plan, McCook Reservoir which involved detailed design of high pressure slide gates and appurtenances and preparation of drawings for the manufacturing / fabrication of:

• Four 5-foot by 5-foot high pressure bonneted slide gates designed for 690 feet of head;
• Two reservoir and two tunnel flanged transition liners, 5-foot square to 5-foot round;
• Two 5-foot square flanged liners with 3-foot diameter air vent connections; and
• Fifteen 5-foot diameter flanged pipe sections, four with manholes, designed for 690 feet of head.

 Chicago Underflow Plan for McCook Reservoir (195.56 kB)

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