Helena Valley Pumping Plant and Tunnel: Constructed 1957-1959, Missouri River Basin Project, Montana |
Common terms and phrases
92-inch butterfly ARGILLITE BASIN PROJECT-MONTANA HELENA blockout BUREAU OF RECLAMATION butterfly valves Canyon Ferry Dam circuit cofferdam Combined bend construction contractor control cabinet core crane DENVER designed DIVISION HELENA VALLEY downstream draft tube elevation equipment ERECTION FIXTURE excavation Expansion joint FALLS DIVISION HELENA Figure firehose flange floor grout guide bearing head Helena Valley Canal HELENA VALLEY PUMPING Helena Valley Tunnel hoist holes HORNFELS hydraulic inlet INTERIOR BUREAU irrigation Lake Helena loads located MISSOURI RIVER BASIN motor operating penstock and discharge Pier Piezometers PLANT STEEL PENSTOCK pounds per square pressure Prickly Pear PROJECT-MONTANA HELENA VALLEY PUMPING PLANT STEEL pumping units RECLAMATION MISSOURI RIVER regulating reservoir reinforcement ring RIVER BASIN PROJECT-MONTANA rock Rocker SCALE OF FEET second-feet SECTION A-A shown square inch STEEL DISCHARGE PIPE stem structural steel stuffing box sump supports switch temperature UNITED STATES DEPARTMENT unwatering VALLEY PUMPING PLANT vertical welded wicket gates