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Spillways & Hydraulic Structures

ASI personnel have worked on dozens of spillways – from construction to removal and replacement – and we have constructed and maintained fixed crest spillways, concrete structures, training wall, and hydraulic, electric, and manually actuated gates and valves.

The majority of existing dams that are in excess of 25 years old were constructed at a time when spillways and hydraulic structures were designed to pass floods smaller than what modern studies show is possible. Also, as populations grow, more and more people are living downstream of existing dams, which often requires their spillways to be upgraded.

Some of the spillways and hydraulic structures projects that ASI personnel have completed are found listed below:
  • Modifications to the Lake Ogletree Spillway, AL
  • Stagecoach Spillway Replacement, Tacoma Hydroelectric Project, CO
  • Terrace Reservoir Spillway, CO
  • INAAP Process Waste Dam, IN
  • Marrowbone Dam #1 Modification, VA
  • Yellow River Dam Y-17 Rehab, GA
  • Salado Creek Watershed Dam 15R, TX
  • Lake Brandt Dam Rehabilitation, NC
  • Leyden Dam Improvements, CO
  • Wesley Seale Dam Spillway Rehab, TX
  • Pueblo Dam Modification, CO
  • Milton Seaman Spillway Rehab, CO
  • McClure Reservoir Spillway Mod, NM
  • Mountain Home Reservoir Rehab, CO
  • Umbarger Dam Modification, TX
  • Fort Peck Plunge Pool Rehabilitation, MT
  • Medina Dam Outlet Replacement, TX
  • Gross Dam Auxiliary Outlet Works, CO
  • Grizzly Dam Outlet Works Rehab, CO
  • Canton Lake Dam Weir & Hydraulic, OK
  • Antero Dam Outlet Replacement, CO
  • LaJara Lake Dam Modification, NM
  • Piedra Liza Dam, NM
  • Big Lake Dam, Dobbins AFRB, GA
  • Yellow River Dam Y-15 & Y-16, GA
  • Dog River Dam, GA
  • SDS Pueblo Dam Connection, CO
  • Upper Brushy Creek Dam 7 Modernization, TX