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TVWD, Grabhorn Reservoir


The Keller team partnered with Emery and Sons Construction to complete the Grabhorn 5MG Reservoir, Valve House, and Pipelines. The project includes 8-inch to 24-inch ductile iron pipe, HDPE pipe, seismic resiliency provisions, air release and surge relief provisions, and steep slope installations. Project challenges included: extensive permitting and stormwater requirements, rock removal, 40+ foot excavation depths, schedule constraints, construction adjacent to existing residences, and a sensitive stream/vegetative corridor.

Services Provided:
  • Reservoir site grading and drainage
  • Abandonment of existing vaults, piping, and confined space
  • Large diameter water pipeline
  • Pipeline construction in roadway
  • Structural (valve building), electrical, and instrumentation and controls
  • Complex geotechnical investigation and design
  • New reservoir
  • Innovative design approach