The Shores Reservoir Complex Longmont, Colorado
The Shores Reservoirs comprise a complex of four below-grade, lined, water storage
reservoirs constructed in conjunction with aggregate mining activities. The site of
the reservoirs is located near the St. Vrain River in Weld County, Colorado just east
of Interstate 25.
Soil-bentonite slurry wall reservoir liner system under construction.
Reservoir liners include compacted earthen embankment slope liners and soil-bentonite
slurry wall lining systems. In total, over 25,000 linear feet of reservoir liner have
been constructed. Design challenges include coordinating the reservoir construction with
existing irrigation ditch facilities. Eight existing ditches and irrigation laterals cross
the property. Relocation of ditch diversion structures, design and construction of new
laterals and diversions to fill the reservoirs, and configuration of the reservoir layouts
required careful consideration and coordination with ditch company boards and individual
owners.
Federal permits, including U.S. Army Corps of Engineers' 404 permits were required.
Deere & Ault designed the reservoir liners, prepared plans and specifications, and
provided construction engineering and quality control for all phases of the reservoir work.
In addition, Deere & Ault designed and provided construction engineering for
interconnects between the reservoirs. The interconnect conduits were constructed by
horizontal directional drilling conduits between the reservoirs. The conduits were grouted to
prevent seepage. Slope stem operators and slide gates were installed on each end of the
conduits to control and/or regulate flows between the reservoirs.
Deere & Ault also developed and completed leak tests for the reservoirs; analyzed
and designed all hydraulic facilities for checks, turnouts and inlets; and assisted in the
project permitting.
Final reservoir storage along with the filling and interconnect facilities will be owned by
Central Colorado Water Conservancy District. The projected total water storage volume will
be approximately 4,800 acre-feet.
Client: Lot Holding, LLC (a Division of Hall-Irwin Construction)
600 South Airport Road -- Suite A-205 -- Longmont, Colorado 80503
Phone (303) 651-1468 -- Fax (303) 651-1469
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