Two dams in a park owned by a community association were damaged by storm flows. The lower dam was breached and required design alternatives for its removal; the upper dam had to be evaluated for repairs. D&K reviewed the structural elements of both dams, the retaining wall, and the stream character upstream and downstream. Our…
Storm flows from Jewell Brook in Ludlow are controlled by flood control dams (numbered 1, 2, 3, and 5) located in a rural, hilly, largely forested area. Previous evaluations of this system indicated that Site 1 had the potential for overtopping and the spillway design hydrograph would exceed allowable stresses at three of the system’s…
The Town of Fayston acquired a 93-acre hillside parcel, which was home to early successional habitat types and used by residents and visitors for passive recreation. By mapping the natural communities, water resources, and rare species on the parcel, D&K developed a framework to manage and conserve the Boyce Hill Town Forest.
The Norwich Reservoir Dam was a run-of-the-river, cyclopean concrete gravity dam located on the Charles Brown Brook. The dam impounded a reservoir which became silted in, and the dam served no useful function. The dam caused significant negative impacts to the brook and to downstream reaches. The dam blocked fish passage and caused downstream sediment…
Sweet Pond Dam is a 20-ft-high by 77-ft-long circa-1928 dam that impounds an 18-acre pond with a contributing drainage area of approximately 1 square mile. The dam sustained uncontrolled and excessive seepage through highly fractured and weathered bedrock and posed a barrier to AOP. D&K provided planning, evaluation, alternatives analysis, preliminary and final design, permitting…
Near Mt. Mansfield, Vermont’s highest peak, a 1.5-mile section of VT 108 traverses a mountain pass at 2,165 ft and provides trailhead access for the Long Trail, local crags, and other day-use areas. Increased use of the area led to on-street and off-street informal parking that, in turn, led to environmental, drainage, and safety issues….
The City of Providence undergoes chronic and damaging flooding in the urban center. D&K is developing a Watershed Plan Environmental Assessment document to identify flood mitigation strategies along the Woonasquatucket River. The plan considers the potential impacts of alternatives on environmental and social resources. Alternatives include lowering the grade of some floodplain areas to allow…
The Las Cruces International Airport (LRU) required a Master Plan to tie the airport’s use to the Las Cruces Innovation and Industrial Park and Spaceport America. In developing the Plan, D&K held multiple meetings with airport users, local businesses, and commercial space operators. LRU’s needs included the addition of a hotel, special-use space launch areas,…
Under a multi-year contract and an expedited schedule, DuBois & King provided guidance on planning, technical, environmental, and regulatory issues. Projects under this contract included a Capital Improvement Plan update, technical master plan update, runway extension, hangar area development, terminal apron expansion, Environmental Assessment, construction of a full parallel taxiway, snow removal equipment acquisition, a…