An aging concrete and masonry dam was deemed structurally deficient by state regulators, and the owners could not justify the expense of reconstruction. D&K connected the owners with the NRCS to fund the construction, which included the removal and disposal of the dam and active restoration of the stream channel. Our team designed the removal…
The Cabot-Danville US 2 Segment 1 highway stormwater improvements included relocating a reach of Molly’s Falls Brook. The project required site inspection coordinated with the Vermont Agency of Natural Resources District Fisheries Biologist, Stream Alteration Engineer, and VTrans representatives. To relocate the brook, D&K collected site data and developed a design utilizing hydraulic engineering and…
D&K provides civil, structural, mechanical, water resource, dam, environmental, and geotechnical engineering and permitting assistance to support maintenance and upgrades to a Northeast-focused hydroelectric utility. Project types include penstock inspections, power generation and project redevelopment studies, new fish passage systems, fish passage system maintenance, FERC licensing support services, permitting assistance, survey, substation and lattice structure…
Green Mountain Power (GMP) is a private electrical utility provider that maintains much of Vermont’s electrical distribution and hydroelectric power-generating infrastructure, solar farms, and natural gas cogeneration facilities. As GMP has grown through expansions and small utility provider acquisitions over the past 20 years, D&K has supported approximately 200 projects, and we continue to provide…
Patriot Hydro sought the operational and maintenance benefits of converting water-level controls from timber flashboards to a remotely operated inflatable bladder system at a 12.4-MW hydroelectric project. An unusual amount of woody debris had accumulated in the facility’s intake channel. D&K evaluated the dam and hydrologic and hydraulic conditions to determine the feasibility of installing…
To understand existing conditions and evaluate opportunities to upgrade the facility, D&K supported Patriot Hydro by providing an evaluation and designing upgrades of the 1.6MW Hooksett Hydroelectric Project. The team assessed existing conditions, including civil-structural, equipment, hydrologic and hydraulic, and natural resources. D&K also completed an electrical generation study that identified ways to optimize the…
The Town of Chester needed to address hydraulic capacity and condition issues associated with a 165-ft-long by 15.5-ft-high earthen dam with a concrete spillway impounding a small recreation pond. The site was constrained and funding for the project was limited. As Town Engineer, D&K evaluated the dam, watershed, and natural resources, developed alternatives, and provided…
The Town of Swanzey needed to improve the stability and safety of an earthen dam serving an 80-acre pond. The pond supports recreation and enhances the value of the homes located along its shoreline. The dam had seepage issues and did not meet current dam safety standards. Using articulated concrete blocks as overtopping protection, DuBois…
In the aftermath of Tropical Storm Irene, many roadways throughout Vermont were severely damaged due to flood waters from adjacent streams and rivers. For four sites along VT 100, 100B, 14, and 125, D&K designed slope stabilization and appurtenant roadway repairs; for a site on VT 125, D&K designed a small box culvert replacement. For…