D&K water resource professionals are thoroughly familiar with the hydrology, hydraulic, and physical characteristics of the Northeast. Our teams include fluvial geomorphologists, wetland scientists, hydrologists, and hydraulic engineers who are supported by permitting specialists, structural engineers, construction phase staff, land surveyors, and landscape architects. We offer a comprehensive understanding of state and federal regulations and…
A recently completed Hazard Mitigation Plan identified flooding as a high risk for the County. Since 1996, approximately 50 flooding events occurred in the County, including flooding from an ice jam in January 2018 and heavy rainfall in August 2018. As a JV team partner, D&K conducted a Supplemental Watershed Plan and Environmental Document (Plan-ED) for…
The Mad River Valley is a rural though populous region characterized by steep slopes, narrow river channels, and a relatively high level of transportation infrastructure and building stock along valley floors and roads accessing resort areas. D&K worked with the CVRPC to survey the area and develop a study that cataloged the hydrology and hydraulics…
The Baker River Site 8 dam is a 1,462-ft-long by 63-ft-high dam with a maximum storage capacity of 4,750 acre-ft and is fed by a 15.58-sq.-mi. drainage area. The dam uses a vegetated auxiliary spillway to pass high flows, and the main spillway system consists of a concrete riser and a small stilling basin. Constructed…
The Hooksett Hydroelectric Project includes a 1.6 MW run-of-the-river hydroelectric power generation dam that is a barrier to aquatic organism passage (AOP), including Blueback Herring, American Eel, and American Shad. D&K worked closely with officials from the U.S. Fish and Wildlife Service and the National Oceanic and Atmospheric Administration regarding the details of the design,…
Following the inception of Vermont’s Three-Acre Stormwater Rule, schools throughout Vermont needed to adapt their campuses to manage stormwater in accordance with Vermont Stormwater General Permit 3-9050. To help schools successfully manage these challenges, D&K has provided engineering and environmental services for feasibility studies and the design of stormwater improvements for five schools. The projects…
Located on the Otter Creek, the Huntington Falls Hydroelectric Project is a historic facility that required redevelopment. The D&K team assessed the two non-operational turbines and related appurtenances, the trash rack, and raker upgrades to the Unit 3 turbine following FERC relicensing. Additional D&K services included design and coordination to upgrade all three turbines, resulting…
The Neshobe River crosses through the heart of downtown Brandon, and the historic stone masonry bridge carrying Central Street/US 7 and numerous utilities had a history of substantially inadequate hydraulic capacity. As a demonstration of this issue, the town opened the front and rear doors of the adjacent town offices during a large storm event…
Heavy rainfall and substantial snowmelt from a storm event combined with insufficient drainage systems to wash out 2,800 LF of a vital roadway crossing a mountain. The steep and winding road serves approximately 1,400 vehicles per day and connects VT 100 and VT 12. The Town of Rochester applied for and received FHWA-ER funding to…