Relevant Projects
Florida Outfall – Broadway Basin for City and County of Denver. Mr. Cotton provide detailed hydrologic modeling and hydraulic calculations for the new Florida Outfall and contributing Broadway Basin. Mr. Cotton significantly enhanced the detail the planning UD-SWM model by using the EPA EXTRAN version of SWMM. Additional detail on interior subbasin flow splits that affect the pattern of runoff to Broadway was added. Hydraulic calculations of hydraulic grade were conducted using full dynamic routing.
University – Mexico Basin Master Planning for City and County of Denver. Mr. Cotton developed detailed hydrologic models for planning of drainage facilities for the University – Mexico drainage basin. Building on his modeling and design for the T-REX project, Mr. Cotton developed existing and alternative scenario hydrology. Particular effort was spent to model conditions in the Broadway basin that was subject to frequent flooding that caused damage to local businesses. Mr. Cotton developed alternatives that used surface and in-line detention, and that evaluated various outfall alignments and use of existing storm drainage systems.
T-REX Interstate-25 Segment 1 "The Narrows" for the Colorado Department of Transportation and Regional Transportation District. Mr. Cotton was the lead hydraulic engineer for the design and construction of drainage systems in Segment 1 of the T-REX project. He has made extensive use of XP-SWMM (a full dynamic version of SWMM) for master planning in the corridor. He is responsible for over a dozen major hydraulic designs that include the tunnel outfall to the South Platte River, the North Buchtel Interceptor, the Cook Interceptor, the I-25 Outfall, and modifications to the existing Arizona Outfall.
Broadway Underpass Pump Station Design for the City and County of Denver, Colorado. Mr. Cotton was the lead hydraulic engineer for preparation of design plans, specifications, and cost estimates for the new underpass pump station. The innovative use of underground vault storage significantly reduced the capitol cost and expected operating cost of the pump station. The pump station consists of duplex pumps in a 15 meter wet well with a maximum pump rate of 1700 liters/minute, automated controls, backup diesel power generator, and a storm water storage vault with a 270 cubic meters capacity.
Broadway Viaduct Phase One Design for the City and County of Denver, Colorado. Mr. Cotton was the lead hydraulic engineer for preparation of design plans, specifications, and cost estimates for a 900 meter major outfall to the South Platte River from lower downtown Denver. The outfall consists of pre-cast box culvert (3660 mm by 2440 mm) with a transition to a 2700 mm reinforced concrete pipe. Maximum capacity of the system is 31.2 cms. The main intake structure located at 26th Street and Blake has a maximum capacity of 26.0 cms.
Broadway Viaduct Drainage Basin Master Plan for the City and County of Denver, Colorado. Mr. Cotton was the lead hydraulic engineer for a comprehensive evaluation of major drainage facilities for the protection of the proposed Broadway underpass in lower downtown Denver, near Coors Field baseball stadium. Planning for the facility included public involvement; coordination with local, state and federal agencies; and preliminary design.
