Wahpeton Water Tower

Wahpeton, Ia | Water

Overview

ISG designed a new water tower to increase the City of Wahpeton's (the City’s) water supply capacity during peak summer months, while simultaneously meeting chlorine contact time (CT). Mixing and recirculation was also evaluated and designed to control the formation of disinfection by-products (DBPs) within the increased volume of the new water tower.


Opportunity

Located on the popular West Lake Okoboji, the City struggled to provide consistent water service to its community during the summer months, due in large part to their water tower’s limited holding capacity of 50,000 gallons. Rather than continuing to supplement water use from a nearby community, the City decided to increase its water storage capacity, capitalizing on its proximity to Iowa’s second largest fresh water source and its own treatment plant.

Solution

To meet the City’s year-round water supply demands, ISG was charged with designing and overseeing the construction of a new 200,000-gallon water tower to replace the existing 50,000-gallon tower. Planning and design for a water tower with inconsistent water demand posed some challenges, as water with older water age has the potential for DBPs to form and compromise water quality. Applying innovative solutions, ISG’s water solutions experts integrated a Tideflex mixing system into the final design that utilized a recirculation pump to create active mixing and accounted for swings in water storage needs and usage throughout the year. To ensure the City satisfied the strict CT requirements that were needed due to utilizing a surface water treatment system from West Lake Okoboji, the plant was reclassified from a direct to a conventional filtration facility.


Market News

Mankato MoonDogs’ Franklin Rogers Park to be Renamed ISG Field

October 20, 2020 (Mankato, Minnesota) – Building on a series of successful partnerships and projects to bolster its ballpark, the Mankato MoonDogs, a member of the Northwoods League, has exercised its rights with the landlord, the City of Mankato, to lease the naming rights of Franklin Rogers Park to ISG. The ballpark will be named ISG Field after the professional design and engineering firm that was founded in Mankato in 1973. ISG Field represents the MoonDogs’ commitment to providing top quality local baseball and an enriching fan experience. This is the latest update for the team, which has unveiled a new logo and has implemented several renovations for the ballpark in recent years.
Read More

ISG Accelerates Growth with New Office in Rochester, Minnesota

October 13, 2020 (Rochester, Minnesota) – ISG, a leading professional design firm in architecture, engineering, planning, and environmental solutions, announces plans to open a new office in Rochester, Minnesota. The addition will allow the firm to better serve its existing and growing client base and leverage the area’s diverse talent pool. The office will be the firm’s fourth location in Minnesota, adding to its six other offices across the Midwest in Wisconsin, Iowa, and South Dakota.
Read More