CSAH 82 Stormwater Analysis and Storage

Mapleton, MN | Water

Overview

ISG completed the Hydrologic/Hydraulic study for Blue Earth County Public Works on the reconstruction of CSAH 82 in Mankato, MN. The project included the reconstruction of culverts under the highway to provide drainage to approximately two thousand acres of Urban and Rural areas including Blue Earth County Ditch 12, Wilson Creek and portions of MnDOT Trunk Highway 22.


Opportunity

Working with the City of Mankato, Private Developers, and the County, a drainage system was established utilizing in-channel storage, a created wetland and a two celled/two stage pond system, the peak flows were reduced and the culverts were sized accordingly to protect the highway and the land downstream. Portions of the system were planted with native species that have thrived while further stabilizing CSAH 82 from flooding events.


Market News

ISG Adds Minneapolis Architecture Expertise

March 20, 2020 (Minneapolis, Minnesota) – In an effort to strengthen services for a wide range of partners in the Twin Cities and across the Midwest, ISG is joining forces with Architects Rego + Youngquist, LLC. (ARY) of St. Louis Park, Minnesota. As a premier provider of design services in the education, civic and cultural, and healthcare markets, ARY’s talented professionals will add a wider breadth of expertise as they are integrated into ISG’s multi-disciplinary team.
Read More

ISG Water Solutions Team Amplifies Resources, Adds Strategic Talent

January 28, 2020 (Storm Lake, Iowa) – ISG, a professional design and engineering firm that is 100% owned by employees, recently expanded its Water Solutions Group by welcoming long-time Iowa Department of Natural Resources (IDNR) leader Julie Sievers. Ready to embark on this new endeavor with ISG as Senior Water Specialist, Julie will complement a seasoned group of professionals, including internationally recognized Water Solutions Group Leader and Associate Principal, Uma Vempati, PE, PMP, ENV SP, Iowa project leader and Associate Principal, Tom Grafft, and many others within the firm of 315+ professionals.
Read More