Drainage District No. 15

Iowa | Water

Overview

ISG innovated tile drainage infrastructure solutions to create a model for quality wetland restorations.


Opportunity

An Iowa Department of Agriculture pilot program provided the opportunity to design wetland mitigation that could be translated across the state.

Solution

Palo Alto County volunteered to be part of this pilot project with the Iowa Department of Agriculture to demonstrate a market driven approach that would improve both production and achieve significant environmental benefits through combining updates to tile drainage infrastructure with targeted water quality wetland restorations. This integrated approach was designed by ISG to reduce surface runoff that can lead to phosphorous and other agricultural chemical runoff as well as address the higher nitrate levels associated with tile drainage. Drainage improvements and a strategically located and sized wetland were placed in the watershed.

As one of five pilot projects of the Iowa Wetland Landscape Systems Initiative, this ISG designed project included construction of 0.70 miles of open ditch; 6.7 miles of tile; design and construction of a nutrient removal wetland encompassing 42.7 acres; 404 permitting with channel mitigation plan; and development and coordination with the Natural Resource Conservation Service (NRCS) for mitigation of farmed wetlands. This project provided the means to demonstrate that wetlands can provide mitigation, thereby making this market driven approach feasible for application across the rest of Iowa’s drainage districts that are nearing the end of their design life and will need to be modernized over the next few decades.


Market News

ISG Strategically Advances Environmental Service Expertise

July 23, 2020 (Bloomington, Minnesota) – ISG, a professional design and engineering firm made a strategic advancement to expand its services by welcoming Julie Blackburn as its new Environmental Practice Group Leader, out of the firm’s Bloomington office. Joining 300+ employee-owners including a team of in-house environmental scientists, Julie, the former Governor’s appointee to the Lessard-Sams Outdoor Heritage Council, brings over 25 years of passion for identifying environmental solutions and will guide the firm as it takes the next step in becoming an industry leader in environmental services.
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ISG Named Business of the Year by Grow Cedar Valley

June 22, 2020 (Waterloo, Iowa) – Based on its growing presence in eastern Iowa and efforts to give back to the community, ISG has received the 2020 Business of the Year Award from Grow Cedar Valley, an organization devoted to the growth of businesses in the region. ISG’s Waterloo office was honored as one of two businesses of the year (1-50 full-time employees), marking the firm’s growing impact in the region since expanding its footprint to Waterloo in 2018.
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