12-Mile Creek Watershed Plan/Wright County Ditch No. 10

Wright County, MN | Water

Overview

ISG provided a comprehensive Multipurpose Drainage Management (MDM) Plan encompassing water quality designs and solutions for diversified drainage systems, throughout the 12-Mile Creek Watershed and County Ditch No. 10 (CD10) located in Wright County, Minnesota.

Opportunity

The rehabilitation and repair of Wright CD10, provided the opportunity to develop a comprehensive watershed plan for the 12-Mile Creek Watershed to improve water quality for surrounding water sources.

Solution

ISG performed an inventory and MDM Plan of the 17,000-acre 12-Mile Creek Watershed resulting in a comprehensive watershed plan that encompassed water quality practices in a rural drainage system. Taking advantage of ISG’s in-house applied technology, a variety of tools and methods were used to capture data including a topographic survey, drone videos, aerial photos, LiDAR, ESRI ArcMap, and site visits. The water resources team developed a large XPSWMM model to review several alternatives to include in the project. Calculations analyzed existing drainage capacities throughout the system, potential storage and treatment areas, and potential reduction of nutrients and sediment to improve water quality downstream.

Grant funding was awarded for large impoundments, sediment control practices, and upland practices. Using best management practices including Alternative Side Inlets, buffer strips, and a large impoundment, ISG was able to further maximize water quality by minimizing runoff, providing additional time for sedimentation and pollutant reduction.

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