Head of Lake Pepin Problem Appraisal Report (DRAFT)

By: Lake Pepin Legacy Alliance & MN Audubon

The Army Corps of Engineers (ACOE) starts all restoration projects with a PAR that examines habitat conditions before a project. To ensure Lake Pepin restoration was considered for a federal restoration project, LPLA and MN Audubon completed this step on their own. ACOE used this draft PAR to obtain approval from department leadership to move the process forward.

Download here.

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Lake Pepin Excess Nutrients TMDL

By: Minnesota Pollution Control Agency, TBD

Addresses the Lake Pepin water quality impairment making it unsuitable for swimming and fishing

  • Examines the sources of phosphorus and nitrogen that contribute eutrophication

  • Relates closely to Lake Pepin sedimentation because phosphorus binds to soil particles

  • Project Underway

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South Metro Mississippi Turbidity TMDL

By: Minnesota Pollution Control Agency, 2015

Addresses the accelerated sedimentation in Lake Pepin.

  • Examines the reach of the Mississippi River impaired for turbidity upstream of Lake Pepin

  • Determines that the Minnesota River Basin (MRB) contributes 75% of the sediment

  • Requires the following sediment load reductions:

    • 50% reduction from Minnesota River

    • 50% reduction from the Cannon River

    • 20% reduction from the Upper Mississippi River, St. Croix and Vermillion Rivers

    • 50% reduction in internal sediment loading within Lake Pepin

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