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Document Library

Click on links in the sidebar to see documents in that category.

Final report: mollusk survey results from 2021-2024 for four lakes task force by Central michigan university

12/18/2024

 
Mollusk Survey Results by Central Michigan University

GEI | Suspension & Need for Continued Dam Safety Improvements

10/10/2024

 
Memo from GEI to FLTF describing the dam deficiencies known shortly after failure and summarizing status at the point of temporary suspension.
READ HERE

Restoration progress Report 2024

9/5/2024

 
Restoration Progress Report for Gladwin and Midland Counties - Current Status Since the 2021 Feasibility Study
​See Restoration Progress Report webpage

StREAM STUDY ON WIXOM LAKE

12/7/2023

 
All documents are currently under review by EGLE and were submitted with the Permit Application

Part 301 Wixom Stream Mitigation
Appendix A
Appendix C
Appendix D

Restoration Plan Addendum: Status and Financing

4/7/2022

 
Restoration Plan Update: Status and Financing Plan (Chapters 10 and 11)

See original Restoration Plan published in May 2021

Secord and Smallwood Dams Summary of Semi-Quantitative Risk Analysis (SQRA)

2/18/2022

 
Read report summary

Sanford Dam Stabilization Project Summary

2/4/2022

 
​Following the flood of 2020, Four Lakes Task Force, as a sponsor to the NRCS EWP program entered into an agreement to stabilize the Sanford Dam. This stabilization project aims at restoring the Sanford Dam, consisting of the spillway and embankment, to a stable condition and rerouting the river back to its original pre-flood course. In addition, this project will reduce further erosion of the banks near the spillway and prevent continued deterioration of the site. The work done as part of this stabilization project will be utilized during the restoration project which is forthcoming in the following years. Like the Edenville Dam Phase I Sister Wall and Phase II Tittabawassee stabilization projects, GEI Consultants is the engineer of Record, Spicer Group is acting as the Owner’s Engineer and Fisher Contracting Company will be performing the construction work.
​
The scope of the project includes three phases: site preparation/access, modifications to the spillway, and installation of a sheet pile I-wall. A summary of each phase is as follows:

Read More

Sanford Dam interim Stabilization inundation Mapping

1/27/2022

 
Sanford Dam Stabilization Inundation Map

2021 Native Mussel Surveys of secord and Smallwood lakes

12/6/2021

 
During the summer of 2021, Central Michigan University researchers surveyed for native freshwater mussels. These are the results:
  • Story map of Secord and Smallwood lakes 2021 mussel surveys by CMU
  • Ava Laszlo’s technical talk about Secord and Smallwood lakes 2021 mussel surveys by CMU at the Canadian Freshwater Mollusc Research Meeting on December 7-8, 2021 (video below)

Read More

FLTF Response to Independent Forensic Team Interim Report

11/3/2021

 
FLTF Response to Independent Forensic Team Interim Report

Since the release of the interim Independent Forensic Team (IFT) report, Four Lakes Task Force and its consulting engineers have conducted their review of the report to get a better understanding of how the team formed its conclusions. In addition, we are nearing the 60% design phase of Secord and Smallwood and have major stabilization construction ongoing on Edenville to better inform ourselves on the condition of the dams....

Smallwood Dam Architectural Review History

10/27/2021

 
Smallwood Dam Architectural Review History performed by Merjent

Secord Dam Architectural Review History

10/27/2021

 
Secord Dam Architectural Review History performed by Merjent

Edenville Dam Architectural History Review

10/27/2021

 
Edenville Dam Architectural History Review performed by Merjent

Independent Forensic Team Interim Report

9/13/2021

 
Investigation of Failures of Edenville and Sanford Dams

Critical Issue #4 Flood Studies and DEsign Capacity

8/5/2021

 
Flood Study Summary

Design Flood Hydrologic Analyses

7/1/2021

 
Download here

Read More

Site-Specific Probable Maximum Precipitation Study for Tittabawassee River Basin

6/1/2021

 
Download here

Read More

Restoration Plan 2021

5/3/2021

 
Plan superseded by the 2024 Restoration Progress Report for Gladwin County and Midland County.

Plan for the Restoration of the Four Lakes of Gladwin County and Midland County
​
See Restoration Plan webpage

Plan updated 4/7/2022: Status and Financing Plan (Chapters 10 and 11)

Executive Summary of Flood Study and Conceptual Design Basis Reports by GEI

4/20/2021

 
Executive Summary of Flood Study and Conceptual Design Basis Reports by GEI

GEI Flood Study Report

4/9/2021

 
GEI Flood Study Report

GEI Technical Memorandum of Probable Construction Cost for Dams

7/13/2020

 
GEI Technical Memorandum of Probable Construction Cost for Dams

Updated April 23, 2021; This report is superseded by the GEI Flood Study Report

FLTF Flood Study Summary

7/2/2020

 
FLTF Flood Study Summary

Ayres Probable Maximum Flood Determination

5/15/2020

 
Ayres Probable Maximum Flood Determination

Read More

Secord Dam Preliminary Design and Engineering Report Submitted to FERC

4/27/2020

 
Secord Dam Preliminary Design and Engineering Report Submitted to FERC

Four Lakes Lake Level Study​​

4/1/2019

 
Four Lakes Lake Level Study​​

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©2025 | Four Lakes Task Force is a US 501 (c)(3) public charity, EIN 27-4698447. This institution is an equal opportunity provider.
Four Lakes Task Force
  • About
    • History
    • Who We Are >
      • Team Bios
    • Operations
    • Secord Dam
    • Smallwood Dam
    • Edenville Dam
    • Sanford Dam
  • Restoration Progress Report
  • Donate
    • Why Donate?
    • Our Donors >
      • Corporate Sponsors
      • Individual Donors
    • Four Lakes Legacy Society
  • Events
  • Documents
    • Annual & Quarterly Reports
    • Audited Financials
    • Dam Construction Updates
    • Engineering Reports & Studies
    • Flyers & Brochures
    • Meeting Presentations
    • News Flashes & Newsletters
    • Published Statements
    • Restoration Plan 2021
    • Tax Filings & Governance
  • Resources
    • Erosion Control >
      • Project Map
      • Project Permitting
      • What You Can Do
    • FOIA Request
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    • Lakebottom Information
    • Subscribe
    • Updates
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  • Contact