Outlet Channel

Maintaining an unimpeded flow from Big Marine Lake through Little Carnelian Lake and the outlet pipe to the St. Croix River is a critical responsibility of the Watershed District.  CMSCWD was formed to reduce the threat of flooding in Big Marine and Carnelian Lakes and the solution was the result of many years of study of the causes to these water fluctuations.  Some of the reports that examine the causes of these water fluctuations are:

The range of elevations that the District maintains is a result of negotiations with riparian property owners and the Department of Natural Resources to both protect property and protect wetlands within the watershed.  The only variable in the system is an adjustable weir downstream of the fixed outlet and Turtle Lake.  The current management plan for the weir has evolved over the years and was approved by the Board of Managers on April 12, 2017 after receiving considerable public input. The management plans are available for review here, from the current plan to the original management plan:

                       

Big Marine Lake Outlet Elevations

Yellow designates at or over weir elevation

(Turtle Lake Stop Log status)

  fixed Weir Overflow elevation is 940.8 feet

Date

Upstream of Weir

Downstream of Weir 

April 11 941.01 940.46  (all stop logs out)
April 25 941.17 941.02
May 4 941.17 941.01
May 14 941.07 940.44
May 23 940.97 940.24
May 30 941.05 940.54
June 5 941.01 940.54
June 15 940.91 940.3 (both sets stop logs in)
June 21 941.01 940.81
June 27 941.01 940.88
June 28   (1 side/ both stop logs out)
July 3 941.01 940.82
July 12 940.93 940.54
July 19 941.02 941   (both sets of stop logs out)
July 30 940.89 940.6
August 7 940.93 940.4
August 20 940.75 940.2   (both sets of stop logs in)
Sept 7 940.83 (beavers) 940.48
Sept 21 941.03 940.91  (3 stop logs out)
Sept 24 940.97 940.78
October 16 941.07 940.92   (all stop logs out)
October 29 941.01 940.64
Nov 11 941.01 940.60
 
2017 Data
2016 Data

Pages 22 through 29 in Section IV of the Management Plan discusses the maintenance activities in further detail.  A history of water elevations of Big Marine Lake is available here.

The following is a log of this year's maintenance activites for Carnelian Creek (Big Marine Outlet Channel) and Silver Creek.  Most of the activities are directed toward the former: Previous Maintenance Logs: 2016     2017

.

2018 Channel Inspection/Maintenance Log

Task

Date

Hours

Meeting with excavator

1/26/2018

0.5

meeting Prep re: Kelly Farm

2/1/2018

1

May Township Board meeting re: Kelly Farm

2/1/2018

2

Meeting Follow-up

2/2/2018

0.5

Both Sets of Boards removed

3/27/2018

1

Inspection- Water Levels Big Marine

4/11/2018

0.5

Little Carnelian Clean out and water levels

5/1/2018

1.5

Website Update

5/14/2018

0.5

Inspection-Water Levels at Big Marine

5/14/2018

0.5

Water Levels, Kelley inspection, Little Carnelian

5/23/2018

2.5

Inspection-Big Marine

6/5/2018

0.5

Inspection-Little Carnelian Outlet

6/7/2018

1.5

Inspection-Little CArnelian Outlet

6/13/2018

0.5

Inspection-Big Marine Levels

6/13/2018

0.5

Inspection-Big Marine and Weir

6/15/2018

1.5

Inspection-Big Marine Weir Elevations

6/21/2018

0.5

Inspection-Water levels Big Marine and Kelly

6/27/2018

1

Inspection-Turtle Lake Weir and  Little Carnelian

6/28/2018

1.5

Inspection-Little Carnelian and Big Marine

7/3/2018

1

Update Website

7/9/2018

0.5

Inspection-Carnelian Creek Outlet

7/19/2018

1

Little Carnelian Outlet Clean

7/19/2018

0.5

Kelly Farm- Weir and inspections

7/19/2018

1

Inspection-Big Marine Water levels

7/19/2018

0.5

Check data for weir elevations

7/19/2018

0.5

Inspection-Little Carnelian/Carol Lake Outlets

7/25/2018

1

Little Carnelian Inspection

8/8/2018

1

Alyssa Soderlund request

8/13/2018

0.5

Inspection-Website

8/15/2018

0.5

Turtle Lake Weir log in

8/17/2018

1

Inspection-Big Marine Weir

8/20/2018

0.5

Little Carnelian Outlet Check

8/22/2018

1

Roger Rydeen at Kelly Farm

8/30/2018

1

Water Levels- District

9/7/2018

1

Randall Simonsen Beavers

9/24/2018

0.5

Water Levels- Vennowitz- Long-Big Marine

9/24/2018

1

Inspection-Little Carnelian Outflow

9/27/2018

1

Channel Maintenance- Kelly Farm

10/16/2018

1.5

Water Levels and Channel Maintenance- District

10/16/2018

1.5

Channel Maintenance- Osceola Hardware

10/17/2018

1

Kelley Farm Maintenance

10/18/2018

3

Water Levels and S. Twin Inspection

10/29/2018

1.5

Water Levels Big Carnelian and Big Marine

11/12/2018

1

Inspection-Big Marine Water Levels

11/26/2018

0.5

Inspection-Little Carnelian Outlet

11/26/2018

1

Some other documents and reports dealing with the Big Marine Outlet Channel are listed below: