Lake George Dam and Rum River Erosion

Project Details by Fiscal Year
2019 Fiscal Year Funding Amount
$539,000
Fund Source
Outdoor Heritage Fund
Recipient
Anoka County
Recipient Type
Local/Regional Government
Status
In Progress
Start Date
July 2018
Activity Type
Restoration/Enhancement
Counties Affected
Anoka
Legal Citation / Subdivision
ML 2018, Ch. 208, Art. 1, Sec. 2, subd 5(m)
Appropriation Language

$539,000 the second year is to the commissioner of
natural resources for an agreement with Anoka
County to enhance aquatic habitat in and adjacent
to Lake George in Anoka County and to restore and
enhance aquatic habitat on the Rum River. A list
of proposed habitat enhancements and restorations
must be provided as part of the required
accomplishment plan.

2019 Fiscal Year Funding Amount
$539,000
Other Funds Leveraged
$135,400
Direct expenses
$539,000
Administration costs
$0
Number of full time equivalents funded
0
Proposed Measurable Outcome(s)

Protected habitats will hold wetlands and shallow lakes open to public recreation and hunting - Measurements are made as to acres of wetland habitat hydrology maintained (150 acres) and Lake George littoral zone preserved (88 acres) for the dam replacement and a decrease in sediment loss of 285 tons per year for the river bank stabilization component..

Source of Additional Funds

County Operating Budget, County Equipment / Operating Budget

Project Overview

This proposal will address two separate problems: the eminent failure of the Lake George dam and two severe erosion sites on the Rum River at Rum River Central Regional Park. We propose to replace the current failing sheet pile dam with a new dam that allows for fish passage on the outlet of Lake George. We also propose to repair two river bank erosion sites rated as 'Severe' totaling approximately 625 feet on the Rum River which will reduce sediment loading into the river by 285 tons per year and will provide improved in stream fish habitat.

About the Issue

The existing sheet pile dam will be removed and a new dam, with fish passage capabilities, will be installed. Upon completion of the dam, the disturbed area will be seeded and native tree and shrub species will be planted. This project will maintain the present dam elevation which supports and preserves 495 acres of lake habitat, 150 acres of wetland habitat. This repair will also provide fish passage habitat. The habitat supported by this project provides fish spawning and nursery areas, waterfowl nesting, brood rearing and migration along with nesting and wintering cover for upland game birds. The two Rum River erosion sites will require excavation to establish a more favorable slope. The toe of the slope will be structurally reinforced to prevent further degradation of the slope and loss of soil into the river. The resulting decrease in soil loss will improve spawning habitat in the stream through reduced sedimentation and will improve water clarity and help to moderate water temperatures and improve summer dissolved oxygen levels. The reinforcement will end at the normal high water mark, above which native grasses, forbs trees and shrubs will be planted.

Project Manager
First Name
Glenn
Last Name
Fuchs
Organization Name
Anoka County Parks
Street Address
1350 Bunker Lk Blvd
City
Andover
State
MN
Zip Code
55304
Phone
(763) 324-3413
Email
glenn.fuchs@co.anoka.mn.us