Klondike Clean Water Retention Project #11
About Klondike Clean Water Retention Project #11
Description/Location: The 7,600 acre multi-purpose resource project is located 10 miles east of the City of Lake Bronson, MN and 4 miles north, covering nearly 12 square miles on the Kittson and Roseau County line. It is planned to have gated storage of up to 37,250 acre feet from a 191.5 square mile upstream drainage area, include 8 miles of diked inlet channel, up to 6 miles of diversion channels, a 17 mile long dike, and an average dike height of 6 feet.
Problem: Large scale overland flooding is a common occurrence from the City of Badger and west to the Kittson & Roseau County line along 18 linear miles of Lateral 1 of State Ditch 95. Undersized channel capacity and the slope of the landscape contributes to out of bank flows and overland flooding on a large scale. In large flood events, water overflows out of the Roseau River and enters the Two Rivers Watershed District via State Ditch #72, exacerbating the problems. Impacts occur to public roads and infrastructure, loss of agricultural crops, and farmsteads. Roads can be closed for several weeks at a time.
• Flood Damage Reduction (Primary Objective): Store up to 30,000 acre feet of floodwater and reduce downstream duration of flooding and peak flows; Provide an adequate outlet for Lateral 1 of State Ditch #95; Prevent flooding on over 25 square miles of agricultural land; Reduce damages to County & Township roads and bridges, Reduce Two Rivers contribution to the Red River flood by 15-20%; Reduce peak flows to Lake Bronson by 13%
• Water Quality: Water quality impairments are listed for the North, Middle, and South Branches of the Two Rivers for biota, E-coli and turbidity. Large algal blooms currently occur downstream at Lake Bronson State Park, and low dissolved oxygen levels have been documented. By impounding water, this project will be designed to reduce sediment and nutrient loading to the South Branch Two Rivers, thereby reducing the occurrence of algal blooms in the lake. Rock riffles will be constructed to add oxygen to downstream water bodies.
• Stream Flow Augmentation: The South, Middle, and North Branches of the Two Rivers typically experience late summer and fall extreme low flows, and sometimes they even go dry. This has a detrimental stressor effect on the fish and other organisms. This project could be implemented to provide a source of stream flow during the times of low flow.
• Habitat Enhancement: The project area encompasses over 7,600 acres, most of which used to be farmland. Normal operation of the impoundment will be to flood the area during spring snowmelt and summer rains and slowly drain it down after flood peaks have passed. This will provide a large habitat block to enhance nesting areas and habitat for waterfowl. The site is adjacent to a 'prairie rich fen', and therefore cessation of farming practices and land retirement will help to protect and enhance the integrity of the nearby fen. A fen plan has been written jointly with the MN DNR to guide management of the prairie rich fen. Wetland restorations, fish habitat, and other project components are currently being studied to provide additional ecological benefits.
Cost Estimate $32 Million
State: Between 50% ($13,000,000) and 75% ($19,500,000)
Non-State: Red River Watershed Management Board $7,200,000 ($5M awarded to date) and Two Rivers Watershed District $5.2M
USDA: $ 500,000 grant awarded
Enbridge: $ 100,000 grant awarded
FDRWG: $ 30,000 grant awarded
Other Possible Sources: LSOHC; Clean Water Funds; Federal Grants; etc
Timeline if funded
Final Plans and Specifications 90% complete by March 1, 2020
Permitting complete by December 31, 2020 (EAW, USCOE, WCA, SHPO, 103E ditches)
March – May 2021 let bids
Phase 1 Construction 2021-2022
Phase 2 Construction 2022-2023
$6.6M prior; $1.4M in 2020; $12M in 2021; $7M in 2022; $5M in 202
For a copy of our engineer's report, click here.