Rusin & Herrala River bank stabilization
In 2008 two water quality improvement projects utilized LRRWMO cost share
funds. The projects were on adjacent properties, resulting in 158 continuous
feet of Rum Riverbank erosion correction. One of the property owners also
will do additional work in 2009 to repair minor erosion higher on the bluff.
Both property owners received 50% cost share grants for materials and received
a no-cost work crew through Minnesota Conservation Corps with State of Minnesota
funds.
At both the Herrala and Rusin properties cedar tree revetments were used
to correct streambank erosion and prevent future erosion. This technique
involves anchoring cut cedar trees tightly along the bank. The dense branches
simultaneously protect the bank from high flows and allow sediment to settle
behind the trees during lower flows. Cedar trees are chosen because they
are resistant to decay and have dense branches. Trees for these projects
were harvested at no cost from a county park and a private property. Installation
of this project was coordinated with the lowering of the Anoka dam for maintenance,
making installation easier.
Rum Riverbank Stabilization – Herrala and
Rusin Properties – Cedar tree revetments were installed during river
drawn down for Anoka Dam maintenance. Duckbill anchors and galvanized cable
secure the cut trees to the bank.
