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Stabilizing Your Shoreline to Prevent Erosion Page 1 of 6 <br /> UNIVERSITY OF MINNESOTA EXTENSION <br /> WW-06946 Reviewed 2008 <br /> • „mfr <br /> -_, Az...---,e, ' Stabilizing Your Shoreline to Prevent Erosion <br /> i ,,1 — <br /> `�'�� Shoreland Best Management Practices <br /> our..►z- Number 7 of 18 in the Series <br /> waters <br /> What Are Shoreland BMPs? <br /> Best Management Practices (BMPs) are actions you can take to reduce your impact on the environment. <br /> BMPs have been described for agriculture, forest management, and construction. This fact sheet describes <br /> BMPs you can adopt on your shoreland property to help protect and preserve water quality. In many cases, <br /> the best management for shorelands may be retaining the natural characteristics of your property. <br /> Recognizing Erosion Problems <br /> With more shoreline than California, Florida, and Hawaii combined, Minnesota is bound to have areas <br /> where shoreland erosion is a problem. It is obvious that wave-pounded properties lose soil and ultimately <br /> their value. What is not as obvious is that this erosion process can be accelerated or slowed by the <br /> practices you adopt, and that sediment going into the lake or river is a pollutant. <br /> Erosion is a natural process and, therefore, some sediment does end up in surface water. Clearing <br /> shoreland vegetation and beach rocks, and increasing runoff to the shore will accelerate shoreland erosion. <br /> Bluff Stabilization <br /> Increased runoff is especially detrimental to high bluffs (Figure 1). Slumping of waterfront bluffs results from <br /> unstable soil, usually because surface or ground water is reaching the bluff. On lakes, waves can erode <br /> supporting soil at the bottom of the bluff and cause slumping. Along river bluffs, river currents may erode the <br /> in <br /> support g soil. <br /> Addition d weigh clone to the BLUFF STABILITY <br /> edge of the tl Wf(house, DEPENDS ON <br /> swimming room.; MANY MANY FACTORS <br /> CI- <br /> c° dm�mwardforce <br /> SAND Addition d water from surface <br /> runoff aseptic system decreases <br /> internal strength of duff <br /> CLAY <br /> SAND Removal of material Iran toe of <br /> bluff by wave erosi ai amen <br /> .p < decreases duff support <br /> .'GLACIAL TILL <br /> 'y4 . ,,se <br /> Figure 1: Factors that can make bluffs unstable. <br /> Erosion of higher shoreline bluff areas can be prevented by: <br /> http://www.extension.umn.edu/distribution/naturalresources/components/DD6946g.html 4/4/2012 <br />