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<br />~illow/Alder/Dogwooa Sprigs Revetment <br /> <br />Stream bank vegetation is one of the most effective methods of controlli~1 <br />stream bank erosion under natgral conditions. re is also the least costly <br />method available when maintained in good condition. ~hen streams begin to <br />meander, bank ero~ion can Occgr if the vegetative protection is not in ?ro~e. <br />condition. <br /> <br />~hen t~is occu.s, sprigs of ad~;~~ woody species such as willows, alde.s, a~d <br />dogwood can be used in the we,.er zone of the'stream bank, This method wor~s <br />best on the straight stream sections where water pressure is not atte~ptl~g t~ <br />scour the bank.. A critical requirement of this method is to sprig the cut- <br />tings deep enough or close enough to ground water to ensure moisture for at <br />lea.t 60 days, If water level' decrease too fast for the cuttings to root In1 <br />follow the declining water table, they will die. The stream banks above ",e <br />.prigged cuttings ~hould be .eeded to gra.. and bank. may require sharing "~ <br />at least l.5 to 1 ~lope. <br /> <br />~aincenance for this practice will require replacement of dead sprigs and <br />reshaping and seeding bank. which develop .cour holes. <br /> <br />42 <br />