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<br />Stream bank vegetation is one of the most effective methods of controlling <br />stream bank erosion under natural conditions. It is also the least costly <br />method available when maintained in good condition. ijhen streams begin to <br />meander, bank erosion can occur if the vegetative protection is not in proper <br />condition. <br /> <br />1 <br />1 <br />1 <br />, <br />, <br />< <br />, <br /> <br />Willo~/Alder/DogwooQ Sprigs kevetment <br /> <br />When this occurs, sprigs of adaoted woody species such as willows, alders, and <br />dogwood can be used in the wetter zone of the stream bank. This method works <br />best on the straight stream sections where water pressure is not attempting to <br />scour the banks. 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 />least 60 days. If water levels decrease too fast for the cutting!1 to root and <br />follow the declining water table, they will die, The stream banks above the <br />sprigged cuttings should be seeded to grass and banks may require shaplng to <br />at least 1.5 to 1 slope. <br /> <br />1 <br />1 <br />, <br />~ <br />I <br />, <br />~ <br /> <br />Naintenance for this practice will require replacement of dead sprigs and <br />reshaping and seeding banks which develop scour holes. <br /> <br />1 <br />~ <br />~ <br />1 <br />~ <br />1 <br />1 <br />, <br />~ <br />~ <br />1 <br />~ <br /> <br />, <br /> <br />1 <br />, <br /> <br />j <br /> <br />, <br />. <br /> <br />52 <br />