Laserfiche WebLink
<br />W11lo\l Clump Revetment <br /> <br />When meande~ erosion is occurring, clumps of live willows can be relocated <br />from local areas which have eXcess willows to "rotect either straight or <br />~eander type erosion. <br /> <br />The clumps can be dug and transported using a fron~ end loader or backhoe <br />tractor and placed directly into the stream bottom against the bank. ~illo~s <br />should normally be placed l~ locations where they l~eeeive perennial ~aterl <br />mo is ture. <br /> <br />The clumps should be placed so stream flow can no I: get behind or betlleen <br />clumps, On meanders, clump protection such as steol posts with woven wire <br />fence should be In.talled to ensure the clumps sta.,' in place untll well rooted <br />(one year'. protection is adequate), This protection may also be nece.sary on <br />straight channal "",ctions If .tre.m flows are high enough to endanger .ashin. <br />out of fre.hly placed clumps. The woven wire .hould be installed high enough <br />up bank on the end" to enSure the clumps and fencll are not washed out the <br />first season, The banks can then be sloped to 1.5 to 1 or greater slope 3nd <br />seeded with an adapted grass or local clumps of sod to speed up the total bank <br />rehabilitation. This may not be necessary as the ,:lump protected banks Ilill <br />slough and revegetate n.tu~ally, but will help in '.eed control. <br /> <br />~aintenanca requirements fo~ this p~actice includ.. replacing sections that <br />wash out and reseeding those sections thet do not establish adequate grass <br />stands. <br /> <br />56 <br />