FLOOD06399

• County: Jefferson
• Community: Buffalo Creek
• Basin: South Platte
• Title: Stream Channel Stabilization Techniques for the Buffalo Creek Reclamation Project
• Date: 8/20/1996
• Prepared For: USFWS
• Prepared By: Woodward-Clyde
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

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EROSION !)ll!O

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Cut ~gituclinal cballDel anchor slotS 4"
deep ;/nd 4" wide along eac:h side of the
,
installation to bury edges of matting,
whenever possible extend malling 2" - 3"
aboveithe crest of channel side slopes.

Begmbg at the downstream end and in the
cente~ of the chaDl1el, place the initial end
of the !fust roll in the anchor trench and
secure with fastellillg devices all'
intcrv3ls. Note: matting will initially be
upside dowtl in aDchor trench.

In I . . d- lis .
same m1ll1ller, position a ~acent TO m
ancho~ trench, overlapping the preceding
roll a ininimum of 3 p.
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secuJ these initial ends of malS with
,
anchors at I' inteTllals, backfill and
COll1pB.ct soil.
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,
. Unroll center strip of m1llling I1JlSlleam.
Stop at next check slot or terminal anchor
trenell.
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. Unro~ adjacenl mats upstream in similar
fashion. maintaining 3" O1/erl8P.
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Fold and secure all rolls of matting
,
SIlugly inlO all \laIISVerse check
slots. Lly mat in the bottom of the
s101 then fold bllck Ilgainst itself.
Anchor through both layers of mllt
all' intervals then backfill aDd
compact soil. Continue rolling all
mat ..tidths upstream to the next
check'slol Or terminal anchor
trench.
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6keniate method for nonaitica1
in"" n~tions: place two rows of anchors on
6" centers at 25' - 30' inleTllals in lieu of
excav3Ied check slolS.
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Shingle-lap spliced ends by a minimum of l'
-..jib uPstream mar on top to preveilt

l'l'lifring by water or begin new rolls in a
check slot Anchor overlapped area by
placing two rows of anchors, l' apart on I'
interVals. '

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Place edges of outside mats in previously
excavued longitudinal slots, anchor using
presaibed staple panern, backfill. and
compacl soil.

. Anchor, fill and compact upstream end of .
mal in a 12" x 6" termiaaI trench.

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Secure mar to grollIld Sl.Itface using U-
shaped wire sl8ples geotextile pins or
woodeD stakes.

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Seed and fill D1rf reinforcement matting with
sail, if specified.

SoillillillJ if specified for D1rf reinforcemenL

. After seeding, spread and lightly rake 112" -
3/4" offine topsoil into the mal apeJtUIes to
completely fill mat thiclaiess. Use backside
of rake or odler flat implement.

. Spread topsoil using lightweight loader,
backhoe, or other power equipUlellt. Avoid
sharp tnms with equipment.

. Do not drive traeked or heavy eCjlJipmp.[J!
O1/er mat.

. Avoid any 1raflic over matting if loose or
wet soil conditiODS exisL

. Use shovels, nkes or brooms for fine
grading and touch up.

. Smooth out soil filling just exposiDg top
nelling of matrix.