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ICE DAMAGE REDUCTION
PROJECT- CHAUTAUQUA
CREEK @ MOUTH
(LAKE ERIE) WESTFIELD,
NYPix by Dave Spann
CHAUTAUQUA CREEK ICE DAMAGE REDUCTION
PROJECT –Near its mouth @ Lake Erie
Severe scour from ice and high flow velocities on the right descending bank had resulted in an overwidened section of stream.
Mid-channel sediment bars, mouth of creek @ Lake Erie clogged
No holding areas or habitat for steelhead A heavily used public fishing section of
the stream
NEED PLANS & SPECS
Single Stone Bendway Weirs (pegged to bedrock)
Key
Key
Key
Key
Key
Key
Key
Trench Stone & Stacked Stone Wall
Sloped Stone using “Big Flats”
Flow
Construction June 2006.
Looking uphill @ a key in the sloped bank
area
Pix by derrick
DRILLING & PEGGING TOE
STONES & SINGLE STONE BENDWAY
WEIRS WITH METAL RODS TO
BEDROCK
Construction June 2006. Looking DS @ 2 hoes jack
hammering a footer trench through solid stone
Pix by derrick
Construction June 2006.
Looking DS @ DS curved key
Pix by derrick
7 ft long, 1 5/8 inch
diameter rebar
rods for pegging stone to bedrock.
Pix by Joe Galati
Pix by Joe Galati
Dave Spann of Chautauqua County
Soil & Water Conservation District with a 7 ft long, 1 5/8 inch diameter rebar. Dave did everything
from writing the grant to providing
extraordinary project management. On time and under budget!!!!
Construction June 2006. Looking DS. Drilling 2.5 inch holes
to peg stone to bedrock. The 2.5 inch bit was the
only one they had on
hand…
Pix by Joe Galati
Construction June 2006. Drilling holes
for metal pinning rods
Pix by Joe Galati
Construction June 2006. Drilling
solid stone
Pix by Joe Galati
Construction June 2006. A good hole in a footer
stone.
Pix by Joe Galati
Construction June 2006. Looking US.
Metal pinning rods not cut off
yet. Pix by derrick
Construction July 2006. Metal pin in drilled hole
pinning stone to underlying
bedrock
Pix by Joe Galati
Construction June 2006. Looking US
during placement of “big flat” stones on
the backfill/filter stone.
Pix by derrick
Construction June 2006. Dave Spann
hydro-seeding
Pix by Joe Galati
July 2006. Looking US. One month after plant installation.
Pix by Joe Galati
May 17, 2007. Looking DS @ top
bank willow poles & other plantings
Pix by Joe Galati
THE STACKED STONE WALL
BANK PROTECTION
AREA (the upstream section of the
project)
Construction June 2006. Looking US at the footer
stones of the stacked stone wall.
Pix by derrick
Construction June 2006. Looking DS @
the stacked stone wall.
Pix by Joe Galati
Construction June 2006. From the US
key looking DS. Robust key goes
deep into the woods.
Pix by Dave Spann
CONSTRUCTION
COMPLETE
Rock Steel Rod
Plants Soil Seeds
$43,026. $5,655. $4,936. $3,458. $400.
Heavy Equipment
& Operators
Hydraulic Hammer
Rock Drilling
Landscaping
$120,154. $11,450. $7,700. $3,805.
Total: $200,584.
CONSTRUCTION COSTS Does not include admin, design, permitting, program
management, construction oversight, or plant installation
Looking upstream at the
SINGLE-STONE BENDWAY
WEIRS
Looking US during low flow @ Single Stone Bendway Weirs (SSBW) at the sloped bank section of the project. Weirs spaced 50 ft apart.
3 YEARS AFTER CONSTRUCTION-CHAUTAUQUA CR.-DERRICK 6-18-09
SSBW
SSBWSSBW
Aug 29, 2006 -high water- Looking US, note dead water near toe & thalweg location near arrow, all
due to the Single Stone Bendway Weirs
Photo by Dave Spann
Looking downstream
at the SINGLE-STONE
BENDWAY WEIRS HIGH WATER AUG 29, 2006
Aug 29, 2006-high water-looking DS
Photo by Dave Spann
Note rooster tail defining right edge of
high velocity water
Aug 29, 2006-high water-Looking DS toward Lake
Erie
Photo by Dave Spann
A high water flow
event. Mar 14,
2007
Mar 14, 2006. Looking DS. Three submerged Bendway Weirs can be located due to surface
disturbance
Pix by Joe Galati
Mar 14, 2006. Looking DS. Close-up of two submerged
Bendway Weirs
Pix by Joe Galati
Project effects downstream at the mouth into
Lake Erie Feb 7, 2007
Looking DS on Feb 7, 2007 at ice mountains blocking mouth of Chautauqua Creek @
Lake Erie {approx. 700 ft DS of DS end of project}.
Pix from Joe Galati-NYSDEC
Looking DS at ice mountains blown out by concentrated flow from our project. This is approx. 700 ft DS of DS end of project. Mar
14, 2007
Pix from Joe Galati-NYSDEC
16 MONTHS AFTER
CONSTRUCTION
NOV 2007
Nov 8, 2007.
Looking DS. Thalweg
off the ends of the
Bendway Weirs
Pix by Joe Galati
THE FASTEST ICE OUT DAVE SPANN HAS
EVER SEEN (and he has lived
nearby all his life)
JANUARY 2008
Jan 2008-Ice in place. Looking DS toward Lake
Erie
Photo by Dave Spann
Dave Spann reports:
Had some ice flush over the weekend. Nasty little storm 60 plus mph winds and 9 foot waves smashing the ice formations.
The photos are taken in less than a 15 hour time period. The ice impacted and flushed sometime overnight. I have never seen it leave in less that 48 hrs ever before under these conditions. Nice! You can see from the photos that the creek was able to pass the ice even with the lake entering the mouth of the creek, and raising the water elevation 3 plus feet, in addition to the energy of the surf pushing upstream.
Pretty good test!, Dave Spann
Photo by Dave Spann
Looking DS toward Lake Erie. Jan 2008-Ice has flushed out.
More thoughts from Dave Spann :::
Historically, the ice did build on the banks prior to the project. It was forced up onto the flatter portions of the banks where it was heaved up by constant ice loading. Moreover, it was much less organized and irregular hindering ice movement.
I believe the project has greatly decreased the duration of the ice jamming, and therefore reduces overall ice loading. There is no doubt that the Bendways have greatly improved the efficiency of the ice movement.
Photo by Dave Spann
Jan 2008-Ice has moved out. Looking DS. Nice thick ice sitting directly over
the Bendway Weirs, note smooth streamside edge of ice.
3 YEARS AFTER PROJECT
COMPLETIONPhotos by Derrick JUNE 17, 2009
Catskill sand cherry growing well in sun, but died when planted in shade.
3 YEARS AFTER CONSTRUCTION-CHAUTAUQUA CR.-DERRICK 6-18-09
Looking DS @ the project, all working well. All top bank willow was chewed down by beaver but regenerated as multi-stem shrubs.
3 YEARS AFTER CONSTRUCTION-CHAUTAUQUA CR.-DERRICK 6-18-09
Looking US @ deposition US of the big Single Stone Bendway Weir. The entire project is stable. For the 3 year life of the
project the ice management aspects has performed as planned.
3 YEARS AFTER CONSTRUCTION-CHAUTAUQUA CR.-DERRICK 6-18-09
Cleophus napping in the sun