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