STONES DRILLED & PINNED TO BEDROCK WITH METAL RODS (Two case studies) by Dave Derrick

THE EIGHTEENMILE CREEK PROJECT PHASE I CONSTRUCTED AUG-SEPT 2003 by Dave Derrick

At higher flows energy is vectoring straight into 14 ft tall eroding bank Pix by Mark Seider

Close-up of large stones, these were hand selected & are 3 ft by 3 ft with two sides flat. My sneaker

Tough to specify stone. Call some quarries to see what is available. Stone might be called “ledge rock, shelf rock, flats, or big flats”. Thickness will be determined by how it is fractured & breaks out during blasting. Must be fairly flat on two sides. Inspect stone, then spec. minimum measurements, say 2 ft x 3 ft by 4 ft (can be exceeded, but cannot be smaller). When ready for construction go to the quarry & hand pick the stone.

Schematic detail of Great Wall with backfill & plantings (does not include LUNKERS or keys) Toe stones are placed, drilled through stone & 1 ft deep into underlying bedrock, metal rod is driven into the hole, excess cut

Looking DS at the Great Wall, it is approx. 300 ft long, notice upper bank is not smoothed, seeded, or planted yet Pix by Derrick Stepped back design allows fishing folk to use different levels

Looking DS, placing the first row of stones on bedrock

Detail of Great Wall of Newfane & Turbidity Curtain from project Plans & Specifications Only the bottom row of stone is drilled & pegged to bedrock Shot rock used for foundation

Hand drilling completely through the stone & one ft deep into bedrock. Stones now pinned with a 4 ft long, one inch diameter rebar (not cut off yet)

Drilling completely through the stone & one ft deep into bedrock. Stones now pinned with a 4 ft long, one inch diameter rebar (not cut off yet)

Bottom row of stones drilled and pinned with 1 inch diameter rebar

Drilling completely through the stone & one ft deep into bedrock. Stones will be pinned with a 4 ft long, one inch diameter rebar. Shot rock foundation in foreground. Flow from dam aimed right at wall!! 8” Surge stone base for large walk-able bank protection

Erosion Control Blankets supplied by Indian Valley Industries, Inc. Coir 700 mat (700 grams per square meter). 100% spun coir, with an open area of 50%. 100% biodegradable.

Pix by Derrick Looking US. 5 growing seasons later. Riparian plantings are robust, June 7, Scale, daughter Dana is 5 ft 2”

Since construction this project has been used extensively for public outreach (adult and children) & as a teaching platform for fellow professionals.

I got to fly in the DEC/State Police helicopter. Looking downstream, red line is the Great Wall of Newfane - Feb 2, 2005

Peaceful co-existence “combat” fishing

BIG THAW PLUS RAIN = HIGH STAGES Feb 6, 2008

Looking the Great Wall. Power generating dam in background. Post-Project-18 Mile Creek, Phase II-Feb 6, 2008, Pix-Vic

PROJECT CONSTRUCTED June 2006 CHAUTAUQUA CREEK ICE DAMAGE REDUCTION PROJECT –Near its 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 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), spaced 50 ft apart Key Trench Stone (drilled & pegged) Stacked Stone Wall (bottom row drilled & pegged) Sloped Stone using “Big Flats”, most 5 ft by 5 ft by 2 ft thick Flow

DRILLING & PEGGING TOE STONES & SINGLE STONE BENDWAY WEIRS WITH METAL RODS INTO BEDROCK

Construction June Looking 2 hoes jack hammering a footer trench through a layer of weathered stone. Would not need to do this if stone was not weathered. Pix by derrick

7 ft long, 1 5/8 inch diameter solid rods for pegging stone to bedrock. Pix by Joe Galati

Dave Spann of Chautauqua County Soil & Water Conservation District with a 7 ft long, 1 5/8 inch diameter solid bar. Dave did everything from writing the grant to providing extraordinary project management. On time & under budget!!!!

Construction June Looking DS. Drilling 2 inch holes to peg stone to bedrock. The 2 inch bit was the only one they had on hand… Pix by Joe Galati This type of drill needs a flat solid foundation.

Construction June A good hole in a footer stone in the jackhammered trench. Pix by Joe Galati

Construction June Looking US. Metal pinning rods not cut off yet. Pix by derrick

Construction July Cut off solid metal rod in drilled hole pinning stone to underlying bedrock Pix by Joe Galati

Construction June Looking US during placement of “big flat” stones on the backfill/filter stone. Pix by derrick

EVERYBODY WANTS COSTS, FOR ONCE WE HAVE COSTS!! Big thanks to Dave Spann, Chautauqua County Soil & Water Conservation District for these figures.

RockSteel Rod PlantsSoilSeeds $43,026.$5,655.$4,936.$3,458.$400. Heavy Equipment & Operators Hydraulic Hammer Rock Drilling (Merk Drilling, Buffalo) Land- scaping $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

CONSTRUCTION COMPLETE

May 17, Looking top bank willow poles & other plantings Pix by Joe Galati

Looking upstream at the SINGLE-STONE BENDWAY WEIRS

Aug 31, 2006, looking US at two pegged to bedrock Single-Stone Bendway Weirs in the stacked stone wall section. Only bottom stones in wall are pinned Pix by derrick

Aug 29, 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, slow smooth water surface near bank.

Mar 14, Looking DS. Close-up of two submerged Single-Stone Bendway Weirs. Note dead water between weirs Pix by Joe Galati

16 MONTHS AFTER CONSTRUCTION NOV 2007

Nov 8, Looking DS. Good thalweg alignment off the ends of the Single-Stone Bendway Weirs Pix by Joe Galati

This PowerPoint presentation was developed & built by Dave Derrick. Any questions or comments, call my personal , or Enjoy the

Cleophus napping in the sun