1.27k likes | 1.28k Views
BEE–WARE OF THE BEES-ELTON CREEK@FREEDOM 7 BRIDGE. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007. ELTON CREEK, DS OF FREEDOM 7 BRIDGE, FREEDOM, NY. Bank erosion is threatening a farm road
E N D
BEE–WARE OF THE BEES-ELTON CREEK@FREEDOM 7 BRIDGE Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
ELTON CREEK, DS OF FREEDOM 7 BRIDGE, FREEDOM, NY. • Bank erosion is threatening a farm road • NRCS –Environmental Quality Incentives Program {EQIP} cost share with landowner • Rural (farmland) • Bed material: gravel-cobble-sand, incised • Pool-riffle-pool regime, slope around 1% • Average width 20-30 ft, 10-14 ft tall banks • Partially spring fed. • High-quality trout stream, not stocked, natural reproduction of Rainbow, Brown, & upstream, Brook Trout
Looking DS at right eroding bank & exit conditions. PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-Jan 10, 2007
Looking US at attack angle into eroding bank. PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-May 17, 2007
Looking US at eroded bank. Bob is 6 ft 4” (for scale). PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-May 17, 2007
Looking US at eroding bank. Truck on road we are protecting. PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-May 17, 2007
Looking US at eroding bank & large block failure. PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-May 17, 2007
Bank is 14 ft tall-toe is clay, gravel-cobble-sand above PRE-PROJECT-Elton Creek DS of Freedom 7 Bridge-derrick-May 17, 2007
Project Limits THE PLAN – ELTON CREEK DS OF FREEDOM 7 BRIDGE FLOW Project Limits THE FARM ROAD WE ARE PROTECTING Drawing by Robert Shenk, Catt County Soil & Water
THE PLAN – ELTON CREEK DS OF FREEDOM 7 BRIDGE THE PLAN FLOW Drawing by Robert Shenk, Catt County Soil & Water
CONSTRUCTION OCT. 9-12, 2007CONSTRUCTION CONTRACT & STONE COSTS - APPROX. $16,000. TOTAL
METHODS EMPLOYED • 125 ft of self-adjusting & self-filtering Longitudinal Peaked Stone Toe Protection {LPSTP}. Mix of DOT heavy & medium graded stone. All protection is on right bank • 100 ft of stacked stone wall in the impact zone (upstream end of project) • Curved & vegetated keys on US & DS ends, 1 vegged tieback & key in middle of project • A stone check dam at DS end {did not have enuf stone for an Engineered Rocked Riffle} • A curved kicker (Smile) to form a curved pool • Five Single-Stone Bendway Weirs • Several transplanted Streamco Willow shrubs • Live Siltation, Pole Plantings, & Live Staking using Streamco & Black Willows, Red Osier & Silky Dogwoods • Rooted-stock Red Osier Dogwood (6 plants)
Looking US at the constructed bypass channel. We plugged the channel, put all flow in the bypass channel, & worked in the dry during construction. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Silky & red osier cut from an old channel on property All willow cuttings & bushes were also harvested from the property. Under construction-Elton Creek DS of Freedom 7 bridge-derrick-Oct 2007
WE WILL START DOWNSTREAM & WORK UPSTREAM, THEN DO THE GRADE CONTROL @ THE DS END LAST.
LONGITUDINAL PEAKED STONE TOE PROTECTION {LPSTP}{Self-adjusting & self-filtering, Longitudinal Peaked Stone Toe Protection. Consists of a mix of DOT “heavy” & “medium” graded stone}
THE PLAN – ELTON CREEK DS OF FREEDOM 7 BRIDGE THE LONGITUDINAL PEAKED STONE TOE PROTECTION {LPSTP} DS key FLOW Drawing by Robert Shenk, Catt County Soil & Water
Elton Creek near Freedom 7 Bridge, Freedom, NY Farm road Typical bank cross-section Left bank Right bank
Looking DS. Laying out the alignment for the LPSTP Construction-Elton Creek DS of Freedom 7-Steve Perschke-NRCS-Oct 07
Elton Creek near Freedom 7 Bridge, Freedom, NY Then place clay dug from thalweg channel at toe of eroding bank First pre-dig a thalweg channel
Looking DS. Laying out the DS key (red flags). Dug clay placed as substrate fill. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Elton Creek near Freedom 7 Bridge, Freedom, NY Install one-half of the Longitudinal Peaked Stone Toe Protection (LPSTP).
Elton Creek near Freedom 7 Bridge, Freedom, NY Install adventitious rooting Willow Poles
Elton Creek near Freedom 7 Bridge, Freedom, NY Install remainder of LPSTP. Side slopes will be at the angle of repose
Elton Creek near Freedom 7 Bridge, Freedom, NY The stream will adjust to the LPSTP, & the LPSTP will self-adjust to armor the resulting scour hole Toe scour
Elton Creek near Freedom 7 Bridge, Freedom, NY The LPSTP has self-adjusted
Elton Creek near Freedom 7 Bridge, Freedom, NY Install gravel-cobble from stream
Looking DS. Vegetation integrated thru LPSTP. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
LIVE SILTATION{Willow branches about 1-2 inches in diameter, 6 to 8 ft long, 2/3 in ground, 1/3 out, intermixed with Silky & Red Osier Dogwood that is 4 to 6 ft long}
THE PLAN – ELTON CREEK DS OF FREEDOM 7 BRIDGE LPSTP FLOW LIVE SILTATION Drawing by Robert Shenk, Catt County Soil & Water
Looking US. Dug trench landward of LPSTP. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Elton Creek near Freedom 7 Bridge, Freedom, NY Install Live Siltation
Looking US at installed Live Siltation (willow & dogwood). Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Looking US @ Live Siltation, Single Stone Bendway Weirs & veg 8 MONTHS LATER-Elton Cr. DS of Freedom 7 Br.-derrick-JUNE 13, 2008
TRANSPLANTING A LARGE CLUMP OF WILLOW Multi-stem (20 to 40 stems) bushes approx. 14 to 24 ft tall, transplanted as a single clump, with roots in trench directly behind the LPSTP. Tops of branches were trimmed & used as Live Poles (6 to 10 ft long).
THE PLAN – ELTON CREEK DS OF FREEDOM 7 BRIDGE WILLOW BUSH TRANSPLANTATION FLOW LPSTP LIVE SILTATION Drawing by Robert Shenk, Catt County Soil & Water
Elton Creek near Freedom 7 Bridge, Freedom, NY Dig trenches to receive willow bushes
Looking DS at LPSTP, backfilled bank, & dug trench. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Elton Creek near Freedom 7 Bridge, Freedom, NY Transplant large multi-stem Willow Bushes
Looking DS. Transplanting willow bush in trench Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Elton Creek near Freedom 7 Bridge, Freedom, NY Then trim long branches from bush & plant as Willow Poles
Looking DS. Trim willow & plant poles in trench. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Close-up of willow bush & cuttings. Under construction-Elton Creek DS of Freedom 7 bridge-derrick-Oct 2007
Elton Creek near Freedom 7 Bridge, Freedom, NY Water in & backfill
Looking DS. Covering willow bush & poles with soil Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Looking DS. Transplant complete. Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007
Veg planted on a grid, Live Siltation in front & transplants Willow shrub transplants & willow poles Live Siltation Under construction-Elton Creek DS of Freedom 7 Bridge-derrick-Oct 2007