Soil-choked  Riprap  covered  with  Erosion  Control  Blanket  (ECB),  &  planted  with  native  tre...
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CONSTRUCTION DELAWARE RIVER-SITE 6-PIX BY DERRICK 9-12-2009 PowerPoint PPT Presentation


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Soil-choked Riprap covered with Erosion Control Blanket (ECB), & planted with native trees & shrubs through the ECB.

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CONSTRUCTION DELAWARE RIVER-SITE 6-PIX BY DERRICK 9-12-2009

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Construction delaware river site 6 pix by derrick 9 12 2009

Soil-choked Riprap covered with Erosion Control Blanket (ECB), & planted with native trees & shrubs through the ECB


Construction delaware river site 6 pix by derrick 9 12 2009

Riprap to top bank was soil-choked, seeded, covered with a 100% coir 700 grams/ sq. meter series Erosion Control Blanket (ECB), & five species of container native trees & shrubs planted through the ECB. Toe protection was LPSTP and Single Stone Bendway Weirs.


Construction delaware river site 6 pix by derrick 9 12 2009

Cutting coir blanket to length plus close-up. This is a 700 series (700 grams per sq. meter blanket. Heavy& tough. Traps soil & seed well, sticks in dirt when wet, open weave, can be reseeded if needed

CONSTRUCTION DELAWARE RIVER-SITE 6-PIX BY DERRICK 9-12-2009


Construction delaware river site 6 pix by derrick 9 12 2009

SITE 2-B: BANK STABILIZATION TO PROTECT A COUNTY OWNED HIGHWAY, BUSHKILL, PA.DELAWARE WATER GAP NATIONAL RECREATION AREA NATIONAL PARK SERVICE PROJECT CONSTRUCTED SEPTEMBER 19-22, 2009


Problems

PROBLEMS

  • A severe attack angle caused by planform geometry & a transverse bar that directs the flow of Bushkill Creek into the left descending bank just downstream of Site 2-A had eroded the left descending bank dangerously close to a county-maintained two lane highway. The project is 255 ft long. In places the stream was within 15 ft of the road. The bank was steep in this area with the high velocity thalweg immediately at the toe. In some areas a single row of mature trees attempted to hold the bank together, in other areas trees were absence or dead.


Construction delaware river site 6 pix by derrick 9 12 2009

Aerial view of project area with work limits delineated.

Courtesy of Ecological Restoration, Inc


Construction delaware river site 6 pix by derrick 9 12 2009

PRE-PROJECT PHOTOS by Dave Derrick Dec. 16, 2008(HIGH WATER) & Sept 9, 2009


High water looking ds @ flow attack into site 2 b

HIGH WATER-Looking DS @ flow attack into Site 2-B.

PRE-PROJECT BUSHKILL CR-SITE 2-B PIX BY DERRICK 12-16-2008


Looking ds @ left bank entire length of project

Looking DS @ left bank (entire length of project)

PRE-PROJECT BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-9-2009


Looking ds @ left bank flow into upper end of project

Looking DS @ left bank. Flow into upper end of project

PRE-PROJECT BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-9-2009


The plan

THE PLAN


Solutions the plan

SOLUTIONS (THE PLAN)

  • The upstream section has 210 ft of Longitudinal Peaked Stone Toe Protection (LPSTP), applied at a rate of 2 tons/ft as a resistive toe protection. Vines were planted to cover the LPSTP stone. Keyed into the LPSTP are 9 Single or Double Stone Bendway Weirs, spaced approx. 30 ft apart. The downstream 45 ft of the project has two Bendway Weirs & 7 Traffic Control Stones. Four keys anchor the entire project, with two keys designed as stairs for fisherman access. Above the entire length of LPSTP is a row of willow & dogwood poles (brush layer). The upstream 85 ft has riprap applied up to top bank, then soil-choked & encapsulated with a 100% coir, 700 grams/sq. meter Erosion Control Blanket (ECB). Five species of trees and shrubs were planted through the ECB. The downstream 125 ft of LPSTP has the single brush layer & about 2 ft of ECB encapsulated earth, with the mid & upper bank sloped & planted with dozens of rooted-stock trees & shrubs.


Construction delaware river site 6 pix by derrick 9 12 2009

Soil-choked & planted riprap to top bank in pink area-85 ft wide

Courtesy of Ecological Restoration, Inc.


Construction delaware river site 6 pix by derrick 9 12 2009

This is typical protection US & DS of the Soil-choked Riprap protection

Courtesy of Ecological Restoration, Inc.


Plants planted

PLANTS PLANTED

Common Name # Size

  • Cottonwood 30 in tree bands (small pots)

  • Sycamore 10 2 gallon fiber pots

  • Silver Maple 10 2 gallon pots

  • Red Oak 10 3 gallon pots

  • Silky Dogwood 500 bare root

  • Black Willow 250 bare root

  • Ninebark 233 bare root

  • Virginia Creeper 52 cuttings

  • Rhododendron 25 3 gallon pots


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION PHOTOS by Dave Derrick, September 22, 2009


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US @ large stone for Single & Double Stone Bendway Weirs. No room for construction!

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US @ completed LPSTP toe protection near DS end. Valuable trees untouched. Single Stone Bendway Weir

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US @ thalweg controlled by Bendway Weirs, note dead water near bank.

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Construction delaware river site 6 pix by derrick 9 12 2009

The local county road supervisor was worried that the section of bank that was impacted the most by flow would erode (upper section of project), so in response to his concerns, a blanket of riprap 85 ft wide was applied up to top bank (riprap applied above the LPSTP). Riprap was soil-choked, covered with a 100% coir 700 grams/ sq. meter series Erosion Control Blanket (ECB), & five species of container native trees & shrubs planted through the ECB


Bushkill creek delaware water gap pa

Bushkill Creek, Delaware Water Gap, PA

Slope bank. A balanced cut/fill in all sections. Backfill anchors the ECB at toe.

CUT

Erosion Control Blanket

FILL

Live Siltation

Bendway Weir

LPSTP


Bushkill creek delaware water gap pa1

Bushkill Creek, Delaware Water Gap, PA

85 ft wide blanket of riprap applied from LPSTP & Live Siltation up to top of bank.


Bushkill creek delaware water gap pa2

Bushkill Creek, Delaware Water Gap, PA

Soil-choke riprap to top of bank.


Bushkill creek delaware water gap pa3

Bushkill Creek, Delaware Water Gap, PA

Seed all soil-choke soil.


Construction delaware river site 6 pix by derrick 9 12 2009

Riprap to top bank, then soil-choked. Leah is spreading grass seed. The local road super was worried about the impact zone eroding, so riprap to top bank.

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Bushkill creek delaware water gap pa4

Bushkill Creek, Delaware Water Gap, PA

Install Erosion Control Blanket, dig key at top bank to anchor ECB


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US. Upper end of ECB tucked into key trench.

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US. Backfilling the uphill ECB anchor trench

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Construction delaware river site 6 pix by derrick 9 12 2009

Looking US. Backfilling the uphill ECB anchor trench

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-22-2009


Bushkill creek delaware water gap pa5

Bushkill Creek, Delaware Water Gap, PA

Install rooted stock plants through ECB as appropriate


Project complete

PROJECT COMPLETE


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETEPhotos by Derrick SEPT. 25, 2009


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETE-Looking downhill @ the soil-choked riprap with Erosion Control Blanket cover & rooted plants

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETE-Looking at the ECB uphill key. ECB was trenched in, then backfilled with soil & stone.

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETE-Looking DS @ flow into Site 2-B. Upstream key & US end of project. Riprap area is covered by the tan Erosion Control Blanket.

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETE-LPSTP with Live Siltation, Single-Stone Bendway Weirs, ECB with riprap to top bank with soil-choke & tree & shrub rooted-stock plantings

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


Construction delaware river site 6 pix by derrick 9 12 2009

CONSTRUCTION COMPLETE-LPSTP with Live Siltation, Single-Stone Bendway Weirs, ECB with riprap to top bank with soil-choke & tree & shrub rooted-stock plantings. Note dead water near bank due to Bendway Weirs

Soil-Choked Riprap

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


Construction complete looking @ the ds half of the project

CONSTRUCTION COMPLETE-Looking @ the DS half of the project

Soil-Choked Riprap

CONSTRUCTION BUSHKILL CR-SITE 2-B PIX BY DERRICK 9-25-2009


1 year after project completion photos by dave derrick sept 12 2010

1 YEAR AFTER PROJECT COMPLETION Photos by Dave DerrickSEPT. 12, 2010


1 year later looking ds @ mid project area lpstp bendway weirs soil choked riprap many plantings

1 YEAR LATER-Looking DS @ mid-project area. LPSTP, Bendway Weirs, Soil-Choked Riprap & many plantings

Soil-Choked Riprap

1 YEAR LATER-BUSHKILL CR-SITE 2-B - DERRICK 9-12-2010


Construction delaware river site 6 pix by derrick 9 12 2009

1 YEAR LATER-Looking US @ the transverse bar directing flow into the formerly eroding bank. Riprap with soil choke encapsulated with ECB with plantings.

1 YEAR LATER-BUSHKILL CR-SITE 2-B - DERRICK 9-12-2010


Construction delaware river site 6 pix by derrick 9 12 2009

1 YEAR LATER-Looking @ section covered by full bank riprap, then soiled, seeded, & covered by Erosion Control Blanket (ECB)

1 YEAR LATER-BUSHKILL CR-SITE 2-B - DERRICK 9-12-2010


Construction delaware river site 6 pix by derrick 9 12 2009

14 MONTHS AFTER PROJECT COMPLETIONHIGH WATERPhotos by Derrick Nov. 4, 2010


Construction delaware river site 6 pix by derrick 9 12 2009

FROM UPSTREAM TO DOWNSTREAM


Construction delaware river site 6 pix by derrick 9 12 2009

HIGH WATER-Looking @ the US end of Site 2-B. Soil-choked riprap. Water is redirected by the transverse bar toward the project (US arrows), but then redirected again by the Bendway Weirs (SSBW), DS arrow.

14 MONTHS LATER-BUSHKILL CR-SITE 2-B - DERRICK 11-4-2010


Construction delaware river site 6 pix by derrick 9 12 2009

HIGH WATER-All of the bank in this picture is rip rapped to top bank, soil-choked, seeded, & covered with a 700 series, 100% coir, 100% degradable, Erosion Control Blanket then container plants were installed.

14 MONTHS LATER-BUSHKILL CR-SITE 2-B - DERRICK 11-4-2010


High water close up looking @ soil choked riprap with erosion control blanket plantings

HIGH WATER-Close-up looking @ soil-choked riprap with Erosion Control Blanket & plantings.

14 MONTHS LATER-BUSHKILL CR-SITE 2-B - DERRICK 11-4-2010


High water close up looking @ soil choked riprap with erosion control blanket plantings1

HIGH WATER-Close-up looking @ soil-choked riprap with Erosion Control Blanket & plantings.

14 MONTHS LATER-BUSHKILL CR-SITE 2-B - DERRICK 11-4-2010


Construction delaware river site 6 pix by derrick 9 12 2009

PEYTON & CLEOPHUS READY TO DO SOME COLD WEATHER MOWING


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