THE STEP-BY STEPS: as posted on the FTP site

Cross-section of Eroded Bank

-sand bed stream – Longitudinal Peaked Stone Toe Protection (LPSTP) – Upper bank sloped and

vegetated

- sand bed stream - LPSTP – Upper bank sloped and vegetated

LOCKED LOG locked under LPSTP (for aquatic habitat)

Longitudinal Peaked Stone Toe Protection (LPSTP) with side slopes at the angle of repose

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Scour hole

The stream will adjust to the LPSTP, & the LPSTP

will self-adjust to armor the resulting scour hole

- sand bed stream - LPSTP – Upper bank sloped and vegetated

The LPSTP has self-adjusted

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Install Live Siltation

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Install gravel-cobble

granular filter

- sand bed stream - LPSTP – Upper bank sloped and vegetated

FILL

CUTSlope bank

(balanced cut/fill)

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Sloped bank

- sand bed stream - LPSTP – Upper bank sloped and vegetated

To install Brush Layering, remove soil

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Install plant material as Brush Layering

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Backfill and install second layer of Brush Layering, etc.

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Install rooted-stock plants

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Soil-choke LPSTP

- sand bed stream - LPSTP – Upper bank sloped and vegetated

Hydroseed all disturbed areas

DONE

QUESTIONS???

ONONDAGA CREEK @ NICHOL ROAD

BRIDGE, LAFAYETTE,

NY

Blue lines denote water’s edge at base flow

Onondaga Creek @ Nichol Road Bridge-Sketch from Mark Schaub

bar

Nic

hol

Roa

d B

rid

ge

Top layer of stone will be removed from red areas. The US section of the left bank will then be sloped & all areas planted.

Removed stone will be then placed in the brown areas using the trenchfill technology to provide a “funnel” effect to prevent the stream from flanking the existing project.

100 Black Willow, 2,000 Streamco Willow, 500 Red Osier Dogwood & 100 Sycamore were planted using the Slit Trench & Brush Layering bioengineering methods. 40 RPM container plants (7 species of trees & shrubs) were planted in the green oval areas. Black Willow & Sycamore Extreme Instant Shade shown by the orange lines.

Note: Plantings form a grid

TWO-STAGE SLIT TRENCH TECHNIQUE

Sketches by Derrick

Dig the trench down into the capillary

(vadose) zone {moist area above the

permanent water table}

Mini-Case study: 1 of 8

Spoil

TWO-STAGE SLIT TRENCH TECHNIQUE

Water table

Mini-Case study: 2 of 8

TWO-STAGE SLIT TRENCH TECHNIQUE

Vadose zone {moist area} is shown in pink

Mini-Case study: 3 of 8Water table

TWO-STAGE SLIT TRENCH TECHNIQUE

Take the last scoop of soil dug from the trench & place

it back into the trench.

Mini-Case study: 4 of 8

TWO-STAGE SLIT TRENCH TECHNIQUE

Place willows & other water-loving species into

loose soil at bottom of trench. They are then less

likely to fall over when trench is backfilled.

Mini-Case study: 5 of 8

TWO-STAGE SLIT TRENCH TECHNIQUE

Partially backfill the trench.

Mini-Case study: 6 of 8

TWO-STAGE SLIT TRENCH TECHNIQUE

Plant other species that require less water than the willow. In this case Sycamore & Red Osier

Dogwood

Mini-Case study: 7 of 8

TWO-STAGE SLIT TRENCH TECHNIQUE

Backfill & water plants in

Mini-Case study: 8 of 8

DONE

ONONDAGA CREEK SITE 5-D

Diamond-Oriented Traffic Control Stones

with Single Stone Bendway Weirs

Square stones (3 ft by 3 ft by 3 ft) placed with a sharp edge facing upstream, designed to “kick” flow off the bank, must be keyed into the bed & bank, spaced 6 to 8 ft apart, every 4th one should be keyed into

the bank. Every 4th stone has a Single Stone Bendway Weir.

Diamond-Oriented Traffic Control Stones with Single

Stone Bendway Weirs

Key

Key

TCS

Key

TCS

SSBW

TCS

TCS

TCS

TCS

TCS

TCS

TCS

SSBW

SSBW

Thalweg is dug and that bedload material is placed between the Traffic Control Stones to form a bench at

the same height as the TCS.

Diamond-Oriented Traffic Control Stones with Single

Stone Bendway Weirs

Plants, root mass, and soil was pulled down from the vertical outer bank to provide streamside vegetation.

The mid & upper bank was sloped and seeded.

Diamond-Oriented Traffic Control Stones with Single

Stone Bendway Weirs

Step 1: Good veg & good root mat, but eroding bank

Step 2: Undercut root mat without disturbing roots

Step 4: Turn bucket & collapse bank. Add minimal stone toe

Utilizing the existing dense root mat

Stabilizing a low bank with good top bank veg

-Large sand bed river – Launchable LPSTP weighted toe with

paved (riprap) midbank area– Upper bank sloped and vegetated

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

“Locked Logs” placed on bed of river and locked under the LPSTP (for improved

aquatic habitat & energy dissipation)

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

“Locked Logs” should be angled downstream approx. 45

degrees so as to shed debris

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

LPSTP (with riverside slope at the angle of repose) in a

“weighted toe” configuration Crestwidth

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

All of the purple stone can self-adjust (launch) and the LPSTP will still be at the original height of protection

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

The stream will adjust to the LPSTP, and the LPSTP will

self-adjust to armor the resulting scour hole

Scour hole

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

The LPSTP has self-adjusted

Scour hole

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Grade the bank to the appropriate angle

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Install gravel-cobble granular

filter

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Install willow poles (to be used as the Bent Willow Pole Method)

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Start to install riprap

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Bent Willow Pole Method (underlying willow bent up,

then next stone placed)

More riprap

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Bent Willow Pole Method

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetatedMore riprap

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Bent Willow Pole Method

POSSIBLE VARIATIONPlant some rooted-stock trees &

shrubs within riprap area (in addition to the Bent Willow Poles)

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Install Brush Layering

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Install rooted-sto

ck plants

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Soil-choke riprap

Large sand bed river – LPSTP weighted toe with paved midbank–

Upper bank sloped & vegetated

Hydroseed all disturbed areas

DONE

QUESTIONS???

A MID PROJECT KEYWAY

DETAIL

Detail for key

Cross-section for keywayFlow

Place granular filter

Detail for key

Flow

Place Willow Poles against US side of

trench

Detail for key

Flow

Place stone in trench

Detail for key

Flow

Choke stone with gravel

(white areas) & water in

Detail for key

Flow

Backfill and overfill with native soils, then compact (some settling

will still occur)

Detail for key

Flow

Seed

DONE

Detail for key

Flow

WIDE KEYWAY

DETAIL

DETAIL FOR KEYWAY THAT WILL ALSO BE

USED FOR EQUIPMENT ACCESS

& AS A HAUL ROAD

In addition to keyway functions, it will be used as equipment access & as

a haul road

16 ft

Detail for key

Excavate wide trench

Place granular filter

Detail for key

Detail for key

Place riprap stone in trench

Detail for key

Choke stone with gravel &

surge stone (white areas)

Detail for keyBackfill & overfill {to allow for

settling} with native soil

Detail for keyPlant & hydro seed

as appropriate

DO

NE

TRENCHFILL REVETMENT

DETAILanother way to do it

Place granular filter

Place willow poles & other adventitious

rooting plants on DS side of trench

Place self-adjusting stone in trench

Choke stone with gravel & cobble (white

areas)

Backfill & overfill {to allow for settling} with native soil

Plant & hydro seed as appropriate

DO

NE

STONE ENGINEERED ROCKED RIFFLE

FOR GRADE CONTROL &

HEADCUT STABILIZATION

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Flow

Flow

Dig key & footer trenches

Key trench

Footer trench

Key trench

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Important note: In some cases the US key trench is dug all the

way across the stream

Key trench

Footer trench

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Flow

Place granular filter (gravel) in all trenches. Note: granular filter not needed in gravel-

cobble bed streams

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Flow

“Dig a hole, plant a pole” says John McCullah

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Pole plantings

Flow

Place key stones and downstream footer stones

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Flow

“Place granular filter on footprint of ERR.

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Place a set of stones (in compression) just upstream of the footer stones

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

A STONE ENGINEERED ROCKED RIFFLE WITH WEIGHTED TOE

FLOW

Stones on crest, the downstream face, & toe all set in compression

Weighted toe can be designed to help stop the headward migration of a DS

knickpoint {headcut}

Place all stones in compression from downstream to upstream

including crest stones.

STONE ENGINEERED ROCKED RIFFLE FOR GRADE CONTROL & HEADCUT STABILIZATION

Place glide

stones

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Flow will keep glide stones in compression

Place appropriate sediment or spawning gravel over glide stones

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Place bank protection riprap stones on both banks

Bank protection riprap

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Pool will form here

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Pool will form here

Adventitious rooting poles planted next to bank protection riprap

DONE

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Pool will form here

Granular filter

FlowProfile view

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

201

All stones in compression from force of water, energy transferred into ground

Force Profile view

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

All stones in compression from force of water, energy transferred into ground

Existing concrete slab Profile view

ENGINEERED ROCKED RIFFLE - MODIFIED FOR VENSAL CREEK APPLICATION

Existing ground

ENGINEERED ROCKED RIFFLES FOR VENSAL CREEK APPLICATION, TULSA, OK. USA

This ERR for stability, DS pool formation, & will

also be sloped specifically for use as a boat launch

This ERR designed to resist future instability and headcutting from the

Arkansas River, and to provide a tailwater for the

US boat launch ERR.

Arkansas River

Engineered Rocked Riffles (ERR) in series used to mitigate the vertical drop over a concrete dam. Could be utilized on the Highland Park Dam on Swan Creek

Constructed pool-riffle-pool configurationD

AM

All top stones in compression

Water surface elevation

Stone dug in

INTEGRATING A FISH LADDER ON THE

DOWNSTREAM FACE OF AN ENGINEERED ROCKED

RIFFLE (ALL STONES IN

COMPRESSION)

AN ENGINEERED ROCKED RIFFLE WITH INTEGRATED FISH LADDER

At least two layers of stones are set in compression to form pools on the DS face of the ERRWater surface elevation

Backwater from DS ERR

AN ENGINEERED ROCKED RIFFLE WITH INTEGRATED FISH LADDER

Mini resting pool for fish passage

AN ENGINEERED ROCKED RIFFLE WITH INTEGRATED FISH LADDER

Compression forces (white arrows) are transferred into the ground

Flow

AN ENGINEERED ROCKED RIFFLE WITH INTEGRATED FISH LADDER

An overall slope of 20 to 1 can still be maintained

201

Entire area excavated, with a granular filter placed on bed

Similar to previous ERR but a large underground weighted stone toe at a 10 to 1 slope would be constructed DS of the present ERR . It would be

constructed first, with all stones in compression

SPECIAL CASE - STONE ERR WITH MAXIMUM HEADCUT STABILIZATION WEIGHTED TOE BUILT IN

Stones placed in compression on granular filter

Amount of weighted toe stone will be designed to halt the upstream movement of

a specific height of headcut

SPECIAL CASE - STONE ERR WITH MAXIMUM HEADCUT STABILIZATION WEIGHTED TOE BUILT IN

Riprap stones placed for bank protection

SPECIAL CASE - STONE ERR WITH MAXIMUM HEADCUT STABILIZATION WEIGHTED TOE BUILT IN

Flow

Profile view

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

201

10

1

Flow

Profile view

STONE ENGINEERED ROCKED RIFFLE FOR GRADE & HEADCUT STABILIZATION

Amount of weighted toe stone will be

designed to halt the upstream movement

of a specific height of headcut

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Upper Bank Undisturbed -

Gravel-Cobble Bed Stream – Install Minimal Height Riprap -

Upper Bank Undisturbed -

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Install Live Siltation

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Pre-dig and overdig pool (let the stream determine

final pool depth)

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Upper Bank Undisturbed -

Pre-dug pool

Part of the dug area will be the toe-down

area for the stone revetment

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

If good gravel-cobble, use dug pool material

as a granular filter

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Install willow poles (to be used as the Bent Willow Pole Method)

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Install riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Install Locked Logs

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Install more riprap to hold down Locked Logs

Locked Log

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Bent Willow Pole Method (underlying willow bent up, then next stone placed)

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Bent Willow Pole Method

More riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Bent Willow Pole Method

More riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Bent Willow Pole Method

Last of the riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Soil-choke riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

Upper Bank Undisturbed -

Hydroseed all disturbed areas

DONE

QUESTIONS???

Gravel-Cobble Bed Stream – Install Minimal Height Riprap –

PLUS Engineered Floodplain Bench – PLUS Upper Bank Sloped & Veged

Cross-section of Eroded Bank

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Floodplain Bench

Cut floodplain bench and slope upper bank (you will have soil left

over). Or build the floodplain bench out into the stream

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Dig Slit Trenches BOTH parallel and perpendicular to flow & install adventitious rooting plants

Floodplain Bench

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Install upper bank rooted-stock plants

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Install Live Siltation against bank

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Pre-dig and overdig pool, let the stream determine

the final pool depth

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Part of the dug area will also be the toe-down area for the stone revetment

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Pre-dug pool

If good gravel-cobble, use dug pool material as a granular filter

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Install toed-down Riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Install Locked Logs for aquatic habitat improvement & energy dissipation

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Lock Locked Logs in place with more Riprap

Locked Log

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Install willows for Bent Willow Pole Method

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Add Riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method (underlying willow bent up,

then next stone placed)

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method

More Riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method

More Riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Bent Willow Pole Method

Last of the Riprap

POSSIBLE VARIATIONIn addition to the Bent Willow Pole Method,

some rooted stock plants could be placed within the interstices of the riprap

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Choke riprap with soil

Gravel-Cobble Bed Stream – Install Minimal Height Riprap – Engineered Floodplain Bench –

Upper Bank Sloped & Vegetated

Hydroseed all disturbed areas

Done – Basically riprap that could stand alone, but enjoys many other functions

QUESTIONS???

QUESTIONS???

CONTRACTION STONES

DESIGNED TO PROVIDE POOL

HABITAT

WELL VEGETATED

WELL VEGETATEDOverwidened riffle-run with no pools Flow

Contraction Stones designed to provide pool habitat

Toe down large stones (partially key into bank) opposite each other to constrict channel. Crests of

stones should not be higher than adjacent bank areas

10-15 ft 10-15 ft

Reduce width according to model results

8-10 ft

Contraction Stones designed to provide pool habitat

Pre-dig and over-dig pool areas.

Contraction Stones designed to provide pool habitat

Stream will set pool depths and widths over time

DONEContraction Stones designed to provide pool habitat

QUESTIONS???

Transverse Bar with Stone Angle

Slam

Predig & overdig pool

Transverse Bar with Stone Angle Slam

Place stones, backfill with soil (choke), and vegetate.

Angle Slam stones

Transverse Bar with Stone Angle Slam

Transplant overhanging shrub-small tree vegetation.

DONETransverse Bar with Stone Angle Slam

QUESTIONS???

Transverse Bar with Wood Board

LUNKER

Pre-dig and overdig pool & LUNKER areas

Pre-dig & overdig pool & area where

LUNKERS will be placed

Transverse Bar with Wood Board LUNKERS

Place and anchor LUNKERS.

LUNKER

LUNKERLUNKER

Transverse Bar with Wood Board LUNKERS

Transplant large shrubs/small trees.

DONE

LUNKER

LUNKERLUNKER

Transverse Bar with Wood Board LUNKERS

QUESTIONS???

Transverse Bar with Log LUNKER

Dig & place footer logs, downstream log keys behind US log .

Footer log Footer log

Key section of log

Transverse Bar with Log LUNKER

Place and anchor roof logs .

Roof logRoof log

Roof log

Transverse Bar with Log LUNKER

Transplant shrub/tree vegetation .

Transverse Bar with Log LUNKER DONE

QUESTIONS???

VORTEX WEIR FOR

POOL CREATION

Vortex Weir for Pool Creation

Vortex weir is a semi-circle flow concentrator, lower in the center of the Weir, plunge pool immediately downstream. Key stones

will be choked with soil and vegetated.

Lower elevation

Key

Key

Key

Key

Key

Vortex Weir for Pool Creation

Predig & overdig pool

Predig & overdig pool

Vortex Weir for Pool Creation

Plant vegetation, can be combos of, Live Siltation, Live Stakes, Slit Trench, rooted stock or mechanically transplanted vegetation.

Plant vegetation

Plant vegetation

Vortex Weir for Pool Creation

Plant mechanically transplanted large shrub vegetation.

Transplant large

vegetation

DONE

QUESTIONS???

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION

(LPSTP) WITH A VEGETATED

FLOODPLAIN BENCHTALLER BANK EXAMPLE

ENHANCED LONGITUDINAL PEAKED STONE TOE

PROTECTION (LPSTP) WITH SINGLE STONE BENDWAY

WEIRS, LOCKED LOGS, SOIL CHOKING, LIVE SILTATION, POLE PLANTINGS, ROOTED –

STOCK PLANTS, & A FLOODPLAIN BENCH

Stream channel

Top bank

Eroding bank

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

“Locked Logs” placed on bed of river for improved aquatic habitat & energy dissipation. Locked Logs should be angled downstream 25 to 70 degrees so as to shed debris.

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Locked Logs are then “locked” under the Longitudinal Peaked Stone Toe Protection (LPSTP).

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

willow, dogwood, etc. poles placed on stone

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Add more stone

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Tree or shrub poles (called Live Siltation) installed on

top of LPSTP

Sycamore, willow, dogwood, river birch poles can then be laid on the stone and up against the bank. Basal ends should be in vadose zone

(capillary zone)

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Backfill to form floodplain bench at the Q-2 flood elevation

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

At intervals, install Living Dikes (densely deep-planted adventitious poles

perpendicular to direction of high flow)

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Typically on floodplain appropriate rooted-stock plants would be installed

ENHANCED LONGITUDINAL PEAKED STONE TOE PROTECTION (LPSTP)

Hydroseed, or seed & mulch

Floodplain bench

planted on a grid

patternF

low

AERIAL VIEW OF

ENHANCED LPSTP WITH

SINGLE STONE OR

SHORT BENDWAY

WEIRS, & A FLOODPLAIN

BENCH

Living Dikes-plants

perpendicular to flow

Live Siltation

Single-Stone Bendway Weir

Floodplain bench

planted on a grid

pattern

Flo

w

AERIAL VIEW OF

ENHANCED LPSTP WITH

BENDWAY WEIRS, & A

FLOODPLAIN BENCH

Living Dikes-plants

perpendicular to flow

Live Siltation

QUESTIONS???

QUESTIONS???

QUESTIONS ???ANSWERS ???