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FISH PASSAGE TOUR

Townsville

22 October 2009

Information Booklet

Contents:

• Itinerary

• Solander Road & Discovery Drive Fishways, JCU

• Types of fish barriers

• Stuart Creek Culvert Removal

• Introduction to Fish Passage (First half of presentation by Tim Marsden-

http://www.nqdrytropics.org.au/projects/downloads/T_Marsden_fishways.pdf)

• University Creek fishways – Mitigation of migration barriers (Ross Kapitzke)

FISH PASSAGE TOUR – TOWNSVILLE 22 October 2009

Time Location Presenters Topics/Themes 8:30 – 8:55 CSIRO Carpark Rochae & Simon

Alfred Smallwood

- Introduction

- Welcome to Country

8:55 - 9:10 Coach transport

9:10 – 10:35 JCU Fish way

(Solander Road)

Ross Kapitzke - Purpose of fishways

- How the designs work

- Effectiveness of designs

9:35 - 9:55 Coach transport

9:55 – 10:10 Morning Tea at Riverview Tavern

10:10 – 11:20 Black’s Weir Damien Burrows

Terry Vallance

- Why do fish need to move?

- Different types of fish barriers

- Electrofishing survey

- Results- what was found, what wasn’t found

- Fish movement in Black’s Weir

11:20 – 11:50 Coach transport

11:50 – 12:15 Stuart Creek Greg Wilcox

Damien Burrows

- Background of the site

- Culvert removal

- Connectivity of Stuart Creek


12:40 – 14:40 Seafood lunch

Cleveland Bay cruise on board

the Goondooloo


14:55 – 15:10 Townsville commercial

fishing wharf

Greg Radley

- Commercial fisheries in Townsville

- Importance of local industry


15:40 CSIRO Carpark END of TOUR

PRESENTERS:

Ross Kapitzke: Environmental Engineer, School of Engineering and Physical Sciences, James Cook University

Damien Burrows: Aquatic Ecologist, Australian Centre for Tropical and Freshwater Research, James Cook University

Terry Vallance: Aquatic Ecologist, Tropical River Consulting. For more information go to http://tropicalriver.com.au

Greg Wilcox: Regional Manager, Conservation Volunteers Australia

Greg Radley: Commercial Fisherman, Townsville

Ross Kapitzke • JCU School of Engineering • fish passage design • fishways\jcu engineering_fish passage_university creek solander road -/4/09

University Creek Solander Road pipe culvert fishway PS01

(Photo: Ross Kapitzke 09/04/06) (Photo: Ross Kapitzke 11/04/06) (Photo: Ross Kapitzke 09/04/06)

Solander Road prototype pipe culvert fishway is located on University Creek on James Cook University campus in Townsville

University Creek has 13 native freshwater fish species – the crossing has been a barrier to migration to upstream habitat areas

the fishway was developed in 2005 – at least 9 native fish species have moved upstream through the crossing since 2006

collaborative funding support for the project was provided through the University and industry and community partners

CLIENT AND PARTNERS

Department of Main Roads

PROJECTOBJECTIVES

provide for upstream fish passage at crossing

develop remediation measures for culvert and creek

develop and test prototype fishway for pipe culverts

provide demonstration site for community

SCOPE OF WORK

concept design of fishway facilities

design and development of prototype fishways

detailed design and construction of fishway facility

hydraulic and biological monitoring and evaluation

CROSSINGDESCRIPTION

4-barrel 1200 mm diameter pipe culvert 7.2 m long

pipe culvert slope 1 in 50 (2%)

downstream apron 6.3 m long – slope 1 in 20 (5%)

road causeway – crest 1.9 m above culvert invert

FISH PASSAGE BARRIERS

water surface drop downstream of culvert

shallow water depths on downstream apron

high velocity and turbulence in culvert barrel

regular culvert cross section and lack of rest place

MITIGATIONMEASURES

Zone A – rock ramp / cascade fishway

Zone B – apron offset baffle fishway

Zone C – offset baffle fishway for pipe culverts

Zone C – corner “Quad” baffle fishway for pipes

OTHER FEATURES

hydraulic and biological monitoring facilities

(gauge boards, flow control boards)

provisions for adaptation and testing

Fish passage planning and design for small waterway structures

James Cook University School of Engineering and Physical Sciences provides consulting, research and development services in fish

passage planning and design, and development of fishway technology for small waterway structures (e.g. road culverts, grade control).

Fish passage facilities such as baffled and ramp structures are designed to meet multipurpose design requirements for these sites, to

overcome hydraulic barriers (e.g. high velocities, water surface drop), and to mitigate aquatic connectivity impacts within the waterway.

An ecohydraulics approach is adopted using integrated physical and biological performance assessment within the stream environment.

Consulting services include catchment prioritisation, corridor scale planning, project design, site evaluation and product development.

CONTACT Ross Kapitzke, Environmental Engineer Ph: 0402 316 404 E: [email protected]

Web: http://www.jcu.edu.au/engps/research/consultancies/JCUPRD_046895

School of Engineering and Physical Sciences

Culvert inlet / fishway exit works

Pipe baffle fishway – offset / corner

Rock ramp / cascade fishway

Apron – offset baffle fishway

Zone D Zone C Zone B Zone A

4–Barrel pipe culvert, causeway and apron

Rock ramp ridges / cascades

Flow

Low flow

Ross Kapitzke • JCU School of Engineering • fish passage planning and design • fishways\jcu engineering_fish passage_university creek discovery drive -/4/09

University Creek Discovery Drive box culvert fishway PS02

(Photo: Ross Kapitzke 10/04/06) (Photo: Ross Kapitzke 15/01/04) (Photo: Ross Kapitzke 13/01/04)

Discovery Drive prototype box culvert fishway is located on University Creek on James Cook University campus in Townsville

University Creek has 13 native freshwater fish species – the crossing was a barrier to fish migration under some flow conditions

the offset baffle fishway was developed in the culvert in 2002, and the corner “EL” baffle fishway was developed in 2005

upstream passage for all species has been available since 2003 – with more favourable conditions through the fishway zones

CLIENT AND PARTNERS

Department of Main Roads

PROJECTOBJECTIVES

provide for upstream fish passage at crossing

maintain hydraulic capacity and function of culvert

develop and test prototype fishway for box culverts

provide demonstration site for community

SCOPE OF WORK

concept design of fishway facilities

design and development of prototype fishways

detailed design and construction of fishway facility

hydraulic and biological monitoring and evaluation

CROSSINGDESCRIPTION

3-cell 3600 mm x 3000 mm box culvert 22 m long

box culvert slope 1 in 200 (0.5 %)

upstream and downstream aprons with wingwalls

natural grade control in creek 80 m downstream

FISH PASSAGE BARRIERS

water surface drop under low tailwater conditions

high velocities and turbulence at culvert outlet

high velocities in culvert barrel and at culvert inlet

regular culvert cross section and lack of rest place

MITIGATIONMEASURES

offset baffle fishway within Barrel # 1

corner “EL” baffle fishway within Barrel # 3

R & D facility provides for field testing of fishway

devices for comparison with hydraulic lab testing

OTHER FEATURES

hydraulic / biological monitoring facilities (gauge

boards, flow control boards, fishway fences, cage)

access facilities (ladders, platforms, handrails)

provisions for adaptation and testing

Fish passage planning and design for small waterway structures

James Cook University School of Engineering and Physical Sciences provides consulting, research and development services in fish

passage planning and design, and development of fishway technology for small waterway structures (e.g. road culverts, grade control).

Fish passage facilities such as baffled and ramp structures are designed to meet multipurpose design requirements for these sites, to

overcome hydraulic barriers (e.g. high velocities, water surface drop), and to mitigate aquatic connectivity impacts within the waterway.

An ecohydraulics approach is adopted using integrated physical and biological performance assessment within the stream environment.

Consulting services include catchment prioritisation, corridor scale planning, project design, site evaluation and product development.

CONTACT Ross Kapitzke, Environmental Engineer Ph: 0402 316 404 E: [email protected]

Web: http://www.jcu.edu.au/engps/research/consultancies/JCUPRD_046895

School of Engineering and Physical Sciences

Fishway Zone

Fishway Zone

Flow

Barrel 3

Barrel 2

Barrel 1 Barrel 2 Barrel 3Barrel 1

Fishway zone - corner baffle

Fishway zone - offset baffle

Types of Fish Barriers

Dams

Burdekin Dam Earth Bund

Sand Dams Weirs

Rita Island Aplins Weir

Natural Barriers Weed Chokes

Alligator Creek Falls Saltwater Creek

Road Crossings

Bogie River

Stuart Creek Culvert Removal

BEFORE: This crossing in Stuart creek was a barrier to fish, preventing them from moving upstream during crucial

stages of their lifecycle.

AFTER: Stuart creek after the crossing has been

removed (December 2008)

AFTER: 6 months after the crossing has been

removed, habitat connectivity has been restored. 5

different species of fish have now being found

upstream of the old crossing that were previously

absent from that reach of the creek. (May 2009)

Introduction to Fish Passage

Tim MarsdenQld Department of Primary Industries and Fisheries

Fish Passage Assessments and Barrier Modification“It will be interesting to note the effect of the

new Clare Weir on barramundi numbers”

S.H. Midgley 1977

Clare Weir and Pool and Weir Fishway

Presentation Structure

• Migration Strategies

• Barriers

• Fishway Designs Explained

• Critical Fish Passage Design Issues

• Fishways in the Burdekin

Clare Weir and Fish Lock

What is migration?

Why do Aussie fish do it?

• Regular movements of freshwater fish between

rivers, floodplains or the sea to breed and grow are

critical for the survival of native fish populations.

• Australia has a wide variety of freshwater rivers

and streams

• Most of the inland rivers dry up to a series of

waterholes between rains. On the coast many of the

streams flow year-round

• These changing stream conditions have shaped

the freshwater fish of Australia, with the “boom

and bust“ cycle leading to many unique migratory

patterns among our fish.

Diadromous & Potadromous

Diadromous

Diadromous fishes are truly migratory species whose distinctive characteristics

include that they (i) migrate between freshwaters and the sea; (ii) the movement is

usually obligatory; and (iii) migration takes place at fixed seasons or life stages.

•Catadromous: Describes diadromous fishes which spend most of their lives in

fresh water, and which migrate to sea to breed.

•Anadromous: Describes diadromous fishes which spend most of their lives at

sea, and which migrate to freshwater to breed.

•Amphidromous: Describes diadromous fishes in which migration between

freshwater and the sea is not for the purpose of breeding, but occurs at some

other stage of the life cycle.

Potamodromous

Fish species whose migrations occur wholly within freshwater for breeding and other

purposes.

Example Migration PatternMangrove Jack move from freshwater to the sea to breed and then the

young move back into freshwater rivers and lagoons to feed and grow.

Migratory Native Fish Fish Species and Life Stages• In Australia fish are moving at all life stages and sizes (7mm to 3000mm)

• Adults are dispersing after spawning and juveniles are dispersing after

hatching

• Need to know species utilising structure to determine what species will be

catered for

• Most structures need to cater for all

fish, not just single species

What is a

barrier?What is a Fishway?

• Fishways are structures placed on or around man-made barriers

(such as dams and weirs) to assist the natural migration of fishes.

• Most fishways enable fish to pass around the barrier by

swimming up a series of relatively low steps (hence the term “fish

ladder") into the waters on the other side.

• The velocity of water falling over the steps has to be great

enough to attract the fish to the fishway, but it cannot be so great as

to wash fish back downstream or to exhaust them to the point where

they cannot continue their journey upriver.

• Fishways can be quite simple, such as a rock ramp fishway,

which provides many small rocky steps, or very high-tech such as a

fish lift, which uses the same principle as lifts in tall buildings.

Culvert Fishways• Most culverts in Australia are no slope culverts and

mainly form velocity barriers to passage

• Some culverts may also have drops on downstream

side that inhibit passage

• New culverts should be equal or greater to channel

capacity and the base should be sunken into bed to

allow channel to form through culvert

• Retrofits may use baffles to break up flow or have

rock ramp downstream that backs water through

culvert.

• Rock ramps also help to fix drops on downstream

of culverts

• Retrofits generally can only operate on low to

moderate flows successfully

Nature Like Fishways• Nature-like fishways use large rocks and timbers to create pools and small

falls that mimic natural structures.

• Include Rock-Ramp, Log and Bypass Channel fishways

• Because of the length of the channel needed for the ladder, most such

structures are most appropriate for relatively low barriers.

• Have been used successfully on high barriers as partial width fishways

Denil Fishways• A Denil fishway uses a series of symmetrical close-spaced baffles in a

channel to redirect the flow of water

• Denil fishways need not have resting areas, although pools can be

included in one to provide a resting area or to help reduce the velocity of

the flow

• Such fishways can be built with switchbacks to minimize the space

Vertical Slot Fishways• A vertical slot fishway is similar to a pool and weir system except that each

cell wall has a narrow slot in it near the channel wall.

• This allows fish to swim upstream without

having to leap over an obstacle.

• Vertical slot fishways also tend to handle

reasonably well seasonal fluctuation in water

levels on either side of the barrier.

Lock Fishways• Fishlocks are used to transfer fish over high

dams where a vertical-slot fishway would be too

long.

• The fishlock consists of a entrance chamber

connected to a vertical chamber which extends to

the top of the weir. An exit channel connects the

vertical chamber to the storage.

• Migrating fish are attracted into the entrance

chamber and then into the bottom of the vertical

chamber.

• The vertical chamber is then filled to storage

level, where another attraction flow entice fish to

swim into the exit channel.

• The whole process is controlled by an on-site

computer.

High Fishways

• Fish lifts provide an elevator to carry

fish over a barrier.

• They are well suited to tall barriers.

• Fish swim into a collection area at

the base of the obstruction.

• When a critical mass of fish

accumulate in the collection area, they

are crowded into a hopper

• The hopper carries them into a flume

that empties into the storage above the

barrier.

22/10/09 Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected] 1

OceanWatch and NQ Dry Tropics Fish Passage Tour, Townsville, 22/10/09

22/10/09 Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected]/07/09 Ross Kapitzke_fish passage planning and design_case study [email protected]

University Creek fishways – Mitigation of migration barriers

Ross Kapitzke Environmental Engineer1

Mullet

Commercial fisheries

Gudgeon

Conservation & biodiversity

Freshwater fish values

Recreational fishing

Australian bass

Traditional/cultural values

Long finned eel

Freshwater fish spend all or part of their life cycle in freshwater environments


» Life cycle stages - Spawning and growth dispersal

» Recolonising habitats in response to flood or drought

» Compensation for downstream drift

» Gene flow through evolutionary-scale movement

Migration requirements for freshwater fish

Stream zones, fish life cycles, habitat zones & migration

Intermediate / transfer

Upland / headwater

Lowland / floodplain / freshwater wetland

Stream Zones

Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected]

Spawning habitat

Growth habitat

Potamodromous

Wholly freshwater

Catadromous

Marine spawning

Anadromous

Freshwater spawning

Juvenile dispersal migration

Adult spawning migration

Adult dispersal migration

Estuary / coastal / saline wetland

22/10/09 3


Fish migration barriers – small waterway structures

Dams, weirs, barrages Culverts, causeways


g

Flood gates, tide gates

y

Control structures, drop boards

channel simplification

Fish passage barrier problems – culvert inlet, outlet, barrel


velocity

turbulence

water surface drop

water depth

lack of shelter

Principal hydraulic barriers at waterway crossing zones

Source: Kapitzke 2009, Culvert Fishway Planning and Design Guidelines for DMR

6


High velocity

Flow depth

Turbulence

Water drop

No shelter

622/10/09 Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected]


Fishway component types for culverts and open channels


» Offset baffle fishway

» Corner “EL” baffle fishway

Baffle fishways for box culverts

Baffle fishways for pipe culverts

7

» Offset baffle fishway

» Corner “Quad” baffle fishway

» Rock ramp fishway

» Rock ramp cascade fishway

Ramp fishways for open channels


Application of fishway components in hydraulic zones


8


Offset baffle - box

Corner “EL” baffle

Offset baffle - pipe

Corner “Quad” baffle

Rock ramp

Rock ramp / cascade


Fish passage design for waterway structures – key requirements


Drainage, utility, stream integrity, environmental values, amenity

» Provide for fish passage over range of fish migration flows in the stream

» Provide suitable hydraulic conditions for fish – velocity, flow depth…

» Provide flow continuity, fish pathway, attraction flows and exit conditions

Fish passage


» Minimise obstruction to flow to not adversely affect flood capacity

» Minimise debris accumulation and sediment deposition

» Provide for ready cleaning and maintenance of culvert

» Provide for transport, drainage and other utility functions

» Maintain integrity of structure and adjoining waterway

» Maintain natural flow regime, geomorphic and ecological processes

» Provide for monitoring, access and maintenance of fishway facility

Drainage, utility, stream integrity, environmental values, amenity


Prototype #1 Discovery Drive offset baffle fishway

Prototype #2 Douglas Arterial Project rock ramp fishway

University Creek, Townsville, north Queensland, Australia

Prototype fishway design, development and testing

10

Prototype #2 Douglas Arterial Project rock ramp fishway

Prototype #3 Solander Road pipe culvert fishway

Prototype #4 Discovery Drive corner baffle fishway


Long-finned eel

Black catfishAgassiz's glassfish

University Ck fish community – 13 native species observed in 2003


Barred Grunter

Empire gudgeon Eastern rainbowfish

Hyrtl’s tandanSpangled perch

Purple spotted gudgeon

University Creek Solander Road – Prototype culvert fishway

Objectives

Prototype #3


» Aquatic habitat and connectivity assessment for University Creek

» Fish migration barrier assessment and evaluation of mitigation options

» Design, fabrication and installation of prototype fishway facilities

» Hydraulic and biological monitoring and evaluation of fishways

Scope of work

» Provide fish passage and remediate degraded waterway crossing

» Establish prototype fishway for pipe culvert and causeway

» Provide demonstration site for managers, designers & community


Solander Road crossing: Barriers to upstream migration

A – Downstream channel & drop-off

» Excess turbulence

» Water surface drop

B - Culvert outlet & apron slab

» Shallow flow

C - Culvert barrel

» High velocities

D – Culvert inlet & upstream channel

» High velocities


» Lack of shelter

Source: Kapitzke 2007, Solander Road pipe culvert fishway case study design and prototype monitoring report


» High velocities» Excess turbulence

» Lack of shelter


4–Barrel pipe culvert, causeway and apron

Flow

Low flowMedium flow

Solander Road prototype culvert fishway - Section

A - Rock ramp / cascade fishway

B - Apron – offset baffle fishway

C - Pipe baffle fishway – offset / corner

D - Culvert inlet / fishway exit works



4–Barrel pipe culvert, causeway

and apron

Flow

Apron rockZone D Zone C Zone B Zone A

Low flow Cascade rock

Rock ramp ridges / cascades


Solander Road prototype culvert fishway – Pipe & apron

Culvert Plan View

B

A

Flow


Barrel 1

C - Pipe – offset baffle fishway

Barrel 2

C - Pipe – corner baffle fishway


Section B-B: CulvertSection A-A: Culvert and apron

Corner baffle

Offset baffle

Apron - offset baffle

Flow

Offset / corner baffle

A

4–Barrel pipe culvert, causeway

and apron


Solander Road prototype culvert fishway – Overall plan

D - Culvert inlet / fishway exitBypass fishway

culvert and exit

channel (future)

4–Barrel pipe culvert and causewaySolander Road

Rock ramp ridgesLegend – rock protection



A - Rock ramp / cascade fishway

Rock ramp ridge / cascade

Table drain and bypass

entrance channel / rock

ramp fishway


C - Pipe baffle fishways

University Creek

Flow

Ridge rock

Batter rock

Apron rock

Cascade rock

Corner “Quad” baffle fishway for pipe culverts: Major features

Prototype #3 – Solander Road Corner ”Quad” baffle fishway

Good self cleaning attributes for sediment and debris passage

30/06/09 Ross Kapitzke_aquatic habitat and connectivity_opportunities for [email protected]/10/09 Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected] 17

Minimal effect on flow resistance and flow conveyance in culvert

Less suited to high gradient culverts and shallow high velocity conditions

Suited to range of flow depths, including relatively deep low velocity flow

Applied to culverts with high tailwater conditions

Provides low velocity zones, shelter areas and flow circulation for fish

17

University Creek Discovery Drive prototype culvert fishways

22/10/09 Ross Kapitzke_University Creek fishways_OceanWatch tour, Townsville Oct [email protected] 18Prototype #4 – Corner “EL” baffle Prototype #1 – Offset baffle


» Water surface drop at culvert outlet

» Shallow water depth within culvert

» High velocities within culvert barrel

» Streamlined flow and lack of resting places


» High velocities and lack of shelter at culvert inlet

Barriers to upstream migration at Discovery Drive crossing


High velocities and lack of shelter at culvert inlet

Discovery Drive culvert fishways - Prototypes #1 and #4

Fishway Zone

Fishway Zone

Flow

Barrel 3

Barrel 2

Barrel 1

P #4 – Corner “EL” baffleP #1 – Offset baffle


Barrel 2 Barrel 3Barrel 1

Fishway zone -corner baffle

Fishway zone -offset baffle


Offset baffle fishway for box culverts: Major features

Prototype #1 – Discovery Drive Offset baffle fishway



Less suited to low gradient culverts and deep slow water conditions

Suited to shallow high velocity flow in culverts

Applied to steep culverts or culverts with low tailwater conditions


21


Corner “EL” baffle fishway for box culverts: Major features

Prototype #4 – Discovery Drive Corner “EL” baffle fishway




Less suited to high gradient culverts and shallow high velocity conditions

Suited to relatively deep low velocity flow in culverts

Applied to culverts with high tailwater conditions


22

Discovery Drive

Douglas Arterial Ring Road

The Townsville Hospital

Initial diversion drain

4-span, 2-lane bridge

Douglas Arterial Road prototype rock ramp fishway

Prototype #2 – Douglas Arterial Road rock ramp fishway


Diversion drain

University CreekFlow

Diversion drain and

rock ramp fishways

Initial diversion drain

proposal

22/10/09 23

A

Flow

Ridge

Pool

200 - 300

Ridge rock

Detail – Ridge rock

Rock ramp plan

Douglas Arterial Road rock ramp fishway – design & construction


2000 2000 2000 3000

Flow

200100

RidgePool

Section A-A

22/10/09 24


Low flow

Douglas Arterial Road rock ramp fishway – flow conditions


Medium flow

22/10/09 25

Rock ramp fishway for open channels: Major features

Prototype #2 – Douglas Arterial Road rock ramp fishway



Little obstruction to flow and little effect on flow conveyance

Provides low velocity zones and multiple connected pathways for fish

Nature like fishways used to overcome water surface drops in streams

Suited as free standing grade control or attached to culvert inlet or outlet

Provides passage for variety of fish species at range of stream flows

26

Fish passage planning and design – JCU scope of services

Aquatic connectivity & impact assessment

Fish passage design – Road corridor scale

Fish passage design – Site scale

» Barrier significance

» Mitigation options and priority

» Fish corridor classification

» Priority road crossings

» Hydraulic barrier evaluation

» Fish passage options

Field prototype and laboratory testing

Design and fabrication of fishway devices

Industry guidelines and collaboration

» Hydraulic laboratory testing

» Field prototype testing

» Fishway device configuration

» Component fabrication

» Planning and design guidelines

» Collaboration & demonstration



Aquatic connectivity impact assessment – Catchment / reach scale

» Identify aquatic connectivity barriers at catchment / reach scale

» Evaluate barrier significance – habitat value x barrier threat

» Identify feasibility and priorities for barrier mitigation

Objectives


» Reconnaissance level habitat assessment

» Fish community and fish movement behaviour

» Barrier significance and connectivity impacts of structures

» Mitigation options, effectiveness and feasibility

» Prioritisation for barrier mitigation

Scope of work

Fish passage planning and design – Road corridor scale

» Identify fish movement corridor crossings of road corridor

» Establish aquatic connectivty goals and design characteristics

» Identify priority waterway crossings for fish passage (& integrated fauna)

Objectives


» Waterway character and fish habitat assessment

» Fish species, fish movement behaviour and characteristics for design

» Fish movement corridor locations and classification

» Fish passage goals and prioritisation of corridor crossings

» Mitigation design options for type crossings (and integrated fauna)

» Optimising waterway crossing type and configuration

Scope of work

Fish passage planning and design – Site scale

» Identify fish migration barriers at waterway structure

» Establish fish passage and multipurpose design requirements

» Define and evaluate fish passage (and integrated fauna) facility for site

Objectives


» Fish habitat, fish movement behaviour and characteristics for design

» Fish passage barrier evaluation – hydraulic zones

» Objectives, criteria and constraints for fish passage design

» Fish passage options and evaluation for multipurpose requirements

» Design configuration of fish passage (and integrated fauna) facility

Scope of work

Retrofit or new: Remediation of barriers at existing structures; Mitigation design for new structures

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