Log project for erosion

NEW PROJECT: Engineered Log Jam on the O’Connell River.
NEW PROJECT: Engineered Log Jam on the O’Connell River. Contributedcontributed

OWENS Creek is a small tributary of the Pioneer River that flows from the hills near Mt Charlton, alongside then into Cattle Creek near Gargett.

Along the way, it is an important water source for properties, as well as having plenty of quiet fishing spots and pretty places for picnics and birdwatching.

Some parts of Owens Creek, however, have been badly eroded as a result of historical vegetation removal and cattle access. Streambank erosion affects downstream users of the river as well the landholders who, in some cases, watch more of their properties crumble into the stream each wet season.

On one section of the river, rock bank armouring has been used to help stabilise the bank; over time, the armouring has altered the flow patterns. Erosion has been reduced but there has been little vegetation established on the new rocky banks and costly repairs have been needed.

A more natural bank stabilisation alternative has been shown to be very effective on a number of high-flow rivers in southern Australia and recently the technology has been brought to Queensland.

An Engineered Log Jam (ELJ) is a structure made out of fallen hardwood logs, which are anchored into a bank and into the streambed. The logs, which can be up to 8m long and 650mm in diameter, are arranged in a criss-cross stack so they slow water flow.

On the O'Connell River, where four ELJ structures were built near Cathy O'Connell River Road last year, the highest velocity part of the river has been realigned, reducing erosion on critical banks and forming pools where fish congregate above the log jams. The reduced erosion means downstream water quality is better and the revegetation program will improve riparian habitat.

The O'Connell site is the first step towards demonstrating ELJ technology is suitable for our tropical high-flow rivers.

Dr Andrew Brooks, a senior research fellow at the Australian Rivers Institute, is advising Reef Catchments and Pioneer Catchment and Landcare Group staff on how to approach a new project on Owens Creek.

Funded by the Queensland Government, construction will start on the new project in the dry season.

Topics:  environment, erosion



Local Real Estate

Featured Real Estate
FULLY SELF CONTAINED... $9500.00 From
Cabin $12.5K for 6 x 2.4 x 2.5m fully installed. D.I.Y $9.5k bare ...
RARE BRICK HOME IN... $380 Weekly
House 3 2 2
Close To Everything! $300 Weekly
House 3 1 1
Brand New, spacious and... $400 Weekly
House 4 2 2

Featured Jobs

Rockhampton jobs listed daily

Featured Jobs
Electrician Blackwater Full Time
EXPERIENCED U/G... Emerald Full Time
Mechanical Fitters &... Rockhampton Full Time
Mechanical Fitters &... Rockhampton Full Time


Local Partners

LATEST DEALS AND OFFERS

Local Jobs

Search for your next job now!
Learn More

View today's ePaper!

Read the digital edition
Learn More

Cars For Sale

Find cars for sale online now.
Learn More

Subscription Sale

Subscribe now for $1 for 14 days.
Learn More

Local Profile

Stay Connected

Get the news as it happens, in your inbox

You can change the newsletters you are subscribed to when you edit your profile

Edit Profile


Special Offers

Latest deals and offers

Horoscopes

Leo

You don't have to spend too much on a gift, but this may take a little more time in finding something appropriate for the one you love.

read more

Marketplace

Special Offers & Promotions

Compare & Save