Wānaka Sun       

Boaties asked to avoid areas laid with weed mats

Posted at 6:00am Thursday 31 Dec, 2020 | By Jo Galer newsdesk@thewanakasun.co.nz

Boaties seeing new yellow buoys with red and black stickers on them at locations around Lake Wānaka can expect there to be weed-prevention mats lurking beneath and should avoid them.  

Before the end of 2020  LINZ will install 15-20 buoys at locations including Paddock Bay, Parkins Bay and Glendhu Bluff Bay. Signs will also be installed near where hessian matting has been laid. 

Land Information New Zealand (LINZ) leads restoration operations on Otago's lakes and said

hessian matting was laid to supress the spread of the highly invasive waterweed, lagarosiphon.

Boaties, tourism operators and recreational users on Lake Wānaka were asked to be

extra careful to avoid damaging the newly installed biodegradable matting.

“Left uncontrolled lagarosiphon takes over lakes, creating dense forests of weed below the

water's surface. It can block boat motors, ruin swimming, and smother precious native

plants,” LINZ Biosecurity and Biodiversity Group Manager Megan Reid said.

“Boat operators need to avoid approaching by boat or fishing across these areas as there's a

risk of prop and fishing lure entanglement which damages the matting and makes it

ineffective.”

Ms Reid said as well as avoiding the areas with matting on Lake Wānaka all lake and river

users were asked to help protect and get behind lake restoration efforts by checking, cleaning and drying boat props and trailers, jet skis, kayaks and paddleboards, and equipment such as fishing lines before they enter the water limits the spread of weeds.

“If we want to continue using lakes and rivers as we always have and see native birds, plants

and fish return, then we need to check, clean and dry boats and sports equipment between waterways.”

Read edition 1007 of the Wānaka Sun here. 

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