Tack­ling ero­sion along the beaches

Fremantle Gazette - - NEWS - Jon Bas­sett

STATE Gov­ern­ment co-or­di­na­tion could be needed in the fight against coastal ero­sion threat­en­ing sev­eral sec­tions of the metropoli­tan coast from Fre­man­tle north.

The six coun­cils re­spon­si­ble for about 25km of coast­line face get­ting less sand and more dam­age to their beaches and in­fra­struc­ture in com­ing years from a triple-whammy of sea rise, storms and changes to nat­u­ral sand flow caused by groynes and moles.

There is also a pend­ing cy­cle of su­per tides ex­pected to hit Perth about 2031.

State Gov­ern­ment pol­icy rec­om­mends coun­cils plan for a 0.9m sea rise in the next 100 years and Port Beach has been de­clared WA’s top ero­sion hot spot among 55 oth­ers be­ing mon­i­tored in the State.

In a bid to as­sist some of the prob­lems along the coast, where seabreezep­ow­ered long­shore drift can move sand south to north in lo­cal zones called cells, an­nual anti-ero­sion grants of about $3.4 mil­lion were awarded by the State Gov­ern­ment to the coun­cils last month. Projects ranged from Stir­ling and Fre­man­tle coun­cils study­ing the ero­sion threats to their beaches to Cottes­loe restor­ing a small sec­tion of its dunes.

Fre­man­tle got the lion’s share of $3.25m to dump pro­tec­tive sand for 10 years on its heav­ily dam­aged Port Beach after it was hit by an­other storm in May.

The port city’s long-term strat­egy is to re­treat from the en­croach­ing waves while in­ves­ti­gat­ing more groynes or sea­walls in a re­port due this Novem­ber.

It also shares $18,750 with neigh­bour­ing

Ero­sion dam­age at Fre­man­tle's ' P Port t Beach this year.

Mos­man Park for a con­tin­u­ing study into sand move­ment along their shared Port, Leighton and Mos­man Park beaches.

A Ned­lands coun­cil spokes­woman said it would be “in­ter­ested” in co-or­di­nated anti-ero­sion work from Fre­man­tle to Stir­ling if it was based on a “sound” sci­en­tific un­der­stand about what was af­fect­ing the coast.

Asked if a co-or­di­nat­ing body would be set up, a De­part­ment of Plan­ning, Lands and Her­itage spokes­woman said there was no “one size fits all’ ap­proach to coastal ero­sion be­cause dam­age was spe­cific to lo­ca­tions, the en­vi­ron­ment at each spot and plan­ning in those ar­eas.

The spokes­woman said the Gov­ern­ment worked with coun­cils on coastal haz­ards to cre­ate over­all poli­cies.

Pic­ture: An­drew Ritchie

Cottes­loe deputy mayor Lor­raine Young with Cott Coast Care chair­man Mike Ewing get­ting on with dune re­pairs.

Storm surge waves reache reached un­der the In­di­ana restau­rant in Cottes­loe.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.