{"id":6736,"date":"2021-12-20T23:33:36","date_gmt":"2021-12-20T23:33:36","guid":{"rendered":"https:\/\/terrain.org.au\/constructed-wetlands-copy\/"},"modified":"2021-12-21T01:52:53","modified_gmt":"2021-12-21T01:52:53","slug":"pile-fields","status":"publish","type":"post","link":"https:\/\/terrain.org.au\/pile-fields\/","title":{"rendered":"Pile fields a solution for erosion"},"content":{"rendered":"[mk_page_section bg_image=”https:\/\/terrain.org.au\/wp-content\/uploads\/2021\/12\/drfa-pile-fields-web-banner.jpg” bg_position=”center center” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” min_height=”500″ js_vertical_centered=”true” padding_top=”” padding_bottom=”” section_id=”donate” el_class=”donate-1″ sidebar=”sidebar-1″][vc_column][vc_empty_space height=”70px”][mk_fancy_title font_family=”none” align=”center”]PILE FIELDS A SOLUTION FOR EROSION<\/span><\/span>[\/mk_fancy_title][mk_padding_divider size=”67″][\/vc_column][\/mk_page_section][mk_page_section section_id=”great-1″ sidebar=”sidebar-1″][vc_column width=”1\/2″ css=”.vc_custom_1563789112768{padding-right: 36px !important;padding-left: 0px !important;}” el_class=”great_header_left”][mk_padding_divider size=”100″ visibility=”hidden-nb”][mk_padding_divider size=”15″ visibility=”visible-sm”][mk_padding_divider visibility=”visible-tl”][mk_fancy_title size=”28″ letter_spacing=”4″ margin_bottom=”0″ font_family=”none” el_class=”terrain-title-2″]PROTECTING THE MOSSMAN RIVER AND ITS BRIDGES<\/strong>[\/mk_fancy_title][mk_padding_divider size=”60″ visibility=”hidden-nb”][mk_padding_divider size=”5″][vc_column_text css=”.vc_custom_1640047716402{margin-bottom: 0px !important;}”]Timber pile fields will help to protect the Mossman River and two of its bridges in the upcoming wet season.<\/p>\n

Flood-damaged riverbanks at Foxton Bridge and Anich\u2019s Bridge in Mossman have been repaired using pile field structures, bringing a new approach to erosion solutions to the Far North.<\/p>\n

Terrain NRM has been working with Douglas Shire Council, landholders and Neilly Group Engineering on the two river projects, which are jointly funded by the Australian and Queensland governments under Disaster Recovery Funding Arrangements.<\/p>\n

Terrain\u2019s Jen Mackenzie said floodwaters had stripped back 80 metres of riverbank at Foxton Bridge and 30 metres at Anich\u2019s Bridge.<\/p>\n

\u201cA monsoonal event in early 2019 left trees hanging by their roots and changed the river\u2019s course,\u2019\u2019 she said. \u201cNow the erosion is progressively threatening these bridges and the rail corridor. Without enough land for rock battering or vegetation on the banks themselves, timber pile fields are a good option.\u201d<\/p>\n

What are pile fields?<\/h3>\n

Pile fields are multiple rows of piles, designed to slow down water and build up sediment, to protect and repair damaged riverbanks. They are used in southern Australia and in other parts of the world, and one was recently constructed in the Herbert River catchment near Ingham as part of disaster recovery work.<\/p>\n

\u201cThe challenge, when building these fields in the Wet Tropics, is the high volume of rain,\u2019\u2019 Ms Mackenzie said. \u201cIn this region more robust engineering and modelling is needed, for designs tailored to our weather conditions.\u201d<\/p>\n

To create the pile fields, seven-metre hardwood poles were driven five metres into the riverbed and bank. The work in Mossman also included riverbank re-profiling, rock buffers and revegetation with native trees.[\/vc_column_text][\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1563789122720{padding-right: 0px !important;padding-left: 34px !important;}” el_class=”great_header_right”][mk_padding_divider size=”206″ visibility=”hidden-sm”][mk_padding_divider size=”50″ visibility=”hidden-sm”][vc_column_text css=”.vc_custom_1640047078241{margin-bottom: 0px !important;}”]\"\"[\/vc_column_text][vc_column_text css=”.vc_custom_1640047702527{margin-bottom: 0px !important;}”]Ms Mackenzie said the result was a win for the environment and the community.<\/p>\n

Long-term solutions to erosion<\/h3>\n

\u201cVegetation along the riverbanks is the long-term solution that helps to stop erosion and other damage caused during major floods,\u2019\u2019 she said. \u201cThe Mossman River flows to the ocean and when it floods debris and sediment is carried downstream and out to the Great Barrier Reef where it impacts seagrass beds, fish and other marine life.<\/p>\n

\u201cThe pile fields are designed to trap sediment and support vegetation so in coming years we expect vegetation to establish in and around the pile fields and in time, as the timber piles break down, this vegetation will take over.\u201d<\/p>\n

More about our disaster recovery projects<\/a><\/strong>[\/vc_column_text][\/vc_column][\/mk_page_section][mk_page_section section_id=”great-1-blog” sidebar=”sidebar-1″][vc_column][mk_padding_divider size=”105″ visibility=”hidden-sm”][mk_padding_divider visibility=”hidden-sm”][\/vc_column][\/mk_page_section][vc_row fullwidth=”true” fullwidth_content=”false” id=”post_grid_filter_1″][vc_column][vc_column_text el_class=”grid_greate_3″ css=”.vc_custom_1597127444819{margin-bottom: 0px !important;}”]\n

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