Roches Beach Access Public Information Session

Updated 7 December 2017

Due to concerns expressed from some members of the community about access to Roches Beach, Council has identified options to re-install beach access near the eastern end of the canal.

Following a public information session on Wednesday 6 December, Council is now inviting members of the community to provide feedback on these options.

Council has identified three beach access options near the canal (previous access) for kayaks, canoes and dinghies (up to 5m). See more information below on these options.

 

Feedback

Feedback on the Roches Beach Access Options can be made by:

  • Completing the online feedback form below
  • Visiting the Council Offices at 38 Bligh Street, Rosny Park where you can view the options and plan, and complete the feedback form and drop it in the box provided;

Feedback will close on Wednesday 20 December 2017. 

 

 

Background/why the decision to raise the dunes at Roches Beach

Roches Beach has been identified as the most vulnerable site in Tasmania to coastal erosion and inundation due to low level dunes and limited sand volume. This area is identified as being at risk of immediate coastal erosion for a present day 1 in 100 year storm event. Erosion of the dune on Roches Beach will result in inundation of the land behind the dune.

Following the storm event in July 2011, Council engaged Water Research Laboratory (University of NSW) to inspect Roches Beach and Cremorne Beach to identify a priority list of works to help remediate the site and protect resident’s properties and infrastructure (Council facilities, NBN, water main, sewer). The site was identified as requiring additional volume and height of dunes.

WRL recommended dune reconstruction as a first priority to avoid immediate erosion and overtopping. The dune reconstruction was to be designed to meet the target dune crest height of 3 metres (Australian Height Datum).

In 2012 Council took action to build the low points in the dunes. Two significant projects were completed to remove low points in the dunes along Roches Beach using large amounts of sand. This work has improved protection of the properties behind the dunes.

In March 2014, Council approved the construction of the proposed sand dune and Disability Discrimination Act (DDA) compliant access at Lauderdale Canal on to Roches Beach.

After concerns from some members of the public regarding the loss of access for kayaks, canoes and dinghies, Council has investigated options to provide beach access for these watercraft near the previous access.

 

Beach Access Options

James Burbury, engineer, was engaged to assess three beach access options near the previous access, as adopted by Council’s Notice of Motion at its meeting of 16 October 2017.  In his assessment of the options he has noted:

  • The design is not intended to be a formal boat ramp, but to provide beach access;
  • Therefore the design criteria should not confirm with the Australian Standards for boat ramps or local recommendations (MaST);
  • Recommends the use of Flexmat – flexible concrete block mattresses, for the surface of the beach access.

 

View a picture of the ‘flexmat’, which is intended to be used for the surface of the beach access.

 

The following options are based on the ramp being at a crest level of RL 3 to be similar to the adjacent dunes.

 

Option 1 – North of Previous Access

The below plan shows a beach access near the existing toilet block.  This toilet block will be demolished for a new toilet block to the South.

The proposed beach access will be surfaced with ‘flexmat’ (concrete block matting) from near the crest of the dune ramping down to the beach.

Pros –   Provides ramp access to the beach at a location where a partial ramp already exists on the car park side.  This option will have least impact on the car park.

             Allows the existing timber ramp to be used by those who prefer this surface.

Cons –   Construction of a hard surface into a mobile dune will require sand nourishment in the future due to erosion on both sides of the beach access.

             Heavy storms may lift the flexmat.

             The location of this ramp is likely to impact on the existing toilet block soakage trenches.

Option 1 - North of Previous Access(282 kb)

 

Option 2 – At the Previous Access

The attached plan shows the removal of the existing timber ramp to install a new ‘flexmat’ surfaced ramp to the beach.

The existing car park needs to be built up in level to ramp up to the dune crest.

Pros –   Provides a central ramp access to the beach.

             This does not depend on the toilet block demolition/construction.

Cons –   Construction of a hard surface into a mobile dune will require sand nourishment in the future due to erosion on both sides of the beach access.

             Heavy storms may lift the flexmat.

             Requires the existing timber ramp to be removed.

             Possible loss of some car parking.

             Is more costly than the North access option as the car park needs to be raised in level.

Option 2 - At the Previous Access(211 kb) 

 

Option 3 – South of Previous Access

The attached plan shows a beach access near the proposed new toilet block, South of the previous access.

The proposed ramp will be surfaced with ‘flexmat’ (concrete block matting) and the existing car park will need to be raised in order to ramp up to near the crest of the dune.

Pros –   Allows the existing timber ramp to be used by those who prefer this surface.

Cons –   Construction of a hard surface into a mobile dune will require sand nourishment in the future due to erosion on both sides of the beach access.

             Heavy storms may lift the flexmat.

             Possible loss of some car parking.

             Is more costly than the North access option as the car park needs to be raised in level.

             Brings vehicle movements closer to pedestrian movements near the toilet.

Option 3 - South of Previous Access(676 kb)

 

More information

To read a copy of the Council report on beach access options for Roches Beach: 

Assessment of Beach Entry Management Options at Roches Beach Report(2346 kb) 

* Mandatory Field

Roches Beach Access Options - Feedback closes 20 December 2017
Name
Name*
Email*
Address - Street*
Address - Suburb*
Address - State*
Which option do you prefer - Please select only one
Option 1 - North of previous access
Option 2 - At previous access
Option 3 - South of previous access
Please provide any other comments or general feedback below
If you see this, leave this form field blank.

Send a copy of the submitted form to this email address.

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