Tuckean Nature Reserve Options Study

Tuckean Nature Reserve Options Study

The Tuckean Swamp is one of the biggest wetlands in New South Wales

Once dubbed ‘Kakadu of the South’ for its abundant wildlife, the Tuckean was an engine room for fisheries productivity throughout Northern NSW. Unfortunately we now know that the modifications to the hydrology of the swamp, largely through floodplain drainage infrastructure, has resulted in poor water quality across it’s floodplain. Resulting in the associated loss of environmental values and despite previous attempts, only small-scale improvements have occurred, poor water quality still occurs regularly, and previous ecosystem values remain diminished.

The good news is, several large coastal wetland restorations in NSW have now proven a successful methodology to improve this scenario we find at the Tuckean Swamp.

OzFish Richmond River Chapter is taking steps towards improving the waterway. The first stage is to perform a hydrological study of the Swamp catchment. The study will provide potential options for change to water management in the Tuckean Swamp that will improve water quality. When available, resulting options from the study will be considered collaboratively with all Tuckean landholders and stakeholders to determine a mutually agreed way forward to improve the water quality and natural values of the Tuckean Nature Reserve.

LATEST UPDATES

Oct 2019 - TUCKEAN SWAMP Project Update

Project update provided to land owners and stakeholders. Latest on Water Quality - Water quality leaving the system over 2018 was largely dependent on the timing, frequency and magnitude of rainfall events. Acid discharge increases when low-lying areas dry out and gradients between groundwater and drains are greatest. During June and July pH of water leaving the system dropped down to below 4. Mid-year samples by the UNSW Water Research Lab team recorded a field pH of 2.08, one of the lowest readings they have ever recorded in NSW. Once groundwater levels recede below drain level, tidal flushing improves water quality again in the lower reaches of the Swamp.

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June 2019 - An Echo of Wings

An Echo of Wings: A History of the Tuckean Swamp published. Situated on the Far North Coast of New South Wales, the Tuckean was one of the largest swamps along the coast north of Sydney, in a landscape once full of swamps. Misunderstood and derided throughout much of European history, swamps have now been recognised as among the most productive environments alongside rainforests and coral reefs. It was not until the 1960s that scientific understanding about the critical significance of swamps in the natural environment began to emerge, by which time generations of farming families had made their homes and established communities within such landscapes.

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February 2019 - UNIVERSITY OF NEW SOUTH WALES Presentation: Tuckean Options Update

UNSW Water Research Lab researchers present project progress to Tuckean Swamp landholder group. This is a visual slideshow of Drainage Options Scenarios presented by Duncan Rayner.

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December 2018 - UNIVERSITY OF NEW SOUTH WALES Tuckean Modelling Scenarios

UNSW Water Research Lab researchers propose possible solutions to improve water quality, which they will test to review the changes to the Swamp.This document outlines a series of modelling scenarios that WRL recommends for the Tuckean floodplain. These scenarios are broad ranging and are intended to provide information on how each option would impact the floodplain, surrounding landholders and water quality in the region. These scenarios are draft suggestions only, based on our conceptual modelling of the site and modelling to date. The description of the scenarios refers to the management sections and general remediation strategies that are outlined in the accompanying documents.

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November 2018 -UNIVERSITY OF NEW SOUTH WALES Tuckean Swamp Conceptual Understanding

UNSW Water Research Lab researchers utilise data to gain conceptual understanding of Tuckean Swamp.This document provides a brief overview of what acid sulfate soils are, and a conceptual understanding how these soils contribute to poor water quality during dry and wet conditions. Using this understanding, and the substantial field data available, the floodplain has been sub-divided into preliminary management areas which are outlined in the final section of this memorandum. Each section has been prioritised based on its contribution to poor water quality in the region and a brief justification has been provided on each area.

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May 2018 - UNIVERSITY OF NEW SOUTH WALES WATER RESEARCH LAB

UNSW Water Research Lab researchers set up baseline monitoring of water quality, flow and ground water in the Swamp. The first step in determining possible options to improve water quality in the lower Tuckean Swamp is to perform a hydrologic and hydrodynamic (water movement through the landscape) study of the area. Water monitoring provides data to determine water management options for change to the lower Tuckean catchment that will improve water quality.

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February 2018 - TUCKEAN SWAMP OPTIONS STUDY

We now know that the past modifications to the hydrology of the Tuckean Swamp, largely through floodplain drainage works, has resulted in poor water quality across it’s lower catchment. Several large coastal wetland restorations in NSW have now proven successful in reducing poor water quality being exported from drained swamp situations similar to the Tuckean Swamp. A partnership of organisations has formed to use this new knowledge toward implementing actions for the improvement of water quality at the Tuckean Swamp

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Project consortium includes OzFish, DPI Fisheries, Office of Environment and Heritage, National Parks and Wildlife Service, Local Land Services and Ballina, Lismore and Richmond Valley Councils, Rous County Council and The Nature Conservancy.

For all enquiries please contact Cassie Price 0402 408 791.