Field Trip Highlights the Importance of Wetlands and Catchment Stewardship

By Jesse Lewis, Tasmanian Irrigation Environmental Specialist

A recent field trip to Pitt Water - Orielton Lagoon, located west of Sorell in south east Tasmania, was a special opportunity to explore one of our State’s most significant wetlands.

Recognised under the international RAMSAR Convention, the lagoon is a wetland of global importance supporting migratory shorebirds along the East Asian - Australasian Flyway. More than 50 million migratory water birds from over 250 different populations rely on this Flyway, further adding to the environmental importance of Orielton Lagoon.

The event, organised by NRM South for World Wetlands Day observed on 2 February each year, focused attention on Tasmania’s unique wetland ecosystems. Wetlands such as Pitt Water - Orielton Lagoon play a critical role in maintaining healthy landscapes. They improve water quality by filtering sediments and nutrients, store carbon, reduce flood impacts, and provide essential breeding and feeding habitats for both marine and terrestrial species. Their ecological value is matched by the benefits they provide to surrounding communities, industries and to agricultural production.

A key takeaway from the visit was the strong connection between catchment activities and wetland health. Every decision made upstream, whether related to irrigation, land management or infrastructure, has downstream consequences. Efficient irrigation practices reduce runoff and minimise nutrient movement into waterways. Maintaining and enhancing riparian vegetation helps stabilise streambanks, filter sediments and protect water quality. Mindful fertiliser management, soil conservation and drainage design further reduce impacts downstream.

The field trip reinforced that wetlands cannot be protected in isolation. Their future depends on collaboration between numerous stakeholders, including irrigators, landowners and the broader community.

As construction of the Greater South East Irrigation Scheme commences over the coming years, this sense of shared purpose and collaboration is crucial for safeguarding the region’s long-term environmental health and economic prosperity.

Through continued partnerships and a shared commitment to sustainable water management, we can ensure Pitt Water - Orielton Lagoon remains a thriving ecosystem. Partnerships such as these reflect our broader commitment to stewardship, resilience and the long-term sustainability of Tasmania’s water resources, and align with our Values.

Learn more about NRM South Home - NRM South and Tasmanian Irrigation’s Greater Southeast Irrigation Scheme Greater South East Irrigation Scheme - Tasmanian Irrigation.