Current State of CLLMM Environment

Warnings and Alerts

For current warnings and alerts: Refer to SA Health

For Fact Sheet on CLLMM Freshwater Blue Green Algal Bloom: Goolwa Channel algal bloom fact sheet

Water Quality in CLLMM (Coorong, Lower Lakes & Murray Mouth)

Progress towards the water quality targets (Matter 12, MDB Plan) – (DEW Technical report 2024/24)

1) Summary of Water Quality parameter targets for CLLMM:

2) Data available for Lakes Alexandrina and Albert Wetlands:

3) Assessment of Water Quality

NOTE: Insufficient data for assessment of Lakes Alexandrina and Albert Wetlands.

Murray-Darling Southern Basin Water Storage Volumes

Lake Alexandrina Water Level

Lake level for 2024/25

Total Daily Barrage Flows

Barrage flows for 2025

Historic Lake Levels and Barrage Flows

Operational Strategies

For the ‘Barrage Operating Strategy, 2019’ click here.

Here below is a summary of the Barrage Operating Strategy.

Ecological Objectives

Oct-Dec 2025

  • Maintain lake levels through Spring and early Summer to support growth of submergent and emergent aquatic plants and to support recruitment of Pygmy Perch and Southern Bell Frog.
  • Maintain continuous connectivity between Lake Alexandrina and the Coorong estuary to facilitate upstream passage of catadromous fish i.e. Congolli and Common Galaxias.
  • Prioritise flows to the Coorong North Lagoon to support the Coorong Food Web (i.e. invertebrates, estuarine fish, waterbirds, etc.), and to minimise the seasonal reduction in Coorong water levels and provide suitable habitat for growth and flowering of Ruppia Tuberosa and other associated macrophytes.
  • Look for opportunities to flush sediment in the Murray Mouth channel region, if additional flows become available.