The water quality in the Coomera River system is highly variable, and is dependent on seasons, rainfall and associated run-off volume. The freshwater section has poor quality in several areas, showing high nutrient concentrations and occasional algal blooms and aquatic weeds. Within the upper estuary, total nitrogen (TN), suspended sediment and chlorophyll are elevated (WBM, 2003).
The Healthy Waterways Report Card for the estuary part of the Coomera River declined slightly from B to C+, while the freshwater section went from B+ to B. This was mainly due to an increase in total nitrogen and total phosphorus at times outside the water quality guidelines. An increase in phytoplankton was observed in the estuary waters. Overall dissolved oxygen concentrations remained at healthy levels.
Find Report Cards on waterways in South East Queensland on the Healthy land and water website.
The Coomera River Catchment Study Guide is designed for use by school students and teachers, particularly those located within the Coomera River catchments. This guide details specific catchment processes, water quality and waterway cultural information and provides learning activities designed to be utilised in both outdoor and classroom activities.
To find out more about how you can become involved in caring for your catchment, why not consider volunteering in your catchment? Visit the Watergum website to find out how to get involved.
Find information on the ecosystem health of Gold Coast waterways on the Healthy land and water website.