Moreton Bay


Report Card legend
Catchment Facts
  • Total area: 1,523km2
  • Many of SEQ’s major rivers and creeks flow into Moreton Bay
  • Area of all catchments discharging into Moreton Bay:22,000km2
  • Moreton Bay is enclosed on three sides but well flushed in the eastern and central zones
  • The toxic cyanobacterium Lyngbya majuscula is a threat to the ecosystem health of Moreton Bay
Marine results
D-Deception Bay   
  • Decreased phytoplankton concentration.
  • Increased seagrass depth improving biological health rating.
DCentral Bay   
  • Low sewage nitrogen signal.
  • Phytoplankton concentration remaining relatively high.
FBramble Bay   
  • Large decrease in the sewage nitrogen signal and increase in water clarity.
D+Waterloo Bay   
  • Major increase in water clarity and decreased sewage nitrogen signal only partially offset by a reduction in biological health rating.
B-Eastern Bay   
  • Generally good water quality.
  • Decreased phytoplankton concentration partially offset by increased nitrogen concentration and increased extent of Lyngbya.
AEastern Banks  
  • Excellent water quality despite increased extent of Lyngbya.
FSouthern Bay   
  • Decreased sewage nitrogen signal and phytoplankton concentration.
  • Partially offset by increased overall nitrogen concentration and decrease in water clarity.
  • Decreased sewage nitrogen signal.
  • Increased seagrass depth improving biological health rating. 
DOverall Moreton Bay  
  • A general improvement in water quality throughout most areas of the bay after last year’s extensive heavy rain and flood events.

For more information on the Report Card, please visit:


Other Moreton Bay links:

Local Councils                             Community/Catchment Groups            Environmental Education Centres
Moreton Bay Regional Council Moreton Bay Coast Care Tangalooma Marine Education & Conservation Centre
Brisbane City Council Moreton Bay Environmental Alliance