 |  | | | 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
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| | | Marine results |
| | | | D- | | Deception Bay |
| | | - Decreased phytoplankton concentration.
- Increased seagrass depth improving biological health rating.
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| | | D | | Central Bay |
| | | - Low sewage nitrogen signal.
- Phytoplankton concentration remaining relatively high.
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| | | F | | Bramble Bay |
| | | - Large decrease in the sewage nitrogen signal and increase in water clarity.
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| | | D+ | | Waterloo Bay |
| | | - Major increase in water clarity and decreased sewage nitrogen signal only partially offset by a reduction in biological health rating.
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| | | B- | | Eastern Bay |
| | | - Generally good water quality.
- Decreased phytoplankton concentration partially offset by increased nitrogen concentration and increased extent of Lyngbya.
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| | | A | | Eastern Banks |
| | | - Excellent water quality despite increased extent of Lyngbya.
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| | | F | | Southern Bay |
| | | - Decreased sewage nitrogen signal and phytoplankton concentration.
- Partially offset by increased overall nitrogen concentration and decrease in water clarity.
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| | | C- | | Broadwater |
| | | - Decreased sewage nitrogen signal.
- Increased seagrass depth improving biological health rating.
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| | | D | | Overall Moreton Bay |
| | | - A general improvement in water quality throughout most areas of the bay after last year’s extensive heavy rain and flood events.
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