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2022-04-12-P&E Agenda - Item 6 - Attachment 3- Appendix 2 - Current and Historical Distribution of Seagrass in the Noosa Estuary
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4.7.1 Rainfall
The highest daily rainfall at the Kiamba Bureau of Meteorology (BOM) Station 0405252 in
February 1999 again exceeded a total monthly rainfall of 1012 mm of rainfall for the month
with high daily rainfall in excess of 100 mm of rainfall occurring on the 1, 2, 8, 9 and 10
February 1999 (Kiamba BOM station 040525) (BOM 2021a) (Figure 4.6). Similarly high
rainfall was recorded at Boreen Point on the banks of Lake Cootharaba of 1012 mm of
rainfall for the month with high daily rainfall in excess of 100 mm of rainfall occurring on the
1, 2, 8, and 9 February 1999 (Boreen Point BOM station 40756) (BOM 2021b).
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Figure 4.6 Monthly total rainfall (mm) measured at Kiamba BOM station from 1952 to 2014
4.7.2 Riverine Flow
Total river discharge measures at Teewah Creek at Coops Corner (QLD Gauging Station
140002A3) (QLD Government 2021b) generally reflects the rainfall in the area, with several
peak monthly flood flows occurring since records began in 1972 following periods of high
rainfall. In particular, the highest recorded monthly flow occurred in February and March
1992 with a total monthly flow of 25813 ML and 15980 ML respectively for each month
(Figure 4.7). In contrast, the long-term average monthly flow is 2858 ML, more than 80%
lower than recorded during those peak flood flows. The total monthly flow recorded in
February 1992 was the highest on record for this gauging station. Other period of prolonged
flows occurred from February to June 1999 and flow exceeding 10000 ML per month in
August and September 2007, January and February 2008, December 2010, January 2011,
March 2012, February 2013 and February 2020 (Figure 4.7). Peak flows in the upper
catchment and subsequent flooding can be cause substantial mobilisation of sediment from
the upper catchment, along creeks and rivers to Laguna Bay.
2
The Kiamba Bureau of Meteorology (BOM) Station 040525 is approximately 26 km to the west of
Tewantin, and is the closest weather station that was operational in 1992 and 1999.
3
Flow has been recorded from May 1972 until present.
Assessing Distribution of Seagrass in the Noosa Estuary A-22
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