Queensland Floods February 2008
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Report on Queensland Floods February 2008 1 2 3 4 5 6 1. Damage to boats in Airlie Beach. (John Webster) 2. High velocity flow in the Don River at the Bruce Highway Bridge in Bowen. (Burdekin Shire Council) 3. Flash flooding in Rockhampton on the 25th February. (Courier Mail Website) 4. A picture taken by the RACQ Central Queensland Rescue helicopter crew shows Mackay heavy floodwaters. 5. Hospital Bridge in Mackay during Mackay flash flood event. (ABC Website) 6. Burdekin River at Inkerman Bridge at Ayre/Home Hill. (Burdekin Shire Council) Note: 1. Data in this report has been operationally quality controlled but errors may still exist. 2. This product includes data made available to the Bureau by other agencies. Separate approval may be required to use the data for other purposes. See Appendix 1 for DNRW Usage Agreement. 3. This report is not a complete set of all data that is available. It is a representation of some of the key information. Table of Contents 1. Introduction ................................................................................................................................................... 3 Figure 1.1 Peak Flood Height Map for February 2008 - Queensland..................................................... 3 2. Meteorological Summary ............................................................................................................................. 4 2.1 Meteorological Analysis......................................................................................................................... 4 Figure 2.1.1 Track of Tropical Low Pressure System from the 8th to the 13th of February 2008. ............. 4 Figure 2.1.2 Mean Sea Level Pressure Charts for Australia at 10 am from the 10th to the 17th of February 2008. ............................................................................................................................................ 5 Figure 2.1.3 Mean Sea Level Analysis near Airlie Beach at 3am on the 12th of February 2008. ............. 6 Figure 2.1.4 Wind analysis at 1500 metres above Mean Sea Level at 10pm on the 11th of February 2008............................................................................................................................................................. 7 Figure 2.1.5 Areas of Warm Air Advection (WAA) and Moist Tropical Air at 10pm on the 11th of February 2008. ............................................................................................................................................ 8 Figure 2.1.6 Map of the Pioneer River basin displaying 24 hour rainfall totals to 10 am on the 15th of February. ..................................................................................................................................................... 9 Figure 2.1.7 Mean Sea Level pressure analysis around Mackay at 9am on the 15th of February 2008. 10 2.2 Radar Imagery Analysis........................................................................................................................ 11 Table 2.2.1 Hourly Rainfall totals for Upper Barrattas Alert and Dalbeg Alert for the 24 hours ending at 9am on the 12th of February 2008. ............................................................................................................ 11 Figure 2.2.1 Sequence of Radar Imagery from Mt Stuart from 7pm to 9:20 pm on the 11th of February 2008........................................................................................................................................................... 12 Figure 2.2.2 Sequence of radar imagery from Gladstone from 2am to 6am on the 12th of February....... 13 Figure 2.2.3 Map of the Pioneer River basin displaying 6-hour rainfall totals to 10 am on the 15th of February. ................................................................................................................................................... 14 Table 2.2.2 Hourly Rainfall totals for Mackay Alert, Gooseponds Alert and Hospital Bridge Alert for the 24 hours ending at 10am on the 15th of February 2008............................................................................ 15 Figure 2.2.4 Sequence of Radar Imagery from Bowen from 8am to 8:50am on the 15th of February 2008. ................................................................................................................................................................... 16 Figure 2.2.5 Map of the Townsville and Thuringowa displaying 6-hour rainfall totals to 1am on the 16th of February. ................................................................................................................................................... 17 Table 2.2.3 30 Minute Rainfall Observations from Rockhampton Airport on the 25th of February 2008.17 Figure 2.2.6 Sequence of Radar Imagery from Gladstone from 2:20am to 3:30am on the 25th of February 2008. .......................................................................................................................................... 18 2.3 Conclusion ............................................................................................................................................. 19 3. Hydrology .................................................................................................................................................... 20 Table 3.0.1 Peak Flood Height Comparison to Records........................................................................... 20 Figure 3.0.1 Peak Flood Height Map for February 2008 - Queensland................................................. 21 Figure 3.0.2 Queensland Isohyetal Rainfall Map – February 2008.......................................................... 22 Figure 3.1.1 Rainfall Map of Queensland - February 2008..................................................................... 23 Figure 3.1.2 Rainfall Map for the Brisbane Basin for 10 days to 09:00 10/2/2008 ................................. 24 Figure 3.1.3 Rainfall Map for the Border Rivers for 10 days to 09:00 10/2/2008.................................... 25 Figure 3.1.4 Rainfall Map for Townsville to Mackay for 7 days to 09:00 17/2/2008 ............................... 26 Figure 3.1.5 Rainfall Map for Townsville to Mackay for the 24 hours to 09:00 12 February 2008 ......... 27 Figure 3.1.6 Rainfall Map for Townsville to Mackay for the 24 hours to 09:00 15 February 2008 ......... 28 Figure 3.1.7 Rainfall Map for Townsville to Mackay for the 24 hours to 09:00 16 February 2008 ......... 29 Figure 3.1.8 Rainfall Map for the Fitzroy Basin for 7 days to 09:00 17/2/2008...................................... 30 Figure 3.1.9 Rainfall Map for the Fitzroy Basin for 24 hours to 09:00 25/2/2008 ................................... 31 3.2 Rainfall Intensity .................................................................................................................................... 32 Table 3.2.1 CRC-FORGE estimates for Mackay Alert (33303) (millimetres)............................................ 32 Figure 3.2.1 Hourly Hyetographs for Dalbeg (Burdekin R) and Upper Barrattas (Haughton R)............... 33 Figure 3.2.2 Intensity Frequency Duration Rainfall Analysis for Dalbeg (Burdekin R) and Upper Barattas (Haughton R) ............................................................................................................................................. 34 Figure 3.2.3 Hourly Hyetographs for Ida Creek and Emu Creek (Don R)................................................. 35 Figure 3.2.4 Intensity Frequency Duration Rainfall Analysis for Ida Creek and Emu Creek (Don R)...... 36 Figure 3.2.5 Hourly Hyetographs for Mackay and Gooseponds (Pioneer R) ........................................... 37 Figure 3.2.6 Intensity Frequency Duration Rainfall Analysis for Mackay and Goosponds (Pioneer R)... 38 Figure 3.2.7 Hourly Hyetographs for Deeragun (Bohle R) and Rockhampton (Fitzroy R)........................ 39 Figure 3.2.8 Intensity Frequency Duration Rainfall Analysis for Deeragun (Bohle R) and Rockhampton (Fitzroy R).................................................................................................................................................. 40 Figure 3.2.9 Intensity Frequency Duration Rainfall Analysis for Southwood (Moonie R) ........................ 41 3.3 Rainfall Totals ........................................................................................................................................ 42 Report on Queensland Floods – February 2008 nd th Table 3.3.1 Rainfall Totals for the South East Coast 2 -8 February 2008............................................ 42 nd th Table 3.3.2 Rainfall Totals for the Brisbane River Basin 2 -8 February 2008 ...................................... 45 nd th Table 3.3.3 Rainfall Totals for the Weir and Moonie Rivers 2 -8 February 2008 ................................. 49 th Table 3.3.4 Rainfall Totals for the Fitzroy and Adjacent Rivers 11-18 February 2008 .......................... 50 th Table 3.3.5 Rainfall Totals for the Central Coast Rivers Rivers 11-18 February 2008.......................... 53 3.4 Peak Flood Heights .............................................................................................................................. 58 Figure 3.4.1 Peak Flood Height Map for South East Queensland for February 2008 ............................. 58 Table 3.4.1 Peak Flood Heights for South East Queensland for February 2008...................................... 59 Figure 3.4.2 Peak Flood Height Map for the Fitzroy