2.2.2 Rainfall Rainfall statistics for Rockhampton Aerodrome (BOM station #039083, 1939 to current) are displayed in Figure 2.3. On average, 798.5 mm of rainfall occurs annually. Rainfall is generally highest from December to March. Potential evaporation for the region is 1,822 mm/y on average. The highest evaporation occurs from October to March. Evaporation is reduced during the dry season in winter, with the lowest evaporation occurring in June.
Figure 2.3
Mean rainfall at Rockhampton Aero (Source BOM)
Figure 2.4
Rockhampton Aero 9am and 3pm Wind Rose (Source BOM)
2.3 Topography and drainage MMM is located west of the Mount Morgan township on the eastern flanks of the Dee Range at an elevation of approximately 250 – 300 mAHD. The Dee River is the immediate receiving water body adjacent and to the east of the site. The Dee River flow south through an extensive alluvial plain at the margin of the Biloela Basin, ultimately flowing into the Don River and then the Fitzroy River, where it reaches Rockhampton and the coast. The MMM is largely bound to the east by the Dee River and bound to the north and west by undulating hills. 2.4 Geology The geology is described in detail in the Progressive Rehabilitation and Closure Plan – Mount Morgan Mine EPML004013 (GHD, 2023) and is summarised below.
GHD | Heritage Minerals Pty Ltd | 12638246 | Groundwater Quality Review 2024 8
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