Water resource management

Lake Moondarra and Rifle Creek are important water resources for our Mount Isa Mines operations and the Mount Isa community.

Mount Isa Mines is the Resource Operating Licence holder of Lake Moondarra Dam. Details of monthly water allocations from Lake Moondarra are posted below.

If you live downstream of Lake Moondarra or Rifle Creek Dam, you have the opportunity to register and be added to an Emergency Notification Database in line with the Emergency Action Plans for the respective water sources.

Moondarra Dam water allocation table

Allocation and usage as of 1 July 2025 in megalitres (ML)

	Total water authority (ML)	Total water allocation for year (ML)	YTD allocation water usage (ML)	Remaining balance (ML)
Mount Isa City Council	12,500	12,500	0	12,500
Mount Isa Mines	12,500	12,500	0	12,500
Mount Isa Water Board (distribution)	1,250	1,250	0	1,250
Mount Isa Water Board (any)	50	50	0	50
Total	26,300	26,300	0	26,300

Dam Water Supply Scheme Operational Report announced allocation for the 2025-26 reporting year (effective 1 July 2025)

Medium priority announced allocation (AA_M) 100%
(model supplied by Department of Natural Resources, Mining and Energy)

Moondarra Dam

Elevation	325.30 metres (Australian Height Datum)
Current storage volume	76,269 megalitres
Nominal operating volume	26,708 megalitres
Current loss allowance	0 megalitres
Clear water lagoon projected storage loss	1,290 megalitres
Usable volume	26,300 megalitres

Additional parameters

Medium priority allocation	26,300 megalitres
Current storage surface area	1,660 hectares
Projected storage loss for MD	26,315 megalitres
Medium priority diverted volume	0 megalitres

To be added to the dam emergency notification database of your choice, please complete and submit this form. Fields marked with an * are mandatory.