Fires near water supplies will cause water quality problems
Fires near on-farm water supplies can cause several problems:
- Ash and windblown debris can accumulate in the water making the water unattractive to livestock, and build up nutrients leading to algal blooms.
- Loss of groundcover makes the catchment very susceptible to wind and water erosion: water erosion can move a lot of silt, debris and organic material into the dam, making the water unattractive to livestock, and possibly leading to toxic algal growth.
- Silting of farm dams after fire and erosion can significantly reduce the dam's capacity to hold water.
- Infrastructure for managing water supplies (pumps, pipes and surrounding fences) can be damaged and prevent early recovery from fire.
Treating and preventing dam contamination after fire
Details for treating contaminated water and for preventing contamination are on the contaminated farm dams page.
Make simple, temporary silt traps
A simple fence of coarse shade cloth or straw can prevent most contamination entering water supplies after a fire.
In the longer term, make sure that all your dams have adequate silt traps.
Being prepared for fire
By planning and acting ahead of the fire season, many of the risks from fire can be reduced or avoided.
To protect water resources infrastructure, use steel fence posts, keep pumps and solar panels free of flammable material, and bury all reticulation pipes.
For more information see bushfire survival plans for landholders.