Farm Water Calculator: Additional information
Potential Catchment Supply
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The algorithm to calculate the potential catchment supply:
- A = catchment area in Hectares
- R = average rainfall in mm
- Y = runoff coefficient %
- ((0.0212 x R) - 5.9464) x Soil profile factor x Location factor x Ground cover factor
- A x R x Y divided by 10000
Soil Factor
| Soil Profile Type |
Factor |
| Highly permeable |
0.3 |
| Permeable |
0.6 |
| Medium textured |
1.0 |
| Heavy textured |
1.3 |
Ground Cover Factor
| Soil Profile Type |
Factor |
| Annual pasture |
1.0 |
| Improved pasture |
0.5 |
| Timbered |
0.5 |
Location North/South of divide Factor
| Location |
Factor |
| North of the divide |
0.9 |
| Along the divide |
1.0 |
| South of the divide |
1.1 |