- Description
-
Definition:Mean annual deep drainage. This is the amount of water draining below the root zone.Interpretation:Significant deep drainage is confined to irrigation areas, and wet areas where rainfall exceeds potential evaporation at least for some months of the year: the southeast (including Tasmania), over the eastern ranges and in the north.Deep drainage has a broadly similar pattern to runoff, though with added variability through the influence of soil texture.Notes:A rule-based method is used to estimate the rate of deep drainage on the basis of soil texture, with modification to account for cultivation and irrigation.For this quantity, results are given for the “BASE” (pre-1788) and “AGRIC” (present day) conditions.The “AGRIC” case includes current agricultural inputs of water from irrigation.FWLeach.Agric – Mean annual deep drainage (mm y-1) in the “AGRIC” (present day) scenarioFWLeach.Base – Mean annual deep drainage (mm y-1) in the “BASE” (pre-1788) scenarioData is in geographics and GDA94.
See further metadata for more detail.
- Download
-
- ddab_r9cl__02411a01egageo___.zip (Other) 1.07MB - 104 hits
- ddab_r9cl__02411a01egfgeo___.zip (Other) 964.00KB - 96 hits
- Date Published
- 1 June 2000
- Date Updated
- 1 October 2010
- Update Frequency
- Not specified
Dataset Information
- data.gov.au Category
- Geography, Sciences
- Keywords / Tags
- geoscientific information, groundwater, maps.models, water, Water quality
- Licence
- Constraints
- Permalink
- http://data.gov.au/4582
Contributing Agency Information
- Agency
- Department of Agriculture Fisheries and Forestry (View all datasets from Department of Agriculture Fisheries and Forestry)
- Jurisdiction
- Commonwealth of Australia
- Agency Program
- Australian Bureau of Agricultural and Resource Economics and Sciences
Dataset Coverage
- Temporal Coverage
- 30 August 2001
- Geospatial Coverage
- Australia
- Granularity
- Not specified
