AquiferSim is a regional-scale model of nitrate transport in groundwater and is part of the research programme ‘Integrated Research for Aquifer Protection (IRAP)’. IRAP members are: Lincoln Ventures Ltd, Landcare Research, Environment Canterbury, Plant & Food, AgResearch, Dexcel, ESR and Aqualinc). The model predicts the long-term effects of agricultural land use on groundwater quality in the underlying aquifers and groundwater discharge to surface waters. The aim is to help inform decisions about the future of land-use and water resource planning at a national level. AquiferSim works in tandem with another model under development by Lincoln Ventures, called FarmSim, which predicts the effect on the groundwater as a whole. The root-zone nitrate concentration and recharge information can also be supplied by other models like Overseer or SPASMO.
A groundwater nitrogen transport model that intends to assist answer two main questions: 1) What is the long-term effect of land-use change (such as a conversion from sheep to dairy) on groundwater in various parts of a system? 2) How long will it take to achieve this long-term effect?
|State of Development||Unknown|
|Current Development Activity||None|
|Management Domains||Land, Freshwater|
|Subdomains||Contaminant Losses, Crop/Farm Systems|
|Intended End Users||
|Spatial Resolutions||10-100m, 100-500m, 500-1000m|
|Spatial Extents||Local (i.e. Catchment or District)|
|Steady State or Dynamic||Steady State|
|Level of Integration||Environmental|
|Input Data Formats||XLS(X), GIS compatible files|
|Output Data Formats||GIS Compatible Files|
|Open/Closed Source||Open Source|
|Operating Systems||MS Windows|
|User Interface||Graphical desktop|
|Ease of Use||Moderate GIS expertise is required for preparing the data layers including those generated by other models. AquiferSim has several idiosyncrasies that the analyst must be aware of, that are described in the user documentation. Groundwater modelling expertise is also required to ensure sensible definition of hydraulic boundary condition and interpretation of results.|
|Use in Policy Process||Plan (Policy Formulation), Review (Issue Identification)|
Lincoln Ventures, Landcare Research, 2011. AquiferSim User Documentation. IRAP Integrated Research for Aquifer Protection.
|Programming Language||AquiferSim is a .NET2 console application (written in Visual C#) that can run as a plug-in tool in ESRI ArcView Desktop 10.0 (or ArcInfo) and Spatial Analyst.|
|Analytical Techniques||Input/output, GIS|
|Keywords||Nitrate, groundwater, land use|
http://www.irap.org.nz/publications.php - see Bidwell and Good, 2007. "Development of the AquiferSim model of cumulative effect on groundwater of nitrate discharge from heterogenous land use over large regions. Conference paper: