introduction
The NGMS is a scenario analysis tool to assess the impacts of abstractions on the groundwater resources and the surface water flows.
The system contains a set of default scenarios which allow the user to understand the interaction relations between the various components in the system.
To analyse a change in artifical influences (i.e. human interventions), what-if scenarios can be conducted by modifying the input of the default runs. Modifications that are supported so far are changes in abstraction rates or teh addition or removal of abstractions.
Based on the scenario definition, the NGMS executes a sequence of data processing steps to preprocess the input to the groundwater model, to run the model and to postprocess the data. The output can be presented in time series graphs, accretion profiles or spatial plots. The system automatically conducts a data comparison between different runs.
Scenario types
The following scenario types are distinguished:
Workflows
Data processing steps
The typical composition of a workflow is:
- run Modflow
- derived tributary inflows
- interpolate regular grids to points, sparse grids and longitudinal profiles
- compare runs
