New raster formats are supported as background layers. The new formats are GeoTIFF files and ESRI binary grids.
Digital Elevation Models were previously loaded as a separate layer, which was always shown on top of the other background layers on the map. The DEM is now selected amongst the raster files loaded as background layers. This allows full control on the order of layers, including the DEM file.
A new 'Reservoir outlet' feature allows the user to explicitly include controlled and uncontrolled outlets, as well as hydraulic constraints in the outflows. It is possible to model multiple outlets, including spillways, bottom outlets, and diversion to water users. The simulation computes the outflows for each of the outlets of the reservoirs, and one extra result item exists for each outlet in a reservoir.
Sensors can now be used to encapsulate simulation variables into a list of variables that can be used to build output variables. A sensor can monitor a simulated water level, the net flow to a node, a water user extraction, the hydropower generation, etc. In general, these are most of the items that already exist in the result files. The advantage is that these sensors can be used to create new customized (user-defined) variables.
User-defined variables allow to create explicit result output of user-defined quantities, as mathematical expressions involving the list of sensors, and optionally an external time series. These variables are outputed in the result list, and in the dfs0 result file. For example, a variable can be used to track the difference in water level from two reservoirs, where each water level is described / monitored with a sensor: the resulting variable (water level difference) can be saved in the results.