Release Level	5.2
Release Date	2007 01
Revision Level	1.0

In addition to a number of bug fixes (please consult the on-line   PROBLEM REPORTING SYSTEM
for an overview) the following new features are available in R5.2:

1. River Basin Objects (RBO): data base (hypermedia structure) of georeferenced RBOs such as catchments, reservoirs, settlement, or irrigation schemes, that can be linked to WRM (and STREAM) model NODES
2. Water Economics: embedded economic evaluation of supply, demand, and compliance related criteria, investment and ORM costs, production benefits for cost/benefit analysis and mult-criteria assessment and data export with global, sectoral and node specific summaries;
3. Consistency checking: extended scenario checker to guarantee completeness, consistency and plausibility of WRM model scenarios; includes a summary analysis of all user defined node specific parameters, grouped by node class;
4. Water Technologies: a data base of technologies and policies used as instruments in the optimization (demand and loss reduction, increased supply and efficiencies, alternative structures);
5. Multi-Criteria Optimization version of the basic WRM model, using a satisficing apporach to generate large sets of feasible alternative solutions for discrete multi-criteria post-processing;
6. Discrete multi-criteria DSS post-processor, reference point approach;
7. Paddy production has been fully implemented in the Irrigation water demand model.
8. Embedded GIS: A new and extended Map Server with map composition, GIS data import, and a Map Catalog has been implemented, supporting arbitrary zooming and background map selection for the River Basin Objects (RBO).

   Release R5.1. features, improved:

9. A new improved network display indicating the node coordinates: The name of the node is drawn in a small box if the mouse is moved on top of a Node symbol in the river graph.
10. Graphical node positioning and reach definition: A user can now set the position in grid coordinates of a node through a graphical interface. While viewing the specific settings of an individual node the EDIT-button above the image of the river network become active and opens a popup window viewing a larger version of the graph. A circle around the node marks the current node position. The new position of that node can be set by moving the red dot ontop of the graph to the new position of taht node and pressing the SAVE button.

11. REACH Editor: In the "add reach" - function a graphical component has been added now as well. In addition to the selection of head and tail nodes through it's name, it is possible to select them by clicking on a node in the graphical representation of the river network. A red circle is drawn around the selected had node, a green circle marks the selected tail node. Pressing save will make the selection permanent and draw the reach.

12. SPILL scenarios are re-implemented independently of WRM scenarios;

13. RRM re-implementation: the rainfall-runoff model has been re-implemented to use Descriptors and the Java based editor for its parameter editing. This provide a built-in explanation for every parameter, as well as optional default valuess and a symbolic definition as well as allowable ranges to simplify editing a scenario.

    As an ASP companion product, the automatic calibration system RRMCAL can now import RRM scenarios for calibration, and export RRM scenarios for further analysis with the RRM system.