1. DSM2, Version 7 CWEMF February 26, 2007 Eli Ateljevich, PhD Department of Water Resources Delta Modeling Section

2. Talk Outline Information management Input changes and GUI New model features Status

3. Database Information Management Goals Consistency Version control Scenario management Extensibility and reuse of common items Transparency NOT an archive of runs

4. Layer Based Input 1 2 3 4 5 6 2 ( revised ) 7 (added) Grid layer 1 Grid layer 2

5. IO System and GUI Graphical user interface (GUI) front end for database Timed IO stored in DSS, assigned in GUI Some run-specific items can be input in text PTM is text based HDF5 is used for the “tidefile”

6. DSM2 Input GUI

7. New Model Features Gates with multiple, more physical structures User-written operating rules More reliable solvers Readable tidefile using HDF5 CONDOR-friendly for batch simulations Old/inconsistent features deprecated

8. Gates With Multiple Structures

9. Physical Gate Positions elev height elev Variable weir crest Radial/sluice

10. Operating Rules observation decision

11. Example – Operate a Gate Based on Water Levels Time Upper Stage Trigger Lower Stage Trigger Close Gate Open Gate Stage (ft)

12. DSM2 Database Interface

13. HDF5 Tidefile Robust – designed for NASA satellite data Tools – both DWR and open source More useful data and better structure coming soon: –QUAL –Stage (as opposed to flow area)

14. Numerical Reliability: DB vs Text Better closure in HYDRO –Maxiter nearly eliminated –Closure based on solution, not slowdown –Continuity ensured Small fixes in QUAL nonconservative, conservative same PTM velocities time-centered

15. Do They Give The Same Answer? Solutions in identical cases same Some production items have been “translated”: –Geometry: DB has one kind of cross-section –Gates: make use of the new features Testing includes isolated calculations (e.g. gate equations) and production runs Time centering in PTM big improvement for some situations

16. Project Status Production DSM2 runs from desktop (Access) and Informix database in progress Delta Modeling Section conversion mandated within a month –2-day training course and tutorials completed by all External use within 6 months

17. Contact Eli Ateljevich eli@water.ca.gov Ralph Finch, Tawnly Pranger, Edward Diamond, Jon Shu, Jeff Galef Acknowledgments