1. ArcGIS Interface to the WRAP Model
Center for Research in Water Resources
Texas Commission on Environmental Quality
Clark Siler
05 Dec 2006
Introduction slide.
Title is: “ArcGIS Interface to the WRAP Model”
Lists organizations involved in the research; CRWR is conducting, TCEQ is providing.
CE 394K.3 – GIS in Water Resources
University of Texas at Austin

2. Water Rights Analysis Package (WRAP)
Created by Dr. Ralph Wurbs of the Texas Water Resources Institute at Texas A&M
Used by TCEQ with WAM system
Digital management of water rights
Replaces manual map tracing method
WRAP Display tool shows results in GIS
Problems with current WRAP version
WRAP is a computer program that digitally manages water rights. This replaces the older method of tracing lines on maps to determine various relationships and properties of water rights. To show the results of the WRAP program’s output files in ArcGIS, the WRAP Display tool was created. This program was used by the TCEQ for many purposes until changes associated with the most current version of WRAP introduced inconsistent results. Namely, the spacing and distribution of information in the output file changed enough such that the WRAP Display tool could not “find” the correct information.
“The Texas Commission on Environmental Quality (TCEQ) uses WRAP in its Texas Wate r Availability Modeling (WAM) system to evaluate and approve surface water right permits in Texas.“ &

3. WRAP Display Tool Demonstration
Test site: Big Cypress Creek Watershed
near Mount Pleasant, TX
This water shed is near Mount Pleasant, TX, and the output seems to be near Shreveport, LA

4. WRAP Display Tool Demonstration
Test site: Big Cypress Creek Watershed
near Mount Pleasant, TX
Transition to watershed area.

5. WRAP Display Tool Demonstration
Percent of Storage (July 1996, new WRAP version)
Reservoirs
Control Points and Reservoirs
Control Points
Percent of Storage (July 1996, old WRAP version)
WRAP Display Tool Demonstration
Progression of WRAP Display results for percent of storage (variable displayed).
Location and description of control points (label)
Location and description of reservoir points
Display both to see relationships
WRAP GUI progression to select Percent of Storage as display variable
Display results for July 1996 using old wrap output
Display results for July 1996 using new wrap output

6. Addressing Inconsistencies
Inspect GIS attributes
Examine GIS attributes to show where variable values (colors) come from.
Compare older (left) WRAP with newer (right)
Old
New

7. Addressing Inconsistencies
Examine data origins (WRAP output file)
Examination of the WRAP output files, upon which the WRAP Display tool is based, reveals that the data spacing is inconsistent between versions. These are highlighted (in Orange) and new classifications are shown (in blue).
The fifth line of code tells: starting year, number of years, number of control points, number of water rights, number of reservoirs (in output file).
This is looking within the “black box” of the tool.

8. Preliminary Rectification
Percent of Storage (July 1996, old WRAP version)
Percent of Storage (July 1996, new WRAP version adjusted)
Preliminary Rectification
Results after changing program code
No change = Success!

9. Preliminary Rectification
Inspect GIS attributes
The results are very similar and the few differences are small and likely due to the increased accuracy of the new version.

10. Looking Forward Preprocessing may be automated
Time series graphs can be improved
Programming platform will be upgraded
Graphical user interface (GUI) will be enhanced
Elevation-Area-Capacity curves for small reservoirs will be explored
The incompatibility introduced with the WRAP output changes provides an excellent opportunity to overhaul an useful tool for TCEQ. Improvements may include:
Automation of preprocessing procedures that are currently performed manually
Improving time series graphs using existing ArcGIS’ graphing capabilities to show units and discrete steps..
Upgrading the programming platform to utilize .NET capabilities. This will likely overcome existing problems related to large WRAP output file sizes.
Enhancement of the GUI to include additional parameter display options, a more user-friendly design, and a more comfortable look and feel.
Exploring options related to elevation-area-capacity curves for small reservoirs.
CE 394K.3 – GIS in Water Resources
University of Texas at Austin

11. Conclusion WRAP changes affect the Display tool Code can be modified
Subsequent results are the same
Additional features can be added
Changes to one program affect others
Tools’ code can be adjusted
Programming is a dynamic process
CE 394K.3 – GIS in Water Resources
University of Texas at Austin
CE 394K.3 – GIS in Water Resources
University of Texas at Austin

13. Supplemental Information

14. Time Series Graphs -Can be improved
Time series graphs from existing WRAP tool. These will likely be changed to utilize ArcGIS’ graphing capabilities to better present the data. Notice that the axes do not have appropriate unit labels. This is one way that these graphs can be improved.

15. This is a flowchart of the WRAP Display tools’ processes.

16. Personal Information
Clark Siler Graduate Student University of Texas at Austin Geospatial Hydrology Water Resources CRWR BS – Brigham Young University Civil Engineering
Nov 2006