1. TEXAS SURFACE WATER QUALITY MONITORING INFORMATION SYSTEM
GIS IN WATER RESOURCES CE 394K.3
David Trujillo
November 21, 2006

2. MOTIVATION Need information for a water quality study for Lake Texoma.
Ideally you would look for data in a national database (EPA’s STORET)

3. STORET STATIONS STORET contains data from the following Stations
No Monitoring Stations in Texas?
November 2004 EPA

4. TCEQ SWQM STATIONS
Texas has a very complete network of monitoring stations

5. INTEGRATION
If databases were integrated:

6. EPA STORET
Repository of marine, freshwater and biological monitoring data
Developed in the 1960’s
Currently two systems: Legacy (1998) and Modernized
Users: Federal, State, Local, Tribes, Academia, Groups

7. EPA STORET
Updated once a month

8. TCEQ TRACS-SWQM Texas equivalent of STORET since 1967
8,300 monitoring stations
Government, River Authorities, Organizations, etc.
ASCII Files:

9. CURRENT STATUS Need to maintain a local STORET database
Legacy Data Format
STORET is very complex
STORET doesn’t conform the needs of the State
Different data standards
Cross

10. FUTURE INTEGRATION SWQMIS Replace outdated system Meet business needs
Provide efficient access to public
Analysis Tools
Enhanced Queries
EPA WQX
January 2007, September 2009
Internet Submittals
New front-end, tools
XML

11. WQX Doesn’t require states to run EPA software WQX Validate
Header (.xml)
Other
Response
Header Payload
Doesn’t require states to run EPA software

12. eXtensible Markup Language
Definition, transmission, and validation of data between systems
XML schema are the files that define data elements and structure
Example converting from ASCII to XML
L703568, ,00945,pH,5.5
<document>
<row>
<OrganizationIdentifier>L703568</OrganizationIdentifier >
<EventDate> </EventDate >
<EventEndTime>00945</EventEndTime >
<Parameter>pH</Parameter >
<Value>5.5</Value >
</row>
</document>

13. WQX XML Schema

14. FUTURE WORK Legacy Data Integration Abstraction Layer Appear Unified
CUAHSI- Large Amounts of Data
Database Migration
Open Database Connectivity (ODBC)
Convert Parameters (STORET 9000+)

15. FUTURE WORK Mapping Applications Example: Search Wizard
Developed by: Bora Beran, Drexel University

16. ACKNOWLEDGEMENTS Dr. David Maidment Bora Beran Nancy Ragland
Brandon Harris
Julie Lee
Dwane Young

17. Questions?