1. Web-Based GIS for Sediment TMDL Implementation in the Imperial Valley, California University of Redlands The Redlands Institute Serene Ong Nate Strout

2. Presentation Overview Project Objectives and Process Review Preliminary GIS Database Review prototype web-based tools

3. Los Angeles San Diego Tijuana Mexico U.S. Pacific Ocean Gulf of California Palm Springs Arizona California Colorado River Salton Sea Calexico Mexicali Imperial Valley – Geographic Context

4. Groundwater 4% Urban runoff Agricultural runoff Rainfall 3% Whitewater River 7% Other inflow 1% Alamo River 45% New River 32% Agricultural Drains 8% Watershed Assessment 6,257 fields 1,406 miles of drainage channels 175 drain discharge points 100 miles of river 500 square miles of surface area of the Salton Sea (326,000 acres) No outlet from the Salton Sea State implemented TMDL for TSS of 200 mg/L in 2001/02

5. State Water Resources Control Board (SWRCB) Regional Water Quality Control Board (RWQCB) Imperial Irrigation District (IID) Imperial County Farm Bureau (ICFB) Communities and wildlife around Imperial Valley and Salton Sea Stakeholders

6. Anticipated Outcomes More efficient use of existing information Increased use of monitoring and related data for TMDL management/research Standard methods for collecting, formatting and reporting water quality related data Project Objectives Support SWRCB, RWQCB, IID and ICFB with sediment TMDL implementation and compliance. Provide better access to water quality and farm practices data. Develop GIS database and web map application, custom query and report tools

7. Database Design Objectives Incorporate data from various agencies Comply with the State Water Resources Control Board (SWRCB) Surface Water Ambient Monitoring Program (SWAMP) standards Support analysis and reporting requirements

8. Database Development Process Stakeholder Survey Bureau of Reclamation Department of Pesticide Regulation California Department of Water Resources State Water Resources Control Board Imperial County Agricultural Commission Imperial County Farm Bureau Imperial Irrigation District International Boundary and Waters Commission Regional Water Quality Control Boards (3, 5, 7) Salton Sea Authority University of California Davis Cooperative Extension Bureau of Reclamation Department of Pesticide Regulation California Department of Water Resources State Water Resources Control Board Imperial County Agricultural Commission Imperial County Farm Bureau Imperial Irrigation District International Boundary and Waters Commission Regional Water Quality Control Boards (3, 5, 7) Salton Sea Authority University of California Davis Cooperative Extension

9. Database Development Process – Data Sources Stakeholder Survey Data Inventory and Assessment Over 300 Unique Datasets Identified

10. Database Development Process Stakeholder Survey Data Inventory and Assessment Data Compilation/ Conversion Sample MethodTypeSubtypeConstituent/ParameterField NameUnits Sample FrequencyLocationStart DateEnd DateYearsRecordsFeatures Water extractHydrologicFlow Value_cubic feet/sec1943200462566064 Water extractHydrologicWater Flow Alamo at Inatl Boundary in cubic m/scubic m/sDailyBorder1947200357205761 Water extractHydrologicWater Flow New at Inatl Boundary in cubic m/scubic m/sDailyBorder1947200357205761 Water extractHydrologicFlowDischarged Salton Sea1994200512428138 Water extractHydrologicFlowFlow (Monthly sum)Monthly_Flcubic feet/secSalton Sea1994200512428138 Water extractPhysical/ChemicalOtherAccute ToxicityAccute_ToxVariesSalton Sea19452000551222 Water extractPhysical/ChemicalGeneralAlkalinity VariesSalton Sea19452000551222 Water extractPhysical/ChemicalNutrientsAmmonia VariesSalton Sea19452000551222 Water extractOrganismsBacterialAntero-cocciAntero_CocVariesSalton Sea19452000551222 Water extractOrganismsOtherOther BiologyBio_OtherVariesSalton Sea19452000551222 Water extractPhysical/ChemicalOtherBiochemical Oxygen DemandBODVariesSalton Sea19452000551222 Bot_SedVariesSalton Sea19452000551222 Water extractPesticidesCarbamates VariesSalton Sea19452000551222 Water extractPesticidesChlorinated HerbicidesChlor_HerbVariesSalton Sea19452000551222 Water extractPhysical/ChemicalOtherChronic ToxicityChronic_TOVariesSalton Sea19452000551222 Water extractPhysical/ChemicalGeneralWater colorColorVariesSalton Sea19452000551222 Water extractPhysical/ChemicalOther Dissolved Carbon Dis_CarbonVariesSalton Sea19452000551222 Water quality data index Fixing errors in spatial data Coding flow direction Reformatting data for GIS Creating basic metadata

11. Database Development Process Stakeholder Survey Data Inventory and Assessment Data Compilation/ Conversion Database Design/ Development Conceptual Database Schema

12. Obtain the data Obtain the data Process the data Process the data – Code flow direction, map field names and data types to SWAMP standard fields and data types Crosswalk data from various tables Crosswalk data from various tables Include all required SWAMP tables and fields Include all required SWAMP tables and fields Create links and relationships among tables Create links and relationships among tables Making a Database Compliant

13. Schema diagram Water Quality Analysis Hydrology Network Features Agricultural Practices Cadastral - Owner - Operator

14. Database Development Process Stakeholder Survey Data Inventory and Assessment Data Compilation/ Conversion Database Design/ Development Analysis and Visualization Products Load Duration Curves Time Series Animations TSS and Turbidity Trends GIS Database Poster Statistical analysis of BMP-TSS relationships

15. GIS Database Orientation

16. Hydrology Features Schema based on NHD Compilation of Imperial Irrigation District (IID) and NHD linework Rivers Canals Drains Flow Direction

17. Agricultural Features Gates – – Inflow point Tailwater Boxes – – Runoff point to drain Plot delineation – – Land fed by a single gate

18. Monitoring Stations Location Sources: – – RWQCB:Region 7 – – SWAMP – – Imperial Irrigation District (IID) – – USGS (flow)

19. Drainsheds Collection of plots monitored by a single RWQCB water quality monitoring station

20. Agricultural Practice Information Reported by farmers to Imperial County Farm Bureau under the ICFB Voluntary TMDL Compliance Program – – Owner & operator information – – Best Management Practices (BMPs) – – Crop types – – NPS problems – – Site conditions For more information on the TMDL Compliance Program please visit http://www.ivtmdl.com/http://www.ivtmdl.com/

21. Demo of Web-based GIS and reporting tools Technical Details: Application developed using ArcGIS Server.NET Web ADF 9.2 Data stored in ArcSDE 9.2 on SQL Server 2005 *This is a Beta application http://www.institute.redlands.edu/ivsdi

22. Next Steps Web-GIS deployment/ testing Policies for data sharing/ reporting and security Outreach/ training materials Web-based GIS and TMDL analysis tools Feedback and refinement of draft GIS Process for data update and maintenance Document future data and analysis needs Training and hand-over to long-term steward

23. Thank you http://www.institute.redlands.edu/ivsdi Serene Ongserene_ong@redlands.edu Nathan Stroutnathan_strout@redlands.edu