1. Applying WARMF to the SJR Replaces DSM2 from Bear Creek to Mossdale Replaces DSM2 from Bear Creek to Mossdale Offers expanded model domain, including tributaries and land area Offers expanded model domain, including tributaries and land area Links seamlessly to Link-Node Model in Deep Water Ship Channel* Links seamlessly to Link-Node Model in Deep Water Ship Channel* Simulates key parameters responsible for low dissolved oxygen in DWSC: nutrients, organic matter, sediment, algae Simulates key parameters responsible for low dissolved oxygen in DWSC: nutrients, organic matter, sediment, algae

2. WARMF Inputs Upstream San Joaquin River Upstream San Joaquin River Stanislaus, Tuolumne, Merced Rivers Stanislaus, Tuolumne, Merced Rivers Salt Slough, Mud Slough, Orestimba Creek Salt Slough, Mud Slough, Orestimba Creek Known return flows, Modesto WQCF Known return flows, Modesto WQCF

3. Boundary Conditions Data Boundary Flow Input Water Quality Input Stanislaus River at SJR at Ripon at Caswell S.P. at Goodwin Dam at Ripon Tuolumne River at SJR at Modesto at Shiloh Road below LaGrange Dam Merced River at SJR near Stevinson near Stevinson near Newman San Joaquin at Bear Ck near Stevinson Salt Slough at Highway 165 Mud Slough near Gustine Orestimba Creek near Crows Landing

4. Return Flow Data – East Side TID Lower Stevinson Spill monthly estimates TID Harding Drain 2005: daily data; monthly estimates TID Lateral 6 & 7 Spill 2005: daily data; monthly estimates TID Lateral 5 Drain monthly estimates TID Lateral 3 Drain monthly estimates TID Lateral 2 Drain 2005: daily data; monthly estimates MID Main Drain 2005: daily data; monthly estimates MID Lateral 6 Spill 2005: daily data; monthly estimates MID Lateral 5 Spill 2005: daily data; monthly estimates MID Lateral 4 Spill 2005: daily data; monthly estimates

5. Return Flow Data – West Side Spanish Land Grant Drain 2005: daily data; monthly estimates Moran Drain 2005: daily data; monthly estimates Marshall Road Drain 2005: daily data; monthly estimates Westley Wasteway 2005: daily data; monthly estimates EC data available in 2005; monthly EC estimated Major cations and anions (other than nutrients) adjusted to match EC.

6. Model Domain

7. Point Sources

8. Example Input Data

9. Gaging Stations

10. Water Quality Stations

11. Flow Output – SJR @ Stevinson

12. Flow Output – SJR @ Newman

13. Flow Output – SJR @ Crows Ldg

14. Flow Output – SJR @ Patterson

15. Flow Output – SJR @ Vernalis

16. Unaccounted Water Gain (2003)

17. EC Output – SJR @ Crows Ldg

18. EC Output – SJR @ Patterson

19. EC Output – SJR @ Mossdale

20. TSS Output – SJR @ Patterson

21. TSS Output – SJR @ Maze Rd

22. TSS Output – SJR @ Vernalis

23. TSS Output – SJR @ Mossdale

24. Sources of Sediment

25. Algae Output – SJR @ Patterson

26. Algae Output – SJR @ Maze Rd

27. Algae Output – SJR @ Vernalis

28. Algae Output – SJR @ Mossdale

29. Calibration of other parameters Temperature: No systematic errors Temperature: No systematic errors Nitrogen: Simulated NH4-N too low from Patterson to Mossdale; NO3-N too high; TN is OK Nitrogen: Simulated NH4-N too low from Patterson to Mossdale; NO3-N too high; TN is OK Phosphorus: Simulated PO4-P, TP too low from Patterson to Mossdale Phosphorus: Simulated PO4-P, TP too low from Patterson to Mossdale

30. Next Steps Accounting for flow & TDS imbalance Accounting for flow & TDS imbalance –Investigate groundwater & drain assumptions Modify calibration and/or algorithms to match observed algae data Modify calibration and/or algorithms to match observed algae data Expand simulation of tributaries and/or land area Expand simulation of tributaries and/or land area