San Joaquin River Water Quality Modeling- A Beginning SJR-DO TMDL Technical Work Group Presentation Russ Brown- Jones & Stokes January 20, 2005.

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Presentation transcript:

San Joaquin River Water Quality Modeling- A Beginning SJR-DO TMDL Technical Work Group Presentation Russ Brown- Jones & Stokes January 20, 2005

San Joaquin River Data Atlas -modeling without data is folly  Initially Part of the DWSC and SJR WQ Modeling Contract with HydroQual (and Jones & Stokes)  Upstream Modeling Task will Update (2004+) and Expand (missing data sources)  Includes (20 years) of daily/grabs  Annual Master Excel Files  Comparison Files with Basic Annul Graphs and simple calculations

Data retrieval can be hard work –with some spinning of wheels

San Joaquin River Flows & EC -daily water and salt budgets

-let me see the data so that I can think about it!

- Check compliance with WQ objectives

San Joaquin River Algae & Nutrients- green and brown water

Suspended Solids and Turbidity -dead or alive?

Stockton DWSC DO- tracking the seasonal and diurnal variations

City of Stockton RWCF Loading

Initial Modeling of SJR Water Quality – its all about inputs

SJR Salt (EC) Budgets- Measured and Simulated

SJR Hydraulic Geometry- surface area, volume, depth, and travel time

SJR WQ Modeling- baby steps towards comprehensive adaptive management framework  Extend to tributary dams and Salt & Mud Sloughs and San Luis Drain  TSS & turbidity-seasonal inputs & settling  Temperature and light effects on algae  Diurnal growth and grazing of algae  Algae pigments, VSS, and BOD at Mossdale  Loss of algae from Mossdale to DWSC?  Old River diversion gates- DWSC flow and algae  DWSC DO management by oxygenation?