1. Upstream Boundary (Section V.1)

2. 1. Delta boundary, daily inflow 2. Extend upstream channel by 45 miles, daily inflow 3. Hourly inflow at Freeport boundary Walnut Grove Sacramento Rio Vista

4. Figure V.1-2. Simulated flow in Sacramento River at Freeport.

5. Figure V.1-5. Simulated combined flow into Delta Cross Channel and Georgiana Slough. Positive flow is away from Sacramento River.

6. Observations – Upstream Boundary Current formulation may have significant stage error at Walnut Grove A 45 mile extension matches flow at Freeport reasonably well, even if only daily inflow is used