Hello sirs,
I am new to WEAP. I want to use WEAP to simulate how reservoir influence the inflow and outflow from upstream. I used SWAT model to simulate the streamflow as a input in the WEAP. Does this make sense?
And I don't understand the input of volumn-elevation relationship in WEAP because I have the water level-volumn data. What's the diffence between water level-volumn and volumn-elevation. How could I transfer the volumn-water levle data into volumn-elevation?
Thank you very much.

Lijuan and anyone else wondering-

Volume-elevation and water level-volume would be the same thing. Both the water level and the elevation define how the height of the water surface changes as the reservoir volume increases.

I am sure you have learned more by now, but yes, hydrology from other models such as SWAT can be brought into WEAP by reading in time-series CSV files using the ReadFromFile Wizard into the expressions in the river objects. More info on reservoir operation is found in the Reservoirs chapter in the WEAP Tutorial.

Apologies we did not get back to you originally.