Occasionally, the Bureau will inform the NWS river forecast center of their operation plan. When this happens, expeceted releases from crystal are put into the model and the gunnison tunnel flows are subtracted. You can view this forecasted hydrograph here:
or you can call a hydrologist at 801-524-5130 who might have a better idea. (some are more helpful than others.)
One can also call the BOR operations at (970) 248-0660 and inquire about expected releases from crystal (just keep in mind that the tunnel can pull a substantial amount of water before the canyon).
Western Power is operating the aspenall unit in close conjunction with the other reservoirs (specifically Flaming Gorge) to minimize the amount of power they need to purchase on the market. This further confuses the situation.