Brad, for Powell, you can get the inflow forecast from the CBRFC:
(Feb 1 should be out in the next day or so.)
The Bureau publishes a TeaCup Diagram here:
The Bureau will not state anticipated level changes in Lake Powell until much closer to the runoff period. Also, keep in mind that these forecasts are made with the assumption of average conditions continuing through the rest of the snowmelt accumulation period. Rather than focusing on published numbers the value is on the catagory in which the rivers fall. Finally, forecasting the regulated inflow to Lake Powell is difficult based on the complex water uses, alotments, diversion ect within the entire Upper Colorado Basin.
With all of the said -- the Yampa and upper green look great this year. Keep your finger's crossed and the snowdances going.