The PNW River Forecast Center has been steadily revising its stream flow forecast for the Columbia River at the Dalles Dam this week. And the runoff season forecast (APR-SEP) now stands at 103% of normal. Last year actual for the same period was 100% of normal.
Here is the history of the APR-SEP 2014 forecast, with 10% and 90% intervals. This should go a long way toward calming the fears over power shortages and excess natural gas demand this summer, after the stream flow forecast hit a low on January 31st.
The forecast is in Million Acre Feet: