From email from Reclamation (Kara Lamb):
Today, April 1, 2013, we have officially started to fill Green Mountain Reservoir. Last year, the start of fill was declared about one week earlier than this year.
Currently, we are releasing around 55 cfs to the Lower Blue River. The reservoir water level elevation is about 7891 feet–roughly 50 feet down from completely full, or 39% of its total content capacity. The water level should now steadily begin to rise.
To track Green Mountain water levels and releases, please visit our website. It is updated every night at midnight.