From email from Reclamation (Erik Knight):
With the end of the irrigation season upon us, diversions to the Gunnison Tunnel have been shut down for the winter as of yesterday, October 30. Releases from Crystal Dam will be reduced to 300 cfs today, October 31, at 11 AM. This will leave 300 cfs in the Gunnison River through the Black Canyon for the winter months.
More Aspinall Unit coverage here.