From the Cortez Journal:
Jackson Gulch reservoir live content stood at 8,594 acre-feet with a 9,977 acre-feet maximum capacity and a 7,306 acre-feet average (1971-2000) end-of-month content. At Jackson Gulch, a daily maximum/minimum of 61/49 cubic-feet-per-second was released into the Mancos River, and 22 acre feet were released for municipal purposes.
McPhee Reservoir live content stood at 349,845 acre-feet, with a 381,051 acre-feet maximum capacity and a 335,208 average (1986-2000) end-of-month content. At McPhee, 4,612 acre-feet were released into the Dolores River, and 47,372 acre-feet were released for transbasin purposes. At McPhee, a daily maximum/minimum of 82/74 cubic-feet-per-second was released into the Dolores River.
More San Juan River basin coverage here.