AN UPPER BASIN PERSPECTIVE. The Colorado River Basin Study of 2012 Don Ostler – Upper Colorado River Commission. Upper Basin Conditions. 1922 Compact promises UB 7.5 maf of use UB uses have reached 4.8 maf Current estimated safe yield for UB is only about 6 maf
The Colorado River Basin Study of 2012
Don Ostler – Upper Colorado River Commission
-The LB and UB greatly benefit from the above decisions
-The LB currently does not count uses in the above manner
Occur regularly due to variation in annual precipitation and lack of storage.
Have occurred each year since 2002.
Have ranged from at least 630,000 acre-feet to small shortages since 2002.
Average annual shortage in the Upper Division has been approximately 380,000 acre-feet since 2002.