Working on a “water year in review” column for tomorrow’s newspaper (Tues. 10/9/12), I ginned up this graph of annual Rio Grande native flow at Otowi (data courtesy the amazingly helpful folks at the New Mexico Interstate Stream Commission):
I find the recent decade striking. Every year but two since the late 1990s has been below the long term mean. Note that this is not unique in the 70-plus year record, however, with similar severe, sustained drought in the 1950s.
More in tomorrow’s newspaper.