Cienega Creek, other S. AZ. streams, increasingly dry

Freelance biologist Dennis Caldwell hikes down Cienega Creek on his quest for lowland leopard frogs. As stream flows have slowed and stopped, some of the giant cottonwoods along the creek have toppled, like the one Caldwell is ducking under.

July 29, 2012 12:00 am  • 
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