What’s Cuing Salmon Migration Patterns?

The spring-fed water that flows through Hansen Creek in southwestern Alaska is almost always clear. Its rate and temperature stay relatively constant throughout the year. Each summer, sockeye salmon migrate through the shallow, narrow creek bed in distinct pulses, in...

Riverbanks Collapse after Oroville Dam Spillway Shut Off

When state water officials scaled back their mass dumping of water from the damaged Oroville Dam this week, they knew the riverbed below would dry up enough to allow the removal of vast piles of debris from the fractured main spillway. But they apparently did not...