The San Joaquin River is seen in this aerial view, March 15, 2006. 

(Rick E. Martin/San Jose Mercury News/KRT)
The San Joaquin River is seen in this aerial view, March 15, 2006. (Rick E. Martin/San Jose Mercury News/KRT) Rick E. Martin / San Jose Mercury News /MCT
The San Joaquin River is seen in this aerial view, March 15, 2006. (Rick E. Martin/San Jose Mercury News/KRT) Rick E. Martin / San Jose Mercury News /MCT