From the Sonoran Institute (click through for photos of the pulse flow):
After eight weeks of water surging across the US – Mexico border, the historic connection between the Colorado River and the Upper Gulf of California officially occurred on Thursday May 15, 2014. This is the first time the river has connected with the sea in at least 15 years. This has not regularly occurred for more than a half-century!
The photos below document the historic connection. Please note that all photos are copyrighted by the Sonoran Institute, with aerial support from our partner LightHawk. If you are interested in using the photos, please contact the Sonoran Institute.