A few days ago my son & I just saw the 70mm Grand Canyon movie at OMSI, which gave me a fresh and jarring reminder that I can’t get out of my head:the Colorado River no longer reaches the sea! At least not directly, via the low channel in the earth she once traveled. After 8 dams, several giant reservoirs evaporating into the desert sky, Las Vegas, the CAP, the thousands of acres of Imperial/Coachella valley golf courses, L.A., etc., she’s rerouted through sewers, turf, sky, etc.
Along with the stunningly beautiful parts, the movie showed the (once) riverside shacks that housed Mexican fishing families with a dusty dry bed out front–no fish. And bridges with great wide spans but no water running underneath.
It also disturbed me to hear that the water from the bottom of Lake Powell that flows through the Glen Canyon Dam into the Grand Canyon comes out twenty degrees cooler than when it flowed as a river. Leaving all the sediment behind.
Then at the end of the movie, after the voice-over of someone speaking as the voice of water (I am the clouds, the oceans. . .) they gave the “green bits”: if we just use low flow showerheads, water our lawns less, use the off switch on the hose while we soap up our cars. . .