In the Grand Canyon the Humpback Chub is endangered.  It is a fish that needs silty water to survive.

The rare and endangered Humpback Chub

At the same time the Glen Canyon Dam upstream is getting filled up with silt.

Navaho Bridge near Glenn Canyon Dam

Why not use giant hydraulic pumps to pull the silt out of the bottom of Lake Powell and let it flow down the Colorado river through the Grand Canyon. This would help to restore the canyons riverine environment and save the Humpback Chub.  At the same time it would help to keep Lake Powell a water source and a flood prevention mechanism.

The Grand Canyon is worth saving

This is the sort of idea that President Obama is looking for.  It is green, creates employment and will have a lasting positive effect on the infrastructure.

Next more giant water projects.