It’s difficult to fathom how the Colorado River could possibly carve the mile-deep chasm that is the Grand Canyon. But if one thinks of the river as a flume of liquid sandpaper rubbing the land over ...

When the San Juan River flows out of the San Juan Mountains in Southwestern Colorado, it contributes 15% of Lake Powell’s water. But there’s a problem: The river carries a hefty 55% of the sediment ...

Sediment buildup has reduced the water storage capacity of Tuttle Creek Lake by about half since its completion in 1962. The U.S. Army Corps of Engineers is testing a new water injection dredging ...

Picture three-and-a-half football fields with earth piled onto them — piled as tall as the Empire State Building. That’s how much sediment flows into Tuttle Creek Lake each year. After decades of this ...

That's how much sediment flows into Tuttle Creek Lake each year. After decades of this, mud has eaten up so much space that about half of the lake near Manhattan has disappeared. Put another way, ...