The Dominy Formation

“Yes, Lake Powell will fill up first”

“When? Tell me when?” Dominy was now shouting.

“In a hundred to two hundred years,” Brower said quietly.

“That’s crap! The figures you work with aren’t reliable.”

“They come from reliable people.”

“Nonsense!”….

“Someday the reservoirs have to fill up, Floyd.”

“I wouldn’t admit that. I wouldn’t admit one inch!”

“Someday.”

Someday! Yes, in a geologic time, maybe. Lake Powell will fill up with silt. I don’t know how many thousands of years from now….”

Exchange between Floyd Dominy and David Brower in the pages of Encounters with the Archdruid, by John McPhee published in 1971

Dominy Formations in Waterhole Canyon_ Carlos Santana, University of Utah, Oct 2019

Dominy Formations in Waterhole Canyon_ Carlos Santana, University of Utah, Oct 2019

For years, as the reservoir was receding, the generic term “Lake Sediment” was used to describe the banks of silt and mud. The amount of sediment deposition has always been hard to wrap your head around.

Freddie Cistern Mud Canal 1-16-2003; Dohrenwend Weishiet

Freddie Cistern Mud Canal 1-16-2003; Dohrenwend Weishiet

Looking Upstream from the Farley Canyon Area 2-9-2005 Dohrenwend_Weishiet

Looking Upstream from the Farley Canyon Area 2-9-2005 Dohrenwend_Weishiet

Now, we use a different name that gives credit where credit is due:

The Floyd Dominy Formation