WSP11103

• File Number: 8240.300.10
• Description: San Juan Recovery Implementation Program
• Basin: San Juan/Dolores
• Date: 2/1/1995
• Author: SJRIP
• Title: San Juan River Basin Recovery Implementation Program - Program Document
• Water Supply Pro - Doc Type: Publication

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

16

diversion structure is located just downstream of Fruitland. The
entire river passes over this structure, except at abnormally
high flows, when a portion of the river flows around the weir and
may allow upstream movement of fish. The Four Corners Power
Plant pump station, with its associated weir, is located 3 miles
downstream of the concrete weir at Fruitland. The Hogback
diversion dam is the next major structure across the river. It
was passable by fish until September 1987, when it was
reconstructed and all flow was diverted into the Hogback Canal at
low flow with excess water released back to the river a short
distance downstream. The furthest downstream diversion, at
Cudei, is the only one below Shiprock. There are no major
diversion structures that would impede fish passage on the
mainstem San Juan River downstream of Cudei.

These diversions, as well as other diversions from the San Juan
River and its tributaries in New Mexico, Colorado and Utah with
the associated return flows, result in a net depletion of the San
Juan River flow of up to 657,200 acre feet annually. The net
depletion at Bluff, Utah, is reduced to 632,200 acre feet by
return flow from projects that divert water from the Dolores
River, but return water to the San Juan River. These baseline
depletions and return flows are shown in Table 2.3.