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Discussion Starter · #1 ·
Release to the river will decrease to 550 cfs tonight at 11pm to take advantage of the high flows from recent rains. Rain is in the forecast today and tomorrow, followed by a few dry days, with a forecast return of monsoonal moisture this weekend. We will re-evaluate the release daily as the forecast weather is actualized.

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BUREAU OF RECLAMATION
NAVAJO RESERVOIR RELEASES

SENT VIA FAX AND E-MAIL
August 4th, 2014


As a result of high river flows and forecast precipitation in the San Juan River Basin, the Bureau of Reclamation has scheduled a decrease in the release from Navajo Reservoir to 550 cubic feet per second (cfs) tonight, Monday, August 4th, beginning at 11:00 p.m. Releases are made for the authorized purposes of the Navajo Unit, and to attempt to maintain a target base flow through the endangered fish critical habitat reach of the San Juan River (Farmington to Lake Powell).

The San Juan River Basin Recovery Implementation Program recommends a target base flow of between 500 cfs and 1,000 cfs through the critical habitat area. The target base flow is calculated as the weekly average of gaged flows throughout the critical habitat area.

This scheduled release change is subject to changes in river flows and weather conditions. If you have any questions, please contact Susan Behery at 970-385-6560 or email at [email protected].
 

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Discussion Starter · #4 ·
We are increasing the release at Navajo tonight to 650 cfs. I will post the notice when it is finalized. I also did another small increase this past Saturday night at 11pm as well. We are watching the dropping flows, but it is a delicate balance between waiting for the forecasted rain to materialize, and not wasting water during a drought.

Even though Bluff is below 500 cfs, we are under no obligation to keep it above 500 cfs. We attempt to keep a 7-day average of the gages between Farmington and Lake Powell above 500 cfs (and it still is). So there is often a lot of variability between the gages.
 

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Discussion Starter · #5 ·
Release change has been finalized- increasing to 650 cfs tonight at 11pm.

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BUREAU OF RECLAMATION
NAVAJO RESERVOIR RELEASES

SENT VIA FAX AND E-MAIL
August 11th, 2014


As a result of decreasing river flows in the San Juan River Basin, the Bureau of Reclamation has scheduled an increase in the release from Navajo Reservoir to 650 cubic feet per second (cfs) tonight, Monday, August 11th, beginning at 11:00 p.m. Releases are made for the authorized purposes of the Navajo Unit, and to attempt to maintain a target base flow through the endangered fish critical habitat reach of the San Juan River (Farmington to Lake Powell).

The San Juan River Basin Recovery Implementation Program recommends a target base flow of between 500 cfs and 1,000 cfs through the critical habitat area. The target base flow is calculated as the weekly average of gaged flows throughout the critical habitat area.

This scheduled release change is subject to changes in river flows and weather conditions. If you have any questions, please contact Susan Behery at 970-385-6560 or email at [email protected].

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Susan Novak Behery, P.E.
Hydraulic Engineer
Reclamation
Western Colorado Area Office
Durango, CO
[email protected]
970-385-6560
 
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