FYI we increased Navajo's release this morning, in hopes of diluting the water as it hits the San Juan and pushing the plume downstream faster. It's a coordinated effort between Reclamation and the SJRIP (FWS). The release will go up to 1300 by 11am today, and will remain at this level at least through the weekend. There were many factors that went into making this rapid response decision, at this level and at this timing. I pasted the press release below.
Susan Novak Behery, P.E.
Western Colorado Area Office
BUREAU OF RECLAMATION
NAVAJO RESERVOIR RELEASES
SENT VIA FAX AND E-MAIL
August 6, 2015
As a result of a recent mine waste accident occurring high in the Animas River Basin, the Bureau of Reclamation has scheduled an increase in the release from Navajo Reservoir from 650 to 1,300 cubic feet per second (cfs) on Friday, August 7, beginning at 7:00 a.m. as requested by the San Juan River Basin Recovery Implementation Program. This release will occur in 2-hour increments, reaching 1,300 cfs by 11:00 am. This release will be ramped back down to 650 cfs on Monday, August 10th, beginning at 7:00 a.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 firstname.lastname@example.org