[env-trinity] Fwd: Change Order - Lewiston Dam

[Huntt DeCarlo, Caryn]

---------- Forwarded message ----------
From: Thomas Patton <tpatton at usbr.gov>
Date: Sun, Jul 29, 2018 at 8:24 AM
Subject: Change Order - Lewiston Dam

Project: Lewiston Dam


Please make the following release changes to the Trinity River:



Date                Time         From (cfs)     To (cfs)

07/29/2018      0800           1250               800

07/29/2018      0900             800               450


Comment: Emergency release due to power shutdown and fire activity.  Expect
possible reservoir and river release fluctuations.
Issued by: Tom Patton


On Jul 28, 2018, at 5:22 PM, Thomas Patton <tpatton at usbr.gov> wrote:

Project: Lewiston Dam


Please make the following release changes to the Trinity River:



Date                Time         From (cfs)     To (cfs)

07/28/2018      1730              750               1250


Comment: Emergency release due to power shutdown and fire activity.  Expect
possible reservoir and river release fluctuations.
Issued by: Tom Patton


On Jul 28, 2018, at 3:39 PM, Thomas Patton <tpatton at usbr.gov> wrote:


Due to the fire activity, Trinity Dam became isolated from the power
network and continues to serve a local area of power for safety purposes.
Spring Creek and Carr power plants are currently down. As a result,
Lewiston water elevations were managed by emergency increased releases from
Lewiston Dam and Carr Bypass.   Over Friday night, Lewiston Lake reservoir
rose higher than the normal operating range which resulted in an increase
in release from the Trinity River to about 1,100 cfs.  River releases are
coming down today but are still higher than what was noted yesterday.
Please take extra precautions due to varying releases on the Trinity River.
  We are trying to reduce the lake levels but expect this will be difficult
due to the facility communication issues and power generation situation.
Low lying areas surrounding the lake and marinas at Lewiston Lake are
expected to be affected by the higher and variable lake levels.
Reclamation managed to get Lewiston Dam releases to the Trinity River down
to about 750 cfs by 3:00 pm Saturday afternoon and will remain at this
level until further notice.


Issued by: Tom Patton
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