The 2020 Fall HFE - Revision history

Cellsworth at 21:26, 20 October 2021

2021-10-20T21:26:39Z

Cellsworth at 16:57, 19 November 2020

2020-11-19T16:57:21Z

Cellsworth: Created page with " {{Infobox Person |name = High Flow Experiment- 2020 |image = CRC 121119 0038.JPG ‎ |alma_mater = |Job Title = November 7-11 |Previous_Title_ = |Previ..."

2020-11-19T16:53:14Z

Created page with " {{Infobox Person |name = High Flow Experiment- 2020 |image = CRC 121119 0038.JPG ‎ |alma_mater = |Job Title = November 7-11 |Previous_Title_ = |Previ..."

New page

{{Infobox Person
|name = High Flow Experiment- 2020
|image = CRC 121119 0038.JPG ‎
|alma_mater =
|Job Title = November 7-11
|Previous_Title_ =
|Previous_Title_ =
|spouse =
|children =
|birth_date =
|birth_place =
}}

== 2020 High Flow Experiment Snapshot ==
*The 2020 HFE was not conducted for lack of adequate sediment input from the Paria River

==Sediment Conditions==
'''Fall Accounting Period'''
*Paria input (Jul 1 - Nov 30):
*Accumulated in Upper Marble Canyon (Jul 1 - Nov 30, lower bound) =
*Accumulated in Lower Marble Canyon (Jul 1 - Nov 30, lower bound) =
*Available for HFE:

== SUPPORTING DOCUMENTS ==

== COMPLIANCE ==

== CONCERNS ==

== ADDITIONAL ==

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@@ Line 22: / Line 22: @@
 ==Sediment Conditions==
 '''Fall Accounting Period'''
-*Paria input (Jul 1 - Nov 30):
+*Paria input (Jul 1 - Nov 30): 6,385 mt
-*Accumulated in Upper Marble Canyon (Jul 1 - Nov 30, lower bound) =
+[[File:2020FallHFE Paria.png|thumb|right|400px|[http://www.gcmrc.gov/discharge_qw_sediment/station/GCDAMP/09382000#/ '''Paria River gage at Lees Ferry'''] ]]
 *Accumulated in Lower Marble Canyon (Jul 1 - Nov 30, lower bound) =
-*Available for HFE:
+*Accumulated in Upper Marble Canyon (Jul 1 - Nov 30, lower bound) = -160,000 mt
 == SUPPORTING DOCUMENTS ==

@@ Line 14: / Line 14: @@
 == 2020 High Flow Experiment Snapshot ==
-*The 2020 HFE was not conducted for lack of adequate sediment input from the Paria River
+There will be no fall High-Flow Experiment at Glen Canyon Dam in 2020. The best available data and modeling indicated that sediment triggering conditions necessary to conduct a 2020 fall HFE at Glen Canyon Dam were not met. HFEs are restricted to limited periods of the year when the highest volumes of sediment may be available to build sandbars in the Grand Canyon. A lack of storms over the Paria River basin resulted in limited sediment input to the Colorado River below Glen Canyon Dam this year. Under the protocol outlined in the Long-Term Experimental and Management Plan Record of Decision, when sufficient sediment has accumulated, fall HFEs can be implemented in October or November. On October 16, 2020, the Glen Canyon Dam Technical Team convened to review current conditions and concluded that sediment conditions were insufficient to consider implementing a fall HFE in 2020. The next window for a potential HFE will be March/April 2021.
 ==Sediment Conditions==