Difference between revisions of "The 2018 Fall HFE"

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(Created page with " {{Infobox Person |name = High Flow Experiment- 2018 |image = CRC 121119 0038.JPG ‎ |alma_mater = |Job Title = November 7-11 |Previous_Title_ = |Previ...")
 
 
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{{Infobox Person
 
{{Infobox Person
 
|name          = High Flow Experiment- 2018
 
|name          = High Flow Experiment- 2018
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|image        = CRC 121119 0038.JPG ‎
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|image        = 2018HFE_lights.jpg ‎
 
|alma_mater    =  
 
|alma_mater    =  
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|Job Title  = November 7-11
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|Job Title  = November 5-8
 
|Previous_Title_ =  
 
|Previous_Title_ =  
 
|Previous_Title_ =  
 
|Previous_Title_ =  
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== 2018 High Flow Experiment Snapshot ==
 
== 2018 High Flow Experiment Snapshot ==
  
−
==Sediment Conditions==
+
==Sediment Conditions==  
−
'''Fall Accounting Period'''
+
'''Fall Accounting Period''' [[File:2018_paria_input.png|thumb|right|400px|[http://www.gcmrc.gov/discharge_qw_sediment/station/GCDAMP/09382000#/ '''Paria River gage at Lees Ferry'''] ]]
−
*Paria input (Jul 1 - Sept 21): 709,000
+
*Paria input (Jul 1 - Nov 4): 753,000
−
*Accumulated in Upper Marble Canyon (Jul 1 - Sept 4, lower bound) = 238,000
+
*Accumulated in Upper Marble Canyon (Jul 1 - Oct 1, lower bound) = 240,000
−
*Accumulated in Lower Marble Canyon (Jul 1 - Sept 4, lower bound) = 84,000
+
*Accumulated in Lower Marble Canyon (Jul 1 - Oct 1, lower bound) = -68,000
−
*Available for HFE: 238,000 + 84,000 = 322,000  
+
*Available for HFE: 240,000 + -68,000 = 172,000
 
 
−
'''HFE Transport'''
+
'''HFE Transport''' [[File:2018 upper marble canyon.png|thumb|right|400px|[http://www.gcmrc.gov/discharge_qw_sediment/reach/GCDAMP/09380000/09383050 '''Upper Marble Canyon'''] ]]
−
*Paria input (Nov 5 - 10):
+
*Paria input (Nov 5 - 10): 1,119
−
*Evacuated from Upper Marble Canyon (Nov 7 - 12, lower bound) =  
+
*Evacuated from Upper Marble Canyon (Nov 5 - 10, lower bound) = -360,000
−
*Evacuated from Lower Marble Canyon (Nov 7 - 12, lower bound) =
+
*Evacuated from Lower Marble Canyon (Nov 5 - 10, lower bound) = -160,000
−
*Left over in Marble Canyon after HFE (Nov 7 - 12):   
+
*Left over in Marble Canyon after HFE (Nov 5 - 10): 172,000 + 1,119 - 360,000 - 160,000 = -346,881    
 
 
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'''Winter Accounting Period'''
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'''Fall Accounting Period''' [[File:2018 lower marble canyon.png|thumb|right|400px|[http://www.gcmrc.gov/discharge_qw_sediment/reach/GCDAMP/09383050/09383100 '''Lower Marble Canyon'''] ]]
−
*Paria input (Nov 11 to Apr 1):  
+
*Paria input (Nov 11 to Apr 1): 366,588
−
*Evacuated from Upper Marble Canyon (Dec 1 to Apr 1, lower bound) =
+
*Accumulated in Upper Marble Canyon (Dec 1 to Jun 30, lower bound) = -120,000
−
*Evacuated from Lower Marble Canyon (Dec 1 to Apr 1, lower bound) =
+
*Accumulated in Lower Marble Canyon (Dec 1 to Jun 30, lower bound) = 120,000
−
*Available for spring HFE:
+
*Available for spring HFE: -120,000 + 120,000 = 0
  
−
== SUPPORTING DOCUMENTS ==
+
==HFE Details==
 +
'''Schedule & Duration'''
 +
*Nov. 5 - 6:00 a.m. begin upramp to powerplant capacity (~23,100 cfs) [7 generation units]
 +
*Nov. 5 - 11:00 a.m. open bypass tubes, reach full bypass at 2:00 p.m. (38,100 cfs)
 +
*Nov. 8 - 9:00 a.m. end of bypass
 +
*Nov. 8 - 3:00 p.m. end of High Flow Experiment
 +
*Total duration: 3 days & 10 hours; 2 ½ days at peak release (60 hours)
 +
 
 +
'''Ramp Rates'''
 +
*Ramp up: 4,000 cfs/hr from 6,500 - 23,100 cfs, then 3,750 cfs/hr to peak (38,100 cfs)
 +
*Ramp down: 1,875 cfs/hr from 38,100 – 23,100 cfs, then 2,500 cfs/hr to 9,000 cfs
 +
 
 +
'''HFE Release Details'''[[File:2018HFE.jpg|thumb|right|400px|https://www.usbr.gov/uc/rm/gcdHFE/]]
 +
*Maximum total release: '''38,100 cfs'''
 +
*Powerplant capacity: 23,100 cfs
 +
*River outlet tubes: 15,000 cfs
 +
*Hydropower generation units available: 7 (one unit off-line for replacement)
 +
*River outlet tubes: 4
 +
 
 +
'''Releases and Lake Elevation'''
 +
*Releases will range from 6,500 - 9,000 cfs prior to and after the HFE
 +
*Lake elevation is projected to decrease by approximately 7 inches during the 3-day experiment
 +
*Estimated acre feet of water bypassed during HFE:  '''81 kaf'''
 +
 
 +
'''Costs'''
 +
*Estimated costs to hydropower: '''$923,963'''
 +
*Actual costs to hydropower: [[Media:HFE 2019 Report V3 tv qp.docx| '''$1,300,000''']]
 +
*Direct expenses for removal of concession assets: TBD
 +
 
 +
== SUPPORTING DOCUMENTS ==  
 +
*[[Media:HFE 2019 Report V3 tv qp.docx| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2019 ]]
 +
*[https://www.usbr.gov/uc/progact/amp/twg/2018-10-10-twg-meeting/Attach_07.pdf Possible LTEMP Experiment: Fall 2018 HFE PPT]
 +
*[https://www.usbr.gov/uc/rm/gcdHFE/pdfs/20181018%20DOI%20HFE%20Decision%20Memo_ASWS%20Signed_with%20attachments.pdf 2018 High Flow Experimental Release Decision Memorandum]
 +
*[[Media:Final TechTeamReport Fall 2018 HFE Recommendation.pdf| Final Tech Team Report: Recommendation to Implement a Fall 2018 High Flow Experiment at Glen Canyon Dam, November 5-8, 2018]]
 +
[[Image:2018HFE_traveltime.jpg|thumb|right|400px|https://www.usbr.gov/uc/rm/gcdHFE/]]
  
 
== COMPLIANCE ==
 
== COMPLIANCE ==
 +
*[https://www.usbr.gov/newsroom/newsrelease/detail.cfm?RecordID=63503 News Release: Interior Initiates High-Flow Experiment at Glen Canyon Dam]
 +
*[https://www.usbr.gov/newsroom/newsrelease/detail.cfm?RecordID=63424 Media Advisory: High-Flow Experiment at Glen Canyon Dam]
  
 
== CONCERNS ==
 
== CONCERNS ==
 +
*[[Media:2018 Fall HFE Deferral letter 09-14-18.pdf|Angler's 2018 HFE deferral letter]]
 +
*[[Media:Memo - GCMRC response to HFE deferral letter - 9-27-18 (1).pdf|GCRMC response to HFE deferral request]]
  
 
== ADDITIONAL ==
 
== ADDITIONAL ==
−
 
+
*[https://www.azcentral.com/story/news/local/arizona-environment/2018/11/05/grand-canyon-flooded-high-flow-experiment-colorado-river-federal-officials-glen-canyon-dam-lake-mead/1861287002/ AZ Central news article: Controlled flood of the Grand Canyon begins a four-day exercise on the Colorado River]
 +
*[https://www.azcentral.com/story/news/local/arizona-environment/2018/11/19/fat-fish-after-grand-canyon-flood-isnt-all-good-news-colorado-river/1954378002/ Grand Canyon flood fattened fish, but it's not all good news on the Colorado River]
 +
*[https://www.youtube.com/watch?v=H3UIW_KZddg&feature=youtu.be Lighted bypass tube video]
 +
*[https://www.youtube.com/watch?v=bchH2m80Y3g Colorado River Pearce Ferry Rapid After High Flow Release From Glen Canyon Dam]
 +
*[https://www.nps.gov/grca/learn/nature/hfe.htm NPS: November 2018 High-Flow Experiment]
 
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<gallery>
 
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Latest revision as of 14:58, 3 November 2022

High Flow Experiment- 2018
2018HFE lights.jpg

2018 High Flow Experiment Snapshot

Sediment Conditions

Fall Accounting Period
Paria River gage at Lees Ferry
  • Paria input (Jul 1 - Nov 4): 753,000
  • Accumulated in Upper Marble Canyon (Jul 1 - Oct 1, lower bound) = 240,000
  • Accumulated in Lower Marble Canyon (Jul 1 - Oct 1, lower bound) = -68,000
  • Available for HFE: 240,000 + -68,000 = 172,000
HFE Transport
Upper Marble Canyon
  • Paria input (Nov 5 - 10): 1,119
  • Evacuated from Upper Marble Canyon (Nov 5 - 10, lower bound) = -360,000
  • Evacuated from Lower Marble Canyon (Nov 5 - 10, lower bound) = -160,000
  • Left over in Marble Canyon after HFE (Nov 5 - 10): 172,000 + 1,119 - 360,000 - 160,000 = -346,881
Fall Accounting Period
Lower Marble Canyon
  • Paria input (Nov 11 to Apr 1): 366,588
  • Accumulated in Upper Marble Canyon (Dec 1 to Jun 30, lower bound) = -120,000
  • Accumulated in Lower Marble Canyon (Dec 1 to Jun 30, lower bound) = 120,000
  • Available for spring HFE: -120,000 + 120,000 = 0

HFE Details

Schedule & Duration

  • Nov. 5 - 6:00 a.m. begin upramp to powerplant capacity (~23,100 cfs) [7 generation units]
  • Nov. 5 - 11:00 a.m. open bypass tubes, reach full bypass at 2:00 p.m. (38,100 cfs)
  • Nov. 8 - 9:00 a.m. end of bypass
  • Nov. 8 - 3:00 p.m. end of High Flow Experiment
  • Total duration: 3 days & 10 hours; 2 ½ days at peak release (60 hours)

Ramp Rates

  • Ramp up: 4,000 cfs/hr from 6,500 - 23,100 cfs, then 3,750 cfs/hr to peak (38,100 cfs)
  • Ramp down: 1,875 cfs/hr from 38,100 – 23,100 cfs, then 2,500 cfs/hr to 9,000 cfs
HFE Release Details
https://www.usbr.gov/uc/rm/gcdHFE/
  • Maximum total release: 38,100 cfs
  • Powerplant capacity: 23,100 cfs
  • River outlet tubes: 15,000 cfs
  • Hydropower generation units available: 7 (one unit off-line for replacement)
  • River outlet tubes: 4

Releases and Lake Elevation

  • Releases will range from 6,500 - 9,000 cfs prior to and after the HFE
  • Lake elevation is projected to decrease by approximately 7 inches during the 3-day experiment
  • Estimated acre feet of water bypassed during HFE: 81 kaf

Costs

  • Estimated costs to hydropower: $923,963
  • Actual costs to hydropower: $1,300,000
  • Direct expenses for removal of concession assets: TBD

SUPPORTING DOCUMENTS

https://www.usbr.gov/uc/rm/gcdHFE/

COMPLIANCE

CONCERNS

ADDITIONAL


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