Difference between revisions of "GCDAMP- HFE 2012"
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*'''500,000 tons of sediment is equivelant to filling a football field 230 feet deep''' (KSalazar) | *'''500,000 tons of sediment is equivelant to filling a football field 230 feet deep''' (KSalazar) | ||
*[[File:Football field- PIC.jpg|thumb]] | *[[File:Football field- PIC.jpg|thumb]] | ||
| − | + | *'''RESULTS OF 2012 HFE | |
| + | *'''Substantial Gain''' to '''18 Sandbars'''--- 55% of sites. | ||
| + | *'''No Substantial Change''' in '''12 sandbars''' --- 36% of sites. | ||
| + | *'''Substantial Loss''' of '''3 sandbars''' --- 9% of sites. | ||
== Effects on Resources == | == Effects on Resources == | ||
Revision as of 18:35, 9 December 2013
| High Flow Experiment- 2012 | |
 |
- HFE DETAILS -SUMMARY: ---DRAFT---- THIS PAGE IS UNDER CONSTRUCTION
- USBR 2012 HFE LINK
Contents
SUPPORTING DOCUMENTS
COMPLIANCE
SAND TRANSPORT caused by 2012 HFE
- @ RM30 = 390,000 metric tons
- @ RM60 = 380,000 metric tons
- @ RM87 = 540,000 metric tons
- @ RM225 = 970,000 metric tons
- At Diamond Creek (RM225), 1,810,000 metric tons were transported by the Colorado River between July 1, 2012, and July 1, 2013. Thus, 54% of the total delivery of sand to Lake Mead reservoir during this 1-year period occurred during approximately 5 days of the November 2012 HFE. For comparison, 45% of the total delivery of sand to Lake Mead reservoir during calendar year 2008 occurred during the 2008 HFE; the 2004 HFE delivered 40% of the total sand delivered to Lake Mead in calendar year 2004.
500,000 Tons of Sediment
- 500,000 tons of sediment is equivelant to filling a football field 230 feet deep (KSalazar)
- RESULTS OF 2012 HFE
- Substantial Gain to 18 Sandbars--- 55% of sites.
- No Substantial Change in 12 sandbars --- 36% of sites.
- Substantial Loss of 3 sandbars --- 9% of sites.
Effects on Resources
- Cultural: No adverse effects to historic properties of the 2012 HFE were identified. (USBR Memo 2013)
- HBC & Native Fish: No measuable positive effect on HBC or other native fish. (Provisional- unpublished data)
- RBT Monitoring: RBT in Glen Canyon moved very little during the period around HFE.
- Foodbase: Initial results do not indicate a strong effect on food base-- but is expected to take longer to recover over the winter period (GCMRC unpublished data)
- Kanab Ambersnail: FWS found in its 2011 BO that this loss of snails/ habitat would not jeopardize the continued existence of the snail
- Whirling Disease: HFE's pose little risk of spreading whirling disease (GCMRC Assessment)
- AZ News Central Video- HFE, Sediment, Jack Schmidt, monitoring LINK
- Feds’ AZ Central News_ Grand Canyon flood a success
Contributor: Category: Sediment, Recreation, Water delivery
