Difference between revisions of "GCDAMP- HFE 2012"
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*'''Cultural:''' No adverse effects to historic properties of the 2012 HFE were identified. (USBR Memo 2013) | *'''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 (Provisional- unpublished data) | *'''HBC & Native Fish:'''No measuable positive effect on HBC or other native fish. (Provisional- unpublished data) | ||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. | + | *'''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do not indicate a strong effect on food base-- but is expected to take longer to recover over the winter period (GCMRC unpublished data) | ||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 | ||
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Revision as of 14:38, 28 October 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)
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 (Provisional- unpublished data)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
Contributor: Category: Sediment, Recreation, Water delivery
