The 2017 Fall HFE

High Flow Experiment- 2017

2017 High Flow Experiment Snapshot

• The 2017 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): 274,000
• Accumulated in Upper Marble Canyon (Jul 1 - Nov 30, lower bound) = 2,000
• Accumulated in Lower Marble Canyon (Jul 1 - Nov 30, lower bound) = 2,000
• Available for HFE: 2,000 + 2,000 = 4,000

Winter Accounting Period

• Paria input (Dec 1 to Apr 1): 17,000
• Evacuated from Upper Marble Canyon (Dec 1 to Apr 1, lower bound) = -187,000
• Evacuated from Lower Marble Canyon (Dec 1 to Apr 1, lower bound) = -16,000
• Available for spring HFE: 17,000 - 187,000 -16,000 = -186,000

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