The 2019 Fall HFE

High Flow Experiment- 2017

2019 High Flow Experiment Snapshot

• The 2019 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): 52,711
• Accumulated in Upper Marble Canyon (Jul 1 - Nov 30, lower bound) = -190,000
• Accumulated in Lower Marble Canyon (Jul 1 - Nov 30, lower bound) = -150,000
• Available for HFE: -190,000 + -150,000 = -40,000

Winter Accounting Period

• Paria input (Dec 1 to Apr 1): 50,737
• Evacuated from Upper Marble Canyon (Dec 1 to Apr 1, lower bound) =
• Evacuated from Lower Marble Canyon (Dec 1 to Apr 1, lower bound) =
• Available for spring HFE:

SUPPORTING DOCUMENTS

• 2019 Glen Canyon Leadership Team memo for Implementation of Experiments under the Long Term Experimental and Management Plan

---