The 2020 Spring HFE

High Flow Experiment- 2020

2020 Spring High Flow Experiment Snapshot

• A 2020 Spring HFE was not conducted for lack of adequate sediment input from the Paria River

Sediment Conditions

Winter Accounting Period

• Paria input (Dec 1 to Jun 30): 13,362 mt

Paria River gage at Lees Ferry

• Evacuated from Upper Marble Canyon (Dec 1 to Apr 1, lower bound) = -150,000 mt

Upper Marble Canyon

• Evacuated from Lower Marble Canyon (Dec 1 to Apr 1, lower bound) = +26,000 mt

Lower Marble Canyon

• Available for Spring HFE: -150,000 + 26,000 = -124,000 mt

SUPPORTING DOCUMENTS

• Potential LTEMP Experiment - 2020 Spring HFE - 1st Notification Letter

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