A 2021 Spring HFE

High Flow Experiment- 2021

2021 Spring High Flow Experiment Snapshot

• A 2021 Spring HFE was not conducted for lack of adequate sediment input from the Paria River

Sediment Conditions

Spring Accounting Period

• Paria input (Dec 1 to Jun 30): 10,602 mt

Paria River gage at Lees Ferry

• Evacuated from Upper Marble Canyon (Dec 1 to Jun 30, lower bound) = -93,000 mt

Upper Marble Canyon

• Evacuated from Lower Marble Canyon (Dec 1 to Jun 30, lower bound) = +10,000 mt

Lower Marble Canyon

• Available for Spring HFE: -83,000 mt

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