Boysen Reservoir storage

Name: Boysen Reservoir storage
Creator: The Watershed
Keywords: Boysen Reservoir, reservoir storage, Wind-Bighorn-Missouri, Wyoming, acre-feet

Reservoir storage in Wind-Bighorn-Missouri basin, Wyoming

Last updated Jun 18, 2026

Now 547,309 af, 21% below the 5-yr median.

The numbers
Period	Current	Prior	Change
Week over week	547,309 af	544,765 af	+0.5%
Month over month	547,309 af	517,357 af	+5.8%
Year over year	547,309 af	614,063 af	-10.9%
vs 5-yr median	547,309 af	696,399 af	-21.4%

From the brief

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