Boysen Reservoir lake and shoreline

Boysen Reservoir Water Level

Officially Boysen Reservoir (Wind River)

Wyoming

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Boysen Reservoir

Boysen Reservoir is currently 14.8 feet below full pool, with a water-surface elevation of 4710.2 feet.

4710.19 ft · Updated 3 hours ago · U.S. Bureau of Reclamation

Current level

4,710.19ft

−14.81 ft vs full pool

Low

Vs full pool

Since last reading

No meaningful change

Previous readingOct 44,710.26 ft

7-day change

Up 0.15 ft

7-day trend: Rising

8 daily readings in the last 7 days

30-day change

Down 0.10 ft

31 daily readings in the last 30 days

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Water Level History

Current
4710.19 ft
24h
0.00 ft
7d
+0.15 ft
30d
-0.10 ft

Elevation (ft) MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Boysen Reservoir is currently 4710.19 ft, 14.81 ft below its full pool. The lake has risen 0.15 ft over the past 7 days and fallen 0.10 ft over the past 30 days.

Boysen Reservoir Level Details

Reference elevations, recent daily readings, data sources, and answers to common questions.

Conditions & Reference

Level status

14.81 ft below full pool

Current level
4,710.19 ft
Full pool
4,725 ft
DatumVertical reference for published pool and stage elevations at this lake (from the lake catalog).
Not available
Elevation reference
MSL
Source
USBR

Reference levels

  • Full pool4,725 ft

Watershed drought

Severe Drought

90.2% of watershed in official drought (D1+).

Severity

NoneExtreme
Trend
Improving

Watershed drought conditions

Fremont County, WY

Severe Drought

Severe Drought. Severe drought conditions are present.. Trend: Improving compared with last week. Official drought yes

Severity

NoneExtreme

Weekly trend

Improving

Compared with last week

Official drought

Yes

90.2% of the watershed is currently classified as official drought (D1+).

Expected impacts

  • Lower stream inflows
  • Lake levels may decline faster
  • Vegetation is becoming drier
  • Minor increase in wildfire risk

U.S. Drought Monitor · map date Sep 29, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Fremont County, WY

Daily level summary

DateLevelChange
Oct 5, 20264,710.260
Oct 4, 20264,710.260
Oct 3, 20264,710.26+0.03
Oct 2, 20264,710.23+0.01
Oct 1, 20264,710.22+0.03
Sep 30, 20264,710.19+0.05
Sep 29, 20264,710.14+0.03

Common questions about Boysen Reservoir’s water level

  • The current water level at Boysen Reservoir is 4,710.19 ft (updated 3 hours ago). You can track the Boysen Reservoir lake level on the interactive chart and daily history above.

  • Full pool for Boysen Reservoir is 4,725 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Boysen Reservoir lake level is rising — rising about 0.15 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Boysen Reservoir is currently 14.81 ft below full pool.

Lake level glossary

Definitions for pool targets, datums, and how elevation readings are labeled.

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