Percy Priest Lake lake and shoreline

Percy Priest Lake Water Level

Officially J. Percy Priest Reservoir

Tennessee

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Percy Priest Lake

Percy Priest Lake is currently 0.3 feet below full pool, with a water-surface elevation of 489.7 feet.

489.66 ft · Updated 6 hours ago · Tennessee Valley Authority

Current level

489.66ft

−0.34 ft vs full pool

Normal

Vs full pool

Since last reading

Down 0.02 ft

Previous readingSep 23489.67 ft

7-day change

Down 0.16 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 0.49 ft

30 daily readings in the last 30 days

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Water Level History

Current
489.66 ft
24h
-0.02 ft
7d
-0.16 ft
30d
-0.49 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Percy Priest Lake is currently 489.66 ft, 0.34 ft below its full pool. The lake has fallen 0.16 ft over the past 7 days and 0.49 ft over the past 30 days.

Percy Priest Lake Level Details

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

Conditions & Reference

Level status

0.34 ft below full pool

Current level
489.66 ft
Full pool
490 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
TVA

Reference levels

  • Full pool490 ft

Watershed drought

Moderate Drought

99.9% of watershed in official drought (D1+).

Severity

NoneExtreme
Trend
Worsening

Watershed drought conditions

Davidson County, TN

Moderate Drought

Moderate Drought. Moderate drought is affecting the watershed.. Trend: Worsening compared with last week. Official drought yes

Severity

NoneExtreme

Weekly trend

Worsening

Compared with last week

Official drought

Yes

99.9% of the watershed is currently classified as official drought (D1+).

Expected impacts

  • Stream inflows may run below normal
  • Lake levels can decline faster between rain events
  • Vegetation stress may increase over time

U.S. Drought Monitor · map date Sep 22, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Davidson County, TN

Daily level summary

DateLevelChange
Sep 24, 2026489.65-0.02
Sep 23, 2026489.67-0.03
Sep 22, 2026489.7-0.01
Sep 21, 2026489.71-0.03
Sep 20, 2026489.74-0.03
Sep 19, 2026489.770
Sep 18, 2026489.77-0.04

Common questions about Percy Priest Lake’s water level

  • The current water level at Percy Priest Lake is 489.66 ft (updated 6 hours ago). You can track the Percy Priest Lake lake level on the interactive chart and daily history above.

  • Full pool for Percy Priest Lake is 490 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Percy Priest Lake lake level is falling — falling about 0.16 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Percy Priest Lake is currently 0.34 ft below full pool.

Lake level glossary

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

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