What is the current water level of Lake Tapps?

As of Aug 31, 2026, 12:30 AM (UTC-07:00), the pool elevation was 540.91 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.

Is Lake Tapps full right now?

Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.

Lake Tapps water level — Washington

Washington · USGS · reading Aug 31, 2026, 12:30 AM (UTC-07:00) Provisional

Lake Tapps in Washington was last measured at 540.91 ft (datum NGVD29), as of Aug 31, 2026, 12:30 AM (UTC-07:00) (USGS Water Services). Over its recent trend window the level has been rising (+0.1 ft). This reading is provisional and subject to revision.

Current reading Lake Tapps · Washington

Pool elevation: 540.91 ft
% of conservation pool full: Not reported
Storage: 42,700 acre-ft
Recent trend: ↑Rising

Recent trend

Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Not for navigation or safety decisions (why →)

Source: USGS site 12101000, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →

How Lake Tapps compares nearby

None of the 6 nearby lakes with a current trend are rising right now — this lake's movement looks specific to its own operation rather than shared regional conditions.

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to Lake Tapps, with current level and distance.
Lake	State	Level	Distance
Mud Mountain Lake	WA	917.85 ft	23 km
Howard a Hanson Reservoir	WA	1,153.37 ft	31 km
Sammamish Lake	WA	25.72 ft	38 km
South Fork Tolt Reservoir	WA	1,735.96 ft	63 km
Spada Lake	WA	1,425.95 ft	90 km
Spirit Lake at Tunnel at Spirit Lake	WA	3,400.49 ft	107 km

Frequently asked questions

What is the current water level of Lake Tapps?: As of Aug 31, 2026, 12:30 AM (UTC-07:00), the pool elevation was 540.91 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
Is Lake Tapps full right now?: Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
Where does this data come from?: From USGS site 12101000, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).

More in Washington

See every lake tracked in Washington, or read the methodology behind these figures.