Lake Tapps

Name: Lake Tapps (Washington) water level
Creator: U.S. Geological Survey

near Sumner, WA · Washington · USGS gauge

Water level · NGVD29

539.14FT

Gauge elevation · no % full published

7 days −0.23 ft30 days −1.02 ftvs last year −1.23 ft

Reading for Oct 25, 2026, 18:30 UTC · page refreshed Oct 25, 20:24 UTC
Source: U.S. Geological Survey (Water Data for the Nation)

Worth going today?Today

Windy or wet – use caution

Light wind, 71% chance of rain

Wind2 mph

Rain71%

Temp54°F

Level539.1 ft

TodayLight Rain Likely · 54°F
ESE 2 mph · rain 71%

TonightChance Light Rain · 42°F
ENE 2 mph · rain 47%

NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Field notes

Lake Tapps's latest daily level (Oct 25, 2026) is 539.14 (NGVD29) ft.

Over the past 7 days the lake has been falling (−0.23 ft), and it is −1.02 ft over 30 days.

Compared with a year ago (540.37 ft, same time of day), the lake is 1.23 ft lower.

Readings come from the USGS gauge “LAKE TAPPS NEAR SUMNER, WA”. USGS data are provisional and may be revised. Gauge elevations are not directly comparable between lakes because each uses its own datum.

Lake facts

Gauge / station	LAKE TAPPS NEAR SUMNER, WA
Elevation datum	ft (NGVD29)
Gauge location	47.2409, -122.1918

Nearby lakes

Mud Mountain Lake14 mi SE915.76 ft−0.36 ft Howard A Hanson Reservoir19 mi E1,122.17 ft−7.31 ft Sammamish Lake23 mi N25.94 ft−0.01 ft South Fork Tolt Reservoir39 mi NE1,719.77 ft−2.72 ft Keechelus Lake40 mi E2,432.74 ft−0.58 ft

Common questions

Is Lake Tapps rising or falling?

Over the last 7 days it changed −0.23 ft and over 30 days −1.02 ft.

How full is Lake Tapps?

USGS publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from USGS's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Geological Survey's Water Data API (api.waterdata.usgs.gov), which publishes readings from USGS and partner gauges. Forecasts come from the National Weather Service.

Latest instantaneous reading; 7-day, 30-day and year-ago changes compare readings at the same hour. USGS data are provisional and subject to revision. USGS data are provisional and subject to revision. This page is not affiliated with or endorsed by the USGS. See data sources.