Skip to content
lakeglance

WashingtonReservoir, 2,434 acres, Pierce County

Lake Tapps water level

Lake Tapps, Washington
Photo: Steven Pavlov, CC BY-SA 4.0

Current level

539.14ft NGVD29

Reading from Oct 25, 2026

Near normal for October

Past 24 hours
-0.01ft
Past 7 days
-0.18ft
Past 30 days
-0.96ft
vs typical October
-2.01ft

Lake Tapps was at 539.14 ft on October 25, falling 0.18 ft over the past week. That is near normal for October: the typical October level is 541.15 ft, so the lake is 2.01 ft below its usual mark.

Last 30 days

539.0540.0541.0typicalSep 24Oct 9Oct 24

Shaded band shows the lowest and highest October monthly averages on record. Dashed line is the typical October level.

Typical level through the year

Each bar spans the range of monthly averages on record for that month. The line marks the median. The orange dot is where the lake sits now.

500520540JFMAMJJASOND

Recent daily readings

Lake Tapps daily mean water level, newest first
DateLevel (ft NGVD29)Change
Oct 24, 2026539.15-0.04
Oct 23, 2026539.19-0.03
Oct 22, 2026539.22-0.04
Oct 21, 2026539.26-0.03
Oct 20, 2026539.29-0.03
Oct 19, 2026539.32-0.04
Oct 18, 2026539.36-0.03
Oct 17, 2026539.39-0.03
Oct 16, 2026539.42-0.04
Oct 15, 2026539.46-0.03
Oct 14, 2026539.49-0.03
Oct 13, 2026539.52-0.03
Oct 12, 2026539.55-0.04
Oct 11, 2026539.59-0.04

Reading these numbers

Readings are elevations in feet above the National Geodetic Vertical Datum of 1929 (NGVD29), the reference most older dam and lake charts use. If you compare with a newer chart in NAVD88, expect a difference of a few feet. Our glossary explains NGVD29 vs NAVD88.

On a reservoir, a few feet of drop changes the shoreline more than you would think. Low water exposes stumps, sandbars and old roadbeds that are normally well under the hull, and some ramps end before the water does.

High water brings its own problems: floating debris after storms, flooded docks and courtesy piers, and no-wake rules near flooded campgrounds. A quick look at the trend before you hitch up saves a wasted trip.

The gauge is listed by USGS as Lake Tapps near Sumner, WA. Wind can pile water up at one end of a big lake for a few hours, so short spikes on a windy day are normal.

Lake Tapps water level questions

What is the water level at Lake Tapps today?

Lake Tapps was at 539.14 ft on October 25, falling 0.18 ft over the past week. That is near normal for October: the typical October level is 541.15 ft, so the lake is 2.01 ft below its usual mark.

Is Lake Tapps high or low right now?

Compared with the long-term record for October, the lake is near normal. The October monthly average has ranged from 525.91 to 541.97 ft, with a typical value of 541.15 ft.

Is Lake Tapps rising or falling?

Over the last seven days the level has fallen (-0.18 ft), and it is -0.96 ft compared with 30 days ago.

Where does the Lake Tapps water level data come from?

From the U.S. Geological Survey, gauge 12101000 (Lake Tapps near Sumner, WA). USGS publishes provisional readings every 15 to 60 minutes; they can be revised later after quality checks.

How often is this page updated?

The page itself is rebuilt every day with the latest daily values, and the current reading refreshes straight from the USGS each time you open it.

Nearby lakes

If Tapps is blown out, these are the closest alternatives. Tap through for their water levels.