Lake Shannon

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

At Concrete, WA · Washington · USGS gauge

Water level · NAVD88

416.10FT

Gauge elevation · no % full published

7 days +1.43 ft30 days +6.29 ftvs last year −3.58 ft

Reading for Oct 25, 2026, 17:00 UTC · page refreshed Oct 25, 21:53 UTC
Source: U.S. Geological Survey (Water Data for the Nation)

Worth going today?Today

Fair – check conditions

Light wind, 49% chance of rain

Wind7 mph

Rain49%

Temp55°F

Level416.1 ft

TodayChance Light Rain · 55°F
NNE 7 mph · rain 49%

TonightSlight Chance Light Rain · 41°F
NE 2 to 8 mph · rain 21%

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 Shannon's latest daily level (Oct 25, 2026) is 416.10 (NAVD88) ft.

Over the past 7 days the lake has been rising (+1.43 ft), and it is +6.29 ft over 30 days.

Compared with a year ago (419.68 ft, same time of day), the lake is 3.58 ft lower.

Readings come from the USGS gauge “LAKE SHANNON AT CONCRETE, WA”. Gauge elevations are not directly comparable between lakes because each uses its own datum.

Lake facts

Gauge / station	LAKE SHANNON AT CONCRETE, WA
Elevation datum	ft (NAVD88)
Gauge location	48.5479, -121.7407

Nearby lakes

Baker Lake7 mi N711.12 ft−4.02 ft Spada Lake40 mi S1,400.16 ft−3.32 ft South Fork Tolt Reservoir59 mi S1,719.77 ft−2.72 ft Sammamish Lake69 mi S25.94 ft−0.01 ft Keechelus Lake87 mi S2,432.74 ft−0.58 ft

Common questions

Is Lake Shannon rising or falling?

Over the last 7 days it changed +1.43 ft and over 30 days +6.29 ft.

How full is Lake Shannon?

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. This page is not affiliated with or endorsed by the USGS. See data sources.