Lake Level Tracker

Washington lake & reservoir water levels

27 lakes tracked · 27 with a current elevation reading · USGS Water Services + USACE CWMS Data

Washington has 27 lakes and reservoirs tracked here — 27 with a current elevation reading, from USGS Water Services and USACE CWMS Data. Sort the table by level, storage, %-full, or trend, then open any lake for its full elevation-with-datum, trend sparkline, storage, and source-and-vintage stamp. Figures are provisional readings for reference — not for navigation or safety decisions.

Statewide totals Washington · USGS + USACE
Lakes tracked
27

27 report a current pool-elevation reading; the rest report storage only.

With elevation reading
27
With %-full figure
0

All Washington lakes

Every lake tracked in Washington. Click a column heading to sort, or filter by name. Elevation lakes are listed before storage-only lakes; a missing figure always shows "not reported," never an estimate.

Washington lakes, elevation lakes first, by name.
Datum Trend
Baker Lake 725.97 NAVD88 — — →Steady
Bennington Lake 1,202.95 NGVD29 — — ↓Falling
Castle Lake 2,577.78 NGVD29 — — ↓Falling
Conconcully Reservoir 2,271.44 NGVD29 — — ↓Falling
Conconully Lake at Conconully 2,309.29 NGVD29 — — ↓Falling
Franklin Roosevelt Lake 1,274.57 NGVD29 — — ↑Rising
Howard a Hanson Reservoir 1,163.68 NGVD29 44,860 — ↓Falling
Lake Merwin 237.00 NGVD29 — — ↑Rising
Lake Quinault 184.45 NAVD88 — — ↓Falling
Lake Shannon at Concrete 425.69 NAVD88 — — ↓Falling
Lake Tapps 541.28 NGVD29 43,600 — ↓Falling
Lenore Lake 1,077.62 NGVD29 — — ↓Falling
Moses Lake at Moses Lake 1,046.73 NGVD29 — — →Steady
Mud Mountain Lake 921.22 NGVD29 25 — ↑Rising
Osoyoos Lake 912.01 NGVD29 — — ↓Falling
Rock Island Dam Pp North Hw 612.39 NGVD29 — — ↓Falling
Rock Island Pp Tw Unit 1 573.47 NGVD29 — — ↑Rising
Rocky Reach Hw Unit 10w 706.53 NGVD29 — — →Steady
Sammamish Lake 26.06 NGVD29 — — ↓Falling
Soap Lake 1,069.13 NGVD29 — — ↓Falling
South Fork Tolt Reservoir 1,752.16 NGVD29 — — ↓Falling
Spada Lake 1,443.91 NGVD29 — — ↓Falling
Spirit Lake at Tunnel at Spirit Lake 3,400.49 NGVD29 — — ↓Falling
Spirit Lake West at Spirit Lake 3,441.33 NGVD29 — — ↓Falling
Swift Reservoir 3.2 Mi East of Dam 974.00 NGVD29 — — ↓Falling
Wynoochee Lake 767.64 NGVD29 38,350 — ↓Falling
Yale Reservoir 479.00 NGVD29 — — →Steady

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Frequently asked questions

How many lakes and reservoirs in Washington are tracked here?
27, of which 27 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.
Which Washington lakes report a %-full figure?
None of Washington's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.
Where does the data come from?
USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Explore

Read the methodology behind these figures, or search all lakes nationally from the home page.