1281.20 ft NGVD29
level 8.8 ft below full pool — on the low side for mid-August
Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series GCL.Elev-Forebay.Inst.1Hour.0.CBT-REV) and updates live when you load this page.
Lake Roosevelt through the year
The band is the lake's own normal: where the level has run on each calendar day, 1990–2026. The summer drawdown — and how this year sits in it — shows up without reading a single number.
This year vs the years that matter
This year's trace against last year and the driest and wettest years on record — the drought-context question every lake regular asks.
- 2024 (wettest on record)
- 2001 (driest on record)
- 2025 (last year)
- 2026 (this year)
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 1290.00 ft NGVD29 · per USBR (Grand Coulee Dam) full-pool reference |
|---|---|
| Gauge | USACE series GCL.Elev-Forebay.Inst.1Hour.0.CBT-REV · U.S. Army Corps of Engineers Access to Water data |
| Datum | NGVD29 — Full pool = NWDP level 'GCL.Elev.Inst.0.Top of Normal' = 1290.0. Live = Grand Coulee forebay (GCL) hourly. USGS 12436000 dv 62614 matches datum (1283.98 on 8/03) but lags ~12 days. |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
How full is Lake Roosevelt right now?
Lake Roosevelt is at 1281.20 ft (NGVD29) as of August 15, 2026 — 8.8 ft below full pool — on the low side for mid-August
Is Lake Roosevelt full?
Not quite — at 1281.20 ft, Lake Roosevelt is 8.8 ft below its full pool of 1290.00 ft (NGVD29).
What is full pool for Lake Roosevelt?
Full pool (the conservation pool) for Lake Roosevelt is 1290.00 ft NGVD29, per USBR (Grand Coulee Dam) full-pool reference. Levels above it use flood storage; levels below it are drawdown.