264.51 ft NGVD29
level 2.1 ft below full pool — on the low side for mid-August
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 01063995) and updates live when you load this page.
Sebago Lake through the year
The band is the lake's own normal: where the level has run on each calendar day, 2000–2026. 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 | 266.65 ft NGVD29 · per Sappi/Eel Weir Dam (FERC); USGS gauge; Portland Water District monitors full-pool reference |
|---|---|
| Gauge | USGS gauge 01063995 · U.S. Geological Survey National Water Information System |
| Datum | NGVD29 — 62614 NGVD29. Full pond 266.65 ft under state lake-level order (raised to full no sooner than May 1; drawn to 262.65 by Nov 1). |
| 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 Sebago Lake right now?
Sebago Lake is at 264.51 ft (NGVD29) as of August 14, 2026 — 2.1 ft below full pool — on the low side for mid-August
Is Sebago Lake full?
Not quite — at 264.51 ft, Sebago Lake is 2.1 ft below its full pool of 266.65 ft (NGVD29).
What is full pool for Sebago Lake?
Full pool (the conservation pool) for Sebago Lake is 266.65 ft NGVD29, per Sappi/Eel Weir Dam (FERC); USGS gauge; Portland Water District monitors full-pool reference. Levels above it use flood storage; levels below it are drawdown.