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Maine · Sappi/Eel Weir Dam (FERC); USGS gauge; Portland Water District monitors

Sebago Lake water level

Today's reading against full pool and Sebago Lake's own seasonal history.

Searched “Sebago lake level” or “lake level for Sebago Lake”? Same lake, same reading — you're in the right place. The current reading is right here too, whether you typed “current Sebago Lake water level” or “current water level at Sebago Lake”.

FULL POOL 262 264 266
Elevation, feet (NGVD29)

as of September 24, 2026

263.00 ft NGVD29

level 3.6 ft below full pool — unusually low for late September

Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 01063995) and updates live when you load this page.

Is Sebago Lake full?

Not quite — 3.6 ft below full pool as of September 24, 2026

How full is Sebago Lake? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.

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.

full pool 262 264 266 JFMAMJJASOND
Median and normal range by day of year, 2000–2026 · elevation, feet (NGVD29)

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.

full pool 262 264 266 JFMAMJJASOND
  • 2026 (this year)
  • 2025 (last year)
  • 2024 (wettest on record)
  • 2001 (driest on record)

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 — Full pond is 266.65 ft under the state lake-level order: the lake is not raised to full before May 1 and is drawn to 262.65 ft by November 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

What is the lake level for Sebago Lake today?

Sebago Lake is at 263.00 ft (NGVD29) as of September 24, 2026 — 3.6 ft below full pool — unusually low for late September.

Is Sebago Lake full?

Not quite — at 263.00 ft on September 24, 2026, Sebago Lake is 3.6 ft below its full pool of 266.65 ft (NGVD29).

How full is Sebago Lake?

Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.

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.