Maine has 3 lakes and reservoirs tracked here — 3 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.
3 report a current pool-elevation reading; the rest report storage only.
Every lake tracked in Maine. 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.
| Datum | Trend | ||||
|---|---|---|---|---|---|
| Lewy Lake at Princeton, Maine | 201.46 | NAVD88 | — | — | →Steady |
| Sebago Lake | 263.80 | NGVD29 | — | — | ↓Falling |
| West Grand Lake at Grand Lake Stream, Maine | 297.25 | NAVD88 | — | — | ↓Falling |
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Each lake tracked in Maine has its full record here — current reading, recent trend, and the dam behind it where the National Inventory of Dams has one. Use the table above to jump to a lake, or read straight through.
Datum NAVD88
−0.1 ft over the trend window
Source: USGS site 01019300, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Lewy Lake at Princeton, Maine →
Datum NGVD29
−1.0 ft over the trend window
Source: USGS site 01063995, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for Sebago Lake →
Datum NAVD88
−0.6 ft over the trend window
West Grand Lake at Grand Lake Stream, Maine is held back by West Grand Lake , a timber crib — a framework of logs ballasted with rock , standing 13 ft high and running 487 ft along its crest , built across West Branch St. Croix River in Washington County , near Grand Lake Stream . It was completed in 1836 , and is owned by Woodland Pulp, LLC . Its recorded primary purpose is hydroelectric — releases follow generation schedules, so the level can move on a daily cycle that has nothing to do with drought. Its spillway is gated, so the operator can hold the pool above the spillway crest and meter what leaves. NID classes it significant hazard potential: a failure would be expected to damage property and infrastructure rather than cost lives. It is a consequence rating, not a condition rating. Its most recent condition assessment was satisfactory — no deficiencies recognised for expected loading. National Inventory of Dams record ME00223 — U.S. Army Corps of Engineers, public domain.
Source: USGS site 01018900, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for West Grand Lake at Grand Lake Stream, Maine →
Read the methodology behind these figures, or search all lakes nationally from the home page.