1327.01 ft NAVD88
level 1.0 ft below full pool — typical for mid-August
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 03012520) and updates live when you load this page.
Allegheny Reservoir through the year
The band is the lake's own normal: where the level has run on each calendar day, 2015–2026. 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.
- 2026 (wettest on record)
- 2016 (driest on record)
- 2025 (last 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 | 1328.00 ft NAVD88 · per USACE Pittsburgh District (LRP) full-pool reference |
|---|---|
| Gauge | USGS gauge 03012520 · U.S. Geological Survey National Water Information System |
| Datum | NAVD88 — USGS gauge publishes only 62615 NAVD88; USACE summer pool 1328 ft is NGVD29 (NAVD88 reads ~0.6-0.7 ft lower here), so current 1326.77 NAVD88 is within ~0.5 ft of summer pool. |
| 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 Allegheny Reservoir right now?
Allegheny Reservoir is at 1327.01 ft (NAVD88) as of August 14, 2026 — 1.0 ft below full pool — typical for mid-August
Is Allegheny Reservoir full?
Not quite — at 1327.01 ft, Allegheny Reservoir is 1.0 ft below its full pool of 1328.00 ft (NAVD88).
What is full pool for Allegheny Reservoir?
Full pool (the conservation pool) for Allegheny Reservoir is 1328.00 ft NAVD88, per USACE Pittsburgh District (LRP) full-pool reference. Levels above it use flood storage; levels below it are drawdown.