733.13 ft NGVD29
level 0.1 ft above full pool — typical for mid-August
Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series WHHarsha.Elev.Inst.0.0.lrldlb-rev) and updates live when you load this page.
William H. Harsha Lake through the year
The band is the lake's own normal: where the level has run on each calendar day, 2003–2026. 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 (this year)
- 2025 (last year)
- 2005 (wettest on record)
- 2007 (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 | 733.00 ft NGVD29 · per USACE Louisville District full-pool reference |
|---|---|
| Conservation capacity | 90,400 acre-feet · per USACE Louisville District capacity reference |
| Gauge | USACE series WHHarsha.Elev.Inst.0.0.lrldlb-rev · U.S. Army Corps of Engineers Access to Water data |
| Datum | NGVD29 — 733 ft is the district's top of conservation pool figure, in the same NGVD29 datum as the gauge. |
| Last verified | August 20, 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 William H. Harsha Lake right now?
William H. Harsha Lake is at 733.13 ft (NGVD29) as of August 20, 2026 — 0.1 ft above full pool — typical for mid-August
Is William H. Harsha Lake full?
Yes and then some — at 733.13 ft, William H. Harsha Lake is 0.1 ft above its full pool of 733.00 ft (NGVD29), using flood storage.
What is full pool for William H. Harsha Lake?
Full pool (the conservation pool) for William H. Harsha Lake is 733.00 ft NGVD29, per USACE Louisville District full-pool reference. Levels above it use flood storage; levels below it are drawdown.