399.57 ft project datum (Entergy 400-ft contour)
level 0.4 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 07358500) and updates live when you load this page.
Is Lake Hamilton full?
Not quite — 0.4 ft below full pool as of September 24, 2026
How full is Lake Hamilton? 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.
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 | 400.00 ft project datum (Entergy 400-ft contour) · per Entergy Arkansas (Carpenter Dam, FERC No. 271) full-pool reference |
|---|---|
| Gauge | USGS gauge 07358500 · U.S. Geological Survey National Water Information System |
| Datum | project datum (Entergy 400-ft contour) — Entergy publishes no explicit normal pool for Hamilton; the 400 ft figure is the project-boundary contour, and the lake is held very close to it year-round. |
| 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 Lake Hamilton today?
Lake Hamilton is at 399.57 ft (project datum (Entergy 400-ft contour)) as of September 24, 2026 — 0.4 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Lake Hamilton full?
Not quite — at 399.57 ft on September 24, 2026, Lake Hamilton is 0.4 ft below its full pool of 400.00 ft (project datum (Entergy 400-ft contour)).
How full is Lake Hamilton?
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 Lake Hamilton?
Full pool (the conservation pool) for Lake Hamilton is 400.00 ft project datum (Entergy 400-ft contour), per Entergy Arkansas (Carpenter Dam, FERC No. 271) full-pool reference. Levels above it use flood storage; levels below it are drawdown.