4085.29 ft USBR project datum
level 14.0 ft below full pool — typical for mid-August
Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series KEYO.Elev.Inst.1Hour.0.Best-NWO) and updates live when you load this page.
Keyhole Reservoir through the year
The band is the lake's own normal: where the level has run on each calendar day, 1990–2026. 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.
- 2015 (wettest on record)
- 1992 (driest on record)
- 2025 (last year)
- 2026 (this 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 | 4099.30 ft USBR project datum · per US Bureau of Reclamation (Keyhole Dam) full-pool reference |
|---|---|
| Conservation capacity | 188,669 acre-feet · per US Bureau of Reclamation (Keyhole Dam) capacity reference |
| Gauge | USACE series KEYO.Elev.Inst.1Hour.0.Best-NWO · U.S. Army Corps of Engineers Access to Water data |
| Datum | USBR project datum — 4099.3 = top of active conservation (also spillway crest); confirmed identically by USBR project page and USACE CDA levels. |
| 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 Keyhole Reservoir right now?
Keyhole Reservoir is at 4085.29 ft (USBR project datum) as of August 15, 2026 — 14.0 ft below full pool — typical for mid-August
Is Keyhole Reservoir full?
Not quite — at 4085.29 ft, Keyhole Reservoir is 14.0 ft below its full pool of 4099.30 ft (USBR project datum).
What is full pool for Keyhole Reservoir?
Full pool (the conservation pool) for Keyhole Reservoir is 4099.30 ft USBR project datum, per US Bureau of Reclamation (Keyhole Dam) full-pool reference. Levels above it use flood storage; levels below it are drawdown.