5432.96 ft USACE project datum
level 1.0 ft above full pool — unusually high for mid-August
Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series CHFI.Elev.Inst.1Hour.0.Best-NWO) and updates live when you load this page.
Chatfield 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.
- 2024 (wettest on record)
- 2004 (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 | 5432.00 ft USACE project datum · per USACE Omaha District full-pool reference |
|---|---|
| Gauge | USACE series CHFI.Elev.Inst.1Hour.0.Best-NWO · U.S. Army Corps of Engineers Access to Water data |
| Datum | USACE project datum — NOTE: Omaha District data lives under office=NWDM (not NWO) in CWMS; series names are 4-letter codes. Multipurpose pool top ('Bottom of Flood Control') 5,432.0 ft from location levels; reading can sit slightly above after storms. |
| 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 Chatfield Reservoir right now?
Chatfield Reservoir is at 5432.96 ft (USACE project datum) as of August 15, 2026 — 1.0 ft above full pool — unusually high for mid-August
Is Chatfield Reservoir full?
Yes and then some — at 5432.96 ft, Chatfield Reservoir is 1.0 ft above its full pool of 5432.00 ft (USACE project datum), using flood storage.
What is full pool for Chatfield Reservoir?
Full pool (the conservation pool) for Chatfield Reservoir is 5432.00 ft USACE project datum, per USACE Omaha District full-pool reference. Levels above it use flood storage; levels below it are drawdown.