lakedates.com

Kansas · USACE Tulsa District

Marion Reservoir water level

Today's reading against full pool and Marion Reservoir's own seasonal history.

Searched “Marion lake level” or “lake level for Marion Reservoir”? Same lake, same reading — you're in the right place. The current reading is right here too, whether you typed “current Marion Reservoir water level” or “current water level at Marion Reservoir”.

FULL POOL 1346 1348 1350
Elevation, feet (NAVD88)

as of October 1, 2026

1350.04 ft NAVD88

level 0.5 ft below full pool — typical for early October

Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE lake gauge) and updates live when you load this page.

Is Marion Reservoir full?

Not quite — 0.5 ft below full pool as of October 1, 2026

How full is Marion Reservoir? 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.

Marion 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.

full pool 1348 1350 1352 1354 JFMAMJJASOND
Median and normal range by day of year, 2015–2026 · elevation, feet (NAVD88)

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.

full pool 1345 1350 1355 JFMAMJJASOND
  • 2026 (this year)
  • 2025 (last year)
  • 2019 (wettest on record)
  • 2023 (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 1350.50 ft NAVD88 · per USACE Tulsa District full-pool reference
Conservation capacity 76,837 acre-feet · per USACE Tulsa District capacity reference
Gauge USACE lake gauge · U.S. Army Corps of Engineers Access to Water data
Datum NAVD88 — 1350.5 ft is the district's top of conservation pool figure, in the same NAVD88 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

What is the lake level for Marion Reservoir today?

Marion Reservoir is at 1350.04 ft (NAVD88) as of October 1, 2026 — 0.5 ft below full pool — typical for early October.

Is Marion Reservoir full?

Not quite — at 1350.04 ft on October 1, 2026, Marion Reservoir is 0.5 ft below its full pool of 1350.50 ft (NAVD88).

How full is Marion Reservoir?

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 Marion Reservoir?

Full pool (the conservation pool) for Marion Reservoir is 1350.50 ft NAVD88, per USACE Tulsa District full-pool reference. Levels above it use flood storage; levels below it are drawdown.