Iowa · USACE Rock Island District

Saylorville Lake water level

Today's reading against full pool and Saylorville Lake's own seasonal history.

FULL POOL 832 834 836 838 840
Elevation, feet (NGVD29)

as of August 15, 2026

837.62 ft NGVD29

level 1.6 ft above full pool — on the high side for mid-August

Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series SAYI4.Elev-Pool.Inst.30Minutes.0.rev) and updates live when you load this page.


Saylorville Lake through the year

The band is the lake's own normal: where the level has run on each calendar day, 2011–2026. The summer drawdown — and how this year sits in it — shows up without reading a single number.

full pool 840 860 880 JFMAMJJASOND
Median and normal range by day of year, 2011–2026 · elevation, feet (NGVD29)

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 840 860 880 JFMAMJJASOND
  • 2018 (wettest on record)
  • 2012 (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 836.00 ft NGVD29 · per USACE Rock Island District full-pool reference
Conservation capacity 73,600 acre-feet · per USACE Rock Island District capacity reference
Gauge USACE series SAYI4.Elev-Pool.Inst.30Minutes.0.rev · U.S. Army Corps of Engineers Access to Water data
Datum NGVD29 — Top of conservation 836.0 NGVD29.
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 Saylorville Lake right now?

Saylorville Lake is at 837.62 ft (NGVD29) as of August 15, 2026 — 1.6 ft above full pool — on the high side for mid-August

Is Saylorville Lake full?

Yes and then some — at 837.62 ft, Saylorville Lake is 1.6 ft above its full pool of 836.00 ft (NGVD29), using flood storage.

What is full pool for Saylorville Lake?

Full pool (the conservation pool) for Saylorville Lake is 836.00 ft NGVD29, per USACE Rock Island District full-pool reference. Levels above it use flood storage; levels below it are drawdown.