South Dakota · Bureau of Reclamation (Pactola Dam)

Pactola Reservoir water level

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

FULL POOL 4550 4560 4570 4580
Elevation, feet (project datum)

as of August 20, 2026

4559.75 ft project datum

level 20.4 ft below full pool — on the low side for mid-August

Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series PACA.Elev.Inst.1Hour.0.Best-NWO) and updates live when you load this page.


Pactola 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.

full pool 4550 4560 4570 4580 JFMAMJJASOND
Median and normal range by day of year, 1990–2026 · elevation, feet (project datum)

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 4500 4520 4540 4560 4580 JFMAMJJASOND
  • 2026 (this year)
  • 2025 (last year)
  • 1996 (wettest on record)
  • 1991 (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 4580.20 ft project datum · per Bureau of Reclamation (Pactola Dam) full-pool reference
Conservation capacity 55,975 acre-feet · per Bureau of Reclamation (Pactola Dam) capacity reference
Gauge USACE series PACA.Elev.Inst.1Hour.0.Best-NWO · U.S. Army Corps of Engineers Access to Water data
Datum project datum — The district publishes the gauge and the top of conservation pool figure in the project's own datum, so the two compare like for like.
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

How full is Pactola Reservoir right now?

Pactola Reservoir is at 4559.75 ft (project datum) as of August 20, 2026 — 20.4 ft below full pool — on the low side for mid-August

Is Pactola Reservoir full?

Not quite — at 4559.75 ft, Pactola Reservoir is 20.4 ft below its full pool of 4580.20 ft (project datum).

What is full pool for Pactola Reservoir?

Full pool (the conservation pool) for Pactola Reservoir is 4580.20 ft project datum, per Bureau of Reclamation (Pactola Dam) full-pool reference. Levels above it use flood storage; levels below it are drawdown.