776.52 ft NAVD88
level Current reading shown; this gauge's public record is too short for seasonal comparisons.
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 05427235) and updates live when you load this page.
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.
- 2026 (this year)
- 2025 (last year)
- 2020 (wettest on record)
- 2021 (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 | not published by the operator |
|---|---|
| Gauge | USGS gauge 05427235 · U.S. Geological Survey National Water Information System |
| Datum | NAVD88 |
| 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 Lake Koshkonong right now?
Lake Koshkonong is at 776.52 ft (NAVD88) as of August 19, 2026 — Current reading shown; this gauge's public record is too short for seasonal comparisons.
Is Lake Koshkonong full?
Rock-Koshkonong Lake District (Indianford Dam) doesn't publish a conservation-pool figure for Lake Koshkonong, so this page shows the latest reading straight from the gauge.
What is full pool for Lake Koshkonong?
Rock-Koshkonong Lake District (Indianford Dam) doesn't publish a single conservation-pool elevation for Lake Koshkonong. The reading above comes straight from the operator's gauge.