Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC). Fill % uses design capacity from the National Inventory of Dams where available; a few sites without a match fall back to the 5-year maximum.

About reservoirs in Kansas

As of July 30, 2026, the reservoirs we track across Kansas that report live levels hold roughly 5,154 hm³ of water — about 66.8% of their combined capacity. Taken together, Kansas's reservoirs are within their normal operating range.

Across the region, 2 reservoirs are at critically low levels and 7 are low. MILFORD LAKE NR JUNCTION CITY, KS is the fullest at 105.0%, while Webster Reservoir and Dam is the lowest at 15.4%.

Storage figures for Kansas come from USGS · USACE · BOR · CDEC; the most recent reading is from July 30, 2026. Each reservoir below links to its own page with full history and seasonal context.

Kansas at a glance

Reservoirs tracked: 33
Average fill: 66.8%
Water stored: 5,154 hm³
Combined capacity: 7,717 hm³
At critically low levels: 2
Fullest: MILFORD LAKE NR JUNCTION CITY, KS (105.0%)
Lowest: Webster Reservoir and Dam (15.4%)
Last updated: July 30, 2026

Frequently asked questions

How full are reservoirs in Kansas right now?

As of July 30, 2026, the reservoirs tracked in Kansas that report live levels are 66.8% full overall, holding about 5,154 hm³ of water.

How many reservoirs are there in Kansas?

reservoirs.earth tracks 33 reservoirs in Kansas, with a combined storage capacity of 7,717 hm³.

Which reservoir in Kansas is the fullest?

MILFORD LAKE NR JUNCTION CITY, KS is currently the fullest reservoir in Kansas, at 105.0% of capacity.

Which reservoir in Kansas is the lowest?

Webster Reservoir and Dam is currently the lowest in Kansas, at 15.4% of capacity.

Where does the reservoir data for Kansas come from?

All storage figures for Kansas come from USGS · USACE · BOR · CDEC, an official source, last updated July 30, 2026.

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