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Nolin River at Kyrock, KY Water Level Today

Kentucky · USGS gauge 03311000 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 03311000 sits on the Nolin River and reads everything draining 703 square miles of the Upper Green basin. Only 480 square miles of that contributes flow in a normal year; the rest is closed basin that does not drain to the river. Its datum sits 400 feet above sea level NAVD88. Daily flow is on record here from 1964 to 2004, 41 years in all.

Where this gauge sits in the drainage

No gauged site sits above this one on the mainstem, so this is the first published reading on the river. Downstream the next reading comes from Green River at Hwy 259 at Brownsville, KY at 2,762 square miles, so what passes this gauge is about 25% of the water measured there. Water passing here goes on to Green River at Lock 4 at Woodbury, KY.

Normal flows here

The Nolin River runs a median of 478 cfs at this gauge across 41 years of record. November is the fullest month at a median 1,220 cfs, and April the leanest at 102 cfs. The highest daily mean on record is 10,300 cfs in 1983, and the lowest is 0.0 cfs in 1966.

Median flow by month
MonthMedian flowShare of annual median
Jan764 cfs160%
Feb920 cfs192%
Mar475 cfs99%
Apr102 cfs21%
May533 cfs112%
Jun358 cfs75%
Jul266 cfs56%
Aug198 cfs41%
Sep268 cfs56%
Oct968 cfs203%
Nov1,220 cfs255%
Dec663 cfs139%

Medians from the USGS daily-statistics record, 1964 to 2004. A month at 100% is running at its own long-term median. USGS stopped publishing a daily flow record at this gauge, so these are historical norms, not a baseline for current readings.

Nearby river gauges

Live streamflow and gage height: USGS gauge 03311000. Percentile context computed against the gauge's period of record. Not for navigation.

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