North Fork John Day River Water Levels at Thumbtack Reservoir, OR - Live MONO3 Gauge & Flood Status

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12' - Action	14' - Flood	Moderate Flood	Major Flood

North Fork John Day River - Gauge MONO3
Monument, OR
Lat: 44.81N, Lon: 119.43W

Latest Observation
Updated: 6:30 AM PDT 10/16/25

Stage:	2.56 ft
Flow:	0.128 kcfs*
* Thousand cubic feet per second

Forecast

Observation History Hydrograph Flood Impacts Historical Events

hydrograph

Flood Impacts

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Data provided by NOAA Advanced Hydrologic Prediction Service