A small USGS stream gaging station with an antenna on its roof under a cloudy evening sky

Check a river’s flow.

Search any USGS stream gauge by river or station name, by state, or near you. Each card shows the latest flow and how it compares with the normal range for today’s date; open a gauge for the full picture: trend, water temperature and what it means for trout, safety and the official NWS flood stage.

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4 USGS gauges near your location (within 30 miles)

Tongue River at State Line nr Decker MT

USGS 06306300

Caution: Low water: go quiet and stealthy

The full view adds the NWS forecast.

Discharge: 137 ft³/s
Gauge height: 2.39 ft
Water temp: 43.3°F

Much below normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)	Water temp (°F)
Nov 5, 5:15 PM MST	137	2.39	43.3
Nov 5, 4:15 PM MST	134	2.38	43.3
Nov 5, 3:15 PM MST	134	2.38	43
Nov 5, 2:15 PM MST	134	2.38	42.4
Nov 5, 1:15 PM MST	134	2.38	41.5
Nov 5, 12:15 PM MST	134	2.38	40.3
Nov 5, 11:15 AM MST	134	2.38	39.2
Nov 5, 10:15 AM MST	134	2.38	38.5
Nov 5, 9:15 AM MST	132	2.37	37.9
Nov 5, 8:15 AM MST	132	2.37	37.9
Nov 5, 7:15 AM MST	132	2.37	38.1
Nov 5, 6:15 AM MST	132	2.37	38.5
Nov 5, 5:15 AM MST	132	2.37	38.8
Nov 5, 4:15 AM MST	132	2.37	39.4
Nov 5, 3:15 AM MST	134	2.38	39.9
Nov 5, 2:15 AM MST	137	2.39	40.3
Nov 5, 1:15 AM MST	137	2.39	40.6
Nov 5, 12:15 AM MST	137	2.39	41.2
Nov 4, 11:15 PM MST	139	2.4	41.7
Nov 4, 10:15 PM MST	139	2.4	42.3
Nov 4, 9:15 PM MST	139	2.4	42.6
Nov 4, 8:15 PM MST	139	2.4	43.2
Nov 4, 7:15 PM MST	139	2.4	43.3
Nov 4, 6:15 PM MST	139	2.4	43.5
Nov 4, 5:15 PM MST	139	2.4	43.9
Nov 4, 4:15 PM MST	139	2.4	43.9
Nov 4, 3:15 PM MST	139	2.4	43.9

Reading Nov 5, 5:15 PM MST · checked 6:20 PM MST

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On our page for Tongue River

23.1 miles away in a straight line

Little Bighorn River at State Line nr Wyola MT

USGS 06289000

Caution: Low water: go quiet and stealthy

No water temperature here. The full view adds the NWS forecast.

Discharge: 60 ft³/s
Gauge height: 1.94 ft

Much below normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 6:00 PM MST	60	1.94
Nov 5, 5:00 PM MST	61.6	1.95
Nov 5, 4:00 PM MST	60	1.94
Nov 5, 3:00 PM MST	60	1.94
Nov 5, 2:00 PM MST	61.6	1.95
Nov 5, 1:00 PM MST	61.6	1.95
Nov 5, 12:00 PM MST	63.1	1.96
Nov 5, 11:00 AM MST	63.1	1.96
Nov 5, 10:00 AM MST	64.7	1.97
Nov 5, 9:00 AM MST	64.7	1.97
Nov 5, 8:00 AM MST	66.3	1.98
Nov 5, 7:00 AM MST	67.9	1.99
Nov 5, 6:00 AM MST	67.9	1.99
Nov 5, 5:00 AM MST	71.2	2.01
Nov 5, 4:00 AM MST	71.2	2.01
Nov 5, 3:00 AM MST	71.2	2.01
Nov 5, 2:00 AM MST	74.6	2.03
Nov 5, 1:00 AM MST	72.9	2.02
Nov 5, 12:00 AM MST	69.5	2
Nov 4, 11:00 PM MST	67.9	1.99
Nov 4, 10:00 PM MST	67.9	1.99
Nov 4, 9:00 PM MST	60	1.94
Nov 4, 8:00 PM MST	58.5	1.93
Nov 4, 7:00 PM MST	57.1	1.92
Nov 4, 6:00 PM MST	57.1	1.92
Nov 4, 5:00 PM MST	58.5	1.93
Nov 4, 4:00 PM MST	58.5	1.93

Little Bighorn R bl Pass Cr nr Wyola MT

USGS 06290500

Limited data: Not enough data: no water temperature or flow statistics here

No water temperature, flow statistics here.

Gauge height: 1.32 ft

Steady · 24 h

Last 24 hours

View data as a table

Gauge height, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Gauge height (ft)
Nov 5, 5:45 PM MST	1.32
Nov 5, 4:45 PM MST	1.33
Nov 5, 3:45 PM MST	1.33
Nov 5, 2:45 PM MST	1.33
Nov 5, 1:45 PM MST	1.32
Nov 5, 12:45 PM MST	1.32
Nov 5, 11:45 AM MST	1.3
Nov 5, 10:45 AM MST	1.29
Nov 5, 9:45 AM MST	1.29
Nov 5, 8:45 AM MST	1.27
Nov 5, 7:45 AM MST	1.28
Nov 5, 6:45 AM MST	1.28
Nov 5, 5:45 AM MST	1.28
Nov 5, 4:45 AM MST	1.28
Nov 5, 3:45 AM MST	1.28
Nov 5, 2:45 AM MST	1.29
Nov 5, 1:45 AM MST	1.29
Nov 5, 12:45 AM MST	1.3
Nov 4, 11:45 PM MST	1.31
Nov 4, 10:45 PM MST	1.31
Nov 4, 9:45 PM MST	1.32
Nov 4, 8:45 PM MST	1.32
Nov 4, 7:45 PM MST	1.32
Nov 4, 6:45 PM MST	1.32
Nov 4, 5:45 PM MST	1.33
Nov 4, 4:45 PM MST	1.33
Nov 4, 3:45 PM MST	1.33

Reading Nov 5, 5:45 PM MST · checked 6:20 PM MST

Lodge Grass Cr ab Willow Cr diversion, nr Wyola MT

USGS 06291500

Limited data: Not enough data: no water temperature or flow statistics here

No water temperature, flow statistics here. The full view adds the NWS forecast.

Gauge height: 1.51 ft

No flow here now. USGS stopped publishing discharge at this gauge on Sep 30, 2009; it still reports what is shown. We found no other gauge on the same river that publishes flow.

Steady · 24 h

Last 24 hours

View data as a table

Gauge height, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Gauge height (ft)
Nov 5, 5:15 PM MST	1.51
Nov 5, 4:15 PM MST	1.51
Nov 5, 3:15 PM MST	1.52
Nov 5, 2:15 PM MST	1.51
Nov 5, 1:15 PM MST	1.52
Nov 5, 12:15 PM MST	1.51
Nov 5, 11:15 AM MST	1.51
Nov 5, 10:15 AM MST	1.52
Nov 5, 9:15 AM MST	1.51
Nov 5, 8:15 AM MST	1.51
Nov 5, 7:15 AM MST	1.51
Nov 5, 6:15 AM MST	1.51
Nov 5, 5:15 AM MST	1.51
Nov 5, 4:15 AM MST	1.5
Nov 5, 3:15 AM MST	1.51
Nov 5, 2:15 AM MST	1.5
Nov 5, 1:15 AM MST	1.51
Nov 5, 12:15 AM MST	1.51
Nov 4, 11:15 PM MST	1.51
Nov 4, 10:15 PM MST	1.5
Nov 4, 9:15 PM MST	1.51
Nov 4, 8:15 PM MST	1.51
Nov 4, 7:15 PM MST	1.51
Nov 4, 6:15 PM MST	1.51
Nov 4, 5:15 PM MST	1.51
Nov 4, 4:15 PM MST	1.51
Nov 4, 3:15 PM MST	1.52

Reading Nov 5, 5:15 PM MST · checked 6:20 PM MST

Checked Nov 5, 6:20 PM MST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.

Tongue River at State Line nr Decker MT
USGS 06306300 · MT · live flow · gauge height · water temperature · 23.1 mi
Reading the gauge…
Little Bighorn River at State Line nr Wyola MT
USGS 06289000 · MT · live flow · gauge height · 24 mi
Reading the gauge…
Little Bighorn R bl Pass Cr nr Wyola MT
USGS 06290500 · MT · live flow · gauge height · 27 mi
Reading the gauge…
Lodge Grass Cr ab Willow Cr diversion, nr Wyola MT
USGS 06291500 · MT · flow record ended · gauge height · 28.9 mi
Reading the gauge…

Quick picks: our 2,852 waters by state

Each state opens its USGS gauges and our water pages there; a water opens the live cards for its gauges, or the NOAA tides for flats and surf.

Search covers 11,178 USGS stream gauges that reported discharge, gauge height or water temperature in the 183 days before 2026-10-23 (USGS series catalog); readings are fetched live when a gauge is shown.

Where these numbers come from

Discharge, gauge height, water temperature and water quality: U.S. Geological Survey readings (provisional, can be revised), cached for 15 minutes. Where USGS publishes a gauge’s flow only once a day, the latest daily mean is shown with its date.
Normal range: the 25th to 75th percentile of daily mean flow for the same calendar day over the gauge’s record (USGS daily statistics), classed as USGS does (hyswap).
Temperature guidance for trout quotes the gauge’s own state fish and wildlife agency; where we found none, it says so and quotes federal guidance (National Park Service, U.S. Fish and Wildlife Service). Cold-water safety quotes the NWS; dissolved oxygen and pH are read against EPA criteria. Each line names its source.
Flood stage and forecasts: the National Weather Service’s National Water Prediction Service and its Turn Around Don’t Drown guidance. Tides: NOAA Tides & Currents.

General guidance, not a fishing forecast, a safety guarantee or a statement about access. Planning a trip? The trip planner shows these readings on every day you fish a water.