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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9 USGS gauges near your location (within 30 miles)

Yaak River near Troy MT

USGS 12304500

Caution: Low water: go quiet and stealthy

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

Discharge: 91.6 ft³/s
Gauge height: 2.93 ft

Much below normal for Nov 5 Steady · 24 h Below NWS action stage

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, 5:45 PM MST	91.6	2.93
Nov 5, 4:45 PM MST	91.6	2.93
Nov 5, 3:45 PM MST	91.6	2.93
Nov 5, 2:45 PM MST	91.6	2.93
Nov 5, 1:45 PM MST	91.6	2.93
Nov 5, 12:45 PM MST	91.6	2.93
Nov 5, 11:45 AM MST	91.6	2.93
Nov 5, 10:45 AM MST	91.6	2.93
Nov 5, 9:45 AM MST	91.6	2.93
Nov 5, 8:45 AM MST	91.6	2.93
Nov 5, 7:45 AM MST	91.6	2.93
Nov 5, 6:45 AM MST	91.6	2.93
Nov 5, 5:45 AM MST	91.6	2.93
Nov 5, 4:45 AM MST	91.6	2.93
Nov 5, 3:45 AM MST	93.8	2.94
Nov 5, 2:45 AM MST	91.6	2.93
Nov 5, 1:45 AM MST	91.6	2.93
Nov 5, 12:45 AM MST	91.6	2.93
Nov 4, 11:45 PM MST	93.8	2.94
Nov 4, 10:45 PM MST	93.8	2.94
Nov 4, 9:45 PM MST	93.8	2.94
Nov 4, 8:45 PM MST	93.8	2.94
Nov 4, 7:45 PM MST	93.8	2.94
Nov 4, 6:45 PM MST	93.8	2.94
Nov 4, 5:45 PM MST	93.8	2.94
Nov 4, 4:45 PM MST	93.8	2.94
Nov 4, 3:45 PM MST	93.8	2.94

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

Open full screen USGS NWS

On our page for Yaak River

12 miles away in a straight line

KOOTENAI RIVER AT LEONIA, ID

USGS 12305000

Good: Good trout conditions: fish normally

The full view adds the NWS forecast.

Discharge: 7,060 ft³/s
Gauge height: 11.8 ft
Water temp: 51.3°F

Normal for Nov 5 Falling · 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, 4:15 PM PST	7,060	11.8	51.3
Nov 5, 3:15 PM PST	7,100	11.8	51.1
Nov 5, 2:15 PM PST	7,180	11.9	51.1
Nov 5, 1:15 PM PST	7,300	11.9	51.1
Nov 5, 12:15 PM PST	7,540	12	51.3
Nov 5, 11:15 AM PST	7,820	12.2	51.3
Nov 5, 10:15 AM PST	8,200	12.4	51.3
Nov 5, 9:15 AM PST	8,710	12.6	51.4
Nov 5, 8:15 AM PST	9,090	12.8	51.4
Nov 5, 7:15 AM PST	9,380	12.9	51.6
Nov 5, 6:15 AM PST	9,550	13	51.6
Nov 5, 5:15 AM PST	9,600	13	51.6
Nov 5, 4:15 AM PST	9,600	13	51.6
Nov 5, 3:15 AM PST	9,660	13	51.8
Nov 5, 2:15 AM PST	9,710	13.1	51.8
Nov 5, 1:15 AM PST	9,770	13.1	51.8
Nov 5, 12:15 AM PST	9,710	13.1	51.8
Nov 4, 11:15 PM PST	9,660	13	51.8
Nov 4, 10:15 PM PST	9,710	13.1	51.8
Nov 4, 9:15 PM PST	9,640	13	51.8
Nov 4, 8:15 PM PST	9,660	13	52
Nov 4, 7:15 PM PST	9,690	13	52
Nov 4, 6:15 PM PST	9,660	13	52
Nov 4, 5:15 PM PST	9,690	13	52.2
Nov 4, 4:15 PM PST	9,820	13.1	52.2
Nov 4, 3:15 PM PST	9,840	13.1	52.2
Nov 4, 2:15 PM PST	9,910	13.1	52.2

Kootenai River bl Libby Dam nr Libby MT

USGS 12301933

Limited data: Normal flow for the date: no water temperature here

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

Discharge: 6,630 ft³/s
Gauge height: 19 ft

Normal for Nov 5 Falling · 24 h Below NWS action stage

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	6,630	19
Nov 5, 5:00 PM MST	6,630	19
Nov 5, 4:00 PM MST	6,630	19
Nov 5, 3:00 PM MST	6,610	19
Nov 5, 2:00 PM MST	6,630	19
Nov 5, 1:00 PM MST	6,630	19
Nov 5, 12:00 PM MST	6,630	19
Nov 5, 11:00 AM MST	6,610	19
Nov 5, 10:00 AM MST	6,630	19
Nov 5, 9:00 AM MST	6,580	19
Nov 5, 8:00 AM MST	6,580	19
Nov 5, 7:00 AM MST	6,630	19
Nov 5, 6:00 AM MST	6,610	19
Nov 5, 5:00 AM MST	6,610	19
Nov 5, 4:00 AM MST	6,580	19
Nov 5, 3:00 AM MST	6,630	19
Nov 5, 2:00 AM MST	7,120	19.2
Nov 5, 1:00 AM MST	7,250	19.2
Nov 5, 12:00 AM MST	8,190	19.6
Nov 4, 11:00 PM MST	8,660	19.7
Nov 4, 10:00 PM MST	9,040	19.9
Nov 4, 9:00 PM MST	9,040	19.9
Nov 4, 8:00 PM MST	9,040	19.9
Nov 4, 7:00 PM MST	9,100	19.9
Nov 4, 6:00 PM MST	9,140	19.9
Nov 4, 5:00 PM MST	9,200	19.9
Nov 4, 4:00 PM MST	9,170	19.9

Fisher River near Libby MT

USGS 12302055

Caution: Low water: go quiet and stealthy

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

Discharge: 76 ft³/s
Gauge height: 2.8 ft

Lowest for this date on record for Nov 5 Steady · 24 h Below NWS action stage

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, 4:45 PM MST	76	2.8
Nov 5, 3:45 PM MST	76	2.8
Nov 5, 2:45 PM MST	76	2.8
Nov 5, 1:45 PM MST	76	2.8
Nov 5, 12:45 PM MST	76	2.8
Nov 5, 11:45 AM MST	76	2.8
Nov 5, 10:45 AM MST	76	2.8
Nov 5, 9:45 AM MST	76	2.8
Nov 5, 8:45 AM MST	76	2.8
Nov 5, 7:45 AM MST	76	2.8
Nov 5, 6:45 AM MST	76	2.8
Nov 5, 5:45 AM MST	76	2.8
Nov 5, 4:45 AM MST	76	2.8
Nov 5, 3:45 AM MST	76	2.8
Nov 5, 2:45 AM MST	76	2.8
Nov 5, 1:45 AM MST	76	2.8
Nov 5, 12:45 AM MST	76	2.8
Nov 4, 11:45 PM MST	76	2.8
Nov 4, 10:45 PM MST	76	2.8
Nov 4, 9:45 PM MST	76	2.8
Nov 4, 8:45 PM MST	76	2.8
Nov 4, 7:45 PM MST	76	2.8
Nov 4, 6:45 PM MST	76	2.8
Nov 4, 5:45 PM MST	76	2.8
Nov 4, 4:45 PM MST	76	2.8
Nov 4, 3:45 PM MST	76	2.8
Nov 4, 2:45 PM MST	76	2.8

LIGHTNING CREEK AT CLARK FORK ID

USGS 12392155

Caution: Low water: go quiet and stealthy

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

Discharge: 10 ft³/s
Gauge height: 8.31 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, 4:45 PM PST	10	8.31
Nov 5, 3:45 PM PST	10	8.31
Nov 5, 2:45 PM PST	10	8.31
Nov 5, 1:45 PM PST	10	8.31
Nov 5, 12:45 PM PST	10.3	8.32
Nov 5, 11:45 AM PST	10.6	8.33
Nov 5, 10:45 AM PST	10.3	8.32
Nov 5, 9:45 AM PST	10.3	8.32
Nov 5, 8:45 AM PST	10	8.31
Nov 5, 7:45 AM PST	10	8.31
Nov 5, 6:45 AM PST	10	8.31
Nov 5, 5:45 AM PST	10.3	8.32
Nov 5, 4:45 AM PST	10	8.31
Nov 5, 3:45 AM PST	10	8.31
Nov 5, 2:45 AM PST	10	8.31
Nov 5, 1:45 AM PST	10.3	8.32
Nov 5, 12:45 AM PST	10.3	8.32
Nov 4, 11:45 PM PST	10.3	8.32
Nov 4, 10:45 PM PST	10.3	8.32
Nov 4, 9:45 PM PST	10.6	8.33
Nov 4, 8:45 PM PST	10.3	8.32
Nov 4, 7:45 PM PST	10.3	8.32
Nov 4, 6:45 PM PST	10.3	8.32
Nov 4, 5:45 PM PST	10.6	8.33
Nov 4, 4:45 PM PST	10.9	8.34
Nov 4, 3:45 PM PST	10.6	8.33
Nov 4, 2:45 PM PST	10.6	8.33

CLARK FORK RIVER BELOW CABINET GORGE DAM ID

USGS 12391950

Limited data: Normal flow for the date: no water temperature here

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

Discharge: 14,400 ft³/s
Gauge height: 10.3 ft

Above normal for Nov 5 Falling · 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, 4:45 PM PST	14,400	10.3
Nov 5, 3:45 PM PST	5,590	7.45
Nov 5, 2:45 PM PST	3,710	6.7
Nov 5, 1:45 PM PST	3,740	6.71
Nov 5, 12:45 PM PST	4,010	6.83
Nov 5, 11:45 AM PST	4,790	7.15
Nov 5, 10:45 AM PST	7,200	8.05
Nov 5, 9:45 AM PST	8,110	8.38
Nov 5, 8:45 AM PST	9,250	8.76
Nov 5, 7:45 AM PST	13,800	10.1
Nov 5, 6:45 AM PST	10,600	9.18
Nov 5, 5:45 AM PST	4,320	6.96
Nov 5, 4:45 AM PST	4,250	6.93
Nov 5, 3:45 AM PST	4,320	6.96
Nov 5, 2:45 AM PST	4,370	6.98
Nov 5, 1:45 AM PST	4,850	7.17
Nov 5, 12:45 AM PST	5,220	7.31
Nov 4, 11:45 PM PST	6,690	7.86
Nov 4, 10:45 PM PST	10,400	9.12
Nov 4, 9:45 PM PST	14,800	10.3
Nov 4, 8:45 PM PST	18,000	11.1
Nov 4, 7:45 PM PST	18,300	11.2
Nov 4, 6:45 PM PST	18,000	11.1
Nov 4, 5:45 PM PST	18,900	11.3
Nov 4, 4:45 PM PST	17,000	10.9
Nov 4, 3:45 PM PST	8,140	8.39
Nov 4, 2:45 PM PST	6,770	7.89

KOOTENAI RIVER BEL MOYIE RIVER NR BONNERS FERRY ID

USGS 12308000

Limited data: Normal flow for the date: no water temperature here

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

Discharge: 7,870 ft³/s
Gauge height: 72.5 ft

Normal for Nov 5 Falling · 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, 4:30 PM PST	7,870	72.5
Nov 5, 3:30 PM PST	8,070	72.5
Nov 5, 2:30 PM PST	8,600	72.7
Nov 5, 1:30 PM PST	8,880	72.8
Nov 5, 12:30 PM PST	9,190	72.9
Nov 5, 11:30 AM PST	9,480	72.9
Nov 5, 10:30 AM PST	9,730	73
Nov 5, 9:30 AM PST	10,200	73.1
Nov 5, 8:30 AM PST	10,200	73.1
Nov 5, 7:30 AM PST	10,400	73.2
Nov 5, 6:30 AM PST	10,400	73.2
Nov 5, 5:30 AM PST	10,100	73.1
Nov 5, 4:30 AM PST	10,200	73.2
Nov 5, 3:30 AM PST	10,500	73.2
Nov 5, 2:30 AM PST	10,500	73.2
Nov 5, 1:30 AM PST	10,400	73.2
Nov 5, 12:30 AM PST	10,400	73.2
Nov 4, 11:30 PM PST	10,300	73.2
Nov 4, 10:30 PM PST	10,200	73.2
Nov 4, 9:30 PM PST	10,500	73.2
Nov 4, 8:30 PM PST	10,300	73.2
Nov 4, 7:30 PM PST	10,200	73.2
Nov 4, 6:30 PM PST	10,500	73.2
Nov 4, 5:30 PM PST	10,500	73.2
Nov 4, 4:30 PM PST	10,800	73.3
Nov 4, 3:30 PM PST	10,500	73.2
Nov 4, 2:30 PM PST	11,100	73.4

Libby Wetland Site bl Schrieber Lake nr Libby, MT
USGS 480608115242901
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS
28.9 miles away in a straight line

KOOTENAI RIVER AT BONNERS FERRY ID

USGS 12309500

Limited data: Trout-friendly temperature: no flow comparison here

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

Gauge height: 46.7 ft
Water temp: 51.1°F

No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it reports what is shown. Flow on the same river: KOOTENAI RIVER BEL MOYIE RIVER NR BONNERS FERRY ID (USGS 12308000, 5.3 miles away).

Falling · 24 h Below NWS action stage

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)	Water temp (°F)
Nov 5, 4:15 PM PST	46.7	51.1
Nov 5, 3:15 PM PST	46.8	51.1
Nov 5, 2:15 PM PST	46.9	51.1
Nov 5, 1:15 PM PST	47	51.1
Nov 5, 12:15 PM PST	47.1	51.1
Nov 5, 11:15 AM PST	47.2	50.9
Nov 5, 10:15 AM PST	47.2	50.9
Nov 5, 9:15 AM PST	47.2	50.9
Nov 5, 8:15 AM PST	47.2	50.9
Nov 5, 7:15 AM PST	47.2	50.9
Nov 5, 6:15 AM PST	47.3	50.9
Nov 5, 5:15 AM PST	47.3	50.9
Nov 5, 4:15 AM PST	47.3	50.9
Nov 5, 3:15 AM PST	47.3	50.9
Nov 5, 2:15 AM PST	47.3	50.9
Nov 5, 1:15 AM PST	47.3	50.9
Nov 5, 12:15 AM PST	47.4	50.9
Nov 4, 11:15 PM PST	47.4	50.9
Nov 4, 10:15 PM PST	47.4	51.1
Nov 4, 9:15 PM PST	47.5	51.1
Nov 4, 8:15 PM PST	47.6	51.1
Nov 4, 7:15 PM PST	47.6	51.3
Nov 4, 6:15 PM PST	47.7	51.4
Nov 4, 5:15 PM PST	47.8	51.6
Nov 4, 4:15 PM PST	48	51.6
Nov 4, 3:15 PM PST	48.2	51.6
Nov 4, 2:15 PM PST	48.3	51.6

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.

Yaak River near Troy MT
USGS 12304500 · MT · live flow · gauge height · 12 mi
Reading the gauge…
KOOTENAI RIVER AT LEONIA, ID
USGS 12305000 · ID · live flow · gauge height · water temperature · 17.2 mi
Reading the gauge…
Kootenai River bl Libby Dam nr Libby MT
USGS 12301933 · MT · live flow · gauge height · 22.9 mi
Reading the gauge…
Fisher River near Libby MT
USGS 12302055 · MT · live flow · gauge height · 23.5 mi
Reading the gauge…
LIGHTNING CREEK AT CLARK FORK ID
USGS 12392155 · ID · live flow · gauge height · 25 mi
Reading the gauge…
CLARK FORK RIVER BELOW CABINET GORGE DAM ID
USGS 12391950 · ID · live flow · gauge height · 25.8 mi
Reading the gauge…
KOOTENAI RIVER BEL MOYIE RIVER NR BONNERS FERRY ID
USGS 12308000 · ID · live flow · gauge height · 25.9 mi
Reading the gauge…
Libby Wetland Site bl Schrieber Lake nr Libby, MT
USGS 480608115242901 · MT · live flow · gauge height · 28.9 mi
Reading the gauge…
KOOTENAI RIVER AT BONNERS FERRY ID
USGS 12309500 · ID · no flow · gauge height · water temperature · 29.7 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.