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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8 USGS gauges near your location (within 30 miles)

Swiftcurrent Creek at Many Glacier MT

USGS 05014500

Caution: Low water: go quiet and stealthy

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

Discharge: 19.4 ft³/s
Gauge height: 1.53 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, 5:30 PM MST	19.4	1.53
Nov 5, 4:30 PM MST	18.5	1.52
Nov 5, 3:30 PM MST	18.5	1.52
Nov 5, 2:30 PM MST	18.5	1.52
Nov 5, 1:30 PM MST	18.5	1.52
Nov 5, 12:30 PM MST	19.4	1.53
Nov 5, 11:30 AM MST	19.4	1.53
Nov 5, 10:30 AM MST	19.4	1.53
Nov 5, 9:30 AM MST	18.5	1.52
Nov 5, 8:30 AM MST	18.5	1.52
Nov 5, 7:30 AM MST	19.4	1.53
Nov 5, 6:30 AM MST	20.4	1.54
Nov 5, 5:30 AM MST	20.4	1.54
Nov 5, 4:30 AM MST	21.4	1.55
Nov 5, 3:30 AM MST	21.4	1.55
Nov 5, 2:30 AM MST	20.4	1.54
Nov 5, 1:30 AM MST	20.4	1.54
Nov 5, 12:30 AM MST	19.4	1.53
Nov 4, 11:30 PM MST	20.4	1.54
Nov 4, 10:30 PM MST	20.4	1.54
Nov 4, 9:30 PM MST	20.4	1.54
Nov 4, 8:30 PM MST	20.4	1.54
Nov 4, 7:30 PM MST	20.4	1.54
Nov 4, 6:30 PM MST	20.4	1.54
Nov 4, 5:30 PM MST	20.4	1.54
Nov 4, 4:30 PM MST	20.4	1.54
Nov 4, 3:30 PM MST	20.4	1.54

Reading Nov 5, 5:30 PM MST · checked 6:23 PM MST

Open full screen USGS NWS

1.5 miles away in a straight line

St. Mary River near Babb MT

USGS 05017500

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

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

Discharge: 105 ft³/s
Gauge height: 2 ft

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, 5:15 PM MST	105	2
Nov 5, 4:15 PM MST	103	1.99
Nov 5, 3:15 PM MST	108	2.01
Nov 5, 2:15 PM MST	114	2.03
Nov 5, 1:15 PM MST	108	2.01
Nov 5, 12:15 PM MST	97.2	1.97
Nov 5, 11:15 AM MST	103	1.99
Nov 5, 10:15 AM MST	99.9	1.98
Nov 5, 9:15 AM MST	103	1.99
Nov 5, 8:15 AM MST	97.2	1.97
Nov 5, 7:15 AM MST	94.6	1.96
Nov 5, 6:15 AM MST	97.2	1.97
Nov 5, 5:15 AM MST	97.2	1.97
Nov 5, 4:15 AM MST	99.9	1.98
Nov 5, 3:15 AM MST	103	1.99
Nov 5, 2:15 AM MST	99.9	1.98
Nov 5, 1:15 AM MST	99.9	1.98
Nov 5, 12:15 AM MST	103	1.99
Nov 4, 11:15 PM MST	99.9	1.98
Nov 4, 10:15 PM MST	99.9	1.98
Nov 4, 9:15 PM MST	99.9	1.98
Nov 4, 8:15 PM MST	99.9	1.98
Nov 4, 7:15 PM MST	97.2	1.97
Nov 4, 6:15 PM MST	99.9	1.98
Nov 4, 5:15 PM MST	99.9	1.98
Nov 4, 4:15 PM MST	99.9	1.98
Nov 4, 3:15 PM MST	99.9	1.98

St. Mary Canal at St. Mary Crossing near Babb MT
USGS 05018500
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS NWS
17.8 miles away in a straight line

McDonald Creek at Apgar, MT

USGS 12358000

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

No water temperature, flow statistics here.

Gauge height: 3.59 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, 5:00 PM MST	3.59
Nov 5, 4:00 PM MST	3.56
Nov 5, 3:00 PM MST	3.6
Nov 5, 2:00 PM MST	3.6
Nov 5, 1:00 PM MST	3.59
Nov 5, 12:00 PM MST	3.59
Nov 5, 11:00 AM MST	3.6
Nov 5, 10:00 AM MST	3.6
Nov 5, 9:00 AM MST	3.6
Nov 5, 8:00 AM MST	3.6
Nov 5, 7:00 AM MST	3.59
Nov 5, 6:00 AM MST	3.6
Nov 5, 5:00 AM MST	3.6
Nov 5, 4:00 AM MST	3.6
Nov 5, 3:00 AM MST	3.6
Nov 5, 2:00 AM MST	3.59
Nov 5, 1:00 AM MST	3.6
Nov 5, 12:00 AM MST	3.6
Nov 4, 11:00 PM MST	3.6
Nov 4, 10:00 PM MST	3.6
Nov 4, 9:00 PM MST	3.6
Nov 4, 8:00 PM MST	3.6
Nov 4, 7:00 PM MST	3.6
Nov 4, 6:00 PM MST	3.6
Nov 4, 5:00 PM MST	3.6
Nov 4, 4:00 PM MST	3.59
Nov 4, 3:00 PM MST	3.6

Reading Nov 5, 5:00 PM MST · checked 6:23 PM MST

St. Mary River at International Boundary

USGS 05020500

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

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

Discharge: 138 ft³/s
Gauge height: 3.52 ft

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, 6:10 PM MST	138	3.52
Nov 5, 5:15 PM MST	138	3.52
Nov 5, 4:20 PM MST	138	3.52
Nov 5, 3:25 PM MST	138	3.52
Nov 5, 2:30 PM MST	138	3.52
Nov 5, 1:35 PM MST	135	3.51
Nov 5, 12:40 PM MST	133	3.5
Nov 5, 11:45 AM MST	133	3.5
Nov 5, 10:50 AM MST	133	3.5
Nov 5, 9:55 AM MST	133	3.5
Nov 5, 9:00 AM MST	133	3.5
Nov 5, 8:05 AM MST	133	3.5
Nov 5, 7:10 AM MST	133	3.5
Nov 5, 6:15 AM MST	133	3.5
Nov 5, 5:20 AM MST	135	3.51
Nov 5, 4:25 AM MST	135	3.51
Nov 5, 3:30 AM MST	135	3.51
Nov 5, 2:35 AM MST	135	3.51
Nov 5, 1:40 AM MST	135	3.51
Nov 5, 12:45 AM MST	135	3.51
Nov 4, 11:50 PM MST	138	3.52
Nov 4, 10:55 PM MST	135	3.51
Nov 4, 10:00 PM MST	135	3.51
Nov 4, 9:05 PM MST	135	3.51
Nov 4, 8:10 PM MST	135	3.51
Nov 4, 7:15 PM MST	135	3.51
Nov 4, 6:20 PM MST	135	3.51
Nov 4, 5:25 PM MST	138	3.52
Nov 4, 4:30 PM MST	135	3.51

Middle Fork Flathead River at West Glacier, MT

USGS 12357500

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

No water temperature, flow statistics here.

Gauge height: 4.89 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, 5:00 PM MST	4.89
Nov 5, 4:00 PM MST	4.89
Nov 5, 3:00 PM MST	4.89
Nov 5, 2:00 PM MST	4.89
Nov 5, 1:00 PM MST	4.89
Nov 5, 12:00 PM MST	4.89
Nov 5, 11:00 AM MST	4.88
Nov 5, 10:00 AM MST	4.89
Nov 5, 9:00 AM MST	4.89
Nov 5, 8:00 AM MST	4.89
Nov 5, 7:00 AM MST	4.89
Nov 5, 6:00 AM MST	4.89
Nov 5, 5:00 AM MST	4.89
Nov 5, 4:00 AM MST	4.89
Nov 5, 3:00 AM MST	4.89
Nov 5, 2:00 AM MST	4.89
Nov 5, 1:00 AM MST	4.89
Nov 5, 12:00 AM MST	4.89
Nov 4, 11:00 PM MST	4.9
Nov 4, 10:00 PM MST	4.9
Nov 4, 9:00 PM MST	4.9
Nov 4, 8:00 PM MST	4.9
Nov 4, 7:00 PM MST	4.9
Nov 4, 6:00 PM MST	4.9
Nov 4, 5:00 PM MST	4.9
Nov 4, 4:00 PM MST	4.9
Nov 4, 3:00 PM MST	4.9

Reading Nov 5, 5:00 PM MST · checked 6:23 PM MST

M F Flathead River near West Glacier MT

USGS 12358500

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

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

Discharge: 479 ft³/s
Gauge height: 1.7 ft

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	479	1.7
Nov 5, 4:45 PM MST	479	1.7
Nov 5, 3:45 PM MST	479	1.7
Nov 5, 2:45 PM MST	479	1.7
Nov 5, 1:45 PM MST	479	1.7
Nov 5, 12:45 PM MST	479	1.7
Nov 5, 11:45 AM MST	479	1.7
Nov 5, 10:45 AM MST	479	1.7
Nov 5, 9:45 AM MST	479	1.7
Nov 5, 8:45 AM MST	479	1.7
Nov 5, 7:45 AM MST	479	1.7
Nov 5, 6:45 AM MST	479	1.7
Nov 5, 5:45 AM MST	479	1.7
Nov 5, 4:45 AM MST	479	1.7
Nov 5, 3:45 AM MST	479	1.7
Nov 5, 2:45 AM MST	479	1.7
Nov 5, 1:45 AM MST	487	1.71
Nov 5, 12:45 AM MST	487	1.71
Nov 4, 11:45 PM MST	487	1.71
Nov 4, 10:45 PM MST	487	1.71
Nov 4, 9:45 PM MST	487	1.71
Nov 4, 8:45 PM MST	487	1.71
Nov 4, 7:45 PM MST	487	1.71
Nov 4, 6:45 PM MST	487	1.71
Nov 4, 5:45 PM MST	487	1.71
Nov 4, 4:45 PM MST	487	1.71
Nov 4, 3:45 PM MST	487	1.71

N F Flathead River nr Columbia Falls MT

USGS 12355500

Caution: Low water: go quiet and stealthy

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

Discharge: 650 ft³/s
Gauge height: 1.69 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	650	1.69
Nov 5, 4:45 PM MST	650	1.69
Nov 5, 3:45 PM MST	650	1.69
Nov 5, 2:45 PM MST	650	1.69
Nov 5, 1:45 PM MST	650	1.69
Nov 5, 12:45 PM MST	650	1.69
Nov 5, 11:45 AM MST	650	1.69
Nov 5, 10:45 AM MST	650	1.69
Nov 5, 9:45 AM MST	650	1.69
Nov 5, 8:45 AM MST	650	1.69
Nov 5, 7:45 AM MST	650	1.69
Nov 5, 6:45 AM MST	650	1.69
Nov 5, 5:45 AM MST	650	1.69
Nov 5, 4:45 AM MST	650	1.69
Nov 5, 3:45 AM MST	650	1.69
Nov 5, 2:45 AM MST	650	1.69
Nov 5, 1:45 AM MST	650	1.69
Nov 5, 12:45 AM MST	650	1.69
Nov 4, 11:45 PM MST	650	1.69
Nov 4, 10:45 PM MST	650	1.69
Nov 4, 9:45 PM MST	650	1.69
Nov 4, 8:45 PM MST	655	1.7
Nov 4, 7:45 PM MST	650	1.69
Nov 4, 6:45 PM MST	655	1.7
Nov 4, 5:45 PM MST	655	1.7
Nov 4, 4:45 PM MST	655	1.7
Nov 4, 3:45 PM MST	655	1.7

Checked Nov 5, 6:23 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.

Swiftcurrent Creek at Many Glacier MT
USGS 05014500 · MT · live flow · gauge height · 1.5 mi
Reading the gauge…
St. Mary River near Babb MT
USGS 05017500 · MT · live flow · gauge height · 12.1 mi
Reading the gauge…
St. Mary Canal at St. Mary Crossing near Babb MT
USGS 05018500 · MT · live flow · gauge height · 17.8 mi
Reading the gauge…
McDonald Creek at Apgar, MT
USGS 12358000 · MT · live flow · gauge height · 22.9 mi
Reading the gauge…
St. Mary River at International Boundary
USGS 05020500 · AL · live flow · gauge height · 23.4 mi
Reading the gauge…
Middle Fork Flathead River at West Glacier, MT
USGS 12357500 · MT · live flow · gauge height · water temperature · 23.8 mi
Reading the gauge…
M F Flathead River near West Glacier MT
USGS 12358500 · MT · live flow · gauge height · water temperature · 24.9 mi
Reading the gauge…
N F Flathead River nr Columbia Falls MT
USGS 12355500 · MT · live flow · gauge height · water temperature · 28.5 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.