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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11 USGS gauges near your location (within 30 miles)

Ruby River below reservoir near Alder, MT

USGS 06020600

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

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

Discharge: 43.6 ft³/s
Gauge height: 2.34 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, 5:45 PM MST	43.6	2.34
Nov 5, 4:45 PM MST	43.6	2.34
Nov 5, 3:45 PM MST	43.6	2.34
Nov 5, 2:45 PM MST	44.6	2.35
Nov 5, 1:45 PM MST	43.6	2.34
Nov 5, 12:45 PM MST	43.6	2.34
Nov 5, 11:45 AM MST	43.6	2.34
Nov 5, 10:45 AM MST	43.6	2.34
Nov 5, 9:45 AM MST	43.6	2.34
Nov 5, 8:45 AM MST	43.6	2.34
Nov 5, 7:45 AM MST	43.6	2.34
Nov 5, 6:45 AM MST	43.6	2.34
Nov 5, 5:45 AM MST	43.6	2.34
Nov 5, 4:45 AM MST	43.6	2.34
Nov 5, 3:45 AM MST	43.6	2.34
Nov 5, 2:45 AM MST	43.6	2.34
Nov 5, 1:45 AM MST	43.6	2.34
Nov 5, 12:45 AM MST	43.6	2.34
Nov 4, 11:45 PM MST	43.6	2.34
Nov 4, 10:45 PM MST	43.6	2.34
Nov 4, 9:45 PM MST	43.6	2.34
Nov 4, 8:45 PM MST	43.6	2.34
Nov 4, 7:45 PM MST	43.6	2.34
Nov 4, 6:45 PM MST	44.6	2.35
Nov 4, 5:45 PM MST	43.6	2.34
Nov 4, 4:45 PM MST	44.6	2.35
Nov 4, 3:45 PM MST	44.6	2.35

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

Open full screen USGS NWS

1.6 miles away in a straight line

Ruby River above reservoir near Alder, MT

USGS 06019500

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

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

Discharge: 108 ft³/s
Gauge height: 2.98 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, 5:45 PM MST	108	2.98
Nov 5, 4:45 PM MST	111	2.99
Nov 5, 3:45 PM MST	108	2.98
Nov 5, 2:45 PM MST	111	2.99
Nov 5, 1:45 PM MST	111	2.99
Nov 5, 12:45 PM MST	111	2.99
Nov 5, 11:45 AM MST	108	2.98
Nov 5, 10:45 AM MST	108	2.98
Nov 5, 9:45 AM MST	111	2.99
Nov 5, 8:45 AM MST	111	2.99
Nov 5, 7:45 AM MST	108	2.98
Nov 5, 6:45 AM MST	108	2.98
Nov 5, 5:45 AM MST	108	2.98
Nov 5, 4:45 AM MST	108	2.98
Nov 5, 3:45 AM MST	109	2.98
Nov 5, 2:45 AM MST	109	2.98
Nov 5, 1:45 AM MST	109	2.98
Nov 5, 12:45 AM MST	109	2.98
Nov 4, 11:45 PM MST	109	2.98
Nov 4, 10:45 PM MST	109	2.98
Nov 4, 9:45 PM MST	109	2.98
Nov 4, 8:45 PM MST	111	2.99
Nov 4, 7:45 PM MST	111	2.99
Nov 4, 6:45 PM MST	111	2.99
Nov 4, 5:45 PM MST	111	2.99
Nov 4, 4:45 PM MST	111	2.99
Nov 4, 3:45 PM MST	111	2.99

Madison River near Cameron MT

USGS 06040000

Good: Good trout conditions: fish normally

The full view adds the NWS forecast.

Discharge: 915 ft³/s
Gauge height: 2.15 ft
Water temp: 43.7°F

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	915	2.15	43.7
Nov 5, 4:15 PM MST	915	2.15	44.1
Nov 5, 3:15 PM MST	915	2.15	44.6
Nov 5, 2:15 PM MST	915	2.15	44.4
Nov 5, 1:15 PM MST	915	2.15	44.1
Nov 5, 12:15 PM MST	915	2.15	43.3
Nov 5, 11:15 AM MST	915	2.15	42.6
Nov 5, 10:15 AM MST	915	2.15	41.2
Nov 5, 9:15 AM MST	926	2.16	40.5
Nov 5, 8:15 AM MST	926	2.16	40.1
Nov 5, 7:15 AM MST	915	2.15	40.3
Nov 5, 6:15 AM MST	926	2.16	40.5
Nov 5, 5:15 AM MST	915	2.15	40.8
Nov 5, 4:15 AM MST	926	2.16	41
Nov 5, 3:15 AM MST	915	2.15	41.2
Nov 5, 2:15 AM MST	915	2.15	41.5
Nov 5, 1:15 AM MST	915	2.15	41.7
Nov 5, 12:15 AM MST	915	2.15	41.9
Nov 4, 11:15 PM MST	915	2.15	42.1
Nov 4, 10:15 PM MST	926	2.16	42.3
Nov 4, 9:15 PM MST	915	2.15	42.6
Nov 4, 8:15 PM MST	915	2.15	43
Nov 4, 7:15 PM MST	915	2.15	43.3
Nov 4, 6:15 PM MST	915	2.15	43.9
Nov 4, 5:15 PM MST	926	2.16	44.4
Nov 4, 4:15 PM MST	926	2.16	45.1
Nov 4, 3:15 PM MST	926	2.16	45.3

Beaverhead River near Twin Bridges MT

USGS 06018500

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

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

Discharge: 240 ft³/s
Gauge height: 3.4 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, 5:15 PM MST	240	3.4
Nov 5, 4:15 PM MST	242	3.41
Nov 5, 3:15 PM MST	242	3.41
Nov 5, 2:15 PM MST	242	3.41
Nov 5, 1:15 PM MST	242	3.41
Nov 5, 12:15 PM MST	242	3.41
Nov 5, 11:15 AM MST	244	3.42
Nov 5, 10:15 AM MST	242	3.41
Nov 5, 9:15 AM MST	242	3.41
Nov 5, 8:15 AM MST	242	3.41
Nov 5, 7:15 AM MST	242	3.41
Nov 5, 6:15 AM MST	242	3.41
Nov 5, 5:15 AM MST	244	3.42
Nov 5, 4:15 AM MST	242	3.41
Nov 5, 3:15 AM MST	242	3.41
Nov 5, 2:15 AM MST	242	3.41
Nov 5, 1:15 AM MST	242	3.41
Nov 5, 12:15 AM MST	242	3.41
Nov 4, 11:15 PM MST	240	3.4
Nov 4, 10:15 PM MST	240	3.4
Nov 4, 9:15 PM MST	242	3.41
Nov 4, 8:15 PM MST	242	3.41
Nov 4, 7:15 PM MST	242	3.41
Nov 4, 6:15 PM MST	242	3.41
Nov 4, 5:15 PM MST	244	3.42
Nov 4, 4:15 PM MST	242	3.41
Nov 4, 3:15 PM MST	244	3.42

Madison River at Ennis, MT

USGS 06040050

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

No flow statistics here.

Discharge: 894 ft³/s
Gauge height: 4.46 ft
Water temp: 46°F

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, 5:00 PM MST	894	4.46	46
Nov 5, 4:00 PM MST	910	4.47	46.2
Nov 5, 3:00 PM MST	942	4.49	46.6
Nov 5, 2:00 PM MST	894	4.46	46
Nov 5, 1:00 PM MST	942	4.49	45.3
Nov 5, 12:00 PM MST	926	4.48	43.7
Nov 5, 11:00 AM MST	942	4.49	42.4
Nov 5, 10:00 AM MST	942	4.49	41.2
Nov 5, 9:00 AM MST	926	4.48	40.1
Nov 5, 8:00 AM MST	910	4.47	39.7
Nov 5, 7:00 AM MST	878	4.45	39.9
Nov 5, 6:00 AM MST	926	4.48	40.3
Nov 5, 5:00 AM MST	910	4.47	40.6
Nov 5, 4:00 AM MST	958	4.5	40.8
Nov 5, 3:00 AM MST	926	4.48	41.2
Nov 5, 2:00 AM MST	863	4.44	41.4
Nov 5, 1:00 AM MST	910	4.47	41.7
Nov 5, 12:00 AM MST	894	4.46	42.3
Nov 4, 11:00 PM MST	910	4.47	42.8
Nov 4, 10:00 PM MST	942	4.49	43.3
Nov 4, 9:00 PM MST	894	4.46	43.9
Nov 4, 8:00 PM MST	910	4.47	44.6
Nov 4, 7:00 PM MST	878	4.45	45.3
Nov 4, 6:00 PM MST	942	4.49	45.9
Nov 4, 5:00 PM MST	926	4.48	46.6
Nov 4, 4:00 PM MST	878	4.45	46.8
Nov 4, 3:00 PM MST	958	4.5	46.6

Ruby River near Twin Bridges MT
USGS 06023000
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS NWS
On our page for Ruby River
22.1 miles away in a straight line
Beaverhead River at Twin Bridges, MT
USGS 06023100
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS NWS
24.8 miles away in a straight line
Big Hole R bl Hamilton Ditch nr Twin Bridges, MT
USGS 06026420
Limited data: Trout-friendly temperature: no flow comparison here
No flow statistics here. The full view adds the NWS forecast.
Water temp
41.4°F
Reading Nov 5, 5:30 PM MST · checked 6:20 PM MST
Open full screen USGS NWS
25.4 miles away in a straight line
Beaverhead River at Dillon MT
USGS 06017000
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS NWS
On our page for Beaverhead River
25.7 miles away in a straight line
Big Hole River near Glen MT
USGS 06026210
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS NWS
25.8 miles away in a straight line

Jefferson River near Twin Bridges, MT

USGS 06026500

Good: Good trout conditions: fish normally

The full view adds the NWS forecast.

Discharge: 1,310 ft³/s
Gauge height: 3.93 ft
Water temp: 42.6°F

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)	Water temp (°F)
Nov 5, 5:15 PM MST	1,310	3.93	42.6
Nov 5, 4:15 PM MST	1,310	3.93	42.6
Nov 5, 3:15 PM MST	1,320	3.94	42.4
Nov 5, 2:15 PM MST	1,320	3.94	41.9
Nov 5, 1:15 PM MST	1,320	3.94	41.4
Nov 5, 12:15 PM MST	1,320	3.94	40.6
Nov 5, 11:15 AM MST	1,320	3.94	39.9
Nov 5, 10:15 AM MST	1,320	3.95	39.4
Nov 5, 9:15 AM MST	1,320	3.95	38.8
Nov 5, 8:15 AM MST	1,330	3.96	38.8
Nov 5, 7:15 AM MST	1,330	3.96	39
Nov 5, 6:15 AM MST	1,330	3.96	39.4
Nov 5, 5:15 AM MST	1,340	3.97	39.6
Nov 5, 4:15 AM MST	1,340	3.97	39.9
Nov 5, 3:15 AM MST	1,350	3.98	40.3
Nov 5, 2:15 AM MST	1,350	3.98	40.6
Nov 5, 1:15 AM MST	1,360	3.99	40.8
Nov 5, 12:15 AM MST	1,360	3.99	41.4
Nov 4, 11:15 PM MST	1,370	4	41.7
Nov 4, 10:15 PM MST	1,370	4	42.1
Nov 4, 9:15 PM MST	1,380	4.01	42.4
Nov 4, 8:15 PM MST	1,380	4.01	42.8
Nov 4, 7:15 PM MST	1,380	4.01	43.2
Nov 4, 6:15 PM MST	1,390	4.02	43.5
Nov 4, 5:15 PM MST	1,390	4.02	43.7
Nov 4, 4:15 PM MST	1,390	4.02	43.9
Nov 4, 3:15 PM MST	1,390	4.02	43.7

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.

Ruby River below reservoir near Alder, MT
USGS 06020600 · MT · live flow · gauge height · 1.6 mi
Reading the gauge…
Ruby River above reservoir near Alder, MT
USGS 06019500 · MT · live flow · gauge height · 2.1 mi
Reading the gauge…
Madison River near Cameron MT
USGS 06040000 · MT · live flow · gauge height · water temperature · 18.3 mi
Reading the gauge…
Beaverhead River near Twin Bridges MT
USGS 06018500 · MT · live flow · gauge height · 19.4 mi
Reading the gauge…
Madison River at Ennis, MT
USGS 06040050 · MT · live flow · gauge height · water temperature · 21.5 mi
Reading the gauge…
Ruby River near Twin Bridges MT
USGS 06023000 · MT · live flow · gauge height · water temperature · 22.1 mi
Reading the gauge…
Beaverhead River at Twin Bridges, MT
USGS 06023100 · MT · live flow · gauge height · water temperature · 24.8 mi
Reading the gauge…
Big Hole R bl Hamilton Ditch nr Twin Bridges, MT
USGS 06026420 · MT · live flow · gauge height · water temperature · 25.4 mi
Reading the gauge…
Beaverhead River at Dillon MT
USGS 06017000 · MT · live flow · gauge height · 25.7 mi
Reading the gauge…
Big Hole River near Glen MT
USGS 06026210 · MT · live flow · gauge height · water temperature · 25.8 mi
Reading the gauge…
Jefferson River near Twin Bridges, MT
USGS 06026500 · MT · live flow · gauge height · water temperature · 28.8 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.