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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34 USGS gauges near your location (within 30 miles)

Thompson Ck nr Starhill, LA

USGS 07373700

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

No water temperature, flow statistics here.

Gauge height: 1.62 ft

No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it 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, 5:45 PM CST	1.62
Nov 5, 4:45 PM CST	1.62
Nov 5, 3:45 PM CST	1.62
Nov 5, 2:45 PM CST	1.63
Nov 5, 1:45 PM CST	1.62
Nov 5, 12:45 PM CST	1.63
Nov 5, 11:45 AM CST	1.63
Nov 5, 10:45 AM CST	1.64
Nov 5, 9:45 AM CST	1.64
Nov 5, 8:45 AM CST	1.64
Nov 5, 7:45 AM CST	1.64
Nov 5, 6:45 AM CST	1.64
Nov 5, 5:45 AM CST	1.64
Nov 5, 4:45 AM CST	1.64
Nov 5, 3:45 AM CST	1.65
Nov 5, 2:45 AM CST	1.65
Nov 5, 1:45 AM CST	1.65
Nov 5, 12:45 AM CST	1.66
Nov 4, 11:45 PM CST	1.66
Nov 4, 10:45 PM CST	1.66
Nov 4, 9:45 PM CST	1.66
Nov 4, 8:45 PM CST	1.67
Nov 4, 7:45 PM CST	1.67
Nov 4, 6:45 PM CST	1.67
Nov 4, 5:45 PM CST	1.66
Nov 4, 4:45 PM CST	1.66
Nov 4, 3:45 PM CST	1.65

Reading Nov 5, 5:45 PM CST · checked 6:41 PM CST

Open full screen USGS

14 miles away in a straight line

Choctaw Bayou at I-10 east of Grosse Tete, LA

USGS 07381429

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

No water temperature, flow statistics here.

Gauge height: 12.9 ft

No flow here now. USGS stopped publishing discharge at this gauge on Oct 2, 2024; 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, 5:45 PM CST	12.9
Nov 5, 4:45 PM CST	12.9
Nov 5, 3:45 PM CST	12.9
Nov 5, 2:45 PM CST	12.9
Nov 5, 1:45 PM CST	13
Nov 5, 12:45 PM CST	12.9
Nov 5, 11:45 AM CST	12.9
Nov 5, 10:45 AM CST	12.9
Nov 5, 9:45 AM CST	12.9
Nov 5, 8:45 AM CST	13
Nov 5, 7:45 AM CST	13
Nov 5, 6:45 AM CST	13.1
Nov 5, 5:45 AM CST	13
Nov 5, 4:45 AM CST	13
Nov 5, 3:45 AM CST	13.1
Nov 5, 2:45 AM CST	13.1
Nov 5, 1:45 AM CST	13
Nov 5, 12:45 AM CST	13.1
Nov 4, 11:45 PM CST	13
Nov 4, 10:45 PM CST	12.9
Nov 4, 9:45 PM CST	12.9
Nov 4, 8:45 PM CST	12.9
Nov 4, 7:45 PM CST	12.9
Nov 4, 6:45 PM CST	12.9
Nov 4, 5:45 PM CST	13
Nov 4, 4:45 PM CST	13
Nov 4, 3:45 PM CST	13

Reading Nov 5, 5:45 PM CST · checked 6:41 PM CST

Bayou Grosse Tete S. of I10 at Grosse Tete, LA

USGS 07381427

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

No water temperature, flow statistics here.

Gauge height: 5.03 ft

No flow here now. USGS stopped publishing discharge at this gauge on Oct 3, 2024; 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, 5:30 PM CST	5.03
Nov 5, 4:30 PM CST	5.05
Nov 5, 3:30 PM CST	5.06
Nov 5, 2:30 PM CST	5.09
Nov 5, 1:30 PM CST	5.08
Nov 5, 12:30 PM CST	5.1
Nov 5, 11:30 AM CST	5.12
Nov 5, 10:30 AM CST	5.14
Nov 5, 9:30 AM CST	5.16
Nov 5, 8:30 AM CST	5.17
Nov 5, 7:30 AM CST	5.18
Nov 5, 6:30 AM CST	5.2
Nov 5, 5:30 AM CST	5.2
Nov 5, 4:30 AM CST	5.19
Nov 5, 3:30 AM CST	5.17
Nov 5, 2:30 AM CST	5.17
Nov 5, 1:30 AM CST	5.15
Nov 5, 12:30 AM CST	5.1
Nov 4, 11:30 PM CST	5.1
Nov 4, 10:30 PM CST	5.12
Nov 4, 9:30 PM CST	5.08
Nov 4, 8:30 PM CST	5.1
Nov 4, 7:30 PM CST	5.09
Nov 4, 6:30 PM CST	5.13
Nov 4, 5:30 PM CST	5.08
Nov 4, 4:30 PM CST	5.15
Nov 4, 3:30 PM CST	5.1

Reading Nov 5, 5:30 PM CST · checked 6:41 PM CST

Byu Sara nr St. Francisville, LA
USGS 07373300
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it reports what is shown. We found no other gauge on the same river that publishes flow.
Open full screen USGS
15.9 miles away in a straight line

Atchafalaya R @ Krotz Springs, LA

USGS 07381500

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

No water temperature, flow statistics here.

Gauge height: 0.77 ft

No flow here now. USGS stopped publishing discharge at this gauge on Sep 29, 1964; it still reports what is shown. Flow on the same river: Atchafalaya River at Simmesport, LA (USGS 07381490, 30.2 miles away).

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, 6:00 PM CST	0.77
Nov 5, 5:00 PM CST	0.71
Nov 5, 4:00 PM CST	0.65
Nov 5, 3:00 PM CST	0.58
Nov 5, 2:00 PM CST	0.55
Nov 5, 1:00 PM CST	0.54
Nov 5, 12:00 PM CST	0.58
Nov 5, 11:00 AM CST	0.62
Nov 5, 10:00 AM CST	0.67
Nov 5, 9:00 AM CST	0.7
Nov 5, 8:00 AM CST	0.73
Nov 5, 7:00 AM CST	0.75
Nov 5, 6:00 AM CST	0.77
Nov 5, 5:00 AM CST	0.78
Nov 5, 4:00 AM CST	0.77
Nov 5, 3:00 AM CST	0.77
Nov 5, 2:00 AM CST	0.78
Nov 5, 1:00 AM CST	0.79
Nov 5, 12:00 AM CST	0.82
Nov 4, 11:00 PM CST	0.85
Nov 4, 10:00 PM CST	0.88
Nov 4, 9:00 PM CST	0.9
Nov 4, 8:00 PM CST	0.93
Nov 4, 7:00 PM CST	0.95
Nov 4, 6:00 PM CST	0.97
Nov 4, 5:00 PM CST	0.98
Nov 4, 4:00 PM CST	0.96

Reading Nov 5, 6:00 PM CST · checked 6:41 PM CST

White Bayou at State Hwy 64 near Zachary, LA

USGS 07377780

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: 27.6 ft

No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it 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, 6:00 PM CST	27.6
Nov 5, 5:00 PM CST	27.6
Nov 5, 4:00 PM CST	27.6
Nov 5, 3:00 PM CST	27.6
Nov 5, 2:00 PM CST	27.6
Nov 5, 1:00 PM CST	27.6
Nov 5, 12:00 PM CST	27.6
Nov 5, 11:00 AM CST	27.6
Nov 5, 10:00 AM CST	27.6
Nov 5, 9:00 AM CST	27.6
Nov 5, 8:00 AM CST	27.6
Nov 5, 7:00 AM CST	27.6
Nov 5, 6:00 AM CST	27.6
Nov 5, 5:00 AM CST	27.6
Nov 5, 4:00 AM CST	27.6
Nov 5, 3:00 AM CST	27.6
Nov 5, 2:00 AM CST	27.6
Nov 5, 1:00 AM CST	27.6
Nov 5, 12:00 AM CST	27.6
Nov 4, 11:00 PM CST	27.6
Nov 4, 10:00 PM CST	27.6
Nov 4, 9:00 PM CST	27.6
Nov 4, 8:00 PM CST	27.6
Nov 4, 7:00 PM CST	27.6
Nov 4, 6:00 PM CST	27.6
Nov 4, 5:00 PM CST	27.6
Nov 4, 4:00 PM CST	27.6

Reading Nov 5, 6:00 PM CST · checked 6:41 PM CST

INTRACOASTAL WATERWAY NR PORT ALLEN LA
USGS 07381412
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it reports what is shown. We found no other gauge on the same river that publishes flow.
Open full screen USGS
20.2 miles away in a straight line

Mississippi River at Baton Rouge, LA

USGS 07374000

Caution: Fish early: the water is past the National Park Service's 68°F line now

The full view adds the NWS forecast.

Discharge: 219,000 ft³/s
Gauge height: 7.12 ft
Water temp: 69.4°F

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, 6:15 PM CST	219,000	7.12	69.4
Nov 5, 5:15 PM CST	218,000	7.11	69.6
Nov 5, 4:15 PM CST	218,000	7.1	69.8
Nov 5, 3:15 PM CST	219,000	7.13	69.8
Nov 5, 2:15 PM CST	219,000	7.13	70
Nov 5, 1:15 PM CST	219,000	7.12	69.8
Nov 5, 12:15 PM CST	220,000	7.16	69.8
Nov 5, 11:15 AM CST	220,000	7.18	69.6
Nov 5, 10:15 AM CST	221,000	7.23	69.4
Nov 5, 9:15 AM CST	221,000	7.23	69.4
Nov 5, 8:15 AM CST	222,000	7.26	69.3
Nov 5, 7:15 AM CST	222,000	7.26	69.3
Nov 5, 6:15 AM CST	222,000	7.27	69.3
Nov 5, 5:15 AM CST	223,000	7.28	69.3
Nov 5, 4:15 AM CST	222,000	7.26	69.3
Nov 5, 3:15 AM CST	222,000	7.27	69.3
Nov 5, 2:15 AM CST	223,000	7.28	69.3
Nov 5, 1:15 AM CST	222,000	7.27	69.4
Nov 5, 12:15 AM CST	224,000	7.31	69.4
Nov 4, 11:15 PM CST	224,000	7.32	69.4
Nov 4, 10:15 PM CST	224,000	7.33	69.4
Nov 4, 9:15 PM CST	225,000	7.37	69.4
Nov 4, 8:15 PM CST	225,000	7.38	69.4
Nov 4, 7:15 PM CST	227,000	7.43	69.4
Nov 4, 6:15 PM CST	227,000	7.43	69.6
Nov 4, 5:15 PM CST	228,000	7.47	69.8
Nov 4, 4:15 PM CST	227,000	7.45	70

State Canal near Krotz Springs, LA

USGS 07384400

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: 10.5 ft

No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it 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, 6:15 PM CST	10.5
Nov 5, 5:15 PM CST	10.5
Nov 5, 4:15 PM CST	10.5
Nov 5, 3:15 PM CST	10.5
Nov 5, 2:15 PM CST	10.5
Nov 5, 1:15 PM CST	10.5
Nov 5, 12:15 PM CST	10.5
Nov 5, 11:15 AM CST	10.5
Nov 5, 10:15 AM CST	10.4
Nov 5, 9:15 AM CST	10.4
Nov 5, 8:15 AM CST	10.4
Nov 5, 7:15 AM CST	10.4
Nov 5, 6:15 AM CST	10.4
Nov 5, 5:15 AM CST	10.4
Nov 5, 4:15 AM CST	10.4
Nov 5, 3:15 AM CST	10.4
Nov 5, 2:15 AM CST	10.4
Nov 5, 1:15 AM CST	10.4
Nov 5, 12:15 AM CST	10.4
Nov 4, 11:15 PM CST	10.4
Nov 4, 10:15 PM CST	10.4
Nov 4, 9:15 PM CST	10.4
Nov 4, 8:15 PM CST	10.4
Nov 4, 7:15 PM CST	10.4
Nov 4, 6:15 PM CST	10.4
Nov 4, 5:15 PM CST	10.4
Nov 4, 4:15 PM CST	10.4

Reading Nov 5, 6:15 PM CST · checked 6:41 PM CST

CORPORATION C.AT E.ROOSEVELT ST. AT B. R. LA.

USGS 07379503

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

No water temperature, flow statistics here.

Gauge height: 16.4 ft

No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it 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, 6:15 PM CST	16.4
Nov 5, 5:15 PM CST	16.4
Nov 5, 4:15 PM CST	16.3
Nov 5, 3:15 PM CST	16.3
Nov 5, 2:15 PM CST	16.3
Nov 5, 1:15 PM CST	16.4
Nov 5, 12:15 PM CST	16.4
Nov 5, 11:15 AM CST	16.4
Nov 5, 10:15 AM CST	16.4
Nov 5, 9:15 AM CST	16.4
Nov 5, 8:15 AM CST	16.4
Nov 5, 7:15 AM CST	16.4
Nov 5, 6:15 AM CST	16.4
Nov 5, 5:15 AM CST	16.4
Nov 5, 4:15 AM CST	16.4
Nov 5, 3:15 AM CST	16.4
Nov 5, 2:15 AM CST	16.4
Nov 5, 1:15 AM CST	16.4
Nov 5, 12:15 AM CST	16.4
Nov 4, 11:15 PM CST	16.4
Nov 4, 10:15 PM CST	16.4
Nov 4, 9:15 PM CST	16.4
Nov 4, 8:15 PM CST	16.4
Nov 4, 7:15 PM CST	16.4
Nov 4, 6:15 PM CST	16.4
Nov 4, 5:15 PM CST	16.4
Nov 4, 4:15 PM CST	16.4

Reading Nov 5, 6:15 PM CST · checked 6:41 PM CST

Comite River near Zachary, LA

USGS 07377750

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: 2.14 ft

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: Comite R. at Pt. Hudson-Pride Rd near Milldale, LA (USGS 07377600, 4.8 miles away).

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, 6:00 PM CST	2.14
Nov 5, 5:00 PM CST	2.14
Nov 5, 4:00 PM CST	2.14
Nov 5, 3:00 PM CST	2.14
Nov 5, 2:00 PM CST	2.14
Nov 5, 1:00 PM CST	2.14
Nov 5, 12:00 PM CST	2.15
Nov 5, 11:00 AM CST	2.15
Nov 5, 10:00 AM CST	2.14
Nov 5, 9:00 AM CST	2.14
Nov 5, 8:00 AM CST	2.15
Nov 5, 7:00 AM CST	2.15
Nov 5, 6:00 AM CST	2.15
Nov 5, 5:00 AM CST	2.15
Nov 5, 4:00 AM CST	2.15
Nov 5, 3:00 AM CST	2.15
Nov 5, 2:00 AM CST	2.15
Nov 5, 1:00 AM CST	2.15
Nov 5, 12:00 AM CST	2.15
Nov 4, 11:00 PM CST	2.15
Nov 4, 10:00 PM CST	2.15
Nov 4, 9:00 PM CST	2.15
Nov 4, 8:00 PM CST	2.15
Nov 4, 7:00 PM CST	2.15
Nov 4, 6:00 PM CST	2.16
Nov 4, 5:00 PM CST	2.16
Nov 4, 4:00 PM CST	2.16

Comite River near Baker, LA
USGS 07377754
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
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: Comite River near Comite, LA (USGS 07378000, 5.9 miles away).
Open full screen USGS NWS
22.4 miles away in a straight line

Checked Nov 5, 6:41 PM CST; 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.

Thompson Ck nr Starhill, LA
USGS 07373700 · LA · no flow · gauge height · 14 mi
Reading the gauge…
Choctaw Bayou at I-10 east of Grosse Tete, LA
USGS 07381429 · LA · flow record ended · gauge height · 14.3 mi
Reading the gauge…
Bayou Grosse Tete S. of I10 at Grosse Tete, LA
USGS 07381427 · LA · flow record ended · gauge height · 14.5 mi
Reading the gauge…
Byu Sara nr St. Francisville, LA
USGS 07373300 · LA · no flow · gauge height · 15.9 mi
Reading the gauge…
Atchafalaya R @ Krotz Springs, LA
USGS 07381500 · LA · flow record ended · gauge height · 17.5 mi
Reading the gauge…
White Bayou at State Hwy 64 near Zachary, LA
USGS 07377780 · LA · no flow · gauge height · 20.2 mi
Reading the gauge…
INTRACOASTAL WATERWAY NR PORT ALLEN LA
USGS 07381412 · LA · no flow · gauge height · 20.2 mi
Reading the gauge…
Mississippi River at Baton Rouge, LA
USGS 07374000 · LA · live flow · gauge height · water temperature · 20.5 mi
Reading the gauge…
State Canal near Krotz Springs, LA
USGS 07384400 · LA · no flow · gauge height · 21.9 mi
Reading the gauge…
CORPORATION C.AT E.ROOSEVELT ST. AT B. R. LA.
USGS 07379503 · LA · no flow · gauge height · 22.2 mi
Reading the gauge…
Comite River near Zachary, LA
USGS 07377750 · LA · no flow · gauge height · 22.4 mi
Reading the gauge…
Comite River near Baker, LA
USGS 07377754 · LA · no flow · gauge height · 22.4 mi
Reading the gauge…

22 more gauges

Hurricane Creek at Baton Rouge, LAUSGS 07378008 · LA · no flow · gauge height · 22.5 mi
Comite River at Comite Dr near Baton Rouge, LAUSGS 07377760 · LA · no flow · gauge height · 22.5 mi
Ward Creek at Government St at Baton Rouge, LAUSGS 07379000 · LA · flow record ended · gauge height · 23 mi
Comite River at Hooper Road near Baton Rouge, LAUSGS 07377870 · LA · no flow · gauge height · 23.2 mi
Comite River near Comite, LAUSGS 07378000 · LA · live flow · gauge height · 24.7 mi
Comite R. at Pt. Hudson-Pride Rd near Milldale, LAUSGS 07377600 · LA · live flow · gauge height · 25.5 mi
Ward Creek at Essen Lane near Baton Rouge, LAUSGS 07379050 · LA · no flow · gauge height · 26.4 mi
North Branch Ward Creek at Baton Rouge, LAUSGS 07379100 · LA · no flow · gauge height · 26.5 mi
Beaver Bayou at Denham Road nr Baton Rouge, LAUSGS 07378075 · LA · no flow · gauge height · 26.6 mi
Comite R. at Greenwell Spg Rd near Baton Rouge, LAUSGS 07378050 · LA · no flow · gauge height · 26.8 mi
Atchafalaya River at Butte La Rose, LAUSGS 07381515 · LA · no flow · gauge height · 26.8 mi
Comite River near Olive Branch, LAUSGS 07377500 · LA · flow record ended · gauge height · 27 mi
Beaver Bayou at Hooper Road near Baton Rouge, LAUSGS 07378083 · LA · no flow · gauge height · 27 mi
Beaver Bayou at Wax Rd near Baton Rouge, LAUSGS 07378100 · LA · no flow · gauge height · 27.3 mi
Little Sandy Creek at Peairs Rd SE of Milldale, LAUSGS 07377230 · LA · no flow · gauge height · 27.5 mi
Dawson Cr. at Bluebonnet Blvd near Baton Rouge, LAUSGS 07379960 · LA · flow record ended · gauge height · 27.8 mi
Bayou Fountain at Bluebonnet Blvd near B.R., LAUSGS 07378810 · LA · no flow · gauge height · 28.2 mi
Jones Cr. at Old Hammond Hwy near Baton Rouge, LAUSGS 07378650 · LA · no flow · gauge height · 28.2 mi
Pontoon Bridge Canal near Butte Larose, LAUSGS 301655091440800 · LA · no flow · gauge height · 28.3 mi
Sandy Ck at Alph. Forbes nr Greenwell Springs, LAUSGS 07377243 · LA · no flow · gauge height · 29 mi
Bayou Teche @ Port Barre, LA.USGS 07385450 · LA · flow record ended · gauge height · 29.4 mi
Amite River at Magnolia, LAUSGS 07377300 · LA · flow record ended · gauge height · 29.7 mi

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.