Waterlands
Trinity R Ab Nf Trinity R nr Helena Ca River
USGS · 11526400
TRINITY R AB NF TRINITY R NR HELENA CA RIVER
USGS · 11526400LIVE

TRINITY R AB NF TRINITY R NR HELENA CA

TRINITY COUNTY, CA40.7665°N, -123.1144°W Updated 54 min ago
FLOW RATE
483cfs
GAUGE HT
9.24ft
WATER TEMP
17°F
AIR TEMP
60°F
WIND
5mph NNE
FISH INDEX
75SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
483cfs 42.8% vs avg
Optimal band: 417565 cfs
PERIOD HIGH
499cfs
PERIOD LOW
479cfs
RUNNABLE
100%
last 1 day in band

Gauge Height

9.24ft

Water Temperature

17.2°F
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

18.1in

-30% vs normal

18.1 in of precipitation so far this year, 30% below the 30-year normal of 25.76 in for this point in the season.

YTD Total

18.1in

This year so far

Normal to Date

25.8in

30-yr average

Typical Range

13.9–35.4in

10th–90th pct YTD

Departure

-30%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 4.24" · normal 7.27" (1.3–13.1)
Jan
Feb: 6.45" · normal 6.24" (1.3–12.1)
Feb
Mar: 0.53" · normal 5.67" (1.8–10.7)
Mar
Apr: 5.40" · normal 3.15" (1.1–6.2)
Apr
May: 1.21" · normal 2.35" (0.6–4.2)
May
Jun: 0.28" · normal 1.04" (0.1–2.1)
Jun
Jul: 0.00" (so far)· normal 0.25" (0.0–0.5)
Jul
Aug: normal 0.26" (0.0–0.5)
Aug
Sep: normal 0.48" (0.0–1.2)
Sep
Oct: normal 2.26" (0.1–4.5)
Oct
Nov: normal 4.60" (1.5–7.5)
Nov
Dec: normal 7.98" (1.4–15.0)
Dec
Baseline 19912020 · Source: Open-Meteo12:39 PM
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Weather Conditions
WEATHER CONDITIONS
TODAY
94°
60°
THU
96°
65°
FRI
96°
57°
SAT
92°
52°
SUN
99°
54°
MON
101°
56°
TUE
101°
58°
TIME
WED
1
NOW
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
THU
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
FRI
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SAT
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SUN
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
MON
12
am
1
am
2
am
3
am
4
am
TEMP
hourly forecast
93°
mild
93°
94°
93°
93°
91°
89°
86°
81°
76°
74°
72°
71°
71°
70°
69°
68°
67°
66°
69°
75°
79°
84°
89°
92°
95°
96°
95°
94°
92°
90°
86°
81°
75°
70°
65°
60°
59°
58°
58°
58°
58°
57°
63°
71°
78°
84°
88°
92°
94°
95°
96°
95°
92°
89°
84°
77°
67°
61°
58°
55°
54°
53°
53°
52°
52°
52°
56°
63°
71°
77°
83°
88°
90°
92°
92°
91°
90°
87°
84°
76°
67°
63°
59°
57°
56°
56°
56°
55°
55°
54°
60°
69°
78°
85°
90°
95°
97°
98°
99°
99°
98°
95°
90°
81°
70°
66°
62°
59°
59°
58°
57°
56°
WIND
mph · gust · dir
7mph W
G 8 mph
7
G8
W
9
G11
W
12
G15
W
13
G17
W
13
G18
W
13
G19
W
13
G21
W
12
G21
W
10
G22
WSW
10
G19
WSW
8
G17
WSW
6
G14
W
6
G13
W
6
G13
WSW
5
G10
WSW
5
G11
WSW
5
G10
WSW
5
G9
W
3
G8
WNW
6
G9
W
7
G9
W
8
G10
WSW
8
G10
WSW
9
G10
WSW
9
G10
W
10
G13
W
12
G16
W
14
G19
W
14
G20
W
14
G21
W
13
G22
W
13
G23
W
9
G18
W
7
G12
W
5
G7
WNW
4
W
3
W
3
W
3
W
3
W
3
W
3
W
2
W
3
W
3
W
3
W
4
W
4
G7
W
6
G8
W
8
G11
WNW
10
G13
WNW
12
G13
WNW
10
G12
W
7
G9
W
7
G9
W
6
G8
W
6
W
6
WNW
5
WNW
5
WNW
4
WNW
4
W
4
W
4
WNW
4
W
4
WNW
3
W
3
W
4
W
4
W
4
W
4
G6
W
5
G9
W
6
G11
W
8
G13
WNW
9
G13
WNW
9
G13
WNW
8
G9
WNW
6
G8
W
6
G7
W
5
WNW
5
WNW
5
WNW
4
WNW
4
W
3
G4
W
3
W
3
W
3
W
3
W
3
W
3
W
3
W
3
W
3
W
4
G5
W
5
G7
W
6
G10
WNW
7
G12
WNW
9
G13
WNW
10
G12
WNW
10
G11
WNW
6
G9
W
6
G7
W
6
WNW
5
WNW
5
W
4
WNW
4
WNW
4
WNW
3
W
3
W
PRECIP
chance %
0%
0%
0%
0%
1%
1%
1%
1%
0%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
CLOUDS
cover %
0%
clear
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
0%
5%
5%
10%
6%
7%
7%
43%
5%
100%
54%
100%
100%
8%
100%
100%
94%
100%
100%
100%
100%
90%
100%
100%
100%
100%
100%
100%
100%
61%
17%
18%
73%
15%
16%
16%
97%
62%
70%
9%
12%
13%
8%
16%
12%
11%
6%
6%
6%
4%
2%
0%
0%
0%
PRESSURE
hPa · trend
968
968966965965966963961961959958962963962960963964961960963
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
75
Temperature
Ideal
Wind
Light
Pressure
Rising — Slow
Moon Phase
Good
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:45 PM
14H 56M OF DAYLIGHT
MOON PHASE
Last Quarter
38% illuminated

Station Location

40.7665, -123.1144
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-08 11:45 UTC
Site #11526400·USGS

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