Waterlands
Trinity R A Lewiston Ca River
USGS · 11525500
TRINITY R A LEWISTON CA RIVER
USGS · 11525500LIVE

TRINITY R A LEWISTON CA

TRINITY COUNTY, CA40.7247°N, -122.8011°W Updated 17 hr ago
FLOW RATE
448cfs
AIR TEMP
80°F
WIND
2mph SW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
448cfs 31.6% vs avg
Optimal band: 513695 cfs
PERIOD HIGH
1,420cfs
PERIOD LOW
447cfs
RUNNABLE
32%
last 30 day in band
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

18.7in

-31% vs normal

18.69 in of precipitation so far this year, 31% below the 30-year normal of 27.05 in for this point in the season.

YTD Total

18.7in

This year so far

Normal to Date

27.1in

30-yr average

Typical Range

14.5–38.0in

10th–90th pct YTD

Departure

-31%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 4.58" · normal 7.33" (1.1–13.8)
Jan
Feb: 5.87" · normal 6.76" (1.1–12.5)
Feb
Mar: 0.32" · normal 5.97" (1.6–11.9)
Mar
Apr: 6.36" · normal 3.37" (1.5–6.4)
Apr
May: 1.18" · normal 2.38" (0.5–4.5)
May
Jun: 0.38" · normal 1.14" (0.1–2.7)
Jun
Jul: 0.00" (so far)· normal 0.25" (0.0–0.7)
Jul
Aug: normal 0.25" (0.0–0.5)
Aug
Sep: normal 0.51" (0.0–1.4)
Sep
Oct: normal 2.32" (0.1–4.9)
Oct
Nov: normal 4.59" (1.4–8.0)
Nov
Dec: normal 8.00" (1.1–15.3)
Dec
Baseline 19912020 · Source: Open-Meteo05:11 PM
Your History · TRINITY R A LEWISTON CA

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Weather Conditions
WEATHER CONDITIONS
TODAY
98°
61°
FRI
94°
65°
SAT
97°
50°
SUN
104°
59°
MON
97°
65°
TUE
100°
59°
WED
95°
52°
TIME
THU
5
NOW
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
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
TUE
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
TEMP
hourly forecast
96°
mild
96°
93°
89°
84°
79°
77°
76°
74°
73°
71°
70°
68°
66°
65°
68°
73°
77°
82°
86°
90°
92°
94°
94°
93°
91°
88°
84°
80°
75°
72°
71°
69°
68°
66°
61°
57°
53°
50°
55°
63°
70°
78°
84°
89°
92°
93°
96°
97°
96°
93°
90°
81°
74°
69°
67°
64°
60°
59°
60°
60°
62°
63°
65°
71°
79°
88°
95°
100°
103°
104°
103°
101°
100°
98°
93°
86°
80°
74°
70°
67°
65°
65°
65°
67°
68°
68°
71°
72°
79°
87°
94°
95°
96°
97°
97°
97°
95°
93°
90°
83°
77°
73°
70°
67°
64°
62°
60°
59°
59°
61°
65°
70°
77°
WIND
mph · gust · dir
11mph WNW
G 15 mph
11
G15
WNW
12
G20
WNW
10
G20
W
8
G18
WSW
8
G17
SSW
7
G12
S
7
G11
S
6
G10
S
6
G8
S
5
G7
SSE
4
G5
SSW
3
G5
SSW
3
G4
S
4
G5
S
3
G5
S
3
G6
S
2
G4
SSW
2
G4
SSW
3
G9
SW
5
G8
WSW
6
G8
W
7
G9
WNW
10
G14
WNW
11
G16
W
13
G18
W
12
G20
W
10
G20
W
7
G19
W
7
G16
SSW
8
G15
SSW
7
G12
S
8
G12
S
7
G12
SSW
7
G11
SSW
6
G9
SSW
4
G6
SW
3
G4
WSW
4
WSW
3
G4
WSW
3
G4
W
3
G4
W
3
WSW
3
G4
WSW
4
G6
WSW
5
G8
W
6
G10
W
7
G13
WNW
8
G15
WNW
10
G14
W
11
G12
W
8
G11
W
5
G6
WSW
5
WSW
5
W
5
W
5
WSW
4
G5
W
4
G5
WSW
4
WSW
3
W
1
G2
W
3
WSW
3
W
1
G2
WNW
2
G3
NW
2
G3
SSE
1
G4
SE
1
G5
SSE
1
G9
SSE
3
G13
E
6
G14
SSE
7
G12
SW
7
G11
SSW
9
G10
WSW
8
G14
W
5
G10
WSW
4
WSW
4
W
4
W
4
WSW
3
W
3
WSW
3
WSW
2
WSW
2
G3
W
3
WSW
4
G5
NNE
3
WSW
3
G4
WNW
2
G3
W
1
G4
SW
6
W
12
G13
W
12
G14
W
12
W
13
W
14
W
10
G12
W
9
G12
W
4
W
4
WSW
4
W
4
WSW
4
WSW
4
WSW
4
WSW
4
WSW
4
WSW
4
WSW
4
WSW
4
W
4
G5
W
3
G5
W
PRECIP
chance %
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%
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%
2%
2%
2%
2%
2%
2%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
1%
1%
1%
1%
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%
50%
18%
42%
98%
81%
100%
100%
100%
37%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
68%
17%
57%
16%
22%
100%
94%
100%
100%
100%
100%
100%
100%
100%
84%
100%
100%
100%
100%
100%
100%
100%
100%
37%
83%
19%
75%
10%
10%
10%
10%
11%
8%
8%
68%
66%
42%
13%
6%
4%
3%
1%
1%
0%
0%
0%
0%
0%
PRESSURE
hPa · trend
948
948947945948948947948949946948948949945947947949947949950
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Too Hot
Wind
Calm
Pressure
Falling — Active
Moon Phase
Average
DAYLIGHT
SUNRISE
05:48 AM
SUNSET
08:44 PM
14H 56M OF DAYLIGHT
MOON PHASE
Waning Crescent
26% illuminated

Station Location

40.7247, -122.8011
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #11525500·USGS

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