Waterlands
Arroyo Seco nr Pasadena Ca River
USGS · 11098000
ARROYO SECO NR PASADENA CA RIVER
USGS · 11098000LIVE

ARROYO SECO NR PASADENA CA

LOS ANGELES COUNTY, CA34.2222°N, -118.1776°W Updated 42 min ago
FLOW RATE
1.85cfs
GAUGE HT
1.15ft
AIR TEMP
73°F
WIND
6mph SSW
FISH INDEX
75SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
1.85cfs 19.6% vs avg
Optimal band: 12 cfs
PERIOD HIGH
1.85cfs
PERIOD LOW
1.4cfs
RUNNABLE
100%
last 1 day in band

Gauge Height

1.15ft
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

9.7in

-18% vs normal

9.69 in of precipitation so far this year, 18% below the 30-year normal of 11.85 in for this point in the season.

YTD Total

9.7in

This year so far

Normal to Date

11.8in

30-yr average

Typical Range

3.0–23.4in

10th–90th pct YTD

Departure

-18%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 2.81" · normal 3.57" (0.3–11.0)
Jan
Feb: 4.53" · normal 3.88" (0.6–7.9)
Feb
Mar: 0.14" · normal 2.69" (0.4–6.3)
Mar
Apr: 1.66" · normal 1.08" (0.1–2.0)
Apr
May: 0.55" · normal 0.53" (0.0–1.0)
May
Jun: 0.00" (so far)· normal 0.12" (0.0–0.2)
Jun
Jul: normal 0.12" (0.0–0.4)
Jul
Aug: normal 0.03" (0.0–0.1)
Aug
Sep: normal 0.18" (0.0–0.7)
Sep
Oct: normal 0.74" (0.1–1.5)
Oct
Nov: normal 0.95" (0.1–2.2)
Nov
Dec: normal 2.38" (0.4–5.4)
Dec
Baseline 19912020 · Source: Open-Meteo06:56 PM
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
85°
55°
WED
84°
57°
THU
83°
56°
FRI
81°
62°
SAT
76°
61°
SUN
75°
59°
MON
78°
60°
TIME
TUE
7
NOW
8
pm
9
pm
10
pm
11
pm
WED
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
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
TEMP
hourly forecast
74°
mild
74°
70°
67°
65°
63°
61°
61°
61°
60°
59°
57°
57°
60°
63°
68°
72°
76°
79°
82°
84°
82°
81°
79°
76°
72°
68°
64°
62°
59°
58°
56°
56°
58°
61°
63°
65°
66°
68°
70°
73°
76°
79°
81°
83°
83°
82°
80°
79°
76°
73°
71°
70°
68°
67°
66°
64°
64°
63°
62°
62°
64°
66°
68°
71°
73°
76°
78°
80°
81°
81°
80°
79°
76°
73°
70°
68°
67°
65°
64°
62°
62°
62°
61°
61°
61°
62°
64°
67°
70°
73°
75°
76°
76°
76°
74°
73°
71°
68°
66°
65°
64°
63°
61°
60°
59°
59°
59°
59°
59°
60°
62°
66°
WIND
mph · gust · dir
4mph SW
4
SW
2
G3
WSW
1
G2
W
1
WSW
1
SSW
0
G1
W
2
G3
NW
2
NW
2
NW
2
NW
1
S
1
SSE
1
SSW
3
G4
S
3
G7
SSW
6
G7
S
6
G9
S
7
G9
S
8
SSW
8
G9
SSW
8
SW
7
SW
6
G7
SW
5
SW
4
SW
2
G3
SW
1
S
2
SSE
3
SSE
2
SE
2
SE
2
SE
2
SE
2
S
2
G3
SSE
2
G4
SE
3
G4
SSE
5
SSE
6
SSE
7
S
7
S
8
S
9
SSW
10
SSW
10
SSW
9
SW
8
SW
8
SSW
6
SSW
5
SSW
3
G5
SSW
2
G5
S
2
G5
SSE
4
SE
3
G4
SE
2
G5
SE
2
G5
SE
2
G5
SE
1
G5
ESE
2
G4
ESE
3
G4
ESE
5
SSE
6
SSE
6
S
7
S
8
S
8
SSW
9
SSW
10
SSW
10
SSW
9
SSW
9
SSW
8
SSW
7
S
6
G7
SSE
5
G7
SE
5
G7
ESE
6
G7
ESE
6
SE
4
G5
SE
4
SE
4
G5
SE
4
G5
SE
4
G5
SE
3
G5
SE
4
G5
SSE
5
S
6
S
7
S
8
S
9
S
10
G11
S
10
S
10
SSW
9
SSW
8
SSW
8
SSW
7
G8
SSW
6
G8
SSW
5
G7
S
5
G8
SSE
7
G8
SE
8
SE
7
G8
ESE
7
SE
6
SE
6
SE
6
ESE
7
ESE
7
SE
7
SE
7
SSE
PRECIP
chance %
1%
1%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
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%
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%
CLOUDS
cover %
4%
clear
4%
0%
0%
0%
0%
1%
0%
0%
0%
0%
18%
100%
78%
28%
7%
12%
11%
7%
4%
4%
4%
2%
5%
5%
4%
2%
0%
2%
3%
6%
17%
100%
75%
50%
25%
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%
6%
25%
0%
7%
7%
6%
0%
0%
0%
6%
5%
5%
0%
57%
68%
70%
100%
100%
100%
100%
37%
0%
0%
13%
21%
0%
0%
0%
0%
0%
0%
15%
0%
0%
0%
41%
30%
48%
61%
95%
100%
100%
100%
86%
65%
PRESSURE
hPa · trend
963
963963963965962961962962961961961961960960960960959960961
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
75
Temperature
Warm
Wind
Light
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:41 AM
SUNSET
08:08 PM
14H 27M OF DAYLIGHT1H 11M REMAINING
MOON PHASE
First Quarter
62% illuminated

Station Location

34.2222, -118.1776
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-23 18:57 UTC
Site #11098000·USGS

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