Waterlands
Mouth of Atchafalaya River
USGS · 073816525
MOUTH OF ATCHAFALAYA RIVER
USGS · 073816525LIVE

Mouth of Atchafalaya River at Atchafalaya Bay

ST. MARY PARISH, LA29.4303°N, -91.3339°W
AIR TEMP
83°F
WIND
3mph E
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
—cfs
No flow data available
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

28.3in

≈ normal

28.33 in of precipitation so far this year — about average for this point in the season (normal 25.53 in).

YTD Total

28.3in

This year so far

Normal to Date

25.5in

30-yr average

Typical Range

16.5–34.9in

10th–90th pct YTD

Departure

+11%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 3.71" · normal 4.72" (2.7–7.1)
Jan
Feb: 2.15" · normal 4.08" (1.6–7.2)
Feb
Mar: 3.25" · normal 4.10" (0.8–7.3)
Mar
Apr: 3.00" · normal 3.88" (0.6–6.9)
Apr
May: 8.69" · normal 3.38" (0.7–6.1)
May
Jun: 6.71" · normal 4.91" (2.0–7.1)
Jun
Jul: 0.81" (so far)· normal 6.00" (3.6–7.7)
Jul
Aug: normal 6.52" (2.8–12.3)
Aug
Sep: normal 6.06" (2.1–11.7)
Sep
Oct: normal 3.64" (0.2–6.9)
Oct
Nov: normal 3.62" (1.3–6.8)
Nov
Dec: normal 4.06" (2.2–6.3)
Dec
Baseline 1991–2020 · Source: Open-Meteo12:57 AM
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Weather Conditions
WEATHER CONDITIONS
TODAY
87°
75°
FRI
86°
77°
SAT
93°
77°
SUN
90°
76°
MON
89°
77°
TUE
89°
77°
WED
91°
78°
TIME
FRI
1
NOW
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
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
TEMP
hourly forecast
79°
mild
79°
78°
78°
78°
77°
77°
77°
80°
83°
85°
86°
86°
86°
86°
86°
85°
79°
82°
83°
82°
81°
80°
79°
79°
79°
79°
79°
79°
78°
77°
77°
80°
83°
84°
85°
89°
92°
93°
92°
88°
88°
87°
84°
80°
80°
80°
79°
78°
78°
78°
77°
77°
76°
76°
78°
82°
84°
85°
87°
88°
88°
90°
90°
89°
86°
85°
84°
80°
79°
79°
78°
78°
78°
78°
78°
78°
77°
77°
79°
83°
85°
85°
88°
89°
88°
89°
85°
84°
85°
85°
83°
80°
78°
78°
78°
78°
77°
77°
77°
78°
78°
77°
79°
83°
85°
87°
87°
87°
88°
88°
89°
89°
87°
85°
WIND
mph · gust · dir
6mph ESE
G 10 mph
6
G10
ESE
5
G9
E
5
G9
SE
3
G7
ESE
3
G7
ESE
3
G7
SE
5
G6
NE
4
G5
ENE
3
ESE
2
SSE
4
SSW
5
G6
SW
7
WSW
7
G8
WSW
7
SSW
6
G8
S
14
G15
ESE
8
G10
SW
7
G9
SW
4
G5
SSW
3
G5
SSW
6
G7
NW
3
G7
NNW
4
G9
W
6
G8
SW
7
G9
SW
6
G8
W
3
G5
WSW
2
G5
W
4
G5
NE
3
G4
NE
5
G9
NNE
6
G9
N
8
G9
WNW
8
G10
WSW
6
G7
SW
6
SW
8
SSW
11
SSW
12
SW
11
SW
10
G11
SW
8
G11
SSW
6
G11
SSW
6
G11
SSW
6
G10
WSW
5
G9
W
4
G7
W
3
G6
WSW
3
G5
WSW
3
G5
W
2
G4
W
1
G3
WSW
1
G2
SSW
1
G2
SSW
2
G3
S
4
SSW
4
SW
4
G5
SW
4
G7
SW
7
G9
SW
7
G10
SW
8
G10
SSW
10
SSW
10
SSW
8
G10
SSW
7
G10
SW
6
G11
SW
5
G11
SW
5
G8
SW
6
G7
WSW
4
G8
WSW
4
G7
SW
5
G7
SW
4
G5
SW
4
G6
SW
4
G6
SW
4
G7
SW
3
G10
SSW
4
G10
SSW
5
G9
SW
7
G8
SW
7
SSW
10
SSW
10
SW
9
G10
SW
10
SW
10
SW
9
SW
9
G10
SSW
8
G10
SSW
6
G11
SSW
6
G10
SSW
6
G11
SSW
6
G13
SSW
4
G12
SSW
4
G9
SW
4
G9
SW
4
G8
SW
4
G7
SW
4
G8
SSW
4
G10
SSW
4
G10
S
4
G9
S
6
G8
SSW
7
SSW
9
SSW
10
SW
10
SW
10
SW
10
SW
10
SSW
10
SSW
9
G10
SSW
PRECIP
chance %
2%
2%
4%
2%
2%
3%
2%
5%
7%
7%
6%
11%
15%
15%
20%
21%
14%
11%
13%
5%
2%
1%
1%
1%
1%
1%
1%
1%
1%
1%
3%
4%
25%
25%
25%
25%
25%
25%
12%
12%
12%
12%
12%
12%
3%
3%
3%
3%
3%
3%
12%
12%
12%
12%
12%
12%
37%
37%
37%
37%
37%
37%
34%
34%
34%
34%
34%
34%
5%
5%
5%
5%
5%
5%
26%
26%
26%
26%
26%
26%
22%
22%
22%
22%
22%
22%
11%
11%
11%
11%
11%
11%
2%
2%
2%
2%
2%
2%
7%
7%
7%
7%
7%
7%
11%
11%
11%
11%
11%
11%
7%
7%
7%
7%
7%
CLOUDS
cover %
8%
clear
8%
6%
2%
0%
1%
7%
2%
18%
13%
7%
0%
0%
2%
5%
30%
100%
100%
71%
21%
100%
100%
100%
100%
100%
100%
100%
56%
6%
5%
40%
79%
86%
93%
100%
75%
50%
25%
0%
59%
54%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
13%
31%
79%
100%
100%
100%
100%
100%
42%
5%
0%
0%
0%
10%
5%
16%
14%
8%
8%
15%
12%
17%
15%
0%
5%
6%
46%
92%
100%
13%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
10%
0%
0%
23%
14%
35%
45%
5%
0%
0%
0%
2%
3%
4%
PRESSURE
hPa · trend
1017
1017101810191017101710171017101510151015101610141015101510171015101610171018
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Too Hot
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
06:09 AM
SUNSET
08:09 PM
14H 0M OF DAYLIGHT19H 12M REMAINING
MOON PHASE
Waning Gibbous
90% illuminated

Station Location

29.4303, -91.3339
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-03 00:57 UTC
Site #073816525·USGS

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