Waterlands
Big River
USGS · 07018500
BIG RIVER
USGS · 07018500LIVE

Big River at Byrnesville, MO

JEFFERSON COUNTY, MO38.3917°N, -90.6378°W Updated 9 hr ago
FLOW RATE
2,779cfs
GAUGE HT
8.66ft
AIR TEMP
71°F
WIND
6mph N
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
2,779cfs 14.8% vs avg
Optimal band: 252–342 cfs
PERIOD HIGH
2,779cfs
PERIOD LOW
230cfs
RUNNABLE
74%
last 30 day in band

Gauge Height

8.66ft
Precipitation History
Your History · Big River at Byrnesville, MO

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Weather Conditions
WEATHER CONDITIONS
TODAY
88°
70°
MON
89°
69°
TUE
90°
68°
WED
90°
70°
THU
92°
71°
FRI
95°
73°
SAT
96°
75°
TIME
SUN
9
NOW
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
7
pm
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
TEMP
hourly forecast
77°
mild
77°
80°
82°
84°
85°
86°
87°
88°
88°
87°
84°
81°
78°
76°
75°
74°
73°
72°
71°
70°
70°
69°
71°
75°
79°
82°
85°
86°
87°
88°
89°
89°
89°
88°
85°
82°
79°
77°
74°
72°
70°
69°
68°
68°
68°
68°
70°
75°
78°
82°
85°
87°
88°
90°
90°
90°
89°
87°
84°
79°
76°
75°
74°
73°
72°
71°
71°
70°
70°
70°
73°
77°
80°
82°
82°
84°
88°
90°
90°
90°
90°
88°
84°
79°
75°
74°
73°
73°
72°
72°
71°
71°
71°
71°
73°
77°
81°
84°
87°
89°
91°
92°
92°
89°
84°
81°
81°
79°
78°
77°
76°
75°
74°
73°
73°
WIND
mph · gust · dir
7mph NE
G 15 mph
7
G15
NE
6
G11
NNE
6
G9
N
6
G9
N
6
G8
NNE
7
G9
NNE
7
G9
NNE
6
G9
NNE
6
G9
NNE
7
G10
NNE
7
G13
NE
5
G13
NE
5
G11
NNE
4
G10
NNE
5
G9
N
5
G10
NNE
5
G9
N
5
G9
N
5
G8
N
5
G8
N
5
G8
N
6
G9
N
5
G9
NNE
5
G13
NNE
6
G13
NE
6
G11
NE
8
G11
NE
9
G13
NE
9
G13
NE
8
G11
NE
8
G11
NE
8
G13
NE
8
G11
NE
7
G11
NE
6
G11
NE
5
G14
NE
4
G8
NE
4
G7
ENE
4
G7
NE
4
G6
NE
3
G5
NE
2
NNE
3
G4
NNE
3
G4
N
3
NNE
3
NNE
3
G11
N
6
G10
NNE
6
G10
NE
7
G10
NE
8
G10
ENE
8
G11
ENE
9
G12
E
9
G13
E
9
G13
E
9
G12
E
9
G12
E
8
G10
E
7
G13
E
5
G6
E
4
ENE
4
ENE
3
ENE
3
ENE
3
ENE
3
ENE
3
NE
3
ENE
2
G3
ENE
2
NE
2
G3
ENE
3
G5
ENE
4
G7
ENE
6
G8
ENE
6
G8
E
6
G9
ESE
7
G9
ESE
7
G8
ESE
8
E
8
E
7
E
7
E
5
G8
ESE
4
G5
SE
3
G4
SSE
2
G3
SSE
3
SSE
2
G3
S
2
G3
S
2
S
2
SSW
0
SW
1
NE
1
SSW
0
NE
1
G2
E
2
G4
E
3
G4
ESE
4
ESE
5
E
5
E
5
E
4
ENE
3
G8
NE
3
G7
NNE
2
G3
NE
2
E
2
SE
2
SSE
2
S
2
SSW
2
SW
2
G3
WSW
3
W
3
WSW
PRECIP
chance %
0%
0%
0%
0%
0%
0%
0%
0%
2%
2%
2%
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%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
4%
4%
4%
4%
4%
4%
0%
0%
0%
0%
0%
0%
2%
2%
2%
2%
2%
2%
5%
5%
5%
5%
5%
5%
3%
3%
3%
3%
3%
3%
0%
0%
CLOUDS
cover %
2%
clear
2%
4%
3%
17%
16%
10%
14%
10%
3%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
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%
6%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
6%
0%
0%
48%
44%
5%
0%
22%
32%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
26%
28%
46%
87%
100%
100%
100%
100%
100%
94%
85%
71%
48%
20%
0%
0%
0%
PRESSURE
hPa · trend
1003
10031003100210041005100410031004100410021002100210021000999100010019999991000
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Warm
Wind
Light
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:27 PM
14H 38M OF DAYLIGHT
MOON PHASE
Waning Crescent
6% illuminated

Station Location

38.3917, -90.6378
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #07018500·USGS

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