Waterlands
Mazon River
USGS · 05542000
MAZON RIVER
USGS · 05542000LIVE

MAZON RIVER NEAR COAL CITY, IL

GRUNDY COUNTY, IL41.2862°N, -88.3599°W Updated 43 min ago
FLOW RATE
298cfs
GAUGE HT
2.49ft
AIR TEMP
79°F
WIND
6mph SW
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
298cfs 43.2% vs avg
Optimal band: 286388 cfs
PERIOD HIGH
375cfs
PERIOD LOW
298cfs
RUNNABLE
100%
last 1 day in band

Gauge Height

2.49ft
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

23.2in

≈ normal

23.24 in of precipitation so far this year — about average for this point in the season (normal 20.78 in).

YTD Total

23.2in

This year so far

Normal to Date

20.8in

30-yr average

Typical Range

14.1–25.8in

10th–90th pct YTD

Departure

+12%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 1.32" · normal 2.29" (1.0–3.8)
Jan
Feb: 0.44" · normal 2.02" (0.7–3.1)
Feb
Mar: 4.14" · normal 2.88" (1.5–4.7)
Mar
Apr: 6.37" · normal 4.25" (2.7–6.4)
Apr
May: 1.45" · normal 4.69" (2.2–7.8)
May
Jun: 9.47" · normal 4.48" (1.9–7.2)
Jun
Jul: 0.05" (so far)· normal 3.78" (1.8–5.6)
Jul
Aug: normal 3.57" (2.0–6.0)
Aug
Sep: normal 3.03" (1.1–4.8)
Sep
Oct: normal 3.31" (1.6–6.7)
Oct
Nov: normal 2.78" (1.5–5.0)
Nov
Dec: normal 2.19" (1.3–3.7)
Dec
Baseline 19912020 · Source: Open-Meteo06:08 AM
Your History · MAZON RIVER NEAR COAL CITY, IL

Track your history

Sign in to track your sessions at MAZON RIVER NEAR COAL CITY, IL — best days, monthly trends, and time on the water.

Sign in
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
93°
77°
FRI
90°
73°
SAT
90°
68°
SUN
81°
69°
MON
76°
62°
TUE
81°
63°
WED
83°
65°
TIME
THU
7
NOW
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
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
TEMP
hourly forecast
80°
mild
80°
83°
85°
88°
90°
91°
91°
92°
93°
93°
92°
91°
89°
86°
83°
82°
81°
80°
76°
75°
75°
74°
73°
73°
76°
80°
81°
81°
85°
88°
90°
90°
82°
86°
87°
80°
79°
79°
77°
76°
75°
75°
73°
70°
68°
68°
68°
68°
71°
74°
77°
81°
84°
86°
87°
89°
90°
89°
88°
86°
84°
81°
79°
77°
78°
77°
76°
76°
75°
74°
71°
69°
70°
71°
73°
75°
75°
76°
77°
80°
81°
81°
80°
78°
76°
74°
71°
70°
69°
68°
66°
65°
63°
62°
62°
63°
66°
69°
71°
73°
74°
75°
76°
74°
73°
73°
74°
73°
72°
71°
69°
68°
67°
65°
64°
WIND
mph · gust · dir
8mph SW
G 19 mph
8
G19
SW
9
G19
WSW
9
G16
WSW
7
G15
WSW
8
G14
SW
9
G14
SW
11
G16
SSW
12
G17
SSW
13
G19
SSW
14
G21
SSW
12
G20
SSW
11
G20
SSW
9
G19
SSW
7
G14
SSW
6
G15
S
5
G16
SSW
7
G17
SSW
5
G17
SW
16
G34
WSW
4
G7
S
5
G9
SSW
4
G9
SW
6
G11
S
6
G12
SSW
4
G13
SW
7
G15
SSW
10
G13
NNW
8
G11
NW
3
G10
E
8
G13
SSE
11
G19
SSW
13
G22
SW
15
G28
SSW
13
G26
SSW
12
G23
SW
14
G29
SW
5
G15
SW
7
G9
SW
6
G8
SW
6
SW
5
G7
SW
5
G8
SW
7
G13
SW
7
G16
SW
6
G11
SW
5
G10
SW
6
G8
SW
4
G9
SW
4
G15
WNW
3
G12
S
5
G10
S
5
G9
S
6
G10
S
10
G11
S
10
G13
SSW
10
G14
SSW
11
G15
SSW
11
G16
SSW
9
G16
SSW
10
G19
SW
8
G20
SSW
8
G20
SW
8
G21
SW
8
G16
SW
8
G17
SSW
8
G20
SSW
8
G22
SSW
9
G21
SW
7
G13
W
8
NW
6
G12
WNW
6
G14
NW
5
G16
WNW
9
G17
WNW
14
G15
W
9
G15
WNW
8
G12
N
2
G10
WSW
10
G11
WSW
10
G12
WSW
8
G12
WNW
9
G11
WNW
10
WNW
9
WNW
8
G13
WNW
6
G16
W
7
G20
W
7
G19
NW
7
G10
NW
7
G15
NNW
6
G14
NNW
6
G11
NNW
5
G10
NNW
3
G5
NNW
1
G4
S
3
SW
5
W
7
W
9
WNW
9
WNW
10
WNW
10
WNW
11
WNW
12
NW
11
NW
10
NW
8
G9
NW
6
G8
WNW
6
G8
WNW
6
G8
NW
6
G8
NNW
7
G8
NNW
7
NNW
7
NNW
7
NNW
PRECIP
chance %
2%
2%
2%
2%
2%
1%
1%
1%
1%
1%
1%
4%
7%
2%
5%
6%
5%
12%
17%
19%
18%
21%
18%
13%
8%
12%
18%
14%
11%
11%
13%
18%
45%
45%
45%
45%
45%
45%
43%
43%
43%
43%
43%
43%
48%
48%
48%
48%
48%
48%
32%
32%
32%
32%
32%
32%
64%
64%
64%
64%
64%
64%
54%
54%
54%
54%
54%
54%
47%
47%
47%
47%
47%
47%
9%
9%
9%
9%
9%
9%
18%
18%
18%
18%
18%
18%
6%
6%
6%
6%
6%
6%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
8%
8%
8%
8%
8%
8%
3%
3%
3%
3%
3%
3%
CLOUDS
cover %
19%
few
19%
76%
1%
97%
29%
9%
2%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
98%
81%
100%
100%
100%
100%
100%
97%
100%
100%
80%
78%
100%
50%
25%
99%
92%
34%
100%
100%
100%
100%
100%
100%
46%
5%
0%
6%
100%
100%
100%
12%
0%
0%
6%
100%
11%
13%
33%
12%
18%
5%
66%
7%
38%
100%
95%
7%
5%
100%
100%
15%
9%
100%
100%
100%
100%
100%
100%
88%
37%
10%
70%
75%
16%
0%
0%
0%
0%
5%
0%
0%
0%
0%
0%
0%
0%
0%
10%
55%
79%
100%
87%
100%
100%
100%
100%
100%
100%
100%
100%
100%
76%
43%
18%
PRESSURE
hPa · trend
998
998999996997998997995996996995993992993995993994996996995995
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Warm
Wind
Light
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:24 AM
SUNSET
08:30 PM
15H 6M OF DAYLIGHT13H 2M REMAINING
MOON PHASE
Waning Gibbous
94% illuminated

Station Location

41.2862, -88.3599
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 07:28 UTC
Site #05542000·USGS

Create a free account to save favorites, set flow alerts, and track conditions