USGS · 04116000

GRAND RIVER

USGS · 04116000LIVE

GRAND RIVER AT IONIA, MI

IONIA TOWNSHIP, MI42.9720°N, -85.0692°W Updated 20 hr ago

FLOW RATE

1,179cfs

AIR TEMP

84°F

WIND

5mph SSE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

1,179cfs 27.0% vs avg

Optimal band: 1,226–1,658 cfs

PERIOD HIGH

2,264cfs

PERIOD LOW

1,111cfs

RUNNABLE

58%

last 30 day in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

19.4in

≈ normal

19.36 in of precipitation so far this year — about average for this point in the season (normal 18.15 in).

YTD Total

19.4in

This year so far

Normal to Date

18.1in

30-yr average

Typical Range

13.8–21.8in

10th–90th pct YTD

Departure

+7%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 2.22" · normal 2.38" (1.0–4.2)

Jan

Feb: 1.00" · normal 1.96" (0.9–3.4)

Feb

Mar: 4.31" · normal 2.39" (1.0–3.6)

Mar

Apr: 6.05" · normal 3.82" (2.4–5.7)

Apr

May: 1.32" · normal 4.01" (1.9–6.3)

May

Jun: 4.46" (so far)· normal 3.71" (1.9–5.2)

Jun

Jul: normal 3.28" (1.9–4.2)

Jul

Aug: normal 3.33" (1.7–5.5)

Aug

Sep: normal 2.80" (1.1–4.8)

Sep

Oct: normal 3.19" (1.4–5.5)

Oct

Nov: normal 2.60" (1.4–4.5)

Nov

Dec: normal 2.22" (1.0–3.3)

Dec

Baseline 1991–2020 · Source: Open-Meteo07:21 PM

Your History · GRAND RIVER AT IONIA, MI

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Weather Conditions

WEATHER CONDITIONS

TODAY

85°

60°

MON

94°

68°

TUE

91°

76°

WED

92°

76°

THU

93°

75°

FRI

93°

74°

SAT

94°

74°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

82°

mild

82°

80°

77°

75°

74°

73°

71°

70°

68°

69°

72°

75°

79°

81°

80°

82°

87°

91°

93°

94°

93°

91°

87°

83°

81°

80°

79°

78°

77°

76°

77°

81°

84°

87°

89°

91°

90°

89°

87°

85°

82°

81°

80°

79°

78°

77°

76°

78°

81°

84°

86°

88°

89°

90°

91°

92°

91°

89°

87°

83°

81°

80°

78°

76°

75°

76°

79°

82°

85°

87°

89°

91°

93°

91°

90°

87°

83°

81°

80°

79°

78°

77°

76°

75°

74°

75°

79°

81°

84°

87°

89°

91°

92°

93°

WIND

mph · gust · dir

6mph SE

G 10 mph

G10

ESE

NNE

ESE

G14

SSE

G16

SSE

G17

SSE

G10

ENE

G16

SSE

G18

SSE

G17

SSE

G13

G11

G15

ENE

G17

ESE

G23

SSE

G23

G24

SSW

G24

SSW

G23

SSW

G21

SSW

G19

SSW

G11

SSW

G11

G13

G15

SSW

G15

SSW

G15

SSW

G15

SSW

G15

SSW

G16

SSW

G16

G18

G26

G25

G22

G23

WSW

G22

WSW

G22

WSW

G23

WSW

G24

G25

G26

G29

G32

G34

WSW

G33

WSW

G33

WSW

G32

WSW

G32

WSW

G31

WSW

G30

WSW

G29

WSW

G28

WSW

G26

WSW

G22

WSW

G21

WSW

G20

WSW

G20

WSW

G20

WSW

G20

WSW

G20

WSW

G22

WSW

G22

WSW

G22

WSW

G22

G24

G27

G29

G27

G26

G25

G26

G27

G26

G23

G20

G19

G18

WSW

G18

G19

WSW

G19

WSW

G20

WSW

G19

WSW

G20

WSW

G20

G22

G23

G22

G18

WSW

G13

WSW

G14

WSW

G14

WSW

G13

WSW

G12

WSW

G11

G12

WSW

G13

WSW

G14

WSW

PRECIP

chance %

10%

13%

19%

15%

14%

21%

19%

20%

CLOUDS

cover %

75%

mostly

75%

100%

11%

100%

92%

100%

83%

100%

41%

100%

98%

78%

80%

96%

100%

77%

91%

99%

100%

17%

100%

16%

18%

61%

100%

35%

100%

12%

87%

25%

11%

67%

100%

25%

13%

100%

40%

18%

16%

18%

31%

40%

36%

28%

21%

20%

PRESSURE

hPa · trend

991

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Stable

Moon Phase

Peak Activity

DAYLIGHT

SUNRISE

06:03 AM

SUNSET

09:23 PM

15H 20M OF DAYLIGHT1H 5M REMAINING

MOON PHASE

Full Moon

98% illuminated

PEAK ACTIVITY

Station Location

42.9720, -85.0692

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DATA · USGS · NOAA · NWSUPDATED 2026-06-28 20:18 UTC

Site #04116000·USGS

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