USGS · 05451500

IOWA RIVER

USGS · 05451500LIVE

Iowa River at Marshalltown, IA

MARSHALLTOWN, IA42.0658°N, -92.9077°W Updated 15 hr ago

FLOW RATE

1,248cfs

AIR TEMP

86°F

WIND

16mph S

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

1,248cfs 37.4% vs avg

Optimal band: 1,428–1,932 cfs

PERIOD HIGH

2,566cfs

PERIOD LOW

1,193cfs

RUNNABLE

38%

last 7 day in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

19.5in

≈ normal

19.48 in of precipitation so far this year — about average for this point in the season (normal 19.92 in).

YTD Total

19.5in

This year so far

Normal to Date

19.9in

30-yr average

Typical Range

15.5–24.4in

10th–90th pct YTD

Departure

-2%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.48" · normal 1.29" (0.7–2.0)

Jan

Feb: 0.85" · normal 1.50" (0.5–2.4)

Feb

Mar: 2.15" · normal 2.48" (1.1–4.4)

Mar

Apr: 6.76" · normal 4.34" (3.0–6.7)

Apr

May: 2.58" · normal 5.24" (2.9–8.7)

May

Jun: 5.66" (so far)· normal 5.22" (2.1–9.0)

Jun

Jul: normal 3.94" (1.5–6.4)

Jul

Aug: normal 4.07" (1.4–7.2)

Aug

Sep: normal 3.64" (1.4–6.6)

Sep

Oct: normal 2.88" (0.8–5.4)

Oct

Nov: normal 2.10" (0.7–4.5)

Nov

Dec: normal 1.60" (0.6–2.6)

Dec

Baseline 1991–2020 · Source: Open-Meteo02:35 PM

Your History · Iowa River at Marshalltown, IA

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Weather Conditions

WEATHER CONDITIONS

TODAY

92°

75°

TUE

94°

76°

WED

88°

74°

THU

90°

75°

FRI

89°

74°

SAT

91°

74°

SUN

86°

68°

TIME

MON

NOW

TUE

WED

THU

FRI

SAT

TEMP

hourly forecast

92°

mild

92°

90°

88°

85°

83°

82°

81°

80°

79°

77°

76°

78°

81°

84°

87°

89°

91°

93°

94°

92°

90°

87°

85°

83°

82°

80°

79°

78°

76°

74°

75°

77°

79°

82°

84°

85°

87°

88°

86°

84°

82°

81°

80°

79°

78°

77°

75°

78°

80°

82°

84°

86°

88°

89°

90°

89°

87°

85°

83°

81°

80°

79°

78°

77°

76°

75°

74°

75°

78°

81°

83°

85°

87°

88°

89°

88°

85°

83°

81°

79°

78°

77°

76°

75°

74°

75°

77°

80°

WIND

mph · gust · dir

19mph S

G 29 mph

G29

G30

G31

G32

G29

G19

G20

G19

G20

SSW

G17

SSW

G15

G14

SSW

G19

SSW

G21

SSW

G24

SSW

G24

SSW

G21

SSW

G22

SSW

G22

G24

G23

G25

G23

G22

G20

G13

G10

SSW

G13

SSW

G17

SSW

G17

SSW

G18

G16

SSW

G16

SSW

G17

SSW

G21

SSW

G23

G30

SSW

G36

SSW

G36

SSW

G32

SSW

G30

SSW

G32

SSW

G30

SSW

G30

G29

SSW

G30

SSW

G30

SSW

G31

SSW

G32

SSW

G34

SSW

G35

SSW

G35

SSW

G36

SSW

G35

SSW

G34

SSW

G35

SSW

G34

SSW

G33

SSW

G32

SSW

G31

SSW

G32

SSW

G29

SSW

G25

G21

G19

G18

G17

G14

G13

SSW

G15

G19

G22

G23

G27

G28

G30

G32

G31

G30

G34

SSW

G32

G31

G32

SSW

G32

SSW

G28

SSW

G26

SSW

G23

SSW

G20

SSW

G21

SSW

G22

SSW

G21

SSW

G20

SSW

G20

G22

G24

G26

G27

G29

G31

G29

G30

G31

G30

SSW

G23

G14

ESE

G11

SSE

G15

PRECIP

chance %

11%

10%

21%

13%

46%

20%

10%

14%

34%

19%

13%

16%

17%

CLOUDS

cover %

clear

98%

100%

80%

100%

70%

99%

100%

70%

53%

16%

100%

47%

100%

34%

100%

90%

100%

45%

61%

100%

64%

82%

100%

21%

88%

100%

60%

100%

23%

46%

21%

68%

100%

93%

100%

26%

100%

78%

100%

10%

100%

20%

35%

59%

87%

100%

86%

58%

PRESSURE

hPa · trend

976

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Moderate

Pressure

Stable

Moon Phase

Peak Activity

DAYLIGHT

SUNRISE

05:38 AM

SUNSET

08:51 PM

15H 13M OF DAYLIGHT5H 13M REMAINING

MOON PHASE

Full Moon

100% illuminated

PEAK ACTIVITY

Station Location

42.0658, -92.9077

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DATA · USGS · NOAA · NWSUPDATED 2026-06-29 15:38 UTC

Site #05451500·USGS

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