USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 05420720 East Fork Wapsipinicon River near Tripoli, IA

Bremer County, Iowa

Hydrologic Unit Code 07080102

Latitude 42°50'51", Longitude 92°13'48" NAD27

Drainage area 144 square miles

Gage datum 1,000 feet above NGVD29

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Meas. Number	Date Time	Time Datum	Measurement Used?	Who	Measuring Agency	Stream flow (ft³/s)	Gage Height (ft)	GH Change (ft)	Meas. Duration (hr)	Meas. Rated	Control	Flow Adjust. Code
16	1998-05-19 14:20	CDT	Yes	JFN/JSK	USGS	91.2	16.39	0.00	0.60	Good		NONE
15	1997-08-28 09:25	CDT	Yes	PDL/ES	USGS	19.7				Poor	Clear	NONE
14A	1977-07-13 15:20	CDT	Yes	REH	USGS	6.52	18.21			Good	Clear	NONE
14	1976-08-30 11:45	CDT	Yes	JLR	USGS	3.14				Fair	Clear	NONE
13	1974-10-01 07:40	CDT	Yes	VEM	USGS	14.7	14.91	0.00	0.40	Good	Clear	NONE
12	1973-09-13 12:40	CDT	Yes	PJV	USGS	13.8	14.95	0.00	0.40	Good	Clear	NONE
11	1971-09-01 14:25	CDT	Yes	CAF	USGS	13.3	15.10	0.00		Good	Clear	NONE
10	1968-06-10 13:30	CST	Yes	JTF	USGS	16.4	15.05			Good	Clear	NONE
9	1966-10-12 15:35	CST	Yes	DER	USGS	8.91	-15.91	0.00		Good	Clear	NONE
8	1966-10-05 15:25	CST	Yes	DER	USGS	10.8	-15.16			Good	Clear	NONE
7	1964-08-14 08:45	CST	Yes	DER	USGS	4.53	-15.57			Good	Clear	NONE
6	1961-08-29 10:55	CST	Yes	--S	USGS	27.1	-14.74	0.00	0.60	Good	Clear	NONE
5	1960-08-08 13:30	CST	Yes	DER/DJG	USGS	18.1	-15.18	0.00		Unspecified	Clear	NONE
4	1959-09-16 16:30	CST	Yes	DER	USGS	17.6	-15.10	0.00		Unspecified	Clear	NONE
3	1958-10-09 15:30	CST	Yes	DER	USGS	9.05	-15.40	0.00	0.30	Unspecified	Clear	NONE
2	1958-05-09 09:40	CST	Yes	AEC	USGS	16.5	-15.29	0.00	0.30	Good	Clear	NONE
1	1957-09-24 10:00	CST	Yes	SJM	USGS	14.4	14.72	0.00	0.30	Good	Clear	NONE

Meas.
Number

Date Time

Time
Datum

Measurement
Used?

Who

Measuring
Agency

Stream
flow
(ft³/s)

Gage
Height
(ft)

GH
Change
(ft)

Meas.
Duration
(hr)

Meas.
Rated

Control

Flow
Adjust.
Code

1998-05-19 14:20

CDT

Yes

JFN/JSK

USGS

91.2

16.39

0.00

0.60

Good

NONE

1997-08-28 09:25

CDT

Yes

PDL/ES

USGS

19.7

Poor

Clear

NONE

14A

1977-07-13 15:20

CDT

Yes

REH

USGS

6.52

18.21

Good

Clear

NONE

1976-08-30 11:45

CDT

Yes

JLR

USGS

3.14

Fair

Clear

NONE

1974-10-01 07:40

CDT

Yes

VEM

USGS

14.7

14.91

0.00

0.40

Good

Clear

NONE

1973-09-13 12:40

CDT

Yes

PJV

USGS

13.8

14.95

0.00

0.40

Good

Clear

NONE

1971-09-01 14:25

CDT

Yes

CAF

USGS

13.3

15.10

0.00

Good

Clear

NONE

1968-06-10 13:30

CST

Yes

JTF

USGS

16.4

15.05

Good

Clear

NONE

1966-10-12 15:35

CST

Yes

DER

USGS

8.91

-15.91

0.00

Good

Clear

NONE

1966-10-05 15:25

CST

Yes

DER

USGS

10.8

-15.16

Good

Clear

NONE

1964-08-14 08:45

CST

Yes

DER

USGS

4.53

-15.57

Good

Clear

NONE

1961-08-29 10:55

CST

Yes

--S

USGS

27.1

-14.74

0.00

0.60

Good

Clear

NONE

1960-08-08 13:30

CST

Yes

DER/DJG

USGS

18.1

-15.18

0.00

Unspecified

Clear

NONE

1959-09-16 16:30

CST

Yes

DER

USGS

17.6

-15.10

0.00

Unspecified

Clear

NONE

1958-10-09 15:30

CST

Yes

DER

USGS

9.05

-15.40

0.00

0.30

Unspecified

Clear

NONE

1958-05-09 09:40

CST

Yes

AEC

USGS

16.5

-15.29

0.00

0.30

Good

Clear

NONE

1957-09-24 10:00

CST

Yes

SJM

USGS

14.4

14.72

0.00

0.30

Good

Clear

NONE

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: Iowa Water Data Support Team
Page Last Modified: 2025-11-05 11:33:10 EST
0.28 0.27 caww01