USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 05486400 Middle River at Martensdale, IA

Warren County, Iowa

Hydrologic Unit Code 07100008

Latitude 41°22'00", Longitude 93°44'00" NAD27

Drainage area 451.00 square miles

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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
17	1977-07-06 12:40	CDT	Yes	JLR	USGS	0.16	-36.17			Unspecified		NONE
16	1976-10-12 11:30	CDT	Yes	PJS	USGS	4.26	4.26			Unspecified	Clear	NONE
15	1975-08-13 13:40	CDT	Yes	MAM	USGS	23.3	35.72			Fair	Clear	NONE
14	1974-09-23 13:55	CDT	Yes	VEM	USGS	8.78	35.20	0.00	0.30	Good	Clear	NONE
13	1971-08-24 13:15	CDT	Yes	CAF	USGS	8.66	35.91			Good	Clear	NONE
12	1970-07-28 13:56	CDT	Yes	--G	USGS	1.50	35.79	0.00	0.30	Unspecified	Clear	NONE
11	1968-03-12 13:10	CST	Yes	GGP/REH	USGS	39.1	35.09	0.02	0.30	Good	Clear	NONE
10	1966-08-29 12:50	CST	Yes	DER	USGS	9.44	35.60	0.00	0.30	Good	Clear	NONE
9	1964-10-13 13:10	CST	Yes	JTF	USGS	89.8	34.90	0.00	0.50	Unspecified	Clear	NONE
8	1963-10-29 -- --	--	Yes	SJM	USGS	4.22				Fair	Clear	NONE
7	1961-10-17 10:30	CST	Yes	SJM	USGS	207	34.15			Good	Clear	NONE
6	1961-10-10 07:30	CST	Yes	SJM	USGS	74.1	35.20			Good	Clear	NONE
5	1960-09-14 08:00	CST	Yes	--S	USGS	17.5	-35.44			Excellent	Clear	NONE
4	1959-10-23 15:15	CST	Yes	DER	USGS	17.0	-35.36	0.00		Unspecified	Clear	NONE
3	1958-10-28 08:00	CST	Yes	SJM	USGS	39.2	34.54			Good	Clear	NONE
2	1958-03-27 10:25	CST	Yes	DER	USGS	64.2	-34.36	0.00		Unspecified		NONE
1	1957-09-25 11:00	CST	Yes	AEC	USGS	2.50	35.33	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

1977-07-06 12:40

CDT

Yes

JLR

USGS

0.16

-36.17

Unspecified

NONE

1976-10-12 11:30

CDT

Yes

PJS

USGS

4.26

Unspecified

Clear

NONE

1975-08-13 13:40

CDT

Yes

MAM

USGS

23.3

35.72

Fair

Clear

NONE

1974-09-23 13:55

CDT

Yes

VEM

USGS

8.78

35.20

0.00

0.30

Good

Clear

NONE

1971-08-24 13:15

CDT

Yes

CAF

USGS

8.66

35.91

Good

Clear

NONE

1970-07-28 13:56

CDT

Yes

--G

USGS

1.50

35.79

0.00

0.30

Unspecified

Clear

NONE

1968-03-12 13:10

CST

Yes

GGP/REH

USGS

39.1

35.09

0.02

0.30

Good

Clear

NONE

1966-08-29 12:50

CST

Yes

DER

USGS

9.44

35.60

0.00

0.30

Good

Clear

NONE

1964-10-13 13:10

CST

Yes

JTF

USGS

89.8

34.90

0.00

0.50

Unspecified

Clear

NONE

1963-10-29 -- --

Yes

SJM

USGS

4.22

Fair

Clear

NONE

1961-10-17 10:30

CST

Yes

SJM

USGS

207

34.15

Good

Clear

NONE

1961-10-10 07:30

CST

Yes

SJM

USGS

74.1

35.20

Good

Clear

NONE

1960-09-14 08:00

CST

Yes

--S

USGS

17.5

-35.44

Excellent

Clear

NONE

1959-10-23 15:15

CST

Yes

DER

USGS

17.0

-35.36

0.00

Unspecified

Clear

NONE

1958-10-28 08:00

CST

Yes

SJM

USGS

39.2

34.54

Good

Clear

NONE

1958-03-27 10:25

CST

Yes

DER

USGS

64.2

-34.36

0.00

Unspecified

NONE

1957-09-25 11:00

CST

Yes

AEC

USGS

2.50

35.33

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: 2025-10-02 17:40:09 EDT
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