USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 06809330 East Nishnabotna River near Lewis, IA

Cass County, Iowa

Hydrologic Unit Code 10240003

Latitude 41°19'03", Longitude 95°05'11" NAD27

Drainage area 574 square miles

Gage datum 1,120 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
13	1975-09-25 12:15	CDT	Yes	JGG	USGS	63.4	31.80			Fair	Clear	NONE
12	1971-08-31 09:05	CDT	Yes	EDS	USGS	16.4	32.04			Good	Clear	NONE
11	1968-06-19 10:00	CST	Yes	EDS	USGS	12.7	32.00			Good	Clear	NONE
10	1967-05-23 08:10	CST	Yes	FEL	USGS	14.8	31.70			Good	Clear	NONE
9	1966-08-30 13:35	CST	Yes	EDS	USGS	41.8	31.49			Good	Clear	NONE
8	1964-10-27 14:10	CST	Yes	EDS	USGS	84.6	31.20			Good	Clear	NONE
7	1963-11-06 10:40	CST	Yes	RDB	USGS	22.3	31.69			Unspecified	Clear	NONE
6	1961-08-31 15:50	CST	Yes	EDS	USGS	48.3	31.45			Good	Clear	NONE
5	1960-09-15 17:10	CST	Yes	EDS	USGS	109	28.88			Good	Clear	NONE
4	1959-10-20 09:50	CST	Yes	RDB	USGS	39.4	27.91	0.00	0.60	Fair	Clear	NONE
3	1958-10-15 13:10	CST	Yes	EDS	USGS	122	27.79			Good	Clear	NONE
2	1958-05-13 14:15	CST	Yes	JGP	USGS	67.1	27.37	0.00	0.80	Unspecified	Clear	NONE
1	1957-09-24 11:40	CST	Yes	CWS	USGS	36.9	27.65	0.00	0.80	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

1975-09-25 12:15

CDT

Yes

JGG

USGS

63.4

31.80

Fair

Clear

NONE

1971-08-31 09:05

CDT

Yes

EDS

USGS

16.4

32.04

Good

Clear

NONE

1968-06-19 10:00

CST

Yes

EDS

USGS

12.7

32.00

Good

Clear

NONE

1967-05-23 08:10

CST

Yes

FEL

USGS

14.8

31.70

Good

Clear

NONE

1966-08-30 13:35

CST

Yes

EDS

USGS

41.8

31.49

Good

Clear

NONE

1964-10-27 14:10

CST

Yes

EDS

USGS

84.6

31.20

Good

Clear

NONE

1963-11-06 10:40

CST

Yes

RDB

USGS

22.3

31.69

Unspecified

Clear

NONE

1961-08-31 15:50

CST

Yes

EDS

USGS

48.3

31.45

Good

Clear

NONE

1960-09-15 17:10

CST

Yes

EDS

USGS

109

28.88

Good

Clear

NONE

1959-10-20 09:50

CST

Yes

RDB

USGS

39.4

27.91

0.00

0.60

Fair

Clear

NONE

1958-10-15 13:10

CST

Yes

EDS

USGS

122

27.79

Good

Clear

NONE

1958-05-13 14:15

CST

Yes

JGP

USGS

67.1

27.37

0.00

0.80

Unspecified

Clear

NONE

1957-09-24 11:40

CST

Yes

CWS

USGS

36.9

27.65

0.00

0.80

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: 2025-12-22 17:26:44 EST
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