USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 06818650 East Platte River near Knowlton, IA

Ringgold County, Iowa

Hydrologic Unit Code 10240012

Latitude 40°53'57", Longitude 94°25'50" NAD27

Drainage area 66.8 square miles

Gage datum 1,140 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
18	1977-07-19 -- --	--	Yes	RDB	USGS	0.00				Unspecified	Clear	NONE
17	1976-09-21 -- --	--	Yes	RDB	USGS	0.00				Unspecified		NONE
16	1975-09-23 15:15	CDT	Yes	RDB	USGS	0.04	26.78			Good	Clear	NONE
15	1974-09-23 14:35	CDT	Yes	RDB	USGS	0.01	23.24			Poor	Clear	NONE
14	1971-08-24 12:35	CDT	Yes	OJR	USGS	0.02	-25.17			Fair	Clear	NONE
13	1970-07-08 08:20	CDT	Yes	OJR	USGS	0.60	-26.37			Good	Clear	NONE
12	1969-09-22 13:25	CDT	Yes	ARC	USGS	5.00	26.22			Good	Clear	NONE
11	1968-03-12 13:45	CST	Yes	DAS	USGS	1.69	24.28			Good	Clear	NONE
10	1967-12-13 08:25	CST	Yes	DAS	USGS	0.00	22.32			Unspecified	Clear	NONE
9	1966-08-10 10:10	CDT	Yes	RDB	USGS	0.66	24.09			Fair	Clear	NONE
8	1964-10-26 11:25	CST	Yes	FEL	USGS	4.87	23.63			Unspecified	Clear	NONE
7	1963-10-31 14:10	CST	Yes	EDS	USGS	0.02	24.05			Unspecified	Clear	NONE
6	1961-10-25 17:25	CDT	Yes	CWS	USGS	12.4	25.42	0.00	0.30	Good	Clear	NONE
5	1960-09-13 14:20	CDT	Yes	DJG	USGS	1.85	25.51			Unspecified	Clear	NONE
4	1960-09-12 16:45	CDT	Yes	RDB	USGS	1.99	25.49			Fair	Clear	NONE
3	1959-07-28 16:45	CDT	Yes	FEL	USGS	0.55	25.71			Unspecified	Clear	NONE
2	1958-10-14 11:15	CDT	Yes	FEL	USGS	2.58	25.50			Unspecified	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

1977-07-19 -- --

Yes

RDB

USGS

0.00

Unspecified

Clear

NONE

1976-09-21 -- --

Yes

RDB

USGS

0.00

Unspecified

NONE

1975-09-23 15:15

CDT

Yes

RDB

USGS

0.04

26.78

Good

Clear

NONE

1974-09-23 14:35

CDT

Yes

RDB

USGS

0.01

23.24

Poor

Clear

NONE

1971-08-24 12:35

CDT

Yes

OJR

USGS

0.02

-25.17

Fair

Clear

NONE

1970-07-08 08:20

CDT

Yes

OJR

USGS

0.60

-26.37

Good

Clear

NONE

1969-09-22 13:25

CDT

Yes

ARC

USGS

5.00

26.22

Good

Clear

NONE

1968-03-12 13:45

CST

Yes

DAS

USGS

1.69

24.28

Good

Clear

NONE

1967-12-13 08:25

CST

Yes

DAS

USGS

0.00

22.32

Unspecified

Clear

NONE

1966-08-10 10:10

CDT

Yes

RDB

USGS

0.66

24.09

Fair

Clear

NONE

1964-10-26 11:25

CST

Yes

FEL

USGS

4.87

23.63

Unspecified

Clear

NONE

1963-10-31 14:10

CST

Yes

EDS

USGS

0.02

24.05

Unspecified

Clear

NONE

1961-10-25 17:25

CDT

Yes

CWS

USGS

12.4

25.42

0.00

0.30

Good

Clear

NONE

1960-09-13 14:20

CDT

Yes

DJG

USGS

1.85

25.51

Unspecified

Clear

NONE

1960-09-12 16:45

CDT

Yes

RDB

USGS

1.99

25.49

Fair

Clear

NONE

1959-07-28 16:45

CDT

Yes

FEL

USGS

0.55

25.71

Unspecified

Clear

NONE

1958-10-14 11:15

CDT

Yes

FEL

USGS

2.58

25.50

Unspecified

Clear

NONE