USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 06818700 Platte River near Knowlton, IA

Ringgold County, Iowa

Hydrologic Unit Code 10240012

Latitude 40°52'15", Longitude 94°25'42" NAD27

Drainage area 179 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
17	1977-07-19 11:50	CDT	Yes	RDB	USGS	0.10	29.44			Fair	Clear	NONE
16	1976-09-21 11:30	CDT	Yes	RDB	USGS	2.78	29.69			Good	Clear	NONE
15	1975-09-23 14:30	CDT	Yes	RDB	USGS	2.20	29.73			Fair	Clear	NONE
14	1973-09-23 11:10	CDT	Yes	RDB	USGS	0.42	29.76			Poor	Clear	NONE
13	1971-08-24 11:55	CDT	Yes	OJR	USGS	1.48	-29.22			Good	Clear	NONE
12	1970-07-08 08:50	CDT	Yes	OJR	USGS	3.72	-28.90			Good	Clear	NONE
11	1969-09-22 12:55	CDT	Yes	ARC	USGS	2.62	28.86			Good	Clear	NONE
10	1968-03-12 13:05	CST	Yes	DAS	USGS	8.25	28.68			Good	Clear	NONE
9	1967-12-13 08:45	CST	Yes	DAS	USGS	3.13	28.10			Good	Clear	NONE
8	1966-08-10 09:35	CDT	Yes	RDB	USGS	6.19	28.56			Unspecified	Clear	NONE
7	1964-10-26 12:15	CST	Yes	FEL	USGS	14.0	21.14			Unspecified	Clear	NONE
6	1963-10-31 13:40	CST	Yes	EDS	USGS	1.59	28.38			Good	Clear	NONE
5	1961-10-25 16:40	CDT	Yes	CWS	USGS	33.2	27.47	0.00	0.20	Fair	Clear	NONE
4	1960-09-13 12:00	CDT	Yes	DJG	USGS	8.67	27.78			Unspecified	Clear	NONE
3	1960-09-12 16:10	CDT	Yes	RDB	USGS	9.07	27.68			Fair	Clear	NONE
2	1959-07-28 15:55	CDT	Yes	FEL	USGS	3.18	27.49			Unspecified	Clear	NONE
1	1958-10-14 11:50	CDT	Yes	FEL	USGS	6.11	28.00			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 11:50

CDT

Yes

RDB

USGS

0.10

29.44

Fair

Clear

NONE

1976-09-21 11:30

CDT

Yes

RDB

USGS

2.78

29.69

Good

Clear

NONE

1975-09-23 14:30

CDT

Yes

RDB

USGS

2.20

29.73

Fair

Clear

NONE

1973-09-23 11:10

CDT

Yes

RDB

USGS

0.42

29.76

Poor

Clear

NONE

1971-08-24 11:55

CDT

Yes

OJR

USGS

1.48

-29.22

Good

Clear

NONE

1970-07-08 08:50

CDT

Yes

OJR

USGS

3.72

-28.90

Good

Clear

NONE

1969-09-22 12:55

CDT

Yes

ARC

USGS

2.62

28.86

Good

Clear

NONE

1968-03-12 13:05

CST

Yes

DAS

USGS

8.25

28.68

Good

Clear

NONE

1967-12-13 08:45

CST

Yes

DAS

USGS

3.13

28.10

Good

Clear

NONE

1966-08-10 09:35

CDT

Yes

RDB

USGS

6.19

28.56

Unspecified

Clear

NONE

1964-10-26 12:15

CST

Yes

FEL

USGS

14.0

21.14

Unspecified

Clear

NONE

1963-10-31 13:40

CST

Yes

EDS

USGS

1.59

28.38

Good

Clear

NONE

1961-10-25 16:40

CDT

Yes

CWS

USGS

33.2

27.47

0.00

0.20

Fair

Clear

NONE

1960-09-13 12:00

CDT

Yes

DJG

USGS

8.67

27.78

Unspecified

Clear

NONE

1960-09-12 16:10

CDT

Yes

RDB

USGS

9.07

27.68

Fair

Clear

NONE

1959-07-28 15:55

CDT

Yes

FEL

USGS

3.18

27.49

Unspecified

Clear

NONE

1958-10-14 11:50

CDT

Yes

FEL

USGS

6.11

28.00

Unspecified

Clear

NONE