USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 06896100 Grand River at Knowlton, IA

Ringgold County, Iowa

Hydrologic Unit Code 10280101

Latitude 40°50'00", Longitude 94°20'00" NAD27

Drainage area 67.50 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
24	1977-07-19 14:35	CDT	Yes	DAS	USGS	0.01	41.20			Good	Clear	NONE
23	1976-09-21 13:40	CDT	Yes	PJS	USGS	0.19	41.18			Excellent	Clear	NONE
22	1975-08-13 13:40	CDT	Yes	JLR	USGS	0.23	41.09			Unspecified	Clear	NONE
21	1974-09-24 12:30	CDT	Yes	JLR	USGS	0.10	40.36			Unspecified	Clear	NONE
20	1971-09-20 13:30	CDT	Yes	REH	USGS	0.10	35.28			Good		NONE
19	1970-07-28 08:00	CDT	Yes	JGG	USGS	0.17	39.53			Unspecified	Clear	NONE
18	1969-09-22 09:15	CST	Yes	JGG	USGS	0.40	34.67			Unspecified		NONE
17	1968-10-17 10:00	CST	Yes	DAS	USGS	0.45	35.02			Good	Clear	NONE
16	1968-03-12 10:30	CST	Yes	RDB	USGS	0.97	34.71			Fair	Clear	NONE
15	1967-12-13 09:35	CST	Yes	DAS	USGS	0.35	35.02			Fair	Clear	NONE
14	1966-08-10 08:00	CST	Yes	RDB	USGS	1.29	39.52			Unspecified	Clear	NONE
13	1964-10-27 15:50	CST	Yes	DER	USGS	6.35	-38.93			Good	Clear	NONE
12	1963-10-31 13:05	CST	Yes	EDS	USGS	0.17	39.92			Good	Clear	NONE
11	1961-10-25 14:55	CST	Yes	CWS	USGS	11.8	38.81	0.00	0.30	Good	Clear	NONE
10	1960-10-26 14:20	CST	Yes	SJM	USGS	7.27	-38.98			Good	Clear	NONE
9	1960-10-26 13:20	CST	Yes	JGG	USGS	7.41	38.97			Excellent	Clear	NONE
8	1960-10-26 12:40	CST	Yes	--S	USGS	7.53	-38.90			Good	Clear	NONE
7	1960-10-26 11:00	CST	Yes	EDS	USGS	7.23	38.94			Good	Clear	NONE
6	1960-10-26 08:50	CST	Yes	RHT	USGS	7.11	38.96			Unspecified	Clear	NONE
5	1960-09-13 12:00	CST	Yes	JGG	USGS	1.20				Unspecified	Clear	NONE
4	1960-09-12 14:45	CST	Yes	RDB	USGS	0.91	39.13			Fair	Clear	NONE
3	1959-07-29 14:05	CST	Yes	FEL	USGS	1.40	38.81			Unspecified	Clear	NONE
2	1958-10-14 11:45	CST	Yes	FEL	USGS	1.72	38.75			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 14:35

CDT

Yes

DAS

USGS

0.01

41.20

Good

Clear

NONE

1976-09-21 13:40

CDT

Yes

PJS

USGS

0.19

41.18

Excellent

Clear

NONE

1975-08-13 13:40

CDT

Yes

JLR

USGS

0.23

41.09

Unspecified

Clear

NONE

1974-09-24 12:30

CDT

Yes

JLR

USGS

0.10

40.36

Unspecified

Clear

NONE

1971-09-20 13:30

CDT

Yes

REH

USGS

0.10

35.28

Good

NONE

1970-07-28 08:00

CDT

Yes

JGG

USGS

0.17

39.53

Unspecified

Clear

NONE

1969-09-22 09:15

CST

Yes

JGG

USGS

0.40

34.67

Unspecified

NONE

1968-10-17 10:00

CST

Yes

DAS

USGS

0.45

35.02

Good

Clear

NONE

1968-03-12 10:30

CST

Yes

RDB

USGS

0.97

34.71

Fair

Clear

NONE

1967-12-13 09:35

CST

Yes

DAS

USGS

0.35

35.02

Fair

Clear

NONE

1966-08-10 08:00

CST

Yes

RDB

USGS

1.29

39.52

Unspecified

Clear

NONE

1964-10-27 15:50

CST

Yes

DER

USGS

6.35

-38.93

Good

Clear

NONE

1963-10-31 13:05

CST

Yes

EDS

USGS

0.17

39.92

Good

Clear

NONE

1961-10-25 14:55

CST

Yes

CWS

USGS

11.8

38.81

0.00

0.30

Good

Clear

NONE

1960-10-26 14:20

CST

Yes

SJM

USGS

7.27

-38.98

Good

Clear

NONE

1960-10-26 13:20

CST

Yes

JGG

USGS

7.41

38.97

Excellent

Clear

NONE

1960-10-26 12:40

CST

Yes

--S

USGS

7.53

-38.90

Good

Clear

NONE

1960-10-26 11:00

CST

Yes

EDS

USGS

7.23

38.94

Good

Clear

NONE

1960-10-26 08:50

CST

Yes

RHT

USGS

7.11

38.96

Unspecified

Clear

NONE

1960-09-13 12:00

CST

Yes

JGG

USGS

1.20

Unspecified

Clear

NONE

1960-09-12 14:45

CST

Yes

RDB

USGS

0.91

39.13

Fair

Clear

NONE

1959-07-29 14:05

CST

Yes

FEL

USGS

1.40

38.81

Unspecified

Clear

NONE

1958-10-14 11:45

CST

Yes

FEL

USGS

1.72

38.75

Unspecified

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: 2024-11-27 15:27:01 EST
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