USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 06483300 Rock River below Rock Rapids, IA

Lyon County, Iowa

Hydrologic Unit Code 10170204

Latitude 43°24'15", Longitude 96°08'56" NAD27

Drainage area 859 square miles

Gage datum 1,320 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	1976-08-24 16:35	CDT	Yes	JGG	USGS	0.70	26.45			Fair		NONE
17	1975-10-21 10:30	CDT	Yes	MES	USGS	13.7	26.33			Fair	Clear	NONE
16	1974-09-25 11:45	CDT	Yes	MES	USGS	8.17	26.18			Good	Clear	NONE
14	1972-10-16 09:55	CDT	Yes	OJR	USGS	41.0	25.71			Good	Clear	NONE
13	1971-09-01 13:25	CDT	Yes	FEL	USGS	16.5	26.00			Unspecified	Clear	NONE
12	1970-09-01 08:20	CDT	Yes	RDB	USGS	17.0	25.93			Good	Clear	NONE
11	1969-10-09 10:55	CST	Yes	FEL	USGS	33.5	25.42			Good	Clear	NONE
10	1968-09-11 09:10	CST	Yes	DAS	USGS	14.8				Good		NONE
9	1968-06-11 13:45	CST	Yes	EDS	USGS	10.5				Good	Clear	NONE
8	1967-09-11 12:05	CST	Yes	EDS	USGS	6.60	19.96			Good	Clear	NONE
7	1966-08-15 14:40	CST	Yes	EMS	USGS	13.5	19.89			Good	Clear	NONE
6	1961-09-26 08:30	CST	Yes	JLC	USGS	14.8	19.92	0.00	0.30	Fair	Clear	NONE
5	1960-10-10 16:40	CST	Yes	SM	USGS	36.3				Fair		NONE
4	1959-08-12 15:40	CST	Yes	JLC	USGS	7.92	20.08	0.00	0.20	Unspecified	Clear	NONE
3	1958-10-14 09:20	CST	Yes	RHT	USGS	0.46	20.26			Unspecified		NONE
2	1958-05-14 16:25	CST	Yes	CWS	USGS	38.2	19.67	0.00	0.50	Good	Clear	NONE
1	1957-10-01 16:35	CST	Yes	EMF	USGS	33.6	19.75			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

1976-08-24 16:35

CDT

Yes

JGG

USGS

0.70

26.45

Fair

NONE

1975-10-21 10:30

CDT

Yes

MES

USGS

13.7

26.33

Fair

Clear

NONE

1974-09-25 11:45

CDT

Yes

MES

USGS

8.17

26.18

Good

Clear

NONE

1972-10-16 09:55

CDT

Yes

OJR

USGS

41.0

25.71

Good

Clear

NONE

1971-09-01 13:25

CDT

Yes

FEL

USGS

16.5

26.00

Unspecified

Clear

NONE

1970-09-01 08:20

CDT

Yes

RDB

USGS

17.0

25.93

Good

Clear

NONE

1969-10-09 10:55

CST

Yes

FEL

USGS

33.5

25.42

Good

Clear

NONE

1968-09-11 09:10

CST

Yes

DAS

USGS

14.8

Good

NONE

1968-06-11 13:45

CST

Yes

EDS

USGS

10.5

Good

Clear

NONE

1967-09-11 12:05

CST

Yes

EDS

USGS

6.60

19.96

Good

Clear

NONE

1966-08-15 14:40

CST

Yes

EMS

USGS

13.5

19.89

Good

Clear

NONE

1961-09-26 08:30

CST

Yes

JLC

USGS

14.8

19.92

0.00

0.30

Fair

Clear

NONE

1960-10-10 16:40

CST

Yes

USGS

36.3

Fair

NONE

1959-08-12 15:40

CST

Yes

JLC

USGS

7.92

20.08

0.00

0.20

Unspecified

Clear

NONE

1958-10-14 09:20

CST

Yes

RHT

USGS

0.46

20.26

Unspecified

NONE

1958-05-14 16:25

CST

Yes

CWS

USGS

38.2

19.67

0.00

0.50

Good

Clear

NONE

1957-10-01 16:35

CST

Yes

EMF

USGS

33.6

19.75

Unspecified

Clear

NONE