USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 02231250 LITTLE ST. MARYS RIVER NR HILLIARD, FLA.

Nassau County, Florida

Hydrologic Unit Code 03070204

Latitude 30°43'55", Longitude 81°53'35" NAD27

Drainage area 19.80 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
34	1987-03-30 -- --	--	Yes	MJS	USGS	197	13.02	0.08	1.00	Good	Clear	NONE
33	1980-03-14 12:40	EST	Yes	MS	USGS	200	13.07	-0.02	0.60	Good		NONE
32	1979-09-13 14:25	EST	Yes	CC	USGS	86.6	12.34	0.00	1.00	Fair		NONE
31	1975-04-11 14:45	EST	Yes	KB	USGS	671	14.31	0.05	0.90	Fair	DebrisLight	NONE
30	1973-06-14 11:30	EST	Yes	DF	USGS	120	12.55	0.00	1.00	Poor		NONE
29	1971-05-21 11:45	EST	Yes	DCC	USGS	0.16	10.64	0.00	0.50	Unspecified		NONE
28	1971-02-08 14:45	EST	Yes	DCC	USGS	268	13.14	0.09	0.80	Fair	DebrisLight	NONE
27	1970-01-07 15:20	EST	Yes	DCC	USGS	271	13.39	-0.02	1.00	Fair	DebrisLight	NONE
26	1967-08-14 12:05	EST	Yes	DCC	USGS	305	13.59	-0.04	1.20	Fair	DebrisLight	NONE
25	1967-06-26 11:35	EST	Yes	DCC	USGS	43.8	11.82	0.01	1.40	Fair	DebrisModerate	NONE
24	1967-03-27 12:05	EST	Yes	DCC	USGS	1.43	10.83	0.00	0.30	Poor	DebrisModerate	NONE
23	1967-02-14 10:35	EST	Yes	DCC	USGS	311	13.64	-0.04	1.00	Fair	DebrisLight	NONE
22	1967-01-04 15:10	EST	Yes	DLC	USGS	285	13.50	3.02	1.20	Good		NONE
21	1966-09-29 12:40	EST	Yes	DLC	USGS	91.2	12.24	0.03	1.30	Poor		NONE
20	1966-08-24 10:35	EST	Yes	PWP	USGS	7.26	11.08	-0.01	0.80	Poor	DebrisModerate	NONE
19	1966-07-20 08:55	EST	Yes	WLF	USGS	23.4	11.50	-0.01	1.10	Poor	DebrisHeavy	NONE
18	1966-06-15 11:15	EST	Yes	DCC	USGS	17.7	11.52	-0.01	0.70	Poor	DebrisLight	NONE
17	1966-04-07 11:15	EST	Yes	WLF	USGS	26.3	11.52	-0.01	1.40	Poor	Clear	NONE
16	1966-02-16 12:00	EST	Yes	LEL	USGS	16.7	11.42	-0.01	1.40	Poor		NONE
15	1966-01-05 12:30	EST	Yes	LEL	USGS	9.74	11.19	0.00	1.00	Fair	DebrisModerate	NONE
14	1965-11-24 11:10	EST	Yes	PEM	USGS	10.0	11.20	0.00	1.20	Fair		NONE
13	1965-10-01 11:50	EST	Yes	LEL	USGS	178	12.95	-0.02	1.50	Good		NONE
12	1965-08-19 10:00	EST	Yes	LEL	USGS	34.4	11.66	-0.01	0.90	Fair	Clear	NONE
11	1965-07-01 11:45	EST	Yes	LEL	USGS	12.1	11.26	-0.01	1.30	Poor	DebrisLight	NONE
10	1965-04-07 08:40	EST	Yes	CJC	USGS	7.34	11.18	0.00	0.60	Poor		NONE
9	1965-02-17 12:15	EST	Yes	CJC	USGS	64.8	12.17	-0.01	0.90	Fair		NONE
8	1965-01-27 09:00	EST	Yes	WA	USGS	9.13	11.15	0.00	1.20	Poor	DebrisLight	NONE
7	1965-01-05 16:00	EST	Yes	CJC	USGS	14.7	11.51	0.00	0.70	Poor		NONE
6	1964-09-12 15:15	EST	Yes	CJC	USGS	554	14.31	0.06	1.10	Fair		NONE
5	1964-08-31 14:25	EST	Yes	CJC	USGS	171	12.90	-0.04	1.20	Fair		NONE
4	1964-08-29 09:25	EST	Yes	CJC	USGS	818	14.65	0.00	2.00	Fair		NONE
3	1963-07-23 07:55	EST	Yes	CJC	USGS	142	12.74	-0.01	1.00	Fair		NONE
2	1963-02-04 15:00	EST	Yes	CJC	USGS	188	12.94	0.03	1.20	Fair		NONE
1	1962-08-02 06:45	EST	Yes	CJC	USGS	56.5	11.98	0.00	1.20	Fair		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

1987-03-30 -- --

Yes

MJS

USGS

197

13.02

0.08

1.00

Good

Clear

NONE

1980-03-14 12:40

EST

Yes

USGS

200

13.07

-0.02

0.60

Good

NONE

1979-09-13 14:25

EST

Yes

USGS

86.6

12.34

0.00

1.00

Fair

NONE

1975-04-11 14:45

EST

Yes

USGS

671

14.31

0.05

0.90

Fair

DebrisLight

NONE

1973-06-14 11:30

EST

Yes

USGS

120

12.55

0.00

1.00

Poor

NONE

1971-05-21 11:45

EST

Yes

DCC

USGS

0.16

10.64

0.00

0.50

Unspecified

NONE

1971-02-08 14:45

EST

Yes

DCC

USGS

268

13.14

0.09

0.80

Fair

DebrisLight

NONE

1970-01-07 15:20

EST

Yes

DCC

USGS

271

13.39

-0.02

1.00

Fair

DebrisLight

NONE

1967-08-14 12:05

EST

Yes

DCC

USGS

305

13.59

-0.04

1.20

Fair

DebrisLight

NONE

1967-06-26 11:35

EST

Yes

DCC

USGS

43.8

11.82

0.01

1.40

Fair

DebrisModerate

NONE

1967-03-27 12:05

EST

Yes

DCC

USGS

1.43

10.83

0.00

0.30

Poor

DebrisModerate

NONE

1967-02-14 10:35

EST

Yes

DCC

USGS

311

13.64

-0.04

1.00

Fair

DebrisLight

NONE

1967-01-04 15:10

EST

Yes

DLC

USGS

285

13.50

3.02

1.20

Good

NONE

1966-09-29 12:40

EST

Yes

DLC

USGS

91.2

12.24

0.03

1.30

Poor

NONE

1966-08-24 10:35

EST

Yes

PWP

USGS

7.26

11.08

-0.01

0.80

Poor

DebrisModerate

NONE

1966-07-20 08:55

EST

Yes

WLF

USGS

23.4

11.50

-0.01

1.10

Poor

DebrisHeavy

NONE

1966-06-15 11:15

EST

Yes

DCC

USGS

17.7

11.52

-0.01

0.70

Poor

DebrisLight

NONE

1966-04-07 11:15

EST

Yes

WLF

USGS

26.3

11.52

-0.01

1.40

Poor

Clear

NONE

1966-02-16 12:00

EST

Yes

LEL

USGS

16.7

11.42

-0.01

1.40

Poor

NONE

1966-01-05 12:30

EST

Yes

LEL

USGS

9.74

11.19

0.00

1.00

Fair

DebrisModerate

NONE

1965-11-24 11:10

EST

Yes

PEM

USGS

10.0

11.20

0.00

1.20

Fair

NONE

1965-10-01 11:50

EST

Yes

LEL

USGS

178

12.95

-0.02

1.50

Good

NONE

1965-08-19 10:00

EST

Yes

LEL

USGS

34.4

11.66

-0.01

0.90

Fair

Clear

NONE

1965-07-01 11:45

EST

Yes

LEL

USGS

12.1

11.26

-0.01

1.30

Poor

DebrisLight

NONE

1965-04-07 08:40

EST

Yes

CJC

USGS

7.34

11.18

0.00

0.60

Poor

NONE

1965-02-17 12:15

EST

Yes

CJC

USGS

64.8

12.17

-0.01

0.90

Fair

NONE

1965-01-27 09:00

EST

Yes

USGS

9.13

11.15

0.00

1.20

Poor

DebrisLight

NONE

1965-01-05 16:00

EST

Yes

CJC

USGS

14.7

11.51

0.00

0.70

Poor

NONE

1964-09-12 15:15

EST

Yes

CJC

USGS

554

14.31

0.06

1.10

Fair

NONE

1964-08-31 14:25

EST

Yes

CJC

USGS

171

12.90

-0.04

1.20

Fair

NONE

1964-08-29 09:25

EST

Yes

CJC

USGS

818

14.65

0.00

2.00

Fair

NONE

1963-07-23 07:55

EST

Yes

CJC

USGS

142

12.74

-0.01

1.00

Fair

NONE

1963-02-04 15:00

EST

Yes

CJC

USGS

188

12.94

0.03

1.20

Fair

NONE

1962-08-02 06:45

EST

Yes

CJC

USGS

56.5

11.98

0.00

1.20

Fair

NONE