USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 01645750 S F LITTLE DIFFICULT RUN NEAR FAIRFAX, VA

Fairfax County, Virginia

Hydrologic Unit Code 02070008

Latitude 38°53'52", Longitude 77°21'12" NAD27

Drainage area 1.58 square miles

Gage datum 317.09 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)	Meas. Rated	Control	Flow Adjust. Code
33	1977-08-29 -- --	--	Yes	JDL	USGS	0.14		Good		NONE
32	1974-09-18 08:48	EDT	Yes	PMS	USGS	0.29		Fair		NONE
31	1973-09-23 11:23	EDT	Yes	TLC	USGS	0.59		Good		NONE
30	1973-09-06 08:20	EDT	Yes	PLS	USGS	0.46		Good		NONE
29	1972-09-07 11:25	EDT	Yes	RAW	USGS	0.56		Fair		NONE
28	1971-09-29 12:45	EDT	Yes	RAW	USGS	0.51	3.30	Good	Clear	NONE
27	1970-09-23 12:25	EDT	Yes	TLC	USGS	0.08	3.26	Unspecified		NONE
26	1970-08-27 12:55	EDT	Yes	RAW	USGS	0.36	3.37	Good		NONE
25	1970-04-14 15:10	EST	Yes	PLS	USGS	37.3	5.04	Fair		NONE
24	1969-12-31 13:55	EST	Yes	TLC	USGS	5.22	3.59	Unspecified		NONE
23	1969-10-01 15:40	EDT	Yes	TLC	USGS	0.28	3.34	Unspecified		NONE
22	1969-09-19 15:15	EDT	Yes	RAW	USGS	0.30		Good	Clear	NONE
21	1969-03-06 15:55	EST	Yes	FGG	USGS	1.40	3.46	Fair	Clear	NONE
20	1968-09-04 08:45	EDT	Yes	PLS	USGS	0.08	3.26	Fair	Clear	NONE
19	1968-08-23 12:50	EDT	Yes	PLS	USGS	0.25	3.25	Fair	Clear	NONE
18	1967-12-11 15:20	EST	Yes	JLW	USGS	3.51	3.55	Good		NONE
17	1967-12-03 16:50	EST	Yes	FPK/FGG	USGS	5.22	3.56	Good	Clear	NONE
16	1967-11-16 12:25	EST	Yes	N/FGG	USGS	0.47	3.38	Good	Clear	NONE
15	1967-09-11 -- --	--	Yes	FGG	USGS	0.33	3.14	Good		NONE
13	1967-08-24 09:10	EDT	Yes	FPK/RAW	USGS	10.5	4.12	Good	Unspecifed	NONE
14I	1967-08-24 -- --	--	Yes	JWL/CJR	USGS	200	8.31	Unspecified	Unspecifed	NONE
12	1967-08-17 09:10	EDT	Yes	FPK	USGS	0.16	3.32	Fair	Clear	NONE
11	1967-03-15 15:45	EST	Yes	FPK/TLC	USGS	3.30	3.56	Fair	Clear	NONE
10	1967-03-10 14:15	EST	Yes	JWL/FGG	USGS	1.48	3.50	Poor	Clear	NONE
9	1967-03-07 14:34	EST	Yes	JWL	USGS	10.4	3.81	Fair	Clear	NONE
8	1966-11-28 14:47	EST	Yes	FPK	USGS	1.88	3.52	Good	DebrisLight	NONE
7	1966-11-09 09:40	EST	Yes	FPK/JWL	USGS	0.48	3.40	Fair	DebrisLight	NONE
6	1966-10-19 09:50	EDT	Yes	FPK	USGS	21.1	4.81	Good	Clear	NONE
5	1966-09-14 10:55	EDT	Yes	JWL/P	USGS	11.1	4.70	Unspecified	VegetationLight	NONE
4	1966-09-14 10:05	EDT	Yes	JWL/P	USGS	3.38	3.75	Unspecified	VegetationLight	NONE
3S	1966-09-14 -- --	--	Yes	SGA/FGG	USGS	80.0	6.37	Unspecified	VegetationLight	NONE
2	1966-09-01 13:30	EDT	Yes	FPK	USGS	0.01		Poor		NONE
1	1966-08-25 -- --	--	Yes	FGG	USGS	0.02	0.37	Poor		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

1977-08-29 -- --

Yes

JDL

USGS

0.14

Good

NONE

1974-09-18 08:48

EDT

Yes

PMS

USGS

0.29

Fair

NONE

1973-09-23 11:23

EDT

Yes

TLC

USGS

0.59

Good

NONE

1973-09-06 08:20

EDT

Yes

PLS

USGS

0.46

Good

NONE

1972-09-07 11:25

EDT

Yes

RAW

USGS

0.56

Fair

NONE

1971-09-29 12:45

EDT

Yes

RAW

USGS

0.51

3.30

Good

Clear

NONE

1970-09-23 12:25

EDT

Yes

TLC

USGS

0.08

3.26

Unspecified

NONE

1970-08-27 12:55

EDT

Yes

RAW

USGS

0.36

3.37

Good

NONE

1970-04-14 15:10

EST

Yes

PLS

USGS

37.3

5.04

Fair

NONE

1969-12-31 13:55

EST

Yes

TLC

USGS

5.22

3.59

Unspecified

NONE

1969-10-01 15:40

EDT

Yes

TLC

USGS

0.28

3.34

Unspecified

NONE

1969-09-19 15:15

EDT

Yes

RAW

USGS

0.30

Good

Clear

NONE

1969-03-06 15:55

EST

Yes

FGG

USGS

1.40

3.46

Fair

Clear

NONE

1968-09-04 08:45

EDT

Yes

PLS

USGS

0.08

3.26

Fair

Clear

NONE

1968-08-23 12:50

EDT

Yes

PLS

USGS

0.25

3.25

Fair

Clear

NONE

1967-12-11 15:20

EST

Yes

JLW

USGS

3.51

3.55

Good

NONE

1967-12-03 16:50

EST

Yes

FPK/FGG

USGS

5.22

3.56

Good

Clear

NONE

1967-11-16 12:25

EST

Yes

N/FGG

USGS

0.47

3.38

Good

Clear

NONE

1967-09-11 -- --

Yes

FGG

USGS

0.33

3.14

Good

NONE

1967-08-24 09:10

EDT

Yes

FPK/RAW

USGS

10.5

4.12

Good

Unspecifed

NONE

14I

1967-08-24 -- --

Yes

JWL/CJR

USGS

200

8.31

Unspecified

Unspecifed

NONE

1967-08-17 09:10

EDT

Yes

FPK

USGS

0.16

3.32

Fair

Clear

NONE

1967-03-15 15:45

EST

Yes

FPK/TLC

USGS

3.30

3.56

Fair

Clear

NONE

1967-03-10 14:15

EST

Yes

JWL/FGG

USGS

1.48

3.50

Poor

Clear

NONE

1967-03-07 14:34

EST

Yes

JWL

USGS

10.4

3.81

Fair

Clear

NONE

1966-11-28 14:47

EST

Yes

FPK

USGS

1.88

3.52

Good

DebrisLight

NONE

1966-11-09 09:40

EST

Yes

FPK/JWL

USGS

0.48

3.40

Fair

DebrisLight

NONE

1966-10-19 09:50

EDT

Yes

FPK

USGS

21.1

4.81

Good

Clear

NONE

1966-09-14 10:55

EDT

Yes

JWL/P

USGS

11.1

4.70

Unspecified

VegetationLight

NONE

1966-09-14 10:05

EDT

Yes

JWL/P

USGS

3.38

3.75

Unspecified

VegetationLight

NONE

1966-09-14 -- --

Yes

SGA/FGG

USGS

80.0

6.37

Unspecified

VegetationLight

NONE

1966-09-01 13:30

EDT

Yes

FPK

USGS

0.01

Poor

NONE

1966-08-25 -- --

Yes

FGG

USGS

0.02

0.37

Poor

NONE