USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 01589040 ROCKBURN BRANCH AT ELKRIDGE, MD

Howard County, Maryland

Hydrologic Unit Code 02060003

Latitude 39°13'29", Longitude 76°43'12" NAD27

Drainage area 3.69 square miles

Gage datum 15 feet above NGVD29

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Meas. Number	Date Time	Time Datum	Measurement Used?	Who	Measuring Agency	Stream flow (ft³/s)	GH Change (ft)	Meas. Duration (hr)	Meas. Rated	Control	Flow Adjust. Code
17	2002-09-19 10:23	EDT	Yes	JJM	USGS	0.06	0.00	0.10	Poor		NONE
16	1990-06-27 18:45	EDT	Yes	JRD	USGS	1.68			Good	Clear	NONE
15	1990-04-27 15:00	EDT	Yes	JRD	USGS	3.64			Good	Clear	NONE
14	1990-03-28 14:10	EST	Yes	JRD	USGS	3.67			Good	Clear	NONE
13	1990-03-08 12:40	EST	Yes	RMC	USGS	3.32			Unspecified	Clear	NONE
12	1989-09-18 12:40	EDT	Yes	JRD	USGS	1.44			Good	Clear	NONE
11	1989-04-25 09:50	EDT	Yes	RJS/JA	USGS	3.42			Good	Clear	NONE
10	1988-12-19 10:15	EST	Yes	RJS/JA	USGS	1.05			Good	Clear	NONE
9	1988-12-04 09:45	EST	Yes	JRD	USGS	1.30			Good	Clear	NONE
8	1988-10-14 13:10	EDT	Yes	JRD	USGS	0.43			Good	Clear	NONE
7	1988-09-12 10:40	EDT	Yes	JRD	USGS	0.48			Good	Clear	NONE
6	1988-08-17 12:00	EDT	Yes	JRD	USGS	0.33			Good	Clear	NONE
5	1988-06-30 09:55	EDT	Yes	JRD	USGS	0.92			Good	Clear	NONE
4	1988-03-18 09:45	EST	Yes	JRD	USGS	3.26			Good	Clear	NONE
3	1988-03-01 10:50	EST	Yes	JRD	USGS	3.69			Good	Clear	NONE
2	1987-11-09 10:30	EST	Yes	JJM	USGS	0.99			Good	Clear	NONE
1	1987-10-19 10:45	EDT	Yes	JRD	USGS	0.63			Good	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

2002-09-19 10:23

EDT

Yes

JJM

USGS

0.06

0.00

0.10

Poor

NONE

1990-06-27 18:45

EDT

Yes

JRD

USGS

1.68

Good

Clear

NONE

1990-04-27 15:00

EDT

Yes

JRD

USGS

3.64

Good

Clear

NONE

1990-03-28 14:10

EST

Yes

JRD

USGS

3.67

Good

Clear

NONE

1990-03-08 12:40

EST

Yes

RMC

USGS

3.32

Unspecified

Clear

NONE

1989-09-18 12:40

EDT

Yes

JRD

USGS

1.44

Good

Clear

NONE

1989-04-25 09:50

EDT

Yes

RJS/JA

USGS

3.42

Good

Clear

NONE

1988-12-19 10:15

EST

Yes

RJS/JA

USGS

1.05

Good

Clear

NONE

1988-12-04 09:45

EST

Yes

JRD

USGS

1.30

Good

Clear

NONE

1988-10-14 13:10

EDT

Yes

JRD

USGS

0.43

Good

Clear

NONE

1988-09-12 10:40

EDT

Yes

JRD

USGS

0.48

Good

Clear

NONE

1988-08-17 12:00

EDT

Yes

JRD

USGS

0.33

Good

Clear

NONE

1988-06-30 09:55

EDT

Yes

JRD

USGS

0.92

Good

Clear

NONE

1988-03-18 09:45

EST

Yes

JRD

USGS

3.26

Good

Clear

NONE

1988-03-01 10:50

EST

Yes

JRD

USGS

3.69

Good

Clear

NONE

1987-11-09 10:30

EST

Yes

JJM

USGS

0.99

Good

Clear

NONE

1987-10-19 10:45

EDT

Yes

JRD

USGS

0.63

Good

Clear

NONE