USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 01491800 KNOTT MILLPOND NEAR HILLSBORO, MD

Caroline County, Maryland

Hydrologic Unit Code 02060005

Latitude 38°52'55", Longitude 75°55'33" NAD27

Drainage area 8.45 square miles

Gage datum 48.7 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
17	1952-10-07 13:30	EST	Yes	JB	USGS	6.61	0.86	0.00	0.50	Fair	DebrisLight	NONE
16	1952-09-09 12:50	EDT	Yes	R	USGS	8.22	1.00	0.00	0.50	Good	Clear	NONE
15	1952-08-12 10:40	EDT	Yes	R	USGS	13.0	1.14	0.00	0.30	Good	DebrisLight	NONE
14	1952-07-08 14:40	EDT	Yes	JB	USGS	8.17	1.04	0.00	0.50	Good	DebrisModerate	NONE
13	1952-06-19 12:05	EDT	Yes	R	USGS	6.41	0.98	0.00	0.30	Fair	Clear	NONE
12	1952-05-20 13:20	EDT	Yes	JB	USGS	19.8	1.22	0.00	0.50	Good	Clear	NONE
11	1952-04-15 11:05	EST	Yes	JB	USGS	24.1	1.28	0.00	0.50	Good	Clear	NONE
10	1952-04-02 09:40	EST	Yes	R	USGS	18.6	1.12	0.00	0.30	Good	Clear	NONE
9	1952-03-20 13:10	EST	Yes	R	USGS	20.0	1.20	0.00	0.50	Good		NONE
8	1952-02-14 10:45	EST	Yes	R	USGS	17.4	1.16	0.00	0.30	Good	Clear	NONE
7	1952-01-23 10:15	EST	Yes	R	USGS	32.2	1.52	0.02	0.40	Good	Clear	NONE
6	1952-01-07 11:00	EST	Yes	R	USGS	18.6	1.20			Good	Clear	NONE
5	1951-12-17 11:05	EST	Yes	JB	USGS	8.48	0.84	0.00	0.30	Good	Clear	NONE
4	1951-12-04 16:05	EST	Yes	JB	USGS	8.48	0.84	0.00	0.30	Good	Clear	NONE
3	1951-11-15 10:40	EST	Yes	R	USGS	8.83	0.88	0.01	0.60	Good	Clear	NONE
2	1951-10-30 09:45	EST	Yes	R	USGS	3.35	0.78	0.00	0.30	Good	Clear	NONE
1	1951-10-10 11:20	EST	Yes	R	USGS	3.20	0.70	0.00	0.30	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

1952-10-07 13:30

EST

Yes

USGS

6.61

0.86

0.00

0.50

Fair

DebrisLight

NONE

1952-09-09 12:50

EDT

Yes

USGS

8.22

1.00

0.00

0.50

Good

Clear

NONE

1952-08-12 10:40

EDT

Yes

USGS

13.0

1.14

0.00

0.30

Good

DebrisLight

NONE

1952-07-08 14:40

EDT

Yes

USGS

8.17

1.04

0.00

0.50

Good

DebrisModerate

NONE

1952-06-19 12:05

EDT

Yes

USGS

6.41

0.98

0.00

0.30

Fair

Clear

NONE

1952-05-20 13:20

EDT

Yes

USGS

19.8

1.22

0.00

0.50

Good

Clear

NONE

1952-04-15 11:05

EST

Yes

USGS

24.1

1.28

0.00

0.50

Good

Clear

NONE

1952-04-02 09:40

EST

Yes

USGS

18.6

1.12

0.00

0.30

Good

Clear

NONE

1952-03-20 13:10

EST

Yes

USGS

20.0

1.20

0.00

0.50

Good

NONE

1952-02-14 10:45

EST

Yes

USGS

17.4

1.16

0.00

0.30

Good

Clear

NONE

1952-01-23 10:15

EST

Yes

USGS

32.2

1.52

0.02

0.40

Good

Clear

NONE

1952-01-07 11:00

EST

Yes

USGS

18.6

1.20

Good

Clear

NONE

1951-12-17 11:05

EST

Yes

USGS

8.48

0.84

0.00

0.30

Good

Clear

NONE

1951-12-04 16:05

EST

Yes

USGS

8.48

0.84

0.00

0.30

Good

Clear

NONE

1951-11-15 10:40

EST

Yes

USGS

8.83

0.88

0.01

0.60

Good

Clear

NONE

1951-10-30 09:45

EST

Yes

USGS

3.35

0.78

0.00

0.30

Good

Clear

NONE

1951-10-10 11:20

EST

Yes

USGS

3.20

0.70

0.00

0.30

Good

Clear

NONE