USGS Surface Water for USA: Streamflow Measurements

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Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Streamflow Measurements for the Nation

USGS 011020308 SAWMILL BROOK NEAR ROCKPORT, MA

Essex County, Massachusetts

Hydrologic Unit Code 01090001

Latitude 42°38'18", Longitude 70°36'37" NAD27

Drainage area 0.53 square miles

Contributing drainage area 0.53 square miles

Gage datum 40 feet above NGVD29

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Output formats

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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
20	2000-11-08 13:00	EST	Yes	jsw	USGS	0.43	2.08	0.00	0.50	Fair		unkn
19	2000-09-07 14:30	EDT	Yes	jsw	USGS	0.05	1.24	-0.01	0.30	Poor	Clear	unkn
18	2000-07-18 09:30	EDT	Yes	rss	USGS	0.27	1.55	0.04	0.40	Fair	DebrisModerate	unkn
17	2000-06-12 15:00	EDT	Yes	jsw	USGS	0.65	1.80	0.00	0.50	Good	Clear	unkn
16	2000-05-05 12:15	EDT	Yes	jsw	USGS	0.76	1.81	0.00	0.50	Good	Clear	unkn
15	2000-03-23 13:30	EST	Yes	jsw	USGS	0.89	1.78	0.00	0.50	Good	Clear	unkn
14	2000-02-15 14:45	EST	Yes	jsw	USGS	1.99	2.08	0.00	0.50	Good		unkn
13	2000-02-14 13:38	EST	Yes	GGG	USGS	16.1	2.59	0.02	0.50	Good	Clear	unkn
12	1999-12-28 12:15	EST	Yes	jsw	USGS	0.15	1.43	0.00	0.20	Poor	IceShore	unkn
11	1999-10-28 10:46	EDT	Yes	JSW	USGS	0.54	1.58	0.00	0.50	Poor	Clear	unkn
10	1999-07-23 12:05	EDT	Yes	JLZ	USGS	0.00	1.10			Unspecified		unkn
9	1999-06-28 09:45	EDT	Yes	jfw	USGS	0.00	1.12	0.00	0.10	Fair	Clear	unkn
8	1999-05-11 12:30	EDT	Yes	JLZ	USGS	0.49	1.60	0.00	0.50	Fair	Clear	unkn
7	1999-03-04 10:15	EST	Yes	jfw	USGS	4.52	2.12	0.00	1.00	Good	Clear	unkn
6	1999-03-03 09:12	EST	Yes	JLZ	USGS	13.9	2.53	0.00	0.50	Good	Clear	unkn
5	1999-02-03 09:12	EST	Yes	JLZ	USGS	18.3	2.62	-0.04	0.50	Good	Clear	unkn
4	1999-01-24 15:15	EST	Yes	CRL	USGS	4.83	2.24	0.02	0.50	Good	Clear	unkn
3	1999-01-16 11:05	EST	Yes	CRL	USGS	6.75	2.26	-0.01	0.50	Fair	Clear	unkn
2	1999-01-04 10:30	EST	Yes	ggg	USGS	2.50	2.07	0.00	0.80	Excellent	Clear	unkn
1	1998-12-10 12:18	EST	Yes	JLZ	USGS	0.25	1.46	0.00	0.50	Poor	Clear	unkn

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

2000-11-08 13:00

EST

Yes

jsw

USGS

0.43

2.08

0.00

0.50

Fair

unkn

2000-09-07 14:30

EDT

Yes

jsw

USGS

0.05

1.24

-0.01

0.30

Poor

Clear

unkn

2000-07-18 09:30

EDT

Yes

rss

USGS

0.27

1.55

0.04

0.40

Fair

DebrisModerate

unkn

2000-06-12 15:00

EDT

Yes

jsw

USGS

0.65

1.80

0.00

0.50

Good

Clear

unkn

2000-05-05 12:15

EDT

Yes

jsw

USGS

0.76

1.81

0.00

0.50

Good

Clear

unkn

2000-03-23 13:30

EST

Yes

jsw

USGS

0.89

1.78

0.00

0.50

Good

Clear

unkn

2000-02-15 14:45

EST

Yes

jsw

USGS

1.99

2.08

0.00

0.50

Good

unkn

2000-02-14 13:38

EST

Yes

GGG

USGS

16.1

2.59

0.02

0.50

Good

Clear

unkn

1999-12-28 12:15

EST

Yes

jsw

USGS

0.15

1.43

0.00

0.20

Poor

IceShore

unkn

1999-10-28 10:46

EDT

Yes

JSW

USGS

0.54

1.58

0.00

0.50

Poor

Clear

unkn

1999-07-23 12:05

EDT

Yes

JLZ

USGS

0.00

1.10

Unspecified

unkn

1999-06-28 09:45

EDT

Yes

jfw

USGS

0.00

1.12

0.00

0.10

Fair

Clear

unkn

1999-05-11 12:30

EDT

Yes

JLZ

USGS

0.49

1.60

0.00

0.50

Fair

Clear

unkn

1999-03-04 10:15

EST

Yes

jfw

USGS

4.52

2.12

0.00

1.00

Good

Clear

unkn

1999-03-03 09:12

EST

Yes

JLZ

USGS

13.9

2.53

0.00

0.50

Good

Clear

unkn

1999-02-03 09:12

EST

Yes

JLZ

USGS

18.3

2.62

-0.04

0.50

Good

Clear

unkn

1999-01-24 15:15

EST

Yes

CRL

USGS

4.83

2.24

0.02

0.50

Good

Clear

unkn

1999-01-16 11:05

EST

Yes

CRL

USGS

6.75

2.26

-0.01

0.50

Fair

Clear

unkn

1999-01-04 10:30

EST

Yes

ggg

USGS

2.50

2.07

0.00

0.80

Excellent

Clear

unkn

1998-12-10 12:18

EST

Yes

JLZ

USGS

0.25

1.46

0.00

0.50

Poor

Clear

unkn

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://staging.waterdata.usgs.gov/nwis/measurements?

Page Contact Information: Massachusetts Water Data Support Team
Page Last Modified: 2024-11-28 18:50:56 EST
0.26 0.25 staging