USGS Surface Water for USA: Streamflow Measurements

USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources

Data Category:
Geographic Area:

Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins

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

Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 50048565 QUEBRADA SANTA CATALINA NEAR GUAYNABO, PR

Guaynabo Municipio, Puerto Rico

Hydrologic Unit Code 21010005

Latitude 18°24'32.50", Longitude 66°07'06.50" NAD27

Drainage area 0.33 square miles

Gage datum 50.98 feet above NGVD29

**Output formats**
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
Reselect output format

Output formats

HTML table with channel data

HTML table without channel data

Tab-separated data with channel data

Tab-separated data without channel data

Graph of data

Reselect output format

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
28	2025-08-21 11:27:25	AST	Yes	JSB/MRQ	USGS	0.52				Poor		NONE
27	2025-03-04 13:23:46	AST	Yes	FAA/JSB	USGS	0.48	1.11	-0.03	0.60	Fair	DebrisHeavy	NONE
26	2024-09-09 11:01:14	AST	Yes	BLV/JSB/FAA	USGS	0.87	1.10			Poor	VegetationLight	NONE
25	2024-03-12 11:10:44	AST	Yes	BLV/JSB	USGS	0.53	1.09			Poor	DebrisLight	NONE
24	2023-08-30 10:23:25	AST	Yes	JSB/YMM	USGS	0.36	1.07	0.00	0.33	Poor		NONE
23	2023-03-02 15:37	AST	Yes	BLV/JSB	USGS	0.58	1.08			Poor	DebrisHeavy	NONE
22	2022-10-12 14:01:17	AST	Yes	CDN/JSB/BLV	USGS	1.18	1.10	0.00	1.00	Poor	Clear	NONE
21	2022-02-28 11:35:37	AST	Yes	BLV/YMM	USGS	0.44				Poor	Clear	NONE
20	2021-08-25 11:10:42	AST	Yes	YMM/DSC	USGS	0.31				Poor	DebrisModerate	NONE
19	2021-03-03 10:45:30	AST	Yes	AAM/YMM	USGS	0.54	1.11	0.00	0.56	Poor		NONE
18	2020-09-01 10:37:30	AST	Yes	MRT/YM	USGS	0.54	1.10		0.31	Poor		NONE
017	2020-03-03 11:39	AST	Yes	HJE/YM	USGS	0.78	1.12	0.00	0.80	Good	Clear	NONE
16	2019-08-21 12:55	AST	Yes	JSB/DSC	USGS	0.45	1.09	0.00	0.70	Good	Clear	NONE
15	2019-03-11 13:21:30	AST	Yes	JSB/LVA	USGS	0.02	1.10			Fair	Clear	NONE
14	2018-08-28 11:51	AST	Yes	LVA/JSB	USGS	1.38	1.14	0.00	0.50	Fair	Clear	NONE
13	2018-06-26 09:57:30	AST	Yes	JSB/LVA	USGS	0.78		0.00	0.50	Fair	Clear	NONE
12	2018-02-27 11:06	AST	Yes	MRT/JSB	USGS	3.08	1.24		0.25	Fair	Clear	NONE
11	2017-10-24 08:58	AST	Yes	MRT/JSB	USGS	2.79	1.10		0.50	Fair	Clear	NONE
10	2017-08-30 12:10:30	AST	Yes	MRT/JSB	USGS	0.38	1.11	0.00	0.35	Poor	Clear	NONE
9	2017-06-06 09:19	AST	Yes	JSB/MRT	USGS	1.01	1.10	0.00	0.68	Poor	Clear	NONE
8	2016-08-31 11:27:30	AST	Yes	YM/JS/MR	USGS	0.65	1.10	0.00		Poor	Clear	NONE
7	2016-07-14 11:24	AST	Yes	MRT/JS	USGS	0.91	1.12		0.60	Fair	Clear	NONE
6	2016-06-14 09:21	AST	Yes	MRT/J	USGS	0.61	1.11	0.00	0.80	Good	DebrisModerate	NONE
5	2016-05-05 16:31:30	AST	Yes	FAA/MCR	USGS	0.50	1.10	0.00	0.50	Fair	DebrisModerate	NONE
4	2016-02-29 15:14	AST	Yes	MRT/	USGS	0.41			0.30	Fair	DebrisModerate	NONE
3	2015-09-03 11:33	AST	Yes	YM, IR	USGS	0.66				Poor		NONE
2	2015-05-21 08:53	AST	Yes	YM/EH/JS	USGS	0.93	1.10	0.00	0.30	Good	Clear	NONE
1	2015-04-23 10:52:30	AST	Yes	YM/SG	USGS	0.20			0.10	Poor	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

2025-08-21 11:27:25

AST

Yes

JSB/MRQ

USGS

0.52

Poor

NONE

2025-03-04 13:23:46

AST

Yes

FAA/JSB

USGS

0.48

1.11

-0.03

0.60

Fair

DebrisHeavy

NONE

2024-09-09 11:01:14

AST

Yes

BLV/JSB/FAA

USGS

0.87

1.10

Poor

VegetationLight

NONE

2024-03-12 11:10:44

AST

Yes

BLV/JSB

USGS

0.53

1.09

Poor

DebrisLight

NONE

2023-08-30 10:23:25

AST

Yes

JSB/YMM

USGS

0.36

1.07

0.00

0.33

Poor

NONE

2023-03-02 15:37

AST

Yes

BLV/JSB

USGS

0.58

1.08

Poor

DebrisHeavy

NONE

2022-10-12 14:01:17

AST

Yes

CDN/JSB/BLV

USGS

1.18

1.10

0.00

1.00

Poor

Clear

NONE

2022-02-28 11:35:37

AST

Yes

BLV/YMM

USGS

0.44

Poor

Clear

NONE

2021-08-25 11:10:42

AST

Yes

YMM/DSC

USGS

0.31

Poor

DebrisModerate

NONE

2021-03-03 10:45:30

AST

Yes

AAM/YMM

USGS

0.54

1.11

0.00

0.56

Poor

NONE

2020-09-01 10:37:30

AST

Yes

MRT/YM

USGS

0.54

1.10

0.31

Poor

NONE

017

2020-03-03 11:39

AST

Yes

HJE/YM

USGS

0.78

1.12

0.00

0.80

Good

Clear

NONE

2019-08-21 12:55

AST

Yes

JSB/DSC

USGS

0.45

1.09

0.00

0.70

Good

Clear

NONE

2019-03-11 13:21:30

AST

Yes

JSB/LVA

USGS

0.02

1.10

Fair

Clear

NONE

2018-08-28 11:51

AST

Yes

LVA/JSB

USGS

1.38

1.14

0.00

0.50

Fair

Clear

NONE

2018-06-26 09:57:30

AST

Yes

JSB/LVA

USGS

0.78

0.00

0.50

Fair

Clear

NONE

2018-02-27 11:06

AST

Yes

MRT/JSB

USGS

3.08

1.24

0.25

Fair

Clear

NONE

2017-10-24 08:58

AST

Yes

MRT/JSB

USGS

2.79

1.10

0.50

Fair

Clear

NONE

2017-08-30 12:10:30

AST

Yes

MRT/JSB

USGS

0.38

1.11

0.00

0.35

Poor

Clear

NONE

2017-06-06 09:19

AST

Yes

JSB/MRT

USGS

1.01

1.10

0.00

0.68

Poor

Clear

NONE

2016-08-31 11:27:30

AST

Yes

YM/JS/MR

USGS

0.65

1.10

0.00

Poor

Clear

NONE

2016-07-14 11:24

AST

Yes

MRT/JS

USGS

0.91

1.12

0.60

Fair

Clear

NONE

2016-06-14 09:21

AST

Yes

MRT/J

USGS

0.61

1.11

0.00

0.80

Good

DebrisModerate

NONE

2016-05-05 16:31:30

AST

Yes

FAA/MCR

USGS

0.50

1.10

0.00

0.50

Fair

DebrisModerate

NONE

2016-02-29 15:14

AST

Yes

MRT/

USGS

0.41

0.30

Fair

DebrisModerate

NONE

2015-09-03 11:33

AST

Yes

YM, IR

USGS

0.66

Poor

NONE

2015-05-21 08:53

AST

Yes

YM/EH/JS

USGS

0.93

1.10

0.00

0.30

Good

Clear

NONE

2015-04-23 10:52:30

AST

Yes

YM/SG

USGS

0.20

0.10

Poor

Clear

NONE