USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

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USGS 08180942 Laurel Canyon Ck nr Helotes, TX

Bexar County, Texas

Hydrologic Unit Code 12100302

Latitude 29°33'41.00", Longitude 98°45'16.80" NAD83

Drainage area 0.60 square miles

Contributing drainage area 0.60 square miles

Gage datum 1,045 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
38	2011-01-14 09:50	CST	Yes	RNS	USGS	0.00	2.59			Unspecified		NONE
36	2010-11-17 10:00	CST	Yes	RNS/VAM	USGS	0.00	2.61			Unspecified	Clear	NONE
35	2010-10-01 12:00	CDT	Yes	RNS	USGS	0.00	2.60			Unspecified		NONE
34	2010-02-10 14:20	CST	Yes	RNS	USGS	0.00	2.81		0.20	Unspecified	Unspecifed	NONE
33	2009-10-21 11:40	CDT	Yes	RNS	USGS	0.00	2.61	0.00	0.30	Unspecified	Clear	NONE
32	2009-10-01 08:00	CDT	Yes	RNS	USGS	0.00	2.61			Unspecified		NONE
31	2008-12-03 13:22:30	CST	Yes	RNS	USGS	0.00	2.62	0.00	0.60	Unspecified	Clear	NONE
30	2008-05-29 13:35	CDT	Yes	RNS	USGS	0.00	2.62			Unspecified		NONE
29	2008-04-22 11:15	CDT	Yes	RNS	USGS	0.00	2.70			Unspecified		NONE
28	2008-02-06 14:20	CST	Yes	RNS	USGS	0.00	2.62			Unspecified		NONE
27	2007-12-21 10:25	CST	Yes	RNS	USGS	0.00	2.62			Unspecified	Clear	NONE
26	2007-10-15 13:05	CDT	Yes	RNS	USGS	0.00	2.62			Unspecified		NONE
25	2007-08-13 14:50	CDT	Yes	RNS	USGS	0.00	2.62			Unspecified	Clear	NONE
24	2007-06-28 15:08	CDT	Yes	RNS	USGS	16.5	4.22	-0.13	0.50	Fair	Unspecifed	NONE
23	2007-06-28 14:35	CDT	Yes	RNS	USGS	23.2	4.35	-0.12	0.50	Fair	Unspecifed	NONE
22	2007-06-28 14:05	CDT	Yes	RNS	USGS	30.6	4.46	-0.10	0.40	Fair	Unspecifed	NONE
21	2007-06-28 13:35	CDT	Yes	RNS	USGS	37.6	4.58	-0.17	0.60	Fair	Unspecifed	NONE
20	2007-06-28 13:05	CDT	Yes	RNS	USGS	48.9	4.75	-0.20	0.40	Fair	Unspecifed	NONE
19	2007-06-28 11:05	CDT	Yes	RNS	USGS	133	5.45	0.69	0.50	Fair	Unspecifed	NONE
18	2007-04-23 11:45	CDT	Yes	RNS	USGS	0.00	2.62			Unspecified	Clear	NONE
17	2007-02-20 11:00	CST	Yes	RNS	USGS	0.00	2.62			Unspecified	Clear	NONE
16	2007-01-30 10:30	CST	Yes	RNS	USGS	0.00	2.77			Unspecified	Clear	NONE
15	2006-12-15 10:05	CST	Yes	RNS	USGS	0.00	2.62			Unspecified	Clear	NONE
14	2006-11-17 11:00	CST	Yes	RNS/DET	USGS	0.00	2.62			Unspecified	Clear	NONE
13	2004-06-30 10:18	CDT	Yes	KCM	USGS	0.10	3.69	-0.07	1.00	Fair	Clear	NONE
12	2004-06-30 10:01	CDT	Yes	KCM	USGS	0.09	3.70	-0.07	1.00	Fair	Clear	NONE
11	2004-06-30 09:52	CDT	Yes	KCM	USGS	0.12	3.71	-0.07	1.00	Fair	Clear	NONE
10	2004-06-29 19:56	CDT	Yes	KCM	USGS	3.17	3.91	-0.04	1.00	Fair	Clear	NONE
9	2004-06-29 19:47	CDT	Yes	KCM	USGS	3.53	3.94	-0.04	1.00	Fair	Clear	NONE
8	2004-06-29 19:32	CDT	Yes	KCM	USGS	4.04	3.95	-0.07	1.00	Fair	Clear	NONE
7	2004-06-29 19:14	CDT	Yes	KCM	USGS	4.74	3.95	-0.07	1.00	Fair	Clear	NONE
6	2004-06-29 19:01	CDT	Yes	KCM	USGS	5.52	3.98	-0.07	1.00	Fair	Clear	NONE
5	2004-06-29 18:39	CDT	Yes	KCM	USGS	7.02	4.01	-0.12	1.00	Fair	Clear	NONE
4	2004-06-29 18:28	CDT	Yes	KCM	USGS	7.38	4.03	-0.12	1.00	Fair	Clear	NONE
3	2004-06-29 18:14	CDT	Yes	KCM	USGS	8.05	4.04	-0.12	1.00	Fair	Clear	NONE
2	2004-06-29 18:01	CDT	Yes	KCM	USGS	9.41	4.09	-0.12	1.00	Fair	Clear	NONE
1	2004-06-29 17:40	CDT	Yes	KCM	USGS	10.8	4.13	-0.12	1.00	Fair	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

2011-01-14 09:50

CST

Yes

RNS

USGS

0.00

2.59

Unspecified

NONE

2010-11-17 10:00

CST

Yes

RNS/VAM

USGS

0.00

2.61

Unspecified

Clear

NONE

2010-10-01 12:00

CDT

Yes

RNS

USGS

0.00

2.60

Unspecified

NONE

2010-02-10 14:20

CST

Yes

RNS

USGS

0.00

2.81

0.20

Unspecified

Unspecifed

NONE

2009-10-21 11:40

CDT

Yes

RNS

USGS

0.00

2.61

0.00

0.30

Unspecified

Clear

NONE

2009-10-01 08:00

CDT

Yes

RNS

USGS

0.00

2.61

Unspecified

NONE

2008-12-03 13:22:30

CST

Yes

RNS

USGS

0.00

2.62

0.00

0.60

Unspecified

Clear

NONE

2008-05-29 13:35

CDT

Yes

RNS

USGS

0.00

2.62

Unspecified

NONE

2008-04-22 11:15

CDT

Yes

RNS

USGS

0.00

2.70

Unspecified

NONE

2008-02-06 14:20

CST

Yes

RNS

USGS

0.00

2.62

Unspecified

NONE

2007-12-21 10:25

CST

Yes

RNS

USGS

0.00

2.62

Unspecified

Clear

NONE

2007-10-15 13:05

CDT

Yes

RNS

USGS

0.00

2.62

Unspecified

NONE

2007-08-13 14:50

CDT

Yes

RNS

USGS

0.00

2.62

Unspecified

Clear

NONE

2007-06-28 15:08

CDT

Yes

RNS

USGS

16.5

4.22

-0.13

0.50

Fair

Unspecifed

NONE

2007-06-28 14:35

CDT

Yes

RNS

USGS

23.2

4.35

-0.12

0.50

Fair

Unspecifed

NONE

2007-06-28 14:05

CDT

Yes

RNS

USGS

30.6

4.46

-0.10

0.40

Fair

Unspecifed

NONE

2007-06-28 13:35

CDT

Yes

RNS

USGS

37.6

4.58

-0.17

0.60

Fair

Unspecifed

NONE

2007-06-28 13:05

CDT

Yes

RNS

USGS

48.9

4.75

-0.20

0.40

Fair

Unspecifed

NONE

2007-06-28 11:05

CDT

Yes

RNS

USGS

133

5.45

0.69

0.50

Fair

Unspecifed

NONE

2007-04-23 11:45

CDT

Yes

RNS

USGS

0.00

2.62

Unspecified

Clear

NONE

2007-02-20 11:00

CST

Yes

RNS

USGS

0.00

2.62

Unspecified

Clear

NONE

2007-01-30 10:30

CST

Yes

RNS

USGS

0.00

2.77

Unspecified

Clear

NONE

2006-12-15 10:05

CST

Yes

RNS

USGS

0.00

2.62

Unspecified

Clear

NONE

2006-11-17 11:00

CST

Yes

RNS/DET

USGS

0.00

2.62

Unspecified

Clear

NONE

2004-06-30 10:18

CDT

Yes

KCM

USGS

0.10

3.69

-0.07

1.00

Fair

Clear

NONE

2004-06-30 10:01

CDT

Yes

KCM

USGS

0.09

3.70

-0.07

1.00

Fair

Clear

NONE

2004-06-30 09:52

CDT

Yes

KCM

USGS

0.12

3.71

-0.07

1.00

Fair

Clear

NONE

2004-06-29 19:56

CDT

Yes

KCM

USGS

3.17

3.91

-0.04

1.00

Fair

Clear

NONE

2004-06-29 19:47

CDT

Yes

KCM

USGS

3.53

3.94

-0.04

1.00

Fair

Clear

NONE

2004-06-29 19:32

CDT

Yes

KCM

USGS

4.04

3.95

-0.07

1.00

Fair

Clear

NONE

2004-06-29 19:14

CDT

Yes

KCM

USGS

4.74

3.95

-0.07

1.00

Fair

Clear

NONE

2004-06-29 19:01

CDT

Yes

KCM

USGS

5.52

3.98

-0.07

1.00

Fair

Clear

NONE

2004-06-29 18:39

CDT

Yes

KCM

USGS

7.02

4.01

-0.12

1.00

Fair

Clear

NONE

2004-06-29 18:28

CDT

Yes

KCM

USGS

7.38

4.03

-0.12

1.00

Fair

Clear

NONE

2004-06-29 18:14

CDT

Yes

KCM

USGS

8.05

4.04

-0.12

1.00

Fair

Clear

NONE

2004-06-29 18:01

CDT

Yes

KCM

USGS

9.41

4.09

-0.12

1.00

Fair

Clear

NONE

2004-06-29 17:40

CDT

Yes

KCM

USGS

10.8

4.13

-0.12

1.00

Fair

Clear

NONE

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

Page Contact Information: Texas Water Data Support Team
Page Last Modified: 2025-12-14 13:49:46 EST
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