USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 05587498 Mississippi River Pool Lock and Dam 26 at Alton,IL

Madison County, Illinois

Hydrologic Unit Code 07110009

Latitude 38°53'14.3", Longitude 90°11'02.4" NAD83

Gage datum 399.66 feet above NAVD88

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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
21	2024-11-20 10:46:38	CST	Yes	JAH/KB	USGS	56900	19.09	-0.03	0.25	Good		unkn
20	2024-10-02 10:22:03	CDT	Yes	HOE	USGS	34900	19.06	-0.02	0.22	Fair	Clear	unkn
19	2024-09-04 09:46:02	CDT	Yes	JAH/KB	USGS	79100	18.93	0.01	0.25	Good		unkn
18	2024-08-21 09:59:09	CDT	Yes	JAH/KB	USGS	109000	16.97	0.01	0.22	Good		unkn
17	2024-07-22 13:26:09	CDT	Yes	JAH / KB	USGS	312000	17.54	-0.01	0.30	Good		unkn
16	2024-06-11 11:50	CDT	Yes	JAH/KB	USGS	247000	14.70	-0.01	0.27	Good		unkn
15	2024-05-08 09:47:09	CDT	Yes	JAH/KB	USGS	242000	17.20	0.01	0.23	Good		unkn
14	2024-04-02 09:57:07	CDT	Yes	HE/kb/js	USGS	135000	18.85	0.01	0.27	Good	Clear	unkn
13	2024-03-05 12:58:21	CST	Yes	JAH KRB	USGS	67200	19.13	0.00	0.25	Fair		unkn
12	2024-02-14 10:06:23	CST	Yes	JAH	USGS	116000	18.23	0.00	0.25	Good		unkn
11	2023-12-19 05:42:22	CST	Yes	JAH	USGS	47100	19.42	0.00	0.22	Good		unkn
10	2023-11-07 14:24:55	CST	Yes	RD	USGS	65900	19.50	-0.03	0.40	Good	Clear	unkn
9	2023-10-03 10:28:01	CDT	Yes	HE/KB/JS	USGS	45300	19.36	0.00	0.40	Good	Clear	unkn
8	2023-08-09 10:12:07	CDT	Yes	KB JS JC	USGS	40500	19.21	0.01	0.20	Fair	Clear	unkn
7	2023-07-26 11:27:01	CDT	Yes	JJS	USGS	41700	19.19	0.00	0.20	Good		unkn
6	2023-06-27 04:43	CDT	Yes	js/kb/js	USGS	49400	18.53	0.00	0.38	Fair	Unspecifed	unkn
5	2023-05-24 10:31:09	CDT	Yes	ER / KB	USGS	234000	14.18	0.02	0.48	Good	Clear	unkn
4	2023-05-10 11:07:01	CDT	Yes	KB/JS/SS	USGS	307000	14.94	0.02	0.57	Good	Clear	unkn
3	2023-04-25 11:32:08	CDT	Yes	HE	USGS	219000	14.34	0.04	0.47	Good	Clear	unkn
2	2023-04-04 11:15	CDT	Yes	HE	USGS	169000	15.82	0.01	0.42	Good	Clear	unkn
1	2023-03-08 19:21:29	CST	Yes	HE/KB/JS	USGS	199000	14.48	0.00	0.52	Fair	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

2024-11-20 10:46:38

CST

Yes

JAH/KB

USGS

56900

19.09

-0.03

0.25

Good

unkn

2024-10-02 10:22:03

CDT

Yes

HOE

USGS

34900

19.06

-0.02

0.22

Fair

Clear

unkn

2024-09-04 09:46:02

CDT

Yes

JAH/KB

USGS

79100

18.93

0.01

0.25

Good

unkn

2024-08-21 09:59:09

CDT

Yes

JAH/KB

USGS

109000

16.97

0.01

0.22

Good

unkn

2024-07-22 13:26:09

CDT

Yes

JAH / KB

USGS

312000

17.54

-0.01

0.30

Good

unkn

2024-06-11 11:50

CDT

Yes

JAH/KB

USGS

247000

14.70

-0.01

0.27

Good

unkn

2024-05-08 09:47:09

CDT

Yes

JAH/KB

USGS

242000

17.20

0.01

0.23

Good

unkn

2024-04-02 09:57:07

CDT

Yes

HE/kb/js

USGS

135000

18.85

0.01

0.27

Good

Clear

unkn

2024-03-05 12:58:21

CST

Yes

JAH KRB

USGS

67200

19.13

0.00

0.25

Fair

unkn

2024-02-14 10:06:23

CST

Yes

JAH

USGS

116000

18.23

0.00

0.25

Good

unkn

2023-12-19 05:42:22

CST

Yes

JAH

USGS

47100

19.42

0.00

0.22

Good

unkn

2023-11-07 14:24:55

CST

Yes

USGS

65900

19.50

-0.03

0.40

Good

Clear

unkn

2023-10-03 10:28:01

CDT

Yes

HE/KB/JS

USGS

45300

19.36

0.00

0.40

Good

Clear

unkn

2023-08-09 10:12:07

CDT

Yes

KB JS JC

USGS

40500

19.21

0.01

0.20

Fair

Clear

unkn

2023-07-26 11:27:01

CDT

Yes

JJS

USGS

41700

19.19

0.00

0.20

Good

unkn

2023-06-27 04:43

CDT

Yes

js/kb/js

USGS

49400

18.53

0.00

0.38

Fair

Unspecifed

unkn

2023-05-24 10:31:09

CDT

Yes

ER / KB

USGS

234000

14.18

0.02

0.48

Good

Clear

unkn

2023-05-10 11:07:01

CDT

Yes

KB/JS/SS

USGS

307000

14.94

0.02

0.57

Good

Clear

unkn

2023-04-25 11:32:08

CDT

Yes

USGS

219000

14.34

0.04

0.47

Good

Clear

unkn

2023-04-04 11:15

CDT

Yes

USGS

169000

15.82

0.01

0.42

Good

Clear

unkn

2023-03-08 19:21:29

CST

Yes

HE/KB/JS

USGS

199000

14.48

0.00

0.52

Fair

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: Missouri Water Data Support Team
Page Last Modified: 2025-01-31 23:57:10 EST
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