USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 13172454 Snake River blw Swan Falls Dam, ID

Ada County, Idaho

Hydrologic Unit Code 17050103

Latitude 43°14'57.72", Longitude 116°23'01.71" NAD83

Drainage area 41,900 square miles

Contributing drainage area 41,900 square miles

Gage datum 2,280 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
18	2025-09-23 09:06:23	MDT	Yes	EBS, KMH	USGS	7110	85.15			Good	Clear	NONE
17	2025-02-27 10:28:41	MST	Yes	EBS/KML	USGS	7550	85.18			Good	Clear	NONE
16	2024-09-19 10:05:07	MDT	Yes	JCW/KMH	USGS	7680	85.44			Good		NONE
15	2024-03-12 10:04:56	MDT	Yes	JCW/KMH	USGS	6420	84.18			Fair	Unspecifed	NONE
14	2023-09-19 09:34:30	MDT	Yes	IDC/SRP	USGS	6240	84.43	-0.01	0.40	Good	Clear	NONE
13	2023-02-22 09:41:09	MST	Yes	EBS, JCW	USGS	5830	83.98			Good		NONE
12	2022-08-31 09:02:47	MDT	Yes	JPC/EBS	USGS	5460	83.27			Fair	Clear	NONE
11	2022-04-26 09:42:38	MDT	Yes	DLG/RMF	USGS	6230	84.30			Good	Clear	NONE
10	2021-08-24 09:17:06	MDT	Yes	REM/DLG	USGS	5810	84.05	0.01	0.40	Good		NONE
9	2021-03-09 09:03:50	MST	Yes	CMM/JPC	Unspe	6480	84.52	-0.03	0.50	Good	Clear	NONE
8	2020-08-04 09:01:23	MDT	Yes	DLG/SRP	USGS	6560	84.67			Good	Clear	NONE
7	2020-04-02 09:29:19	MDT	Yes	DLG/SRP	USGS	9850	87.01			Good	Clear	NONE
6	2019-08-07 09:50:03	MDT	Yes	JPC/REM	USGS	6350	84.54			Good		NONE
5	2019-03-28 10:27:41	MDT	Yes	GJP/CR	USGS	15600	90.21			Good	Clear	NONE
4	2018-06-08 09:47:10	MDT	Yes	JPC	USGS	16200	90.61			Fair		NONE
3	2017-12-12 10:25:51	MST	Yes	JPC/DLG	USGS	12100	88.54			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

2025-09-23 09:06:23

MDT

Yes

EBS, KMH

USGS

7110

85.15

Good

Clear

NONE

2025-02-27 10:28:41

MST

Yes

EBS/KML

USGS

7550

85.18

Good

Clear

NONE

2024-09-19 10:05:07

MDT

Yes

JCW/KMH

USGS

7680

85.44

Good

NONE

2024-03-12 10:04:56

MDT

Yes

JCW/KMH

USGS

6420

84.18

Fair

Unspecifed

NONE

2023-09-19 09:34:30

MDT

Yes

IDC/SRP

USGS

6240

84.43

-0.01

0.40

Good

Clear

NONE

2023-02-22 09:41:09

MST

Yes

EBS, JCW

USGS

5830

83.98

Good

NONE

2022-08-31 09:02:47

MDT

Yes

JPC/EBS

USGS

5460

83.27

Fair

Clear

NONE

2022-04-26 09:42:38

MDT

Yes

DLG/RMF

USGS

6230

84.30

Good

Clear

NONE

2021-08-24 09:17:06

MDT

Yes

REM/DLG

USGS

5810

84.05

0.01

0.40

Good

NONE

2021-03-09 09:03:50

MST

Yes

CMM/JPC

Unspe

6480

84.52

-0.03

0.50

Good

Clear

NONE

2020-08-04 09:01:23

MDT

Yes

DLG/SRP

USGS

6560

84.67

Good

Clear

NONE

2020-04-02 09:29:19

MDT

Yes

DLG/SRP

USGS

9850

87.01

Good

Clear

NONE

2019-08-07 09:50:03

MDT

Yes

JPC/REM

USGS

6350

84.54

Good

NONE

2019-03-28 10:27:41

MDT

Yes

GJP/CR

USGS

15600

90.21

Good

Clear

NONE

2018-06-08 09:47:10

MDT

Yes

JPC

USGS

16200

90.61

Fair

NONE

2017-12-12 10:25:51

MST

Yes

JPC/DLG

USGS

12100

88.54

Good

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: Idaho Water Data Support Team
Page Last Modified: 2025-10-02 22:32:47 EDT
0.27 0.27 caww01