USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

USGS 04010510 GRAND PORTAGE RIVER AT GRAND PORTAGE MN

Cook County, Minnesota

Hydrologic Unit Code 04010101

Latitude 47°57'49", Longitude 89°41'00" NAD27

Drainage area 7.0 square miles

Gage datum 598.45 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
54	2024-10-09 16:59:05	CDT	Yes	RBB/ZBH	USGS	0.46	15.79	0.00	0.50	Fair	DebrisHeavy	NONE
53	2024-08-05 15:51	CDT	Yes	rbb/jrh	USGS	0.90	15.75	0.00	0.40	Poor	Clear	NONE
52	2024-07-09 13:29	CDT	Yes	jrh/jts	USGS	9.02	16.21	0.01	0.20	Fair	Clear	NONE
51	2024-05-28 13:13	CDT	Yes	RBB	USGS	10.3	16.23	0.01	0.50	Good	Clear	NONE
50	2024-04-15 15:45	CDT	Yes	JDL	USGS	8.18	16.17	0.01	0.50	Fair	Clear	NONE
49	2024-02-13 07:27:30	CST	Yes	jdl/zbh	USGS	2.08	15.91	0.00	0.40	Poor	IceCover	NONE
48	2024-01-19 08:35	CST	Yes	rbb/jdl	USGS	1.03	16.33	0.00	0.25	Poor	IceCover	NONE
47	2023-12-12 08:15:30	CST	Yes	jdl/jjc	USGS	0.54	15.74	0.00	0.20	Poor	IceCover	NONE
46	2023-10-11 07:36	CDT	Yes	JDL/JJC	USGS	0.55	15.70	0.00	0.20	Poor	Clear	NONE
45	2023-08-15 07:49	CDT	Yes	jdl/jjc	USGS	17.2	16.38	0.00	0.30	Fair	Clear	NONE
44	2023-07-24 15:14	CDT	Yes	RBB	USGS	0.89	15.69	0.00	0.35	Fair	Clear	NONE
43	2023-06-13 08:37	CDT	Yes	jdl/jjc	USGS	3.34	15.87	0.00	0.30	Fair	Clear	NONE
42	2023-06-01 07:26	CDT	Yes	RBB/ZBH.	USGS	5.28	16.02	0.00	0.50	Good	Clear	NONE
41	2023-04-18 12:50	CDT	Yes	RBB	USGS	47.5	16.71	0.03	0.60	Fair	Clear	NONE
40	2023-04-11 07:37:04	CDT	Yes	jdl/jjc	USGS	35.2	18.58	0.00	0.50	Fair	IceCover	NONE
39	2023-03-28 13:58	CDT	Yes	RBB/JDL	USGS	2.49	16.00	0.00	0.26	Poor	IceCover	NONE
38	2023-02-14 07:49:11	CST	Yes	jdl/jjc	USGS	1.55	15.92	0.00	0.30	Poor	IceCover	NONE
37	2023-02-06 14:03:30	CST	Yes	rbb/zbh	USGS	2.03	15.95	0.00	0.12	Poor	IceCover	NONE
36	2022-12-21 07:40:30	CST	Yes	JDL/ZBH	USGS	3.72	16.15	0.00	0.30	Poor	IceCover	NONE
35	2022-10-27 08:23	CDT	Yes	jdl/jjc	USGS	1.29	15.91	0.00	0.30	Poor	DebrisLight	NONE
34	2022-08-17 07:21	CDT	Yes	jdl/jjc	USGS	1.62	15.87	0.00	0.30	Fair	Clear	NONE
33	2022-06-22 07:26	CDT	Yes	jdl/jjc	USGS	10.3	16.23	0.00	0.30	Fair	Clear	NONE
32	2022-05-12 10:04	CDT	Yes	JJC	USGS	305	18.14	-0.10	0.20	Poor	DebrisModerate	NONE
31	2022-04-28 07:27:09	CDT	Yes	JDL/JJC	USGS	36.9	16.79	0.02	0.30	Fair	Clear	NONE
30	2022-04-14 08:13:06	CDT	Yes	JDL	USGS	97.4	17.31	0.03	0.30	Poor	Clear	NONE
29	2022-04-13 15:29:02	CDT	Yes	JDL	USGS	58.1	17.02	0.08	0.30	Fair	Clear	NONE
28	2022-02-16 07:27:36	CST	Yes	JDL/JJC	USGS	0.95	16.05	0.00	0.30	Poor	IceCover	NONE
27	2022-01-19 07:48	CST	Yes	JDL/JJC	USGS	1.78	15.97	0.00	0.30	Poor	IceCover	NONE
26	2021-10-05 12:52	CDT	Yes	JDL	USGS	0.66	15.77	0.00	0.30	Poor	DebrisLight	NONE
25	2021-08-17 15:40	CDT	Yes	JDL/JJC	USGS	0.47	15.71	0.00	0.30	Fair	Clear	NONE
24	2021-08-12 13:00	CDT	Yes	JDL	USGS	1.54	15.85	0.00	0.30	Fair	Clear	NONE
23	2021-06-16 15:57	CDT	Yes	JDL/RBB	USGS	3.86	16.04	0.00	0.30	Fair	Clear	NONE
22	2021-04-14 07:23:09	CDT	Yes	jdl/jjc	USGS	34.0	16.70	0.00	0.30	Fair	Clear	NONE
21	2021-04-01 14:28	CDT	Yes	jdl	USGS	6.70	16.38	0.00	0.30	Poor	IceCover	NONE
20	2021-03-15 16:07	CDT	Yes	JDL/RBB	USGS	1.36	15.94	0.00	0.30	Poor	IceCover	NONE
19	2021-02-09 07:43	CST	Yes	JDL/JJC	USGS	0.31	15.83	0.00	0.10	Poor	IceCover	NONE
18	2020-12-14 09:28:30	CST	Yes	jdl/jjc	USGS	1.50	16.27	0.02	0.40	Poor	IceCover	NONE
17	2020-10-21 08:52	CDT	Yes	ZBH/ESW/RBB/	USGS	7.81	16.28	0.00	0.30	Fair	Clear	NONE
16	1992-10-27 -- --	--	Yes	HOB	USGS	4.56	0.75	0.00	0.50	Good	DebrisLight	NONE
15	1992-09-09 11:05	CDT	Yes	HOB	USGS	12.4	1.04	0.00	0.40	Good	Clear	NONE
14	1992-08-04 16:50	CDT	Yes	GRM	USGS	0.67	0.55	0.00	0.50	Poor	DebrisLight	NONE
13	1992-06-23 11:45	CDT	Yes	HOB	USGS	1.28	0.62	0.00	0.40	Good	Clear	NONE
12	1992-05-12 12:50	CDT	Yes	HOB	USGS	86.7	1.99	0.00	0.40	Good	Clear	NONE
11	1992-04-28 14:45	CDT	Yes	HOB	USGS	37.3	1.40	0.02	0.30	Good	Clear	NONE
10	1992-04-15 08:45	CDT	Yes	GRM	USGS	8.29	0.96	0.00	0.40	Good	Clear	NONE
9	1992-03-31 10:40	CST	Yes	GRM	USGS	1.82	0.78	-0.01	0.30	Fair	IceShore	NONE
8	1992-02-19 12:00	CST	Yes	HOB	USGS	0.80	0.88	0.00	0.30	Fair	IceCover	NONE
7	1992-01-07 12:45	CST	Yes	GRM	USGS	2.55	0.72	0.00	0.30	Fair	IceCover	NONE
6	1991-11-19 08:25	CST	Yes	HOB	USGS	61.5	1.76	-0.02	0.40	Good	Clear	NONE
5	1991-09-24 15:10	CDT	Yes	GRM	USGS	1.06	0.62	0.00	0.40	Fair	Clear	NONE
4	1991-09-12 15:10	CDT	Yes	WAG	USGS	0.40	0.52	0.00	0.70	Fair	Clear	NONE
3	1991-08-06 12:45	CDT	Yes	HOB	USGS	0.16	0.50	0.00	0.30	Good	Clear	NONE
2	1991-06-12 16:25	CDT	Yes	HOB/TC	USGS	1.10	0.60	0.00	0.30	Good	Clear	NONE
1	1991-05-13 17:10	CDT	Yes	JLZ/WAG	USGS	8.83	0.94	0.00	0.40	Fair	DebrisLight	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

2024-10-09 16:59:05

CDT

Yes

RBB/ZBH

USGS

0.46

15.79

0.00

0.50

Fair

DebrisHeavy

NONE

2024-08-05 15:51

CDT

Yes

rbb/jrh

USGS

0.90

15.75

0.00

0.40

Poor

Clear

NONE

2024-07-09 13:29

CDT

Yes

jrh/jts

USGS

9.02

16.21

0.01

0.20

Fair

Clear

NONE

2024-05-28 13:13

CDT

Yes

RBB

USGS

10.3

16.23

0.01

0.50

Good

Clear

NONE

2024-04-15 15:45

CDT

Yes

JDL

USGS

8.18

16.17

0.01

0.50

Fair

Clear

NONE

2024-02-13 07:27:30

CST

Yes

jdl/zbh

USGS

2.08

15.91

0.00

0.40

Poor

IceCover

NONE

2024-01-19 08:35

CST

Yes

rbb/jdl

USGS

1.03

16.33

0.00

0.25

Poor

IceCover

NONE

2023-12-12 08:15:30

CST

Yes

jdl/jjc

USGS

0.54

15.74

0.00

0.20

Poor

IceCover

NONE

2023-10-11 07:36

CDT

Yes

JDL/JJC

USGS

0.55

15.70

0.00

0.20

Poor

Clear

NONE

2023-08-15 07:49

CDT

Yes

jdl/jjc

USGS

17.2

16.38

0.00

0.30

Fair

Clear

NONE

2023-07-24 15:14

CDT

Yes

RBB

USGS

0.89

15.69

0.00

0.35

Fair

Clear

NONE

2023-06-13 08:37

CDT

Yes

jdl/jjc

USGS

3.34

15.87

0.00

0.30

Fair

Clear

NONE

2023-06-01 07:26

CDT

Yes

RBB/ZBH.

USGS

5.28

16.02

0.00

0.50

Good

Clear

NONE

2023-04-18 12:50

CDT

Yes

RBB

USGS

47.5

16.71

0.03

0.60

Fair

Clear

NONE

2023-04-11 07:37:04

CDT

Yes

jdl/jjc

USGS

35.2

18.58

0.00

0.50

Fair

IceCover

NONE

2023-03-28 13:58

CDT

Yes

RBB/JDL

USGS

2.49

16.00

0.00

0.26

Poor

IceCover

NONE

2023-02-14 07:49:11

CST

Yes

jdl/jjc

USGS

1.55

15.92

0.00

0.30

Poor

IceCover

NONE

2023-02-06 14:03:30

CST

Yes

rbb/zbh

USGS

2.03

15.95

0.00

0.12

Poor

IceCover

NONE

2022-12-21 07:40:30

CST

Yes

JDL/ZBH

USGS

3.72

16.15

0.00

0.30

Poor

IceCover

NONE

2022-10-27 08:23

CDT

Yes

jdl/jjc

USGS

1.29

15.91

0.00

0.30

Poor

DebrisLight

NONE

2022-08-17 07:21

CDT

Yes

jdl/jjc

USGS

1.62

15.87

0.00

0.30

Fair

Clear

NONE

2022-06-22 07:26

CDT

Yes

jdl/jjc

USGS

10.3

16.23

0.00

0.30

Fair

Clear

NONE

2022-05-12 10:04

CDT

Yes

JJC

USGS

305

18.14

-0.10

0.20

Poor

DebrisModerate

NONE

2022-04-28 07:27:09

CDT

Yes

JDL/JJC

USGS

36.9

16.79

0.02

0.30

Fair

Clear

NONE

2022-04-14 08:13:06

CDT

Yes

JDL

USGS

97.4

17.31

0.03

0.30

Poor

Clear

NONE

2022-04-13 15:29:02

CDT

Yes

JDL

USGS

58.1

17.02

0.08

0.30

Fair

Clear

NONE

2022-02-16 07:27:36

CST

Yes

JDL/JJC

USGS

0.95

16.05

0.00

0.30

Poor

IceCover

NONE

2022-01-19 07:48

CST

Yes

JDL/JJC

USGS

1.78

15.97

0.00

0.30

Poor

IceCover

NONE

2021-10-05 12:52

CDT

Yes

JDL

USGS

0.66

15.77

0.00

0.30

Poor

DebrisLight

NONE

2021-08-17 15:40

CDT

Yes

JDL/JJC

USGS

0.47

15.71

0.00

0.30

Fair

Clear

NONE

2021-08-12 13:00

CDT

Yes

JDL

USGS

1.54

15.85

0.00

0.30

Fair

Clear

NONE

2021-06-16 15:57

CDT

Yes

JDL/RBB

USGS

3.86

16.04

0.00

0.30

Fair

Clear

NONE

2021-04-14 07:23:09

CDT

Yes

jdl/jjc

USGS

34.0

16.70

0.00

0.30

Fair

Clear

NONE

2021-04-01 14:28

CDT

Yes

jdl

USGS

6.70

16.38

0.00

0.30

Poor

IceCover

NONE

2021-03-15 16:07

CDT

Yes

JDL/RBB

USGS

1.36

15.94

0.00

0.30

Poor

IceCover

NONE

2021-02-09 07:43

CST

Yes

JDL/JJC

USGS

0.31

15.83

0.00

0.10

Poor

IceCover

NONE

2020-12-14 09:28:30

CST

Yes

jdl/jjc

USGS

1.50

16.27

0.02

0.40

Poor

IceCover

NONE

2020-10-21 08:52

CDT

Yes

ZBH/ESW/RBB/

USGS

7.81

16.28

0.00

0.30

Fair

Clear

NONE

1992-10-27 -- --

Yes

HOB

USGS

4.56

0.75

0.00

0.50

Good

DebrisLight

NONE

1992-09-09 11:05

CDT

Yes

HOB

USGS

12.4

1.04

0.00

0.40

Good

Clear

NONE

1992-08-04 16:50

CDT

Yes

GRM

USGS

0.67

0.55

0.00

0.50

Poor

DebrisLight

NONE

1992-06-23 11:45

CDT

Yes

HOB

USGS

1.28

0.62

0.00

0.40

Good

Clear

NONE

1992-05-12 12:50

CDT

Yes

HOB

USGS

86.7

1.99

0.00

0.40

Good

Clear

NONE

1992-04-28 14:45

CDT

Yes

HOB

USGS

37.3

1.40

0.02

0.30

Good

Clear

NONE

1992-04-15 08:45

CDT

Yes

GRM

USGS

8.29

0.96

0.00

0.40

Good

Clear

NONE

1992-03-31 10:40

CST

Yes

GRM

USGS

1.82

0.78

-0.01

0.30

Fair

IceShore

NONE

1992-02-19 12:00

CST

Yes

HOB

USGS

0.80

0.88

0.00

0.30

Fair

IceCover

NONE

1992-01-07 12:45

CST

Yes

GRM

USGS

2.55

0.72

0.00

0.30

Fair

IceCover

NONE

1991-11-19 08:25

CST

Yes

HOB

USGS

61.5

1.76

-0.02

0.40

Good

Clear

NONE

1991-09-24 15:10

CDT

Yes

GRM

USGS

1.06

0.62

0.00

0.40

Fair

Clear

NONE

1991-09-12 15:10

CDT

Yes

WAG

USGS

0.40

0.52

0.00

0.70

Fair

Clear

NONE

1991-08-06 12:45

CDT

Yes

HOB

USGS

0.16

0.50

0.00

0.30

Good

Clear

NONE

1991-06-12 16:25

CDT

Yes

HOB/TC

USGS

1.10

0.60

0.00

0.30

Good

Clear

NONE

1991-05-13 17:10

CDT

Yes

JLZ/WAG

USGS

8.83

0.94

0.00

0.40

Fair

DebrisLight

NONE