USGS Surface Water for Colorado: Streamflow Measurements

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Streamflow Measurements for Colorado

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USGS 09011000 COLORADO RIVER NEAR GRAND LAKE, CO.

Grand County, Colorado

Hydrologic Unit Code 14010001

Latitude 40°13'08", Longitude 105°51'25" NAD27

Drainage area 102 square miles

Gage datum 8,380.00 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
535	2008-11-13 11:48	MST	Yes	SLH/NMS	USGS	28.3				Poor	Clear	NONE
534	1986-10-09 -- --	--	Yes	RR	USGS	59.0	3.96	0.00	0.50	Fair	Clear	NONE
533	1986-08-27 -- --	--	Yes	RR	USGS	38.3	3.82	0.00	0.50	Fair	Clear	NONE
532	1986-07-15 -- --	--	Yes	RR	USGS	63.1	4.02	-0.03	0.50	Fair	Clear	NONE
531	1986-06-13 -- --	--	Yes	RR	USGS	453	5.54	-0.02	1.00	Fair	Clear	NONE
530	1986-05-21 -- --	--	Yes	RR	USGS	345	5.28	0.00	1.00	Fair	Clear	NONE
529	1986-04-10 -- --	--	Yes	RR	USGS	54.9	3.96	-0.01	0.50	Fair	Clear	NONE
528	1986-03-04 -- --	--	Yes	RR	USGS	21.3	3.59	0.00	0.50	Fair	IceShore	NONE
527	1986-01-16 -- --	--	Yes	RR	USGS	18.3	3.55	-0.01	1.00	Fair	IceCover	NONE
526	1985-11-21 -- --	--	Yes	RR	USGS	28.8	3.70	0.00	0.50	Fair	IceCover	NONE
525	1985-10-02 -- --	--	Yes	RR	USGS	36.4	3.74	0.00	0.50	Fair	Clear	NONE
524	1985-09-12 -- --	--	Yes	RR	USGS	34.7	3.75	0.01	0.50	Fair	Clear	NONE
523	1985-08-08 -- --	--	Yes	RR	USGS	41.8	3.80	0.02	0.80	Fair	Clear	NONE
522	1985-07-10 -- --	--	Yes	RR	USGS	7.74	3.29	0.00	0.60	Fair	Clear	NONE
521	1985-06-13 -- --	--	Yes	RR	USGS	345	5.26	-0.02	1.10	Fair	Clear	NONE
520	1985-05-23 -- --	--	Yes	R R/TED	USGS	238	4.94	0.00	0.80	Fair	Clear	NONE
519	1985-04-18 -- --	--	Yes	GBO	USGS	140	4.50	0.01	0.50	Fair	Clear	NONE
518	1985-03-12 -- --	--	Yes	RAY	USGS	20.3	3.54	0.00	0.70	Fair	IceCover	NONE
517	1985-02-05 -- --	--	Yes	RAY	USGS	20.0	3.70	-0.03	0.80	Fair	IceCover	NONE
516	1984-12-18 -- --	--	Yes	RAY	USGS	29.1	3.67	0.00	0.50	Fair	IceShore	NONE
515	1984-11-08 -- --	--	Yes	RAY	USGS	43.1	3.87	0.00	0.60	Fair	Clear	NONE
514	1984-10-05 -- --	--	Yes	RAY	USGS	65.3	4.11	0.00	0.90	Fair	Clear	NONE
513	1984-08-21 -- --	--	Yes	RAY	USGS	137	4.42	-0.01	1.10	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

535

2008-11-13 11:48

MST

Yes

SLH/NMS

USGS

28.3

Poor

Clear

NONE

534

1986-10-09 -- --

Yes

USGS

59.0

3.96

0.00

0.50

Fair

Clear

NONE

533

1986-08-27 -- --

Yes

USGS

38.3

3.82

0.00

0.50

Fair

Clear

NONE

532

1986-07-15 -- --

Yes

USGS

63.1

4.02

-0.03

0.50

Fair

Clear

NONE

531

1986-06-13 -- --

Yes

USGS

453

5.54

-0.02

1.00

Fair

Clear

NONE

530

1986-05-21 -- --

Yes

USGS

345

5.28

0.00

1.00

Fair

Clear

NONE

529

1986-04-10 -- --

Yes

USGS

54.9

3.96

-0.01

0.50

Fair

Clear

NONE

528

1986-03-04 -- --

Yes

USGS

21.3

3.59

0.00

0.50

Fair

IceShore

NONE

527

1986-01-16 -- --

Yes

USGS

18.3

3.55

-0.01

1.00

Fair

IceCover

NONE

526

1985-11-21 -- --

Yes

USGS

28.8

3.70

0.00

0.50

Fair

IceCover

NONE

525

1985-10-02 -- --

Yes

USGS

36.4

3.74

0.00

0.50

Fair

Clear

NONE

524

1985-09-12 -- --

Yes

USGS

34.7

3.75

0.01

0.50

Fair

Clear

NONE

523

1985-08-08 -- --

Yes

USGS

41.8

3.80

0.02

0.80

Fair

Clear

NONE

522

1985-07-10 -- --

Yes

USGS

7.74

3.29

0.00

0.60

Fair

Clear

NONE

521

1985-06-13 -- --

Yes

USGS

345

5.26

-0.02

1.10

Fair

Clear

NONE

520

1985-05-23 -- --

Yes

R R/TED

USGS

238

4.94

0.00

0.80

Fair

Clear

NONE

519

1985-04-18 -- --

Yes

GBO

USGS

140

4.50

0.01

0.50

Fair

Clear

NONE

518

1985-03-12 -- --

Yes

RAY

USGS

20.3

3.54

0.00

0.70

Fair

IceCover

NONE

517

1985-02-05 -- --

Yes

RAY

USGS

20.0

3.70

-0.03

0.80

Fair

IceCover

NONE

516

1984-12-18 -- --

Yes

RAY

USGS

29.1

3.67

0.00

0.50

Fair

IceShore

NONE

515

1984-11-08 -- --

Yes

RAY

USGS

43.1

3.87

0.00

0.60

Fair

Clear

NONE

514

1984-10-05 -- --

Yes

RAY

USGS

65.3

4.11

0.00

0.90

Fair

Clear

NONE

513

1984-08-21 -- --

Yes

RAY

USGS

137

4.42

-0.01

1.10

Fair

Clear

NONE

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

Page Contact Information: Colorado Water Data Support Team
Page Last Modified: 2025-12-19 03:08:37 EST
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