Site ID:

496

Lat.

35.3601

USA

Arkansas

River:

White

Long.

-91.4118

Site name:

Augusta

Contributing area:

52600

km2

Ratio to Comparison Station:

0.87

Latest measurement:

3-Sep-11

Mean annual runoff:

423

(2003-2009)

Hydrologic status:

Normal flow

Total runoff this year (2010):

528.6

Latest M/C ratio:

1.19

Seven day total:

3.3

Estimated current discharge:

314

m3/sec

Percent of mean 7-day total:

290.9

(today's value compared to mean for same period, 2003-2009)

5 yr recurrence flood:

4587

m3/sec

(from Log Pearson III analysis)

Status Codes: 1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood

4453

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

# USGS 07077000 White River at DeValls Bluff, AR

Contributing Area:

sq mi

60606

sq km

(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)

Notes:

Preliminary calibration to discharge has been accomplished.

Accuracy estimate:

Good

Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)

(For U.S, sites, nearby ground station discharge may also be shown)

Annual

Monthly Total Runoff (mm), computed from above satellite-based discharge data

Runoff

(mm)

Jan

Feb

Mar

April

May

June

July

Aug

Sept

Oct

Nov

Dec

2002

no data

4.5

6.7

12.1

19.0

35.0

266

2003

24.5

31.2

40.8

11.6

98.1

20.0

7.6

1.4

0.2

0.3

8.3

22.0

280

2004

29.1

26.5

28.2

22.3

55.0

11.5

10.3

0.3

2.2

10.3

32.3

52.3

396

2005

76.1

57.6

48.7

84.6

14.8

11.6

1.0

8.0

8.8

17.5

58.9

169

2006

21.4

25.3

34.7

16.9

35.5

8.8

8.9

7.4

4.7

5.7

0.0

467

2007

111.0

95.2

65.9

44.1

52.7

24.4

11.3

4.0

5.8

5.5

10.9

36.3

646

2008

24.1

41.0

146.9

212.6

128.5

21.3

22.8

7.3

10.9

4.5

6.5

19.8

735

2009

18.6

60.6

47.7

69.1

117.3

42.2

34.0

32.2

12.5

60.9

138.6

101.1

529

2010

94.3

82.1

77.7

99.5

87.6

21.8

15.5

9.3

5.2

4.4

11.6

19.6

Mean Annual Runoff (mm):

423

Standard Deviation:

195.9

Trend in Annual Runoff (slope):

78.8

Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.

Green line records upwelling microwave emission from within 5 km radius of a calbration land target.

Explanation:

Blue line is emission from within 5 km radius of the measurement target centered over the river.

Brown line is their ratio (M/C; "HR" in Brakenridge et al 2007; scale on right) and is used to estimate river discharge via a rating equation.

GoogleEarth View of Measurement Site

Return

Estimated

Discharge

Date

m3/sec

22-Jul-02

805

23-Jul-02

805

24-Jul-02

729

25-Jul-02

556

26-Jul-02

428

27-Jul-02

345

28-Jul-02

354

29-Jul-02

130

30-Jul-02

168

31-Jul-02

187

1-Aug-02

135

2-Aug-02

221

3-Aug-02

4-Aug-02

5-Aug-02

6-Aug-02

7-Aug-02

8-Aug-02

9-Aug-02

10-Aug-02

166

11-Aug-02

102

12-Aug-02

13-Aug-02

14-Aug-02

15-Aug-02

16-Aug-02

17-Aug-02

18-Aug-02

386

19-Aug-02

226

20-Aug-02

210

21-Aug-02

161

22-Aug-02

225

23-Aug-02

248

24-Aug-02

218

25-Aug-02

219

26-Aug-02

27-Aug-02

28-Aug-02

29-Aug-02

30-Aug-02

31-Aug-02

1-Sep-02

2-Sep-02

120

3-Sep-02

195

4-Sep-02

203

5-Sep-02

101

6-Sep-02

7-Sep-02

8-Sep-02

9-Sep-02

10-Sep-02

165

11-Sep-02

12-Sep-02

13-Sep-02

134

14-Sep-02

134

15-Sep-02

119

16-Sep-02

115

17-Sep-02

18-Sep-02

19-Sep-02

20-Sep-02

21-Sep-02

22-Sep-02

124

23-Sep-02

260

24-Sep-02

260

25-Sep-02

434

26-Sep-02

362

27-Sep-02

257

28-Sep-02

257