Selected Water Discharge Data from Norfork and Bull Shoals Dams

The data contained below is a portion of the data collected from the Little Rock District of the Corps of Engineers as linked from the Ozark Hydro-thon web page. Times have been converted to Universal Time (UT) for consistency of comparison to datalogger data that is part of the GLOBE Program dataset. In order to estimate the effect of any amount of water released, a travel time has been added to the release time and the joint effect of both discharges is estimated in cubic feet per second at the bottomland datalogger site in the rightmost column below. A two hour travel time has been added to the Norfork Dam releases and a twelve hour travel time has been added to the Bull Shoals Dam releases.

Thus the following formula is being used to calculate the discharge event at the datalogger site.
Norfork Dam release time + 5 hr (CDT) correction factor + 2 hr travel time = Norfork Releases
Bull Shoals Dam release time + 5 hr (CDT) correction factor + 12 hr travel time = Bull Shoals Releases
Norfork Releases + Bull Shoals Releases =
Combined Releases

Example for 24 Sep 2003

Norfork

Bull Shoals

combined

Date

UT

Discharge (cfs)

UT

Discharge (cfs)

23-Sep-03

2400

2972

23-Sep-03

2400

50

3022

24-Sep-03

100

2828

24-Sep-03

100

50

2878

24-Sep-03

200

2660

24-Sep-03

200

50

2710

24-Sep-03

300

20

24-Sep-03

300

50

70

24-Sep-03

400

20

24-Sep-03

400

50

70

24-Sep-03

500

20

24-Sep-03

500

50

70

24-Sep-03

600

20

24-Sep-03

600

50

70

24-Sep-03

700

20

24-Sep-03

700

50

70

24-Sep-03

800

20

24-Sep-03

800

50

70

24-Sep-03

900

20

24-Sep-03

900

1874

1894

24-Sep-03

1000

20

24-Sep-03

1000

1826

1846

24-Sep-03

1100

20

24-Sep-03

1100

1946

1966

24-Sep-03

1200

20

24-Sep-03

1200

50

70

24-Sep-03

1300

20

24-Sep-03

1300

50

70

24-Sep-03

1400

20

24-Sep-03

1400

50

70

24-Sep-03

1500

20

24-Sep-03

1500

50

70

24-Sep-03

1600

20

24-Sep-03

1600

50

70

24-Sep-03

1700

20

24-Sep-03

1700

50

70

24-Sep-03

1800

20

24-Sep-03

1800

50

70

24-Sep-03

1900

20

24-Sep-03

1900

50

70

24-Sep-03

2000

1700

24-Sep-03

2000

50

1750

24-Sep-03

2100

2396

24-Sep-03

2100

50

2446

24-Sep-03

2200

3404

24-Sep-03

2200

50

3454

24-Sep-03

2300

3212

24-Sep-03

2300

50

3262

24-Sep-03

2400

3428

24-Sep-03

2400

506

3934


Diurnal graph of 24 Sep 2003