Formulas For Channels

Question 1

Formulas for channels:

Cfs

Answer 1

Cross section area in sq ft x average velocity of water in ft/sec (FPS)

Question 2

Formulas for channels:

Cross section area of rectangular channel in sq ft

Answer 2

Average width in ft x average depth in ft

Question 3

Formulas for channels:

Ppmv

Answer 3

(Gal of chemical x 1,000,000) / (cfs x 450 x minutes applied)

Question 4

Formulas for channels:

Gal of chemical / cfs

Answer 4

(Ppmv x 450 x cfs x minutes applied) / 1,000,000

Question 5

Formulas for channels:

Total gal of chemical required

Answer 5

(Ppmv x 450 x cfs x minutes applied) / 1,000,000

Question 6

Formulas for channels:

Ppmv

Answer 6

(Lbs of chemical x 1,000,000) / (cfs x 3,744 x minutes applied) OR (gal of formulation x lbs ai / gal x 1,000,000) / (cfs x 3,744 x minutes applied)

Question 7

Formulas for channels: lbs of chemical / cfs

Answer 7

(Ppmv x 3,744 x minutes applied) / 1,000,000

Question 8

Formulas for channels:

Gals of formulation / cfs

Answer 8

(Ppmv x 3,744 x minutes applied) / (lbs ai/ gals x 1,000,000)