HW_3

HW_3 - CE 451 Water Resource Engineering 2/17/2010 Home...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 CE 451 Water Resource Engineering 2/17/2010 Home Work #3 3.27. A storm lasting 6hr has 1.55 in. of rain and produces the following flows Time, hr Flow,cfs Time, hr Flow,cfs 0 20 28 110 4 110 32 80 8 180 36 60 12 250 40 40 16 200 44 30 20 160 48 20 24 130 The basin has an area of 12.5 mi 2 . Find the peak of the unit hydrograph. What fraction of the precipitation appeared as runoff? Assume negligible base flow. 3.33 . The rainfall-runoff relation for the 775-km 2 beaver creek basin under dry-soil condition is as follows: Rainfall,mm 2-hr storm runoff,mm 4-hr storm runoff,mm 6-hr storm runoff,mm 15 0 0 0 50 20 10 3 75 40 28 20 100 66 50 41 125 89 76 66 A storm of 2-hr effective duration occurred over this basin at a time when the soil was dry. The resulting hydrograph was as follows: Time, hr Flow, m 3 /s Time, hr Flow, m 3 /s 0 0 9 450 3 340 12 280 6 570 15 85 (a) Determine the number of millimeter of runoff from the basin resulting from this storm. Assume zero base flow.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/13/2010 for the course CE 451 taught by Professor Lee during the Spring '07 term at USC.

Page1 / 3

HW_3 - CE 451 Water Resource Engineering 2/17/2010 Home...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online