B07056.W-01A Complete - Stormwater [As Published] · 132007.2398

                                                                                                           Appendix C
 MANNING'S CALCULATION
Filename:     H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\[Manning's Calcs MS 071017.xls]Sthn
Date:         22/10/2007
By:           MS

Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)

Southern Dam
South XS 1 - Downstream of Dam
CROSS SECTION DETAILS                                         EXISTING 100 YEAR ARI
  POINT         CH           Z                     n          wA       wP      n x wA



     1                0.000           103.000
     2                4.480           102.750    0.045        0.15      2.33      0.01
     3                5.340           102.500    0.045        0.22      0.90      0.01
     4                6.130           102.250    0.045        0.40      0.83      0.02
     5                7.320           102.500    0.045        0.60      1.22      0.03
     6                8.460           102.750    0.045        0.29      1.17      0.013
     7                9.570           103.000    0.045        0.04      0.59      0.002
     8               21.860           103.000    0.045
     9
     10
     11
     12
     13
     14


                                                               wA       wP     n x wA
                                                TOTAL       1.698842 7.032164 0.076448
                       S
                     0.028                                      R        n         Q
                                                            0.241582   0.045      2.45
                                                Q100 Flow              2.46

                                                    WSL                102.88

                     Calculated by Manning's Equation                   2.45



           103.200



           103.000



           102.800



           102.600



           102.400



           102.200                                                              Existing Surface
                                                                                EXISTING 100 Y ARI WSL

           102.000
  -3.000                      2.000                7.000               12.000              17.000        22.000



H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\Manning's Calcs MS 071017