Appendix F

                                                                                                                                   8
 Hydrograph Report
 Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2010 by Autodesk, Inc. v9.25                              Tuesday, Apr 5, 2011


 Hyd. No. 6
 DETENTION BASIN

 Hydrograph type                    = Reservoir                  Peak discharge                             = 0.091 cms
 Storm frequency                    = 2 yrs                      Time to peak                               = 9 min
 Time interval                      = 1 min                      Hyd. volume                                = 64.5 cum
 Inflow hyd. No.                    = 4 - post development catchment
                                                                 Max.3 Elevation                            = 7.89 m
 Reservoir name                     = DETENTION TANK             Max. Storage                               = 21.8 cum

 Storage Indication method used.




                                                        DETENTION BASIN
Q (cms)                                                                                                                          Q (cms)
                                                           Hyd. No. 6 -- 2 Year
0.180                                                                                                                            0.180




0.150                                                                                                                            0.150




0.120                                                                                                                            0.120




0.090                                                                                                                            0.090




0.060                                                                                                                            0.060




0.030                                                                                                                            0.030




0.000                                                                                                                            0.000
          0     2       4      6      8     10     12     14     16      18     20     22   24   26    28    30      32     34
                                                                                                                          Time (min)
                  Hyd No. 6                      Hyd No. 4                        Total storage used = 21.8 cum