17155 - Stormwater Quantity Assessment Letter - Rev 0 · OPW17/0612

                                                          Post Dev [ALL STORMS]
                                                                        Total Flow

                          20yr 10min max [2.033]     50yr 10min max [2.540]            20yr 15min max [2.739]     50yr 15min max [3.216]

                          20yr 20min max [2.667]     50yr 20min max [2.908]            20yr 25min max [3.190]     50yr 25min max [3.370]

                          20yr 30min max [2.919]     50yr 30min max [3.194]            20yr 45min max [2.377]     50yr 45min max [2.610]

                          20yr 60min max [2.964]     50yr 60min max [3.241]            20yr 90min max [2.464]     50yr 90min max [2.593]

                         20yr 120min max [2.357]    50yr 120min max [2.461]           20yr 180min max [1.767]    50yr 180min max [1.888]

                         20yr 270min max [1.645]    50yr 270min max [1.737]           20yr 360min max [1.316]    50yr 360min max [1.403]

                         20yr 540min max [1.351]    50yr 540min max [1.384]           20yr 720min max [1.358]    50yr 720min max [1.477]

                         20yr 1080min max [1.016]   50yr 1080min max [1.089]          20yr 1440min max [1.055]   50yr 1440min max [1.158]

                         20yr 2160min max [0.745]   50yr 2160min max [0.828]          20yr 2880min max [0.715]   50yr 2880min max [0.786]

                         20yr 4320min max [0.530]   50yr 4320min max [0.588]


                   3.0

                   2.5
Total Flow [cms]




                   2.0

                   1.5

                   1.0

                   0.5

                   0.0
                                       0:30             1:00                   1:30                 2:00             2:30
               1 Thu Jan 2015                                                  Time


[OCR of page images]
Total Flow [cms]

20yr 10min max [2.033]

20yr 20min max [2.667]

 

20yr 30min max [2.919]
20yr 60min max [2.964]

Lt
20yr 120min max [2.357]

—
20yr 270min max [1.645]
20yr 540min max [1.351]

20yr 1080min max [1.016]

20yr 2160min max [0.745]

20yr 4320min max [0.530]

Post Dev [ALL STORMS]

Total Flow

5Oyr 10min max [2.540]

5Oyr 20min max [2.908]

50yr 30min max [3.194]

5Oyr 60min max [3.241]

_
50yr 120min max [2.461]
5O0yr 270min max [1.737]

5O0yr 540min max [1.384]

 

5Oyr 1080min max [1.089]

5Oyr 2160min max [0.828]

5O0yr 4320min max [0.588]

20yr 15min max [2.739]

 

20yr 25min max [3.190]

20yr 45min max [2.377]
20yr 90min max [2.464]
20yr 180min max [1.767]

20yr 360min max [1.316]

20yr 720min max [1.358]

20yr 1440min max [1.055]

 

20yr 2880min max [0.715]

 

 

 

 

1 Thu Jan 2015

5Oyr 15min max [3.216]
S5Oyr 25min max [3.370]
SOyr 45min max [2.610]

5Oyr 90min max [2.593]

5Oyr 180min max [1.888]

5Oyr 360min max [1.403]

 

SOyr 720min max [1.477]

50yr 1440min max [1.158]

50yr 2880min max [0.786]