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Flood Investigation & Stormwater Quantity Management Plan

Attached to the e-mail Doonella Stage C (Email 4 of 7) IDAS Forms 1 & 6 and Flood Investigation - OPW14/0197.

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Flood Investigation & Stormwater Quantity Management Plan
Proposed Residential Development at Doonella - Stage C

D1                  25.00       2.50           1.00
D2                  25.00       2.50           1.00
OUT                 25.00       2.50           1.00
#####END_LOSS_RATES
#####START_RECORDED_HYDROGRAPHS
           0
#####END_RECORDED_HYDROGRAPHS
#####START_IMPORTED_HYDROGRAPHS
           0
#####END_IMPORTED_HYDROGRAPHS
#####END_STORM#1

#####START_RESULTS_STORM_1

#####START_CATCHMENT_SUMMARY############################################
Catchment area   (hectares) =        18.18
Impervious percent      (%) =        50.46
Rainfall depth         (mm) =        51.70
Excess rainfall        (mm) =        38.02
Calc. runoff depth     (mm) =        37.88 - from bottom subarea
Recd. runoff depth     (mm) =         0.00 - from bottom subarea
Calc. peak discharge (m3/s) =         1.698 - from bottom subarea
Recd. peak discharge (m3/s) =         0.000 - from bottom subarea
#####END_CATCHMENT_SUMMARY##############################################

#####START_VOLUME_SUMMARY#######################################################################
SUBAREA DIRECTED IMPORTED       LOCAL      LOCAL    DIRECTED    IMPORTED     OUTFLOW     BALANCE
           TO TOP   TO TOP   PERVIOUS IMPERVIOUS   TO BOTTOM   TO BOTTOM
         (Volumes in thousands m3)
A
       0.000        0.000       0.495      0.220       0.000       0.000       0.715       0.000
B1
       0.715        0.000       0.405      0.929       0.000       0.000       2.047       0.002
Dodonaea
       2.047        0.000       0.000      0.000       0.000       0.000       2.046       0.001
B2
       2.053        0.000       0.200      0.377       0.000       0.000       2.621       0.009
C1
       0.000        0.000       0.140      0.532       0.000       0.000       0.672       0.000
C3
       0.000        0.000       0.009      0.072       0.000       0.000       0.081       0.000
C2
       0.081        0.000       0.129      0.613       0.000       0.000       0.821       0.002
Twigrush
       1.493        0.000       0.000      0.000       0.000       0.000       1.493       0.000
D3
       0.000        0.000       0.336      0.240       0.000       0.000       0.576       0.000
D1
       0.000        0.000       0.058      0.100       4.136       0.000       4.294       0.000
D2
       4.870        0.000       0.473      1.567       0.000       0.000       6.888       0.023
OUT
       6.888        0.000       0.000      0.000       0.000       0.000       6.888       0.000
#####END_VOLUME_SUMMARY#########################################################################

#####START_PEAK_SUMMARY###############################################################
SUBAREA OUT_STR       STREAM  STREAM     LOCAL     LOCAL    DIRECTED OUTLET_STRUCTURE
         1=exist         TOP  BOTTOM PERVIOUS IMPERVIOUS TO BOTTOM INFLOW       OUTFLOW
                   including                               including
                 imported to                             imported to
                        TOP                                  BOTTOM
                                                                   (Discharges in m3/s)
A             0        0.000   0.000     0.218     0.161     0.000      0.289     0.289
B1            0        0.289   0.228     0.187     0.638     0.000      0.830     0.830
Dodonaea      1        0.830   0.830     0.000     0.000     0.000      0.830     0.482
B2            1        0.482   0.477     0.105     0.270     0.000      0.631     0.631
C1            0        0.000   0.000     0.078     0.375     0.000      0.431     0.431
C3            1        0.000   0.000     0.009     0.055     0.000      0.063     0.063
C2            0        0.063   0.034     0.072     0.430     0.000      0.512     0.512
Twigrush      1        0.943   0.943     0.000     0.000     0.000      0.943     0.302
D3            0        0.000   0.000     0.161     0.175     0.000      0.270     0.270
D1            0        0.000   0.000     0.036     0.076     0.913      0.979     0.979
D2            0        1.217   1.082     0.211     1.047     0.000      1.698     1.698


B09182.W-02A


[OCR of page images]
Flood Investigation & Stormwater Quantity Management Plan
Proposed Residential Development at Doonella - Stage C

BROW

Smart Wi

  
 

N

 

D1 25.00 2.50 1.00
D2 25.00 2.50 1.00
OUT 25.00 2.50 1.00

#####END_LOSS_RATES

#####S TART_RECORDED_HYDROGRAPHS
0

#####END_RECORDED_HYDROGRAPHS

#####S TART_IMPORTED_HYDROGRAPHS
0

#####END_IMPORTED_HYDROGRAPHS

##H#4#END_STORM#1

#####START_RESULTS_STORM_1

#HHHS TART_CATCHMENT_SUMMARY #4444344: # HEH AEH HEA AEE HE AE AE

Catchment area (hectares) = 18.18
Impervious percent (%) = 50.46
Rainfall depth (mm) = 51.70
Excess rainfall (mm) = 38.02
Calc. runoff depth (mm) = 37.88 - from bottom subarea
Recd. runoff depth (mm) = 0.00 - from bottom subarea
Calc. peak discharge (m3/s) = 1.698 - from bottom subarea
Recd. peak discharge (m3/s) = 0.000 - from bottom subarea

##AHEND_CATCHMENT_SUMMARY #4444434 EEE A HEH A HEH HEE HEE AE

#HHHSTART_VOLUME_SUMMAR Y #4444 #444 AEE HEAT AE A AEA EAE EAE AEE AEA EAE EEE
SUBAREA DIRECTED IMPORTED LOCAL LOCAL DIRECTED IMPORTED OUTFLOW BALANCE
TO TOP TO TOP PERVIOUS IMPERVIOUS TO BOTTOM TO BOTTOM
(Volumes in thousands m3)

A

0.000 0.000 0.495 0.220 0.000 0.000 0.715 0.000
Bl

0.715 0.000 0.405 0.929 0.000 0.000 2.047 0.002
Dodonaea

2.047 0.000 0.000 0.000 0.000 0.000 2.046 0.001
B2

2.053 0.000 0.200 0.377 0.000 0.000 2.621 0.009
cl

0.000 0.000 0.140 0.532 0.000 0.000 0.672 0.000
c3

0.000 0.000 0.009 0.072 0.000 0.000 0.081 0.000
c2

0.081 0.000 0.129 0.613 0.000 0.000 0.821 0.002
Twigrush

1.493 0.000 0.000 0.000 0.000 0.000 1.493 0.000
D3

0.000 0.000 0.336 0.240 0.000 0.000 0.576 0.000
Dl

0.000 0.000 0.058 0.100 4.136 0.000 4.294 0.000
D2

4.870 0.000 0.473 1.567 0.000 0.000 6.888 0.023
OUT

6.888 0.000 0.000 0.000 0.000 0.000 6.888 0.000

##HAHEND_VOLUME_SUMMAR Y #4444444 EEE EEE A HEE AEE HEE HE EAE AE

##HHHSTART_PEAK_SUMMAR Y #444 AH A AH A HA AE A AE EEE

SUBAREA OUT_STR STREAM STREAM LOCAL LOCAL DIRECTED OUTLET_STRUCTURE
1=exist TOP BOTTOM PERVIOUS IMPERVIOUS TO BOTTOM INFLOW OUTFLOW

including including

imported to imported to

TOP BOTTOM
(Discharges in m3/s)
A 0 0.000 0.000 0.218 0.161 0.000 0.289 0.289
Bl 0 0.289 0.228 0.187 0.638 0.000 0.830 0.830
Dodonaea 1 0.830 0.830 0.000 0.000 0.000 0.830 0.482
B2 1 0.482 0.477 0.105 0.270 0.000 0.631 0.631
cl 0 0.000 0.000 0.078 0.375 0.000 0.431 0.431
c3 1 0.000 0.000 0.009 0.055 0.000 0.063 0.063
c2 0 0.063 0.034 0.072 0.430 0.000 0.512 0.512
Twigrush 1 0.943 0.943 0.000 0.000 0.000 0.943 0.302
D3 0 0.000 0.000 0.161 0.175 0.000 0.270 0.270
Dl 0 0.000 0.000 0.036 0.076 0.913 0.979 0.979
D2 0 1.217 1.082 0.211 1.047 0.000 1.698 1.698

 

B09182.W-02A

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