Att 2 SWMP

Modelling Parameters
Project number:                          20210121
Street Address:              16 Rene St, Noosaville
Locality:                    Noosaville, Noosa Shire Council

ARR Datahub Parameters
Input Data Information                            Storm Losses                      Temporal Patterns
Latitude:                              -26.413755 Storm Initial Losses          27 Code                            EC North
Longitude:                             153.042472 Storm Continuing Losses       2.6

WBNM Parameters
Catchments
                             Existing Site            Developed Site                                                  Existing Site          Developed Site
Area                                         0.013                     0.013       Non-Linearity Exponent                              0.77                     0.77
Fraction Impervious                          47.39                      67.3       Initial Loss (Base*)                                   27                      27
Lag Parameter                                   1.6                       1.6      Continuing Loss                                       2.6                     2.6
Impervious Lag Factor                           0.1                       0.1      Impervious Initial Loss                                 0                       0
                                                                                   * Initial loss used in models is reduced by pre-burst storm event

OSD
Roof Tank                                                                          Biogarden
Storage                      H                        S                            Storage                        H                          S
                         0                       0                       0                                     0                        0                          0
                         1                       1                0.00375                                      1 0.6**                                         0.009
                         2                       2                   0.075                                     2                       0.8                    0.0019
                                                                                                               3                         1                    0.0029
                                                                                   ** assumed media porosity of 0.3

Low Flow Diameter                               25 mm                              Low Flow Diameter                                 100 mm
Low Flow Elevation                               1m                                Low Flow Elevation                                   0m
High Flow Diameter                              90 mm                              Weir Length                                        2.4 mm
High Flow Elevation                            1.9 m                               Weir Elevation                                     0.8 m
Pervious Flow to OSD                             0%                                Weir Coefficient                                  1.66
Impervious Flow to OSD                       14.54 %                               Pervious Flow to OSD                                 0%
                                                                                   Impervious Flow to OSD                           29.54 %