Narellan Creek Overland Flood Study (Vol 1) - Flipbook - Page 60
Narellan Creek Catchment
Flood Study
information can be used to provide an assessment of the capacity of each pit and pipe in the
stormwater system. In doing so, it allows identification of where stormwater capacity
constraints may exist across the catchment.
The pipe flow results of all design flood simulations were interrogated to determine the
capacity of each stormwater pipe in terms of a nominal return period (i.e., AEP). The
capacity of the pipe was defined as the largest design event whereby the pipe was not
flowing completely full. For example, if a particular stormwater pipe was flowing 95% full
during the 10% AEP event and 100% full during the 5% AEP event, the pipe capacity would
be defined as
