*2.5. Boundary Condition*

As this study was conducted from a planning perspective, the more conservative steady stream condition was chosen for the upstream boundary flow condition.

The flow discharge of the Nangang River and the tributary of the Mei River during each return period are shown in Table 2 in accordance to the Nangang River planning report [15]. The flow discharge will be used as the upstream boundary condition for steady flow simulation in the future.


**Table 2.** Upstream inflow conditions for different return periods.

Units: cms.
