The release rules of Shihmen Reservoir of Taiwan are established using inflow records of 59 historical typhoons and the probable maximum flood.
Calculations show that in an extreme year with a "probable maximum flood," the spillway would be far too small.
In either case, the detention pond has more space to accommodate the flood inflow so as to reduce the rate of peak outflow.
Traditionally, deterministic flood procedures such as the Probable Maximum Flood have been used for critical infrastructure design.
Probable maximum snow accumulation (PMSA) is one of the key variables used to estimate the spring probable maximum flood (PMF).
The maximum flood discharge per unit area is inversely related to the size of the basin.
The maximum flood risk is in YZ, which indicates that this area would experience more flooding during an El Niño decaying summer; the flood risk reaches as high as 1.7.
An estimate of the probable maximum rate of runoff may be required for the design of channels, drains or culverts, or to estimate maximum flood levels.
b Maximum flooding surface of the Shaximiao Formation.
The combination of hydrological and hydraulic models was evaluated using post-flood surveys defining maximum flooded area and flood depths.
