Definitions for "Peak Flow"
The maximum amount of water that would result from a certain design storm. Usually based on the rainfall-duration-intensity relationship of a certain design storm and used when planning a stormwater system.
The maximum instantaneous discharge of a stream at a specific location. Corresponds to the highest stage of a flood.
Highest flow rate of a stream during or following a rainfall event. Usually related to a specific event recurrence interval (eg. a 1 in 10 year runoff event).