What is another word for time of concentration?
Pronunciation: [tˈa͡ɪm ɒv kˌɒnsəntɹˈe͡ɪʃən] (IPA) 
Time of concentration refers to the length of time that it takes for rainwater to travel from the watershed's most remote point to a specific point along the watershed's outlet. It's an important concept in the field of hydrology, a branch of science that deals with the study of water in the Earth's system. Some synonyms for time of concentration include lag time, travel time, and hydraulic length. Lag time usually refers to the length of time it takes for the peak flow rate to reach a certain point in the watershed after the start of rainfall. Hydraulic length refers to the length of the longest flow path between a point and the watershed outlet.
