Question

An isochrone is a line on the map

• A. joining rainguage stations having equal rainfall duration
• B. joining points having equal rainfall depth in a given time interval
• C. joining points having equal time of travel of surface runoff to the catchment outlet.
• D. joining points which are at equal distance from the catchment outlet.

Answer 1

The correct option is C joining points having equal time of travel of surface runoff to the catchment outlet.

Isochrone is a line joining points having equal time of travel of surface runoff to the catchment's outlet.