वह प्रक्रिया जिसके द्वारा भूमि की सतह पर मौजूद पानी मिट्टी या पृथ्वी के स्तरों में प्रवेश करता है, कहलाती है:

The ratio of rainfall in a particular year to the Average Annual Rainfall (AAR) is defined as the:

A unit hydrograph represents a direct runoff hydrograph resulting from one unit depth of:

The peak of the outflow hydrograph will occur at the point of intersection of the inflow and outflow curves in which of the following cases?