In this article we will discuss about:- 1. Meaning of Runoff Hydrograph 2. Components of Hydrograph 3. Factors Affecting the Shape 4. Base Flow Separation. Meaning of Runoff Hydrograph: Hydrograph is a graphical or tabular presentation of instantaneous runoff/discharge rate against time. Sometimes, it is also known as storm hydrograph, flood hydrograph or simply hydrograph. A hydrograph presents the total [...]
In this article we will discuss about how to compute runoff caused due to rainfall using unit hydrograph. Introduction to Unit Hydrograph: If two identical rainfalls regarding their characteristics take place in a drainage basin having the same conditions prior to the rainfall, the runoff hydrographs from the two storms would be the same. This is the basic concept used [...]
Accurate computation of runoff amount from a watershed is difficult, as it depends on several factors concerned with the atmosphere and watershed characteristics, to evaluate which effect on runoff is not so easy. On the basis of field experiences and observations, the following methods are frequently used in the field of soil and water conservation for estimating the maximum or [...]