Several types of empirical expressions have been developed from time to time to predict peak rate of runoff from agricultural watersheds. Some of the most common expressions are described below: 1. Rational Method: The oldest and the most famous hydrological model of predicting peak rate of runoff is the rational formula, expressed as: q = CIA …(3.2) where, q = [...]
After reading this article you will learn about estimating the volume of runoff. Knowledge of the volume of runoff from a watershed is necessary to design the water storage system and surplussing arrangements. Different mathematical models that are developed to predict runoff deal mainly with precipitation characteristics affecting runoff amount and peak rates. In an attempt to simplify and standardize [...]
After reading this article you will learn about the hydrologic cycle and its components. Runoff, a potential carrier of nutrients and sediment to streams and lakes is best described in the science of hydrology. Two basic physical principles governing the amount and distribution of water on the earth are those of mass conservation and energy conservation. These principles, along with [...]