Following four types are the most widely used recording rain gauges: Type # 1. Symon’s Rain Gauge: The Indian Meteorological Department has adopted Symon's rain gauge (Fig. 2.3). A glass bottle and funnel with brass rim are put in a metallic cylinder such that the top of the cylinder is 30.5 cm above the ground level. Rain water falls into [...]
Hydrology is the science of water which deals with the spatial and temporal characteristics of the earth's water. In other words, hydrology is the study of water in all its phases, including the occurrence, movement, distribution, circulation, storage, exploration, development and management. The atmospheric air always contains moisture. Under favourable conditions, this moisture gets condensed and water drops are formed. [...]
Most commonly used methods for stream gauging are: 1. Area-Velocity Method 2. Area Slope Method 3. Discharge Measuring Structures. 1. Area-Velocity Method: It should be noted that depth of flow varies in a section of a stream across the main flow direction. Likewise, the velocity of flow too varies from point to point within a cross-sectional area of the stream. [...]