Useful links
Old GTU papers https://drive.google.com/drive/folders/1rZxfEWX5iBIbpmQsHeZtrSzktYQrqqzB Book https://drive.google.com/file/d/13NLALq5E2R5_0EHgeCBLBcwUEXhm2jzY/view?usp=drivesdk
Posts
5 Measurement and Analysis of Rainfall
Measurement and Analysis of Rainfall Rainfall measurement is crucial for water resource management, hydrological studies, and climate analysis. The process involves using rain gauges to collect precipitation data and employing various statistical and spatial methods to analyze the recorded rainfall. 1. Non-Recording Rain Gauges Non-recording rain gauges measure the total rainfall over a specific period but do not provide continuous records of rainfall intensity or variations. The collected water is manually measured at regular intervals. (a) Symon’s Rain Gauge Standard non-recording rain gauge used in India. Consists of a circular collector (127 mm diameter) that directs rainwater into a receiving bottle through a funnel. Collected rainfall is measured using a graduated measuring jar. Readings are taken once or twice a day. (b) IMD (Indian Meteorological Department) Rain Gauge Similar to Symon’s gauge but with specific modifications as per IMD standards. The body is made of fiber-rei...
Practical 1 To determine rate of infiltration and infiltration capacity using double ring infiltrometer
Practical to Determine Rate of Infiltration and Infiltration Capacity Using Double Ring Infiltrometer Objective: To determine the rate of infiltration and infiltration capacity of soil using a double-ring infiltrometer. Equipment Needed: Double-ring infiltrometer – consists of two concentric metal rings (inner and outer). Measuring cylinder or container for water. Stopwatch or timer. Ruler or measuring tape. Bucket for water supply. Calculator for calculating infiltration rates. Soil auger or hand tool to remove soil for setting up the rings. Leveling device (e.g., spirit level) for ensuring rings are set properly. Theory: Infiltration refers to the process by which water enters the soil. The rate of infiltration is the amount of water that enters the soil per unit of time (e.g., cm/hr). Infiltration capacity refers to the maximum rate at which soil can absorb water. It is typically determined at the start of the test when the infiltration rate is highest. Procedure: Site ...