Category: Irrigation Engineering # Canal Fall – MCQ

Canal Fall - MCQ 1. Ogee curve is a a) Concave curve.b) Convex curve.c) Combination of concave and convex curve.d) None. View Answer c) Combination of concave and convex curve. 2. Montague type of fall is a a) Rapid fall.b) Glacis fall.c) Modified Glacis fall.d) All of these. View Answer c) Modified Glacis fall. 3. … Continue reading Canal Fall – MCQ # Irrigation Efficiency – 4 Types of Irrigation Efficiency

What is Irrigation Efficiency? The amount of supplied water is not fully utilized for the growth of crops because there are several reasons for water loss. Irrigation efficiency is defined as the ratio of the amount of water available to the amount of water supplied from the reservoir. It is expressed in percentage. Different Types … Continue reading Irrigation Efficiency – 4 Types of Irrigation Efficiency # Empirical Formula Used For Determination of Runoff

Empirical Formula Used For Determination of Runoff The following empirical formulas or equations are generally used for estimating the runoff from a catchment: 1. Dicken's Formula Q = C × A3/4 Where, Q = Runoff in cumec. C = a coefficient varies from 11.5 to 25. A = Catchment area in sq. km. 2. Ryve's … Continue reading Empirical Formula Used For Determination of Runoff # Find out the Discharge of a Siphon Spillway – Problem & Solution

Find out the Discharge of a Siphon Spillway Mathematical Problem: Find out the discharge of a siphon spillway from following data: Number of siphon units = 4. Area at throat in m2 = 3. Full reservoir level = 150 m. R.L of centre of outlet = 128. Tailwater level on D/S side during rains = … Continue reading Find out the Discharge of a Siphon Spillway – Problem & Solution # Determine the Discharge of the Channel for which it is to be Designed

Determine the Discharge of the Channel for which it is to be Designed Mathematical Problem A channel is to be designed for irrigating 6000 hectares of Kharif crop and 5500 hectares of Rabi crop. The water requirement for the Kharif crop is 70 cm and the water requirement for Rabi is 35 cm. The Kor … Continue reading Determine the Discharge of the Channel for which it is to be Designed # How to Calculate Discharge of The Water If The Depth & Crop Period are Given

How to Calculate Discharge of The Water If The Depth & Crop Period are Given Mathematical Problem A Waterhouse has a culturable commanded area of 2200 hectares. The intensity of irrigation for crop A is 50% and for B is 35%, both the crops being Rabi crops. Crop A and B have a crop period … Continue reading How to Calculate Discharge of The Water If The Depth & Crop Period are Given # How to Calculate Annual Runoff? Problem & Solution

How to Calculate Annual Runoff? Mathematical Problem: For a catchment in M.P., India, the mean monthly rainfall and temperatures are given. Calculate the annual runoff by Khosla's formula. MonthJanFebMarAprMayJuneJulyAugSepOctNovDecTemp (°C)121621273134312928291914Rainfall4420212322916212 Solution: In Khosla's formula, Rm = Pm - Lm Where, Rm = Monthly runoff Pm = Monthly rainfall in cm Lm = (0.48 × T) … Continue reading How to Calculate Annual Runoff? Problem & Solution