GATE CE 2025 Set 1 — Question 39

MCQ+2 / -0.67MediumPrecipitationHydrology & PrecipitationWater Resources Engineering

Water Resources Engineering → Hydrology & Precipitation → Precipitation

Last updated 5 September 2026

Question

The mean rainfall over a catchment has to be estimated. The data for four rain gauges located in and around the catchment is listed in the table. Which one of the following statements is correct: Rain gauge station P Q R S Whether located inside the catchment Yes Yes Yes No Thiessen weightage factor 0.25 0.50 0.10 0.15 Rainfall (mm) 100110100125

Rain gauge station	P	Q	R	S
Whether located inside the catchment	Yes	Yes	Yes	No
Thiessen weightage factor	0.25	0.50	0.10	0.15
Rainfall (mm)	100	110	100	125

P_{am} = \frac{100 + 110 + 100}{3} = \frac{310}{3} \approx 103.33 \text{ mm}

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P_{am} = \frac{100 + 110 + 100}{3} = \frac{310}{3} \approx 103.33 \text{ mm}

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