GATE Soil and Water Conservation Engineering: Hydrology – Previous Year Questions
19 GATE previous year questions on Hydrology (Soil and Water Conservation Engineering, Agricultural Engineering) with answers and explanations, from every paper.
- GATE 2021 AG Q16 – Hydrologic reservoir-routing methods use .
- GATE 2021 AG Q44 – A catchment IUH is an isosceles triangle with peak60 m³/s at 3 h. Constant baseflow7.5 m³/s. Find the peak of its3-hour unit hydrograph in m³/s.
- GATE 2021 AG Q56 – A watershed receives90 mm rain. Initial abstraction=.25S. Forest retention S=136 mm changes to 64 mm after cultivation. Find percent change in daily…
- GATE 2022 AG Q18 – The shape of the falling limb of a hydrograph depends on .
- GATE 2022 AG Q56 – Rainfall is 152.4 mm. Land uses: residential40%, soil C, CN83; good open space25%, soil D, CN80; commercial20%, soil C, CN94; industrial15%, soil D,…
- GATE 2022 AG Q58 – Inflow ordinates at hours 0–9 are0,23,57,119,98,71,57,28,11,0 m³/s. Muskingum Δt=1 h, X=.2,K=.7 h. Find outflow at hour2 in m³/s, to two decimals.
- GATE 2023 AG Q25 – Which information is needed to estimate design flood using the Rational formula?
- GATE 2023 AG Q30 – A storm has return period20 years. Find probability it occurs once in five years, to two decimals.
- GATE 2023 AG Q41 – A six-hour S-hydrograph has ordinates0,30,90,180,252,306,342,360,360 m³/s at 0,6,12,18,24,30,36,42,48 hours. The φ-index is .25 cm/hour and base flow…
- GATE 2023 AG Q43 – Horton infiltration capacity is I=2+e-3t cm/hour with t in hours. A storm lasts two hours. Find infiltration depth during its last hour, in mm.
- GATE 2024 AG Q17 – Match P Current meter, Q Anemometer, R Hygrometer, S Symon’s gauge, T Pyranometer with 1 Solar radiation,2 Rainfall,3 Stream velocity,4 Humidity,5…
- GATE 2024 AG Q42 – A 10 ha watershed receives hourly intensities2,1,1.5,1 cm/hour over four hours. With φ-index1 cm/hour, find direct runoff volume in m³.
- GATE 2024 AG Q56 – Five rain gauges record annual rainfall90,100,80,120,110 cm. For5% permissible error in the mean, find the number of additional stations as an…
- GATE 2025 AG Q26 – Match P Isopleth, Q Isobath, R Isohyet, S Isochrone, T Isobar with 1 Rainfall,2 Pressure,3 Evapotranspiration,4 Groundwater,5 Surface runoff.
- GATE 2025 AG Q48 – A 10 ha watershed receives 15 mm rainfall with 5 mm evapotranspiration,4.5 mm infiltration,2.2 mm deep percolation,.5 mm detention storage and .3 mm…
- GATE 2025 AG Q51 – An 8 ha watershed receives successive half-hour rainfall intensities 2.5,3.6,5.4,3.3,2.6,1.2 cm/hour. Surface runoff is 4800 m³. Neglect initial…
- GATE 2026 AG Q25 – Depth–area–duration analysis gives maximum average rainfall depth 80 mm over a 103\,km2 catchment during a six-hour storm. For that same storm, how…
- GATE 2026 AG Q58 – A .80\,km2 watershed has slope .30% and maximum travel length 1 km. Ten-year rainfall depths at durations 5,10,20,30,40,60 minutes are…
- GATE 2026 AG Q59 – Meteorologically similar catchments M and N have (L,L ca,A) equal to (36\,km,18\,km,250\,km2) and (50,30,400) respectively. M’s six-hour unit…