GATE Water Resources and Environmental Hydraulics: Groundwater Resources – Previous Year Questions
11 GATE previous year questions on Groundwater Resources (Water Resources and Environmental Hydraulics, Environmental Science and Engineering) with answers and explanations, from every paper.
- GATE 2021 ES Q17 – For aquifer saturated thickness d, hydraulic conductivity K and transmissivity T, which relation holds?
- GATE 2021 ES Q56 – A permeable formation has porosity20%,hydraulic gradient2%,and actual seepage velocity .0025 m/s. Assume laminar flow. Find hydraulic conductivity K…
- GATE 2021 ES Q57 – A leaking waste tank maintains .5 mg/L contaminant. A well is 2 km away;effective travel speed .4 m/day. First-order contaminant half-life10 years.…
- GATE 2022 ES Q19 – Choose the standard decreasing order of hydraulic conductivity.
- GATE 2022 ES Q57 – Reservoir levels differ20 m across a 2 km long,5 m thick confined aquifer. K=.003 m/s, porosity .3. Find advective contaminant travel time in days, to…
- GATE 2023 ES Q29 – Glycerin and kerosene have kinematic viscosities1.2 and .95 times water. They flow through identical porous media at equal hydraulic gradients,…
- GATE 2023 ES Q54 – A confined aquifer has thickness16 m, K25 m/day and a fully penetrating well pumping.1 m³/s at steady state. Drawdown at 75 m is 3.5 m. Find drawdown…
- GATE 2024 ES Q40 – Two isotropic homogeneous aquifer layers have thicknesses h 1 h 2 and horizontal conductivities K 1,K 2. Flow is parallel to stratification as shown.…
- GATE 2025 ES Q35 – An unconfined aquifer covers 20 km×20 km, has conductivity 4 m/day, porosity .32,specific yield .18 and initial saturated thickness 30 m. Extract 4108…
- GATE 2025 ES Q54 – A confined aquifer is 30 m thick with K=5 m/day and porosity .3. Observation wells X, Y are at radii100,200 m from a fully penetrating pumping well.…
- GATE 2026 ES Q57 – An unconfined aquifer has an initial head of 25 m. After long-term pumping at .05\,m3/s,drawdowns are 3 m at radius 50 m and 1.2 m at radius 150 m.…