Mains Hydrogeology Paper III
Stage-II Mains (Descriptive Type)
Hydrogeology Paper III
Section A. Occurrence and distribution of groundwater
Origin of water on Earth; global water cycle and budget; residence time concept, geologic formations as aquifers; confined and unconfined aquifers; groundwater table mapping and piezometric nests; porosity, void ratio, effective porosity and representative porosity range; primary and secondary porosities; groundwater zonation; specific retention, specific yield; groundwater basins; springs. Section B. Groundwater movement and well hydraulics Groundwater flow concepts; Darcy’s Law in isotropic and anisotropic media and validity; water flow rates, direction and water volume in aquifers; permeability and hydraulic conductivity and ranges in representative rocks; Bernoulli equation; determination of hydraulic conductivity in field and laboratory; concept of groundwater flow through dispersion and diffusion; transmissivity and aquifer thickness.
Section C. Water wells and groundwater levels
Unidirectional and radial flow to a well (steady and unsteady); well flow near aquifer boundaries; methods for constructing shallow wells, drilling wells, well completion; testing wells, pumping test, slug tests for confined and unconfined aquifers; fluctuations in groundwater levels; stream flow and groundwater flows; groundwater level fluctuations; land subsidence; impact of global climate change on groundwater.
Section D. Groundwater exploration
Surface investigation of groundwater- geologic, remote sensing, electrical resistivity, seismic, gravity and magnetic methods; sub-surface investigation of groundwater- test drilling, resistivity logging, spontaneous potential logging, radiation logging.
Section E. Groundwater quality and management
Groundwater composition, units of expression, mass-balance calculations; rock-water interaction (chemical equilibrium, free energy, redox reactions and cation/anion exchanges), graphic representation of chemical data; groundwater hardness, microorganisms in groundwater; water quality standards; sea-water intrusion; groundwater issues due to urbanization; solid and liquid waste disposal and plume migration models; application of isotopes (H, C, O) in groundwater; concepts of artificial recharge methods; managing groundwater resources; groundwater basin
investigations and management practices.
Combined Geo Scientist exam application Fee – Rs. 200/-
Age Limits 21-32 years-Relaxation-Educational Qualification-M.Sc-
Chemist, Group A – 15 Vacancies-Hydrogeology-16 Vacancies-Geophysics-06 Vacancies
All over India 19 Centres-Bhopal, Chennai, Delhi, Dispur,Cuttack…
Download e-Admit Card -three weeks before the commencement of the Examination.
Paper-I : General Studies-100 Marks-Paper-II : Core Subject-300 Marks-Main Exam-600 Marks
CGSE Preliminary Exam Date – 21st February, 2021 Main Exam Date – 17th & 18th July, 2021
Online Applications can be filled up to 27th October, 2020 Application Form containing two stages viz.Part-I and Part-II contact UPSC’s Facilitation Counter Telephone No. 011-23385271
Stage-I : 400 Marks-Stage-II : 600 Marks-Stage-III: 200 Marks
communications to the Commission-Mobile Phones Banned-