K V NAFEESATHUL MISRIYA
RAJYESHWAR R
S SRUTHI 

Groundwater is a crucial natural resource for domestic, agricultural, and industrial use, and its
sustainable management requires accurate assessment of its availability and distribution. This
study focuses on the delineation of groundwater potential zones and estimation of well yield in
the Anjarakandy watershed using a GIS-based well hydraulics approach. Various thematic
layers such as geology, geomorphology, slope, drainage density, and land use/land cover are
integrated within a Geographic Information System (GIS) environment, and the Analytical
Hierarchy Process (AHP) is applied to assign weights and generate a groundwater potential
map through weighted overlay analysis. The study classifies the area into low, moderate, high,
and very high groundwater potential zones. To validate the results, Vertical Electrical Sounding
(VES) is conducted to analyze subsurface resistivity and identify aquifer zones, showing good
agreement with GIS findings. Additionally, well hydraulics analysis is performed using field
data to estimate aquifer properties such as transmissivity, permeability, and well yield. The
integration of geospatial, geophysical, and hydraulic methods provides a comprehensive and
reliable assessment of groundwater resources, supporting sustainable water management,
efficient well placement, and long-term resource planning.

Keywords: Groundwater potential zones, GIS, AHP, Well hydraulics, Well yield estimation,
VES, Aquifer characteristics, Hydrogeology, Spatial analysis, Sustainable water management