The Bayana basin has been analyzed morphometrically considering five watersheds. Watershed 4 is found out to be highly active tectonically. We also analyzed gravity and bathymetric (topographic) variation in the basin. The result shows positive anomalies at places (~50 mGal) indicating either uplifted basement blocks or the presence of denser igneous bodies. Negative anomalies are noticed up to -35 mGal over areas with thicker sedimentary sequences or less dense materials. The bathymetry (topographic) elevation is lowest around 200 m near the Bayana town compared to the surrounding region which reaches up to ~ 1000 m. This kind of elevated distribution indicates a relatively steep gradient along the basin's eastern side, while the western side shows a more gradual slope. We investigate the empirical orthogonal function (EOF)-based gravity modeling and an analytical solution of gravity. The gravity as a function of bathymetry (topography) is estimated and the results are examined.