Dendritic pattern develops where the river channel follows the slope of terrain. The stream resembles the branches of a tree.
A river joined by tributaries at approximately right angles develops trellis pattern. It's formed where hard and soft rocks exist parallel to each other.
A rectangular drainage pattern develops on strongly jointed rocky terrain.
Radial is when streams flow in different directions from a central dome like structure.
Ganga river follows every pattern in its path