NOVELTY - The arrangement (1) comprises horizontal axis water wheel (2) having several portable rectangular fronted straight blades (23) of high lift-to-drag ratio Pack B, Pack F or expanded airfoil profiles. The airfoil profiles are horizontally attached to circular side plates of cylindrical drum (22). The circular side plates and axle of water wheel is combined to form single element. An inclined converging penstock (3) is attached to housing of water wheel by bolts at converging outlet end (31?) and is opened to water source at bell mouth shaped inlet (31) end and very low head dam (4).    USE - Fixed portable very low head high torque and rotation middle-shot water wheel arrangement for producing mechanical and electrical powers in shallow rivers and tributary of hilly and mountainous region.    ADVANTAGE - As the drum, side plates, blades and interior surfaces of the housing sheets of water wheel and screen and interior surfaces of the penstock are coated with suitable super hydrophobic paint in the winter season at hilly regions, the performance of water wheel arrangement is increased. Since the axle, drum and side plates are formed as one portion and blades and housing sheets as separate portion of water wheel, the convenience of manufactures, transporters and operators is enhanced. The water wheel with flexible operating parameters for working as middle-shot water wheel throughout the year is provided. The portable water wheel for convenient and economical manufacturing, transportation, fabrication, installation and maintenance is ensured. The less skilled operator to fabricate, install, replace and repair this water wheel arrangement is facilitated.    DESCRIPTION OF DRAWING(S) - The drawing shows a vertical cross-sectional view of the portable water wheel arrangement.    Fixed portable and middle-shot water wheel arrangement (1)    Horizontal axis water wheel (2)    Inclined converging penstock (3)    Low head dam (4)    Cylindrical drum (22)    Portable rectangular fronted straight blades (23)    Bell mouth shaped inlet (31)    Converging outlet end (31')