This study focuses on the properties of diamagnetic fluid in static magnetic fields up to 8 T with a gradient of 100 T/m. Using a horizontal type of superconducting magnet with a bore 100 mm in diameter and 700 mm long, we observed a phenomenon in which the surface of water was pushed back by magnetic fields of high gradients. Two “frozen” cascades were formed at z = ±50-80 mm; the surface of the water near the center of the magnet was parted, and the bottom of the water chamber was exposed, while the water level at both ends of the chamher was raised. The change in the lowest level of water was 22 mm when the magnetic fields were changed from 0 T to 8 T, and the decrease in water level was proportionate to B2 at the center of the magnet. We also investigated the effect of temperature on the formation of the water-wall, and observed that the water-wall was formed at both 0°C and 100°C.