The difference between north and south is mainly due to the heavy precipitation in the south and the great influence of water flow on bank protection; However, there is little precipitation in the north, which has little impact on the revetment. Therefore, the revetment built in the south is more conducive to drainage and resistance to the impact of water waves than the northern revetment. ,

The south bank protection faces large water bodies, water bodies with large wind and waves and large water level changes, and garden water bodies with basically regular layout. The integral form of straight revetment is often adopted, and the bank wall is built with stone, brick or concrete, which requires firmness and stability during construction. Piling or sinking firewood rafts are often used as measures to strengthen the foundation of revetment. Choose a solid boulder as a block, or use a lime soil layer with a widened cross section as a foundation to build a revetment on it. In addition, the influence of seepage should be considered in the design of revetment, and drainage holes should be designed in the middle of revetment to avoid the revetment collapse caused by the rise of groundwater level during continuous rainfall.

Northern revetment usually faces a small part of small water bodies and large water bodies, as well as water bodies with stable water levels in natural gardens. Natural rock slope protection or vegetation gentle slope protection is often used. Natural rock revetment has relatively less strict requirements on revetment structure and materials, and can be made into diagenetic, rock, cliff, cape and other shapes, and take the form of extending upwards and contracting downwards and hanging horizontally. Moreover, because of the low groundwater level in the north, it is difficult to have continuous rainstorm, and there is basically no need to design drainage holes on the revetment, even if there are few.