(1) Hanjiang River belongs to subtropical monsoon climate zone, with concentrated rainfall, large basin area and wide catchment area. There are many tributaries, many confluence and large amount of water; The terrain is flat, the terrain is low, the river is curved, the water flow is slow, the sediment is deposited, the riverbed is raised, and the embankment is artificially built to control the water, and some river sections become semi-above-ground rivers; During the flood season, it is often supported by the Yangtze River flood, which often breaks its banks and causes disasters.

(2) The main measures for harnessing the Hanjiang River in the picture are: Danjiangkou Water Control Project has been built in the main stream, and a large number of reservoirs have been built in the tributaries, and the levees have been strengthened in coordination with the Dujiatai flood diversion area.

So the answer is:

(1) The rainfall in the Hanjiang River Basin is concentrated, with many tributaries and large amount of water. The upstream carries a large amount of sediment into the middle and lower reaches of the plain, and the water flow is slow and silted, which raises the river bed and bends the river course. During the flood season, it is supported by the Yangtze River flood, and the flood discharge is not smooth, and the dam often breaks (the catchment is large and the water level is high, and the water flow is not smooth in a short time).

(2) Measures: Danjiangkou Water Control Project was built in the main stream, and a large number of reservoirs were built in the tributaries to cooperate with the Dujiatai flood diversion area, which basically alleviated the flood threat in the lower reaches of the Han River.