To compare hyporheic exchange characteristics and temperature field distributions of the riparian zone following dam release in different seasons,we monitored and analysed the water level and temperature of surface water and groundwater downstream of Xin' anjiang Dam using Darcy' s law. Results revealed that lateral exchange flux and river water level were in a counterclockwise rosetterelationship regardless winter or summer,and the exchange intensity was smaller away from the river. Hyporheic exchange inte...