Research on the potential of water resources utilization efficiency in the North Canal Basin to improve environmental flow guarantee degree

North Canal is one of the important tributaries of Haihe River, however, it can't meet the requirement of environmental flow. Improving water resources utilization efficiency is one significance way to enhance the environmental flow guarantee degree, Hence, it's significant to study the potential of improving water use efficiency of the North Canal Basin. Based on the Analytic Hierarchy Process, this paper comprehensively evaluates the water use efficiency of the North Canal Basin from 2016 to 2019, and analyses the water use efficiency improvement potential. The results show that the water use efficiency of the North Canal Basin is high compared to the national average level, and the water use efficiency of the basin is increasing from 2016 to 2019, and the comprehensive score of water use efficiency in 2019 is the highest at 0.927, and lowest in 2016 at 0.896. The water use efficiency of the North Canal Basin still has the potential to be improved, and with the promotion of ecological civilization construction in China, the environment water consumption in the North Canal Basin is increasing year by year, and the environmental flow guarantee degree of the North Canal Basin will be gradually improved.