Forcast of Water Requirement of Shaanxi Province in 2020

This research predicts the water requirement of Shaanxi Povince with several kinds of maths models and classification water duty method.Results showed that one-dimensional linear regression model and grey system model did not work very good,and BP neural network and classification water duty method owned the virtue of good precision and can be used to forecast of water requirement for Shaanxi Province.The results of water requirement forecasting could provide support for decisionmaking and digital foundation for logical water resources allocation.