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This paper explores whether the sponge city construction implemented in China can restore the hydrological condition of the river basins through runoff depth. The annual runoff depth was calculated based on the volume capture ratio of annual rainfall (VCRAR) and compared with undeveloped and before sponge city construction. The results conclude as follows: the current rainwater source control standard benefits the hydrology recovery in China. But the difference between before sponge city construction and undeveloped is large in 12.9% of the regions. The adjustment recommendations of the VCRAR proposed in this paper are favourable to restoring the river basin hydrology. [ABSTRACT FROM AUTHOR]

In order to better cope with water environmental problems as part of the whole world's climate change, much data are needed. As citizens are more concerned about the safety of the water environment, the role of citizen data in promoting the development of hydrology is a subject of attention. Hydrological data based on smartphones are expected to become a key research direction for new breakthroughs in hydrology. This paper explores the three functions of smartphones in the field of hydrology, summarizes the application advances of smartphones and puts forward the possible future development direction in China. [ABSTRACT FROM AUTHOR]

The central question this paper asks is: How can we understand the evolution of markets for water pollution allowances? To answer, we have conducted an in-depth study of the development of water pollution allowance markets in Jiaxing, China, which was one of the first cities to experiment with these markets. We have completed a longitudinal analysis and conclude that market design is a continual learning process, with adjustments to solve issues and to respond to external changes. [ABSTRACT FROM AUTHOR]

This article discusses the policy principles and strategy models for water resources projects around developing regions of the World Bank, the Asian Development Bank, African Development Bank, European Union, United States and Japan. To address conflicts and risks, they adapted different frameworks following a similar logic. A two-track sustainable model – value of isomorphism and order of symbiosis – is then identified, combining strategies of consistency, methodology diffusion, community participation and resource incentives. [ABSTRACT FROM AUTHOR]

The main hindrance to implementation of domestic sewage treatment plant-network integration in China is the separated assessment method. The assessment method of plant-network integration links payment for sewage treatment to incoming pollutants, and payment for maintenance of the pipe network to the concentration of pollutants in incoming water. It helps establish an interactive link between the city and district, and motivates operation and management stakeholder groups. The method contains index system formulation, target value determination, assessment payment plan specification and city-district payment proportion clarification. It provides a solution for the current drainage management by promoting plant-network integration. [ABSTRACT FROM AUTHOR]

In order to improve the application efficiency of intelligent monitoring equipment, leakage early warning system and water loss estimation methods under flow monitoring in different water supply areas are explored. Pressure monitoring provides risk alerts regarding unusual activity in the water distribution system in an effort to lessen or prevent catastrophic pipe bursting incidents. The location of leak points can be more accurately identified with the help of hydrophones or leak noise loggers. Furthermore, on the basis of the continuous improvement of hydraulic monitoring, a technical way to predict water quality changes through hydraulic monitoring is being developed. [ABSTRACT FROM AUTHOR]