Intro; Preface; Acknowledgements; About the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018; About the Conference Steering Committee; Contents; About the Editors; Keynote; 1 Innovation in Process Engineering for Hydrology; Abstract; 1 Introduction; 2 Membrane Operations for Water Desalination; 3 Membrane Operations for Wastewater Treatment and Reuse; 4 Conclusions; References; Hydrology, Climatology and Water-Related Ecosystems; 2 A Comparative Assessment of Meteorological Drought Indices for the Baribo Basin (Cambodia); Abstract; 1 Introduction; 2 Methods

3 Results3.1 Drought Severity Distribution; 3.2 Correlation and Drought Event Analysis; 4 Discussion; 5 Conclusions; References; 3 Probabilistic Precipitation Forecast in (Indonesia) Using NMME Models: Case Study on Dry Climate Region; Abstract; 1 Introduction; 2 Methods and Materials; 3 Results; 4 Discussion; 5 Conclusions; References; 4 Homogeneity and Trend Analysis of Rainfall and Streamflow of Seyhan Basin (Turkey); Abstract; 1 Introduction; 2 Materials and Methods; 3 Results; 4 Conclusions; References

5 Mean Rainfall Variability Effects on the Hydrological Response of Medjerda High Valley (Tunisia)Abstract; 1 Introduction; 2 Materials and Methods; 3 Results; 3.1 Mean Rainfall Variation; 3.2 Hydrologic Response Modeling; 4 Discussion; 5 Conclusions; References; 6 Information Gain in Rainfall-Runoff Modeling (Tunisia); Abstract; 1 Introduction; 2 Methodology; 2.1 The Hydrological Model; 2.2 Calibration Criteria; 2.3 Information Gain; 3 Results; 3.1 Data of the Case Study; 3.2 Calibration Results; 3.3 Validation Results; 4 Final Remarks; References

7 Hydrogeological System of Sebaou River Watershed (Northern Central Algeria): An Assessment of Rainfall-Runoff RelationshipAbstract; 1 Introduction; 2 Materials and Methods; 2.1 Study Area and Database; 2.2 Cross Wavelet (XWT) and Wavelet Coherence Transform (WCT); 3 Results; 3.1 Rainfall-Runoff Analysis Using XWT and WCT; 3.2 Impacts of Human Activities; 4 Conclusions; References; 8 New Use of Hydrograph Separation Method for Hydrological Process Identification; Abstract; 1 Introduction; 2 Methods; 3 Results; 4 Discussion; 5 Conclusions; References

9 Modeling Processes of Water and Heat Regime Formation for Agricultural Region Area (Russia) Utilizing Satellite DataAbstract; 1 Introduction; 2 Materials and Methods; 3 Results; 4 Discussion; 5 Final Remarks; Acknowledgements; References; 10 Warm Season Trends of ETa: A Case Study of Near-North Caspian Low Lands; Abstract; 1 Introduction; 2 Materials and Methods; 3 Results; 4 Discussion; 5 Conclusions; Acknowledgements; References; 11 Development of Frequency Specific Flow Maps on the Sebaou Watershed in Great Kabylia in Algeria; Abstract; 1 Introduction; 2 Presentation of the Study Area