Waymire Edward C Waymire & Barndorff-nielsen Ole E Barndorff-nielsen 
Stochastic Methods In Hydrology: Rain, Landforms And Floods [PDF ebook] 

This book communicates some contemporary mathematical and statistical developments in river basin hydrology as they pertain to space-time rainfall, spatial landform and network structures and their role in understanding averages and fluctuations in the hydrologic water balance of river basins. While many of the mathematical and statistical nations have quite classical mathematical roots, the river basin data structure has led to many variations on the problems and theory.