Climate of the world, NAO, ENSO, precipitation process, different rain processes. Cold climate hydrology, snow and ice properties, snow distribution, snowmelt. Evapotranspiration, potential and actual evaporation and transpiration, different equations, relation evaporation and soil and vegetation conditions. Infiltration and percolation, pF-curves, soil water movement, irrigation. Hillslope hydrology, saturated and Hortonian overland flow, kinematic approach, particle movement, time-area method, reservoir theory, HBV-model, Beven’s model, time of concentration, ditch drainage, origin of stream water. Stream flow and lakes, water balance overflowing and terminal lakes, routing, regulation, flood control, mitigation of flooding, wetland hydrology. Extreme events, different extreme value distributions, partial series, the extreme of the extremes.