Before revision: The characteristics of the plain nival (example: Simme at Oberwi) are: Short and violent flood in April–May following massive spring thawing ofwinter snows Great daily variability Very great variability over the course of the year Great inter-annual variability Significant flow Pluvial Pluvial-oceanic regime of the Béthune (France) The pluvial regime is characterized by: high water in winter and spring low discharge in summer great inter-annual variability flow is generally rather weak It is typical of rivers at low to moderate altitude ().
After revision: The characteristics of the plain nival (example: Simme at Oberwi) are: Short and violent flood in April–May following massive spring thawing of winter snows Great daily variability Very great variability over the course of the year Great inter-annual variability Significant flow Pluvial Pluvial-oceanic regime of the Béthune (France) The pluvial regime is characterized by: high water in winter and spring low discharge in summer great inter-annual variability flow is generally rather weak It is typical of rivers at low to moderate altitude ().