Lake Geneva — Water balance
All known inflows and outflows of this lake with their current discharge — and the balance that results: is more water flowing in right now than out, or the other way round?
Live from 9 readings
Measured water balance
Updated 13 minutes ago
How to read the water balance: it is the difference between measured inflow and outflow, in cubic metres per second. A positive value means more water currently enters the lake than leaves it (it tends to rise), a negative value the opposite. It is a partial balance – not every tributary has a station, and rain on the lake surface, evaporation, groundwater and regulation are not fully captured. The balance therefore shows the tendency, not an exact volume calculation. The swimming-pool comparison only illustrates the order of magnitude.
Where does the water come from?
Where does it flow to?
Rain and inflow
How Rhône, Porte du Scex (Zufluss) responds to rainfall over the last 30 days.
- Rain
- Rhône, Porte du Scex (Zufluss)
How to read: the bars show daily precipitation in the catchment (mm, left axis), the line the largest measured tributary (right axis). This shows whether and how quickly the lake responds to rain – inflow usually follows precipitation with some delay.