# Precipitation

The volume of precipitation falling on the reservoir during a given day is calculated:

&#x20;        $$V_{pcp}=10*R_{day}*SA$$                                                          8:1.1.5

where $$V_{pcp}$$ is the volume of water added to the water body by precipitation during the day (m$$^3$$ H$$_2$$O), $$R_{day}$$ is the amount of precipitation falling on a given day (mm H$$_2$$O), and $$SA$$ is the surface area of the water body (ha).
