Five quick questions. Don't know something? Pick "I'm not sure" and we'll use typical values.
France · Lake · fresh water · 4.9–11 m
Typical soil: silt, clay · indicative
Choose a known port, river, canal or lake — or describe your own location.
Opened from the map — depth 4.9–11 m and soil (silt, clay) are prefilled in the next steps. You can still change them.