A hydro reservoir has much higher evaporation than if there was no reservoir. That’s usually a big part of the discussion when a downstream nation objects against another nation building a dam upstream from them.

Depending on the source, nuclear uses a bit more/a bit less water than coal. But they are in the same order of magnitude.

Image Source: visualizingenergy.org/what-methods-of-electricity…

Ps: biomass power generation is a crime against nature.