  We consider dissipation of surface waves on fluids, with a view to its
effects on analogue gravity experiments. We begin by reviewing some general
properties of wave dissipation, before restricting our attention to surface
waves and the dissipative role played by viscosity there. Finally, with
particular focus on water, we consider several experimental setups inspired by
analogue gravity: the analogue Hawking effect, the black hole laser, the
analogue wormhole, and double bouncing at the wormhole entrance. Dissipative
effects are considered in each, and we give estimates for their optimized
experimental parameters.
