Could gauge station data be interpolated over the watershed?

Discussion created by synaps on Sep 25, 2013
Latest reply on Sep 25, 2013 by synaps
I don`t know if I`m making the right decision trying to interpolate this type of data? Thiessen polygons shown for better description (picture in the attachment).
My main watershed was divided into gauge contributing areas. The data describes flood end date on tributaries and also on a main river (that flows from North). I have also flood start and flood duration data.

I haven`t googled any helpful information about interpolation techniques for gauge data over a waterheds, especially when there is an objective lack of data.

Thank`s in advice.