The search for ultra high energy muon neutrinos in the energy range from 100 PeV to 10 EeV from unresolved sources is presented. Neutrinos of energies greater than PeV are absorbed by the Earth, so the search for the astrophysical signal is restricted near the horizon. UHE events release a large amount of light and have a specific topology: a multidimensional analysis combining variables related to the energy and event shape has been used to discriminate signal from background. The different detector configurations from Dec. 2008 to Dec. 2011 are considered. Here the sensitivity for diffuse flux neutrinos is shown.