  We have developed a geometrical method based on 3D Voronoi polyhedra and
Delaunay tessellation for identifying and reconstructing clusters of galaxies
in the next generation of deep, flux-limited redshift surveys. We here describe
this algorithm and tests of it using mock catalogs that simulate the
DEEP2/DEIMOS redshift survey, which will begin observations in the Spring of
2002 and will provide a detailed three dimensional map of the large scale
structure up to redshift 1.5.
