  We discuss a sample of over 3000 candidate RR Lyrae stars selected by various
methods using Sloan Digital Sky Survey data for about 1000 deg^2 of sky. These
stars probe the halo structure out to ~100 kpc from the Galactic center. Their
spatial and radial velocity distributions are very inhomogeneous, with the most
prominent features tracing the Sgr dwarf tidal stream. Outside the Sgr dwarf
tidal stream, the spatial distribution in the 5-60 kpc range of Galactocentric
radius R is well described by an R^{-3} power law.
