A tangle of stellar streams in the north Galactic cap
  Stellar halo substructures were identified using statistical photometric
parallax of blue main sequence turnoff stars from fourteen Sloan Digital Sky
Survey stripes in the north Galactic cap. Four structures are consistent with
previous measurements of the Sagittarius dwarf tidal stream: the leading tail,
the "bifurcated" stream, the trailing tail, and Stream C. The stellar
overdensity in Virgo, about 15 kpc from the Sun, could arise from the crossing
of the Parallel Stream and a new, candidate stream dubbed the Perpendicular
Stream. The data suggests the presence of a wide stream near NGC 5466, with a
distance of 5 to 15 kpc. Measurements of the flattening of the smooth stellar
halo from the fourteen stripes average q=0.58, with a dispersion of 0.04.
