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We present event-by-event viscous hydrodynamic calculations of the anisotropic flow coefficients to for heavy-ion collisions at the Relativistic Heavy-Ion Collider (RHIC). We study the dependence of different flow harmonics on shear viscosity and the morphology of the initial state. and higher flow harmonics exhibit a particularly strong dependence on both the initial granularity and shear viscosity. We argue that a combined analysis of all available flow harmonics has the potential to determine of the quark gluon plasma more precisely than previously. Presented results strongly hint at a value at RHIC. Furthermore, we demonstrate the effect of shear viscosity on pseudorapidity spectra and the mean transverse momentum as a function of rapidity.