1. Introduction

2. The Data

2.1. An Overview of the SDSS Imaging and Stripe 82 Data

2.2. The Selection of RR Lyrae Stars

3. The ugriz RR Lyrae Templates

3.1. Construction of ugriz RR Lyrae Templates

3.2. A Comparison With Theoretical Template Light Curves

4. Outer Halo Substructure As Traced by Stripe 82 RR Lyrae Stars

4.1. Distance Estimates

4.2. Sample Completeness as a Function of Magnitude

4.3. Observed Spatial Distribution

4.4. Bayesian Number Density Maps

4.5. The Steepening of the Halo Density Profile

4.6. Period-Amplitude Distribution

4.7. Metallicity Estimates for RR Lyrae Stars

5. The Distribution of Main Sequence Stars in Stripe 82

5.1. The Metallicity of the Sgr dSph Tidal Stream (Trailing Arm)

6. Conclusions and Discussion