1. INTRODUCTION

2. DATA ACQUISITION AND REDUCTION
2.1. Observations
2.2. Reduction and Photometry
2.3. Color-Magnitude Diagram
2.4. NB515 and 2-Color Diagram

3. ANALYSIS

4. RESULTS
4.1. Spatial Distribution of Resolved Stars
4.2. Stellar Population of RGB, RC, and RGB bump
4.3. Summary of Distance Estimates of Stellar Populations
4.4. 3D Structure of the M31 NW Stream

5. DISCUSSION
5.1. Properties of Globular Clusters on the NW Stream
5.2. Comparison with Simulation
5.3. Diffuse Substructure

6. CONCLUSIONS