The Multi-scale Resource Integration Tool (MRIT) was developed as an extension of ArcMap to facilitate the integration and summarization of spatial data. Simply put, MRIT characterizes the composition of feature layers (i.e., spatial themes added to an ArcMap document) within user-defined reporting units (e.g., landscapes). MRIT then classifies those reporting units according to their relative status. MRIT also has the capability to integrate the composition of multiple spatial themes (e.g., aquatic data and fire data). In this manner, users can easily conduct integrated assessments across multiple scales.