: A "Citizen Historian" tool where users can upload scanned family maps or local archives to improve the accuracy of the stream paths. Technical Implementation
: Vector-based tiles for smooth zooming, with a "water-ink" aesthetic for the historical layers to distinguish them from modern blue-line maps.
The "Old Stream Map" serves as a high-fidelity hydrological time machine. Version 1.2 focuses on and AI-driven paleo-channel detection , allowing users to see where water used to flow before urban development or natural shifts. Core Components
: Uses LiDAR (Light Detection and Ranging) data to highlight depressions in the earth where streams once existed, even if they are now paved over or dry.
: A mobile-integrated view that allows users to point their phone at a dry valley or street corner to see a 3D simulation of the original water flow.
