# Post-flood measured DSM — 500 m web package

Generated from the measured GeoPera v1.1 DSM for an exact 500 m planar radius around the approximate public station reference. This package contains no gap-filled surface and no historical fallback elevations.

- Native grid spacing: 0.5 m (not an accuracy claim)
- Reported stable-ground agreement: approximately 1.5 m
- Measured coverage: 83.4476% of sampled posts inside the circle
- Approximate station reference measured: no — NoData is preserved
- Vertical datum: EGM2008 orthometric height
- Maximum web-tile quantization error: 0.01 m

The browser uses screen-space levels of detail from 8 m to the native 0.5 m posts. All-NoData tiles are omitted. Hillshade is a rendering of the same measured surface, not a separate dataset.