OSM coverage gaps over time
How many City of Guelph parks are still missing from
OpenStreetMap, mapped under a different name, or mapped as an
unnamed area — one point per weekly comparison, so a
mapper can see the worklist shrink. Since 2026-10-24 it also counts the park
amenities the City lists and OSM lacks: permanent restrooms, splash pads,
disc golf courses and parking lots without a capacity. Click a
legend entry to show or hide its line.
Every comparison
| Date | Missing | Mismatch | Unnamed | Placeholder | City polygons | OSM areas | No capacity | Splash pad | Disc golf | Restroom | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-11-04 | 13 | 7 | 2 | 1 | 126 | 280 | 23 | 2 | 2 | 3 | live |
| 2026-10-27 | 13 | 7 | 2 | 1 | 126 | 280 | 23 | 2 | 2 | 3 | live |
| 2026-10-24 | 13 | 7 | 2 | 1 | 126 | 280 | 23 | 2 | 2 | 3 | live |
| 2026-10-20 | 13 | 7 | 2 | 1 | 126 | 280 | – | – | – | – | live |
| 2026-10-13 | 13 | 7 | 2 | 1 | 126 | 280 | – | – | – | – | live |
| 2026-10-06 | 13 | 7 | 2 | 1 | 126 | 280 | – | – | – | – | live |
| 2026-09-28 | 13 | 7 | 3 | 1 | 126 | 280 | – | – | – | – | reconstructed |
| 2026-09-21 | 13 | 7 | 3 | 1 | 126 | 279 | – | – | – | – | reconstructed |
| 2026-09-14 | 15 | 7 | 3 | 1 | 126 | 277 | – | – | – | – | reconstructed |
| 2026-09-07 | 15 | 7 | 3 | 1 | 126 | 277 | – | – | – | – | reconstructed |
| 2026-08-31 | 15 | 7 | 3 | 1 | 126 | 277 | – | – | – | – | reconstructed |
| 2026-08-24 | 15 | 7 | 3 | 1 | 126 | 277 | – | – | – | – | reconstructed |
| 2026-08-17 | 15 | 7 | 3 | 1 | 126 | 278 | – | – | – | – | reconstructed |
| 2026-08-10 | 15 | 7 | 3 | 1 | 126 | 277 | – | – | – | – | reconstructed |
| 2026-08-03 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-07-27 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-07-20 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-07-13 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-07-06 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-06-29 | 15 | 7 | 3 | 1 | 126 | 276 | – | – | – | – | reconstructed |
| 2026-06-22 | 15 | 7 | 3 | 1 | 126 | 275 | – | – | – | – | reconstructed |
| 2026-06-15 | 15 | 7 | 3 | 1 | 126 | 275 | – | – | – | – | reconstructed |
| 2026-06-08 | 15 | 7 | 3 | 1 | 126 | 275 | – | – | – | – | reconstructed |
| 2026-06-01 | 15 | 7 | 3 | 1 | 126 | 275 | – | – | – | – | reconstructed |