Census boundary evidence
Trochu vl (T33 R23 MW4) — 1911 census geography (AB)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- AB005021_1911
- Source boundary identifier
- AB005021
- Census vintage
- 1911
- Source label
- Trochu vl (T33 R23 MW4)
- Province code
- AB
- District label
- Red Deer
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Trochu vl (T33 R23 MW4)
TCP UID: AB005021
Census source records
Each link states the assessment that connected the source row to this map. Name candidates remain candidates; no source statistic is silently assigned to the map.
- Trochu vl (T33 R23 MW4) — 1911 · 1911_V1T1, row 1678 unique_contextual_name_candidate
- Trochu vl (T33 R23 MW4) — 1911 · 1911_V2T2, row 121 unique_contextual_name_candidate
Boundary intersections across censuses
These are computed polygon intersections in the equal-area CRS ESRI:102001. Fractions describe the area of the earlier and later polygons, respectively. They do not establish historical succession, and population has not been apportioned by area. All positive intersections are retained, including very small contributions.
| Other census representation | Years (earlier → later) | Overlap (m²) | Fraction of earlier area | Fraction of later area | Evidence |
|---|---|---|---|---|---|
| Rosebud · 1901 | 1901 → 1911 | 2650728.846060768 | 0.0011161135344209365 | 1.0 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| 308. Ghost Pine · 1921 | 1911 → 1921 | 0.1565027862298421 | 5.904141665128063e-08 | 1.7246371483993677e-10 | PARTIAL_OVERLAPHistorical succession verified: False |
| Trochu, VL · 1921 | 1911 → 1921 | 2650728.6895579295 | 0.9999999409585637 | 0.9999997903736687 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Trochu vl (T33 R23 MW4) (1911) → Trochu, VL (1921): name_change_requires_review