Census boundary evidence
Groupe Sud — 1871 census geography (QC)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- QC173001_1871
- Source boundary identifier
- QC173001
- Census vintage
- 1871
- Source label
- Groupe Sud
- Province code
- QC
- District label
- Isles de la Magdeleine
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Groupe Sud
TCP UID: QC173001
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.
- Groupe Sud — 1871 · 1871_V1T1, row 1305 source_identifier_and_context_agree
- Groupe Sud — 1871 · 1871_V3T23, row 1305 source_identifier_and_context_agree
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 |
|---|---|---|---|---|---|
| Magdalen Islands · 1861 | 1861 → 1871 | 85925427.58671817 | 0.35300192970380323 | 1.0 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Hâvre Amherst · 1881 | 1871 → 1881 | 85925427.58671822 | 1.0000000000000004 | 1.0000000000000004 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Groupe Sud (1871) → Hâvre Amherst (1881): name_change_requires_review