Census boundary evidence
Isle aux Grues — 1861 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
- QC035003_1861
- Source boundary identifier
- QC035003
- Census vintage
- 1861
- Source label
- Isle aux Grues
- Province code
- QC
- District label
- Montmagny
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Isle aux Grues
TCP UID: QC035003
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.
- Isle aux Grues — 1861 · 1861_V1T1, row 345 source_identifier_and_context_agree
- Isle aux Grues — 1861 · 1861_V1T5, row 345 source_identifier_and_context_agree
- Isle aux Grues — 1861 · 1861_V2T11, row 339 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 |
|---|---|---|---|---|---|
| Ile aux Grues · 1851 | 1851 → 1861 | 8315466.758472841 | 1.0000000000000002 | 1.0 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Isle aux Grues · 1871 | 1861 → 1871 | 8315466.758472842 | 1.0000000000000002 | 0.28632394422492935 | EARLIER_WITHIN_LATERHistorical succession verified: False |
Continuity assessments
- Ile aux Grues (1851) → Isle aux Grues (1861): name_change_requires_review