Census boundary evidence
Grosse Ile, Isle Bryon & Bird Rocks — 1891 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
- QC154011_1891
- Source boundary identifier
- QC154011
- Census vintage
- 1891
- Source label
- Grosse Ile, Isle Bryon & Bird Rocks
- Province code
- QC
- District label
- Gaspé
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Grosse Ile, Isle Bryon & Bird Rocks
TCP UID: QC154011
Census source records
No source row has a supported or candidate endpoint here in the current assessment. This does not mean the population was zero.
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 |
|---|---|---|---|---|---|
| Grosse Ile · 1881 | 1881 → 1891 | 66783441.30172002 | 1.0000000000000009 | 1.0000000000000009 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Grande Entrée · 1901 | 1891 → 1901 | 12154692.381922254 | 0.18200158819322804 | 0.9999999999999999 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Wolfe, Bryon Islands, Grosse Ile & Bird Rocks · 1901 | 1891 → 1901 | 54628748.91979778 | 0.8179984118067729 | 1.0000000000000013 | LATER_WITHIN_EARLIERHistorical succession verified: False |
Continuity assessments
- Grosse Ile (1881) → Grosse Ile, Isle Bryon & Bird Rocks (1891): name_change_requires_review