Census boundary evidence
Calumet Island — 1911 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
- QC185007_1911
- Source boundary identifier
- QC185007
- Census vintage
- 1911
- Source label
- Calumet Island
- Province code
- QC
- District label
- Pontiac
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Calumet Island
TCP UID: QC185007
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.
- Calumet Island — 1911 · 1911_V1T1, row 6460 unique_contextual_name_candidate
- Calumet Island — 1911 · 1911_V1T2, row 6408 unique_contextual_name_candidate
- Calumet Island — 1911 · 1911_V2T2, row 3050 unique_contextual_name_candidate
- Calumet Island — 1911 · 1911_V2T7, row 3048 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 |
|---|---|---|---|---|---|
| Calumet Island · 1901 | 1901 → 1911 | 128918717.64160353 | 0.999999963210921 | 0.9999999660327362 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Calumet Island—Ile · 1921 | 1911 → 1921 | 128918717.41067241 | 0.9999999642414439 | 0.99999996356266 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Calumet Island (1901) → Calumet Island (1911): supported_spatial_name_continuity
- Calumet Island (1911) → Calumet Island—Ile (1921): name_change_requires_review