Census boundary evidence
Notre-Dame du Portage — 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
- QC054005_1861
- Source boundary identifier
- QC054005
- Census vintage
- 1861
- Source label
- Notre-Dame du Portage
- Province code
- QC
- District label
- Temiscouata
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Notre-Dame du Portage
TCP UID: QC054005
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.
- Notre-Dame du Portage — 1861 · 1861_V1T1, row 558 source_identifier_and_context_agree
- Notre-Dame du Portage — 1861 · 1861_V1T5, row 558 source_identifier_and_context_agree
- Notre-Dame du Portage — 1861 · 1861_V2T11, row 543 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 |
|---|---|---|---|---|---|
| St. André · 1851 | 1851 → 1861 | 3281327.448525237 | 0.031107664273042 | 0.11268341825611379 | PARTIAL_OVERLAPHistorical succession verified: False |
| Rivière du Loup · 1851 | 1851 → 1861 | 25838551.001918603 | 0.31702310954045265 | 0.8873165800596048 | PARTIAL_OVERLAPHistorical succession verified: False |
| St. Alexandre · 1851 | 1851 → 1861 | 0.04904612638675201 | 4.016038539116146e-10 | 1.6842833457430512e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Notre Dame du Portage · 1871 | 1861 → 1871 | 29119878.49948992 | 1.0000000000000002 | 1.0000000000000002 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Notre-Dame du Portage (1861) → Notre Dame du Portage (1871): supported_spatial_name_continuity
Area separations
| Earlier area | Continuing area | Separate area | Retained fraction | Separated fraction | Comparison status |
|---|---|---|---|---|---|
| St. André · 1851 | St. André · 1861 | Notre-Dame du Portage | 0.8219920600870362 | 0.031107664273042 | later_totals_require_geographic_reconciliation |