Description
Freeze and thaw dates for 86 lakes, recorded by volunteers and later entered by hand.
Provenance
Bought as part of a box of disks at an estate sale and donated anonymously. The tape was sticky with binder breakdown and was baked at low temperature before a single careful read. All files were recovered; 6 damaged sectors were rebuilt from redundant data.
Preservation
- Fixity (SHA-256)
b4a80c026e1b14357c6efd3374de630b537435b8ac4ce18adb06a5edab9fcf3f- Last verified
- Aug 23, 2026, by Vigil
- Migrated to
- CSV with a data dictionary, with the original files kept
- Copies
- Three, on two kinds of storage, in two cities
- Original carriers
- Kept in cold storage in Vancouver
Access
Free, in the Lazarus reading room in Vancouver and in partner reading rooms.
Reading-room copies are migrated to CSV with a data dictionary, with the original files kept. The recovered files are kept exactly as they were found.
Cite as: Northshore Lakes Survey, Lake ice records, Northshore, 2001–2009 (2001–2009). Lazarus Archive, LZ-12133.