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2026-02-24 MeshCore Region Hierarchy

MeshCore Region Hierarchy: Pacific Northwest Watersheds

MeshCore mesh network regions organized by Salmon Nation bioregion and USGS watershed boundaries (HUC codes). Watersheds are usually similar to natural radio propagation areas. When you consider the shape of the land, you need fewer repeaters to cover the area.

Region Structure

salmon-nation F               # Pacific salmon watersheds
  cascadia F                  # Urban corridor (Vancouver-Seattle-Portland)
    columbia-river-basin F    # HUC Region 17
      
      lower-columbia F        # HUC 1708
      
      willamette-basin F      # HUC 1709
        
        lower-willamette F    # HUC 170900
          columbia-slough F   # HUC 17090012
          johnson-creek F     # HUC 17090011
          tualatin-basin F    # HUC 17090010
            fanno-creek F.    # Tigard Beaverton
        middle-willamette F
        upper-willamette F

Naming Rules

Large watersheds: Include "river"
Example: columbia-river-basin

Mid-sized basins:

Example: willamette-basin

Creeks: Include type

Examples: johnson-creek, fanno-creek

Marine regions: Use geographic descriptor
Example: puget-sound

Geographic Scope

Columbia River Basin: 259,000 sq mi
Covers Portland Metro, Willamette Valley, Eastern OR/WA

Cascadia: Vancouver BC – Seattle – Portland corridor (~534,000 km²)

Salmon Nation: Alaska to Northern California (~2.3 million km²)

Potential Deployment Plan

Phase 1: Portland area
columbia-river-basin → willamette-basin → lower-willamette

Phase 2: Cascadia expansion (add Vancouver / Seattle)

Phase 3: Full Salmon Nation coverage

Notes

The F flag enables flood/broadcast capability for each region.