River Tweed Border Avulsion Simulator
Leaflet Geography Sandbox
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Cartographic Legend
Active River Channel (Thalweg)
International Sovereign Border
Abandoned Oxbow Channel
Enclave / Disputed Parcel
Historical Boundary Preset
River Tweed (Scotland / England Anomaly)
Rio Grande (Chamizal Dispute - US / Mexico)
Mississippi River (Kaskaskia, Illinois Enclave)
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Hydrologic Dynamics
Flow Velocity (m/s)
2.4 m/s
Sediment Erosion Rate
0.04
Meander Loop Tightness
0.85
Simulation Timeframe
50 Years
Border Law Doctrine
Avulsion Rule: Cutoff preserves fixed historic border
Accretion Rule: Border dynamically shifts with new thalweg
Border Telemetry Proof
Cutoff Triggered
Yes
Thalweg Shift
310 m
Isolated Area
14.2 ha
Border Δ Length
-0.85 km
Jurisdiction State:
Enclave Created (Scottish land retained on South bank of new channel)
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