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Topographic map analysis of mountain pass drainage divides
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Description
Systematic identification and analysis of mountain passes crossing drainage divides using detailed topographic maps to reconstruct former drainage patterns and interpret geomorphological evolution. The method identifies low points along divides and interprets their formation through former water flow patterns.
Typical Equipment
- USGS National Map website detailed topographic maps
- spot elevation tool
- published pass floor elevations for verification
- detailed topographic maps for drainage pattern analysis
- topographic maps
- drainage divide analysis tools
Output Measurements
- pass locations
- floor elevations
- pass depths
- drainage connections
- flow directions