Quick Answer
To choose the right crossing point on a map, look for a shallow and narrow section of the river, ideally with a natural crossing point such as a shallow bar or a ford. Use contour lines and elevation data to gauge the river's depth and obstacles. Consider the surrounding terrain and any potential hazards.
Identifying Safe Crossing Points
When searching for a safe crossing point on a map, focus on areas with shallow water and minimal obstacles. Use the 1:24,000 scale topographic map to identify contour lines that indicate the river’s depth. Look for areas with contour lines spaced 10-20 feet apart, which typically indicate shallow water. Also, check for any natural crossing points such as shallow bars, fords, or sandbars.
Analyzing River Features
River features such as bends, meanders, and oxbow lakes can indicate the presence of shallow water and safe crossing points. Use the map to identify these features and look for areas with slower water flow. Avoid areas with fast-moving water, strong currents, or submerged obstacles such as rocks or logs. Also, be aware of any potential hazards such as rapids, waterfalls, or shallow holes.
Consideration of Surrounding Terrain
When choosing a crossing point, consider the surrounding terrain and any potential hazards such as steep banks, loose soil, or unstable ground. Use the map to identify any obstacles or hazards that may affect the crossing point or route. Consider the time of day, weather conditions, and water levels to ensure a safe and successful crossing.
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