When Should You Use A Clinometer In The Backcountry?

Assessing Slope Steepness

A clinometer is a critical tool for backcountry travelers, particularly in mountainous terrain. To use a clinometer effectively, first identify a stable reference point, such as a rock outcropping or a tree. Then, hold the clinometer against the slope and take a reading. Aim to take multiple readings at different locations on the slope to get an accurate representation of the terrain. For example, if you’re assessing a slope with a potential avalanche path, take readings at the top, middle, and bottom of the slope to determine the average angle.

Determining Avalanche Terrain

When assessing potential avalanche terrain, it’s essential to use a clinometer to determine the angle of the slope. Most avalanches occur on slopes between 30° and 45°, with the majority occurring on slopes between 35° and 40°. If the slope is steeper than 45°, it’s considered a potential avalanche path. Use the clinometer to take readings at multiple locations on the slope and consider other factors, such as the terrain’s aspect, elevation, and recent snowfall.

Stabilizing Terrain Features

Clinometers can also be used to assess the stability of terrain features, such as scree slopes or talus fields. Take readings at different locations on the slope to determine the average angle. If the slope is too steep, it may be unstable and pose a risk to backcountry travelers. In this case, it’s best to avoid the terrain feature altogether. For example, if the slope is steeper than 60°, it’s considered unstable and should be avoided.