What do the colors on the contour map of South Sister (3157m) mean?

The contour map uses a hypsometric color scale where green represents lower elevations, yellow and orange indicate mid-range altitudes, and white marks the highest zones near the summit. Thicker contour lines (index contours) are drawn at wider intervals to help you quickly estimate elevation.

What is the contour interval for South Sister (3157m)?

The contour map of South Sister (3157m) uses a 50m contour interval. This means each line represents a 50m change in elevation. Closely spaced contours indicate steeper terrain, while widely spaced contours show gentler slopes.

What does the elevation profile of South Sister (3157m) show?

The elevation profile is a cross-section through South Sister (3157m) from west to east, passing through the summit at 3,157m. It reveals the mountain's shape, steepness, and relative height compared to the surrounding terrain. The horizontal axis shows distance in kilometers from the peak.

Why does South Sister (3157m) have a crater?

As a stratovolcano, South Sister (3157m) was built by alternating layers of lava and ash. The summit crater is visible on the contour map as a small depression within the tightly spaced concentric contours near the peak.

South Sister (3157m)

South Sister stands at 3157 meters in United States, part of the Cascade Range, North America. This peak is classified as a Stratovolcano.

Elevation

3157 m

Prominence

— m

Coordinates

44.103333, -121.769444

Type

stratovolcano

Elevation Comparison

Volcanic

About This Mountain

South Sister (3157m) is a stratovolcano in the Cascade Range, United States. Grade 2/5: moderate trek requiring good physical fitness. This stratovolcano rises steeply from the surrounding terrain with a classic conical profile.

Routes

South Ridge Standard (South Sister) 2

18.00 km · 8.0h

Seasonal Conditions

Topographic Analysis

Contour Map

The topographic contour map of South Sister (3157m) in the Cascade Range shows near-circular, closely spaced contours indicating steep conical slopes. Contour lines are drawn at 50m intervals, with index contours (thicker lines) every 250m. The hypsometric color scale ranges from green (lower elevations) through yellow and orange to white (highest elevations near the 3,157m summit).

Elevation Profile

The east–west elevation profile of South Sister (3157m) in the Cascade Range shows the terrain cross-section through the summit at 3,157m. The color gradient transitions from green (valley floor) to white (summit zone), with the red summit marker indicating the peak.