Why Does the Western United States Appear Drier on Google Maps than Apple Maps?

The Western United States may look drier on Google Maps compared to Apple Maps due to differences in how each platform renders satellite images and terrain. While Google Maps might use more recent or higher-contrast imagery emphasizing arid features, Apple Maps may have different imaging techniques or color adjustments that make the area appear less dry. This discrepancy is a reflection of subjective choices made by the mapping service providers, rather than a factual difference in the landscape.

Biases in Color Rendering

One key factor is the choice of color representation. Apple Maps seems to have decided that all land should have some kind of green color, regardless of aridity levels. Google, on the other hand, opted for a more natural representation, using a tan color to denote dry land. This deliberate choice reflects the mapping teams' preferences and the aesthetics they wish to convey to users.

Geographical Influences on Precipitation

The physical geography of the Western United States plays a significant role in the landscape appearance. The West Coast mountain ranges cause the air to rise, leading to precipitation, and thus, the famous California valleys and vineyards. Conversely, on the East Coast, there are no major barrier mountains, resulting in abundant, if not excessive, rainfall. This leads to a lush and verdant landscape with numerous small freshwater lakes and rivers.

Impact of Geography on Water Infrastructure

The geography of the Western United States influences its water infrastructure. The Rocky Mountains along the western half create a much drier climate. In contrast, the eastern half is watered by the Mississippi River and its various tributaries. The only major river of note in the western half is the Colorado River.

These hydrological factors contribute to a more arid environment in the western half, apart from a few fertile spots along the coastal areas. The abundance of water from the Mississippi River in the eastern United States ensures a more vibrant and lush landscape. This stark contrast in water availability explains why the same region might appear significantly drier on Google Maps compared to Apple Maps.

Final Thoughts

The differences between Google Maps and Apple Maps in representing the Western United States are primarily due to subjective choices related to imagery and color representation. These differences highlight the importance of understanding the subjective nature of geographical data and the varying perspectives of mapping service providers.