What does a green buoy signal when facing upstream?

When facing upstream, a green buoy serves as a lateral marker, indicating the right side of the channel when navigating from the open water toward the shore. These markers are part of the uniform state waterway marking system and are used to help boaters safely navigate through waterways.

The green color signifies that you are on the correct side of the navigable channel, and it assists in marking the safe passage for vessels. By recognizing this buoy, boaters can follow the designated routes while avoiding hazards or shallow areas that may exist on the opposite side, thus leading to safer navigation in potentially challenging environments.