What factor typically determines whether visibility is good or poor?

The determination of visibility as good or poor is often influenced by what is considered normal for the area. This context is crucial because visibility can vary significantly based on local conditions, such as sediment levels, water temperature, and recent weather patterns. Each diving location can have its own unique characteristics, and divers need to be aware of these local norms to evaluate visibility accurately.

For instance, in certain areas, turbid waters may be a regular occurrence due to river runoff, while other regions may typically boast clear waters. Understanding the usual visibility conditions can help divers set realistic expectations for their dives and prepare accordingly. This local knowledge is essential not just for assessing visibility but also for planning safe and enjoyable dive experiences.

Other factors, while influential, do not always provide a consistent measure of visibility across different dive sites. Weather conditions can temporarily impact visibility but may not reflect the usual state of the area. The time of day may alter light levels but does not directly affect water clarity. Similarly, while the presence of aquatic life may momentarily obscure visibility, it is not a primary determinant of overall water clarity in a given location.