In the last stage in the Evolution of a Fishery Condition Assessment series, I discussed the importance of individual indicators for describing watershed and fishery condition as well as the qualities that make an indicator ecologically meaningful. Another important consideration in my project work is scale. For our assessment, we therefore have to consider at which scale or set of scales each indicator operates. Some indicators affect a watershed at the landscape level, while other indicators are only important in the immediate area of the stream. Some indicators may also have greater or less importance depending on the scale that you are considering. In my previous post, I used human-caused and natural effects on sediment regime to illustrate condition. Here I’ll continue to use that example to illustrate why a given indicator might need to be evaluated at different scales.