In what capacities are surface water quality models important and useful tools for water management?

As a water quality analyst, you will need to take what you see in the field and in the lab and produce water quality models. These models help communities better understand water quality, how it changes, and what might influence those changes. These models can help inform protective measures to ensure that water quality meets standards, so it is a particularly important component of the position. When answering this question, consider offering at least 3 different capacities in which water quality models are important and useful.