While monitoring may sometimes seem straight-forward, the actual measurements are complex and difficult to standardize.
For example, a key measure of salmon recovery involves counting how many salmon return from the ocean to their native rivers. There are many different methods and computer systems used to count fish, there are six species and many different "runs" of salmon, there are complications from changing weather conditions, and there are normal variations in salmon numbers, all making the process of standardizing counts, reliably estimating abundance, and detecting long-term trends difficult.
The first step in solving this problem was the development in 2001-2002 of "The Washington Comprehensive Monitoring Strategy and Action Plan for Watershed Health and Salmon Recovery." This strategy provides the foundation for coordinating, prioritizing, and standardizing the myriad of monitoring programs and needs across the state.