The four Yahara River chain of lakes – Mendota, Monona, Waubesa, and Kegonsa – have experienced undesirable blue-green algal blooms fueled by excessive phosphorus (P) inputs for years. Analyzing over 30 years of highly variable P loading and in-lake data, NTL-LTER scientists developed P load reduction targets needed for improving water quality in the lakes. These reduction targets were based on lower P loads measured during a 2-year drought when water quality in all four lakes was substantially better.
This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-0822700, NTL LTER. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.