$ 0 0 Series: Phosphorus In Wisconsin's Land And WaterA Tribal-Farmer Collaboration Tests Strategies To Curb Phosphorus Runoff In Green BayStephanie HemphillMarch 4, 2019 | 1 p.m.Why exactly does Green Bay need saving? Because it suffers from too much phosphorus, which contributes to cyanobacteria, more commonly known as blue-green algae.