Fig. 4. Watershed model estimates of controllable loads of nitrogen and phosphorus into the Chesapeake Bay for 1985 (the base year), 1996 (based on source reductions put in place), and 2000 (the targeted year for the 40% reduction goal). For 1996 and 2000 these are estimates adjusted to the average freshwater flow year and not estimates of nutrients that actually have been or will be delivered (Chesapeake Bay Program, 1997)