A decade-long assessment of nutrient impacts in US estuaries, conducted in 2007, revealed that 65% of assessed systems showed moderate to high levels of eutrophication. The mid-Atlantic region was the most affected, with nutrient inputs from human activities significantly influencing estuarine conditions. Conditions were predicted to worsen in 65% and improve in 19% of estuaries. Analysis of data from the early 1990s to early 2000s showed that most systems remained unchanged, though some improved or worsened. Chlorophyll a and harmful algal blooms (HABs) increased in the mid-Atlantic, particularly in systems with long residence times, such as coastal lagoons. The successful restoration of seagrass in Tampa Bay highlights the potential for recovery, but future management will be challenging due to expected population increases. The assessment method, called the National Estuarine Eutrophication Assessment (NEEA), evaluates influencing factors, overall eutrophic condition, and future outlook. It combines these components into a single rating based on data availability and reliability. The majority of estuaries had 'moderate' to 'high' eutrophic conditions, with the mid-Atlantic region showing the highest levels. Systems with 'low' to 'moderate low' conditions were mainly in the Gulf of Mexico and Pacific Coast regions. Changes since the 1990s showed that 32 of 58 systems remained the same, 13 improved, and 13 worsened. The future outlook predicted worsening conditions for 65% of estuaries and improvement for 20%. Systems with high susceptibility and expected nutrient increases were at greatest risk. The study emphasized the need for coordinated, integrated management, efficient monitoring, targeted research, and community engagement to address eutrophication. The results highlight the importance of considering local factors and the need for national and regional strategies to manage estuarine health.A decade-long assessment of nutrient impacts in US estuaries, conducted in 2007, revealed that 65% of assessed systems showed moderate to high levels of eutrophication. The mid-Atlantic region was the most affected, with nutrient inputs from human activities significantly influencing estuarine conditions. Conditions were predicted to worsen in 65% and improve in 19% of estuaries. Analysis of data from the early 1990s to early 2000s showed that most systems remained unchanged, though some improved or worsened. Chlorophyll a and harmful algal blooms (HABs) increased in the mid-Atlantic, particularly in systems with long residence times, such as coastal lagoons. The successful restoration of seagrass in Tampa Bay highlights the potential for recovery, but future management will be challenging due to expected population increases. The assessment method, called the National Estuarine Eutrophication Assessment (NEEA), evaluates influencing factors, overall eutrophic condition, and future outlook. It combines these components into a single rating based on data availability and reliability. The majority of estuaries had 'moderate' to 'high' eutrophic conditions, with the mid-Atlantic region showing the highest levels. Systems with 'low' to 'moderate low' conditions were mainly in the Gulf of Mexico and Pacific Coast regions. Changes since the 1990s showed that 32 of 58 systems remained the same, 13 improved, and 13 worsened. The future outlook predicted worsening conditions for 65% of estuaries and improvement for 20%. Systems with high susceptibility and expected nutrient increases were at greatest risk. The study emphasized the need for coordinated, integrated management, efficient monitoring, targeted research, and community engagement to address eutrophication. The results highlight the importance of considering local factors and the need for national and regional strategies to manage estuarine health.