Lack of regulatory authority (including numerical nutrient standards) to require nutrient reduction.
Lack of coordination between local, state and federal programs, including implementation of regulatory programs such as TMDLs.
Lack of credible source loading information, especially for atmospheric deposition, nonpoint sources, and sediment flux.
When asked which elements of their management strategy were most difficult to develop and implement, the managers offered a wide variety of responses, including:
building trust among the management participants;
source identification, particularly atmospheric deposition;
nonpoint source controls, primarily due to lack of regulatory control on these sources;
agricultural community difficult to engage (several programs mentioned this element);
data on sediment flux and recycling;
scientific basis a time-consuming process; and
changing public attitudes about residential lawn maintenance.
When asked what could make their management strategy more effective, five of the 11 programs answering this question identified the need for additional or better information, and four identified additional funding. Several programs mentioned better cooperation between agencies.