Lack of good scientific information is one of the challenges that must be overcome in order to successfully manage commercial fishing in the United States. To address the issue, the Lenfest Ocean Program has created the first comprehensive guide for setting annual catch limits for all fish populations. The report, Setting Annual Catch Limits for U.S. Fisheries: An Expert Working Group Report (42 pages, PDF), recommends that fishery managers take into account the vulnerability of specific fish populations to fishing, the scientific uncertainty regarding the estimates of population size, and the effectiveness of management to control and monitor populations. The program was established by the Lenfest Foundation and is managed by the Pew Environment Group, the conservation arm of the Pew Charitable Trusts.