10,000 to >1,000,000 individuals
Comments: As of 2000, the estimated annual number of spawners in eastern North America was about 350,000, down from 1.5 million 30 years ago (Anderson et al. 2000). As of the late 1980s, New England population included about 3000-7000 adults returning to 16 rivers; of these, 1500-2500 were believed to be of wild origin. Prior to European colonization, Maine spawning runs may have been 125,000-500,000 (Beland 1984, cited by Clark et al. 1993). See Clark et al. (1993) and USFWS (1995) for information on current status in Maine.