How Many Animals are in the U.S. and Maryland Nutria Populations?
In Louisiana, the population of nutria has risen from a few pairs of animals to an estimated 20 to 30 million animals. The population of nutria at Blackwater National Wildlife Refuge was about 7,000 animals before. The Dorchester County population has been estimated to be as high as 75,000 animals. The larger the population of nutria, the greater their impact on marsh habitat.
