This software release contains the code necessary to run the chronic wasting disease (CWD) and elk population models used to support the U.S. Fish and Wildlife Service decision on whether to continue to continue supplemental feeding of elk on the National Elk Refuge (NER). The models allow for five different management alternatives: continued feeding, reduced feeding, increased hunting, cwd threshold, and no feeding. The CWD model simulates elk population and disease dynamics over time and includes output data on the number of elk hunted over time. These results were used in other chapters to assess spatial and socioeconomic indicators as well.