The Willowemoc is 27 miles (43 km) long, and flows almost directly west from a few miles just due north of the hamlet of Willowemoc, through Livingston Manor to Roscoe, where it joins the Beaver Kill at the famous Junction Pool. It has many tributaries that flow into it from both the north and south. Going east to west, from the source to the outlet at the Beaver Kill they are: Butternut Brook and Fir Brook; Fall Brook (at Willowemoc), Hunter Brook (from Hunter Lake), Mongaup Creek (at Debruce), Little Beaver Kill and Cattail Brook (at Livingston Manor), Bascom Brook, then Hazel Brook and Stewart Brook, just east of Roscoe.
Large sections of the Willowemoc are open to public fishing and it is an especially popular and picturesque fly fishing stream. The Catskill Fly Fishing Center and Museum is on the Willowemoc, not far from Livingston Manor, on old Route 17. Brown trout are stocked from the Catskill Mountain Fish Hatchery located a few miles north of Debruce. Brook trout thrive in the upper reaches of the stream. Rainbow trout do not fare as well. The lower part of the Creek, between Livingston Manor and Roscoe, is paralleled by New York State Route 17, from which exceptional views of the Catskill Mountains can be seen. This part of the Willowemoc becomes 40 to 100 feet wide, with many pools three to five feet deep. The opening day for trout fishing is April 1.
The creek has been spelled many ways over the years: Weelewaughmack, Weelewaughwemack, Willikwernock, Willerwhemack, Willowwemoc, Williwemock, and so on. Fishermen sometimes just call it the Willow.
- Francis, Austin M. , Catskill Rivers: Birthplace of American Fly Fishing, Nick Lyons Press (1983) ISBN 0-8329-0282-9 Ch. 9.
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011