Ellicott Creek originates from headwater wetlands in the Town of Darien in southwestern Genesee County, flowing northwest for approximately 30 miles through Erie County before joining Tonawanda Creek in the City of Tonawanda, roughly half a mile above its confluence with the Niagara River. The creek passes through increasingly developed landscapes as it travels downstream, with its upper reaches remaining relatively undeveloped while the lower sections flow through the residential and commercial areas of Lancaster, Amherst, and Tonawanda.

The creek's paddling opportunities center around three distinct sections, all offering flatwater experiences suitable for beginners and recreational paddlers. The upper section from Glen Falls to Williamsville provides a more rural setting before reaching developed areas. The most popular paddling begins at Ellicott Creek Park, where a seasonal kayak launch at the corner of Niagara Falls Boulevard and Ellicott Creek Road serves as the primary access point. From here, paddlers follow the creek westward as it meanders alongside Ellicott Creek Road, passing through wooded parkland on one side while paralleling roadways on the other. The journey continues past numerous marinas, private boat docks, and houses with rear boat garages built directly into the creek, many now in disrepair. The route connects to the Erie Canal near Gateway Harbor in North Tonawanda after approximately 3 miles.

Eastern Park at 280 Fillmore Avenue in Tonawanda provides another launch option with a car-top access and sloped dock, along with water and restrooms. This location serves paddlers exploring the creek's connection to the Erie Canal system. All sections require no portages and present no significant challenges beyond basic paddling skills.

The creek supports abundant wildlife including ducks, geese, turtles, muskrats, white-tailed deer, raccoons, foxes, and various waterfowl species such as hawks and woodpeckers. Fish populations include bluegills, northern pike, bass, bullheads, carp, muskies, and trout. Riparian vegetation features willow trees, sugar and silver maples, beech, red oak, and Eastern hemlock, with extensive moss, lichen, and fern communities.

Ellicott Creek Park, established in 1926 and expanded through land acquisitions and tax foreclosures in the 1930s, contains WPA-constructed facilities including a historic boathouse and concession stand from 1939. Ellicott Island, also known as the "island at three mile bend," was constructed to improve navigability when the Erie Canal was enlarged in 1918. The creek's connection to the Erie Canal system played a significant role in Tonawanda's development as a major lumber port by 1890.

Paddlers should be aware of potential water quality concerns and check for aquatic alerts before launching. The sheltered nature of the creek makes it well-suited for windy days when other regional waterways become challenging.