<P> The Pecatonica River is a tributary of the Rock River, 194 miles (312 km) long, in southern Wisconsin and northern Illinois in the United States . </P> <P> The word Pecatonica is an anglicization of two Algonquian language words: Bekaa (or Pekaa in some dialects), which means "slow", and niba, which means "water", forming the conjunction Bekaaniba or "Slow Water". </P> <P> It rises in the hills of southwest Wisconsin, in southwest Iowa County, 2 miles (3 km) west of Cobb . It flows south, then southeast, past Calamine and Darlington . In southeast Lafayette County it receives the East Branch Pecatonica River, approximately 8 miles (13 km) north of the state line . It flows south - southeast into Illinois, past Freeport, where it turns east, then east - northeast, receiving the Sugar River near Shirland in northern Winnebago County, 5 miles (8 km) south of the state line . It joins the Rock at Rockton, approximately 15 miles (24 km) north of Rockford . </P> <P> The Winnebago County Forest Preserve District owns and operates six preserve along the river in Winnebago County . The river is the chief attraction of the 1,048 - acre (424 ha) Pecatonica Wetlands Forest Preserve and the 221 - acre (89 ha) Crooked River Forest Preserve off U.S. Highway 20 near Pecatonica, Illinois . These forest preserves contain oxbow, wetlands, and bottomland forest . The river also flows past the 466 - acre (189 ha) Pecatonica River Forest Preserve off Illinois Route 70 near Pecatonica . The forest preserve contains a bottomland forest and has been designated an Illinois Nature Preserve . The 15 - acre (6.1 ha) Trask Bridge Forest Preserve and the 6 - acre (2.4 ha) Two Rivers Forest Preserve at the confluence of the Sugar River and Pecatonica River provide public boat launches, picnic areas, and fishing opportunities . At the mouth of the Pecatonica is the 281 - acre (114 ha) Macktown Forest Preserve on Illinois Route 75 near Rockton, the site of the ghost town of Macktown or Pe - Katonic . </P>

Where does the pecatonica river start and end
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