North Branch Kishwaukee River

North Branch Kishwaukee River
North Branch Kishwaukee River
Physical characteristics
Source
• location	McHenry County northeast of Harvard, Illinois
• coordinates	42°26′49″N 88°32′17″W / 42.4469444°N 88.5380556°W
• elevation	966 ft (294 m)
Mouth
• location	Confluence with the Kishwaukee east of Marengo, Illinois
• coordinates	42°15′57″N 88°33′04″W / 42.2658333°N 88.5511111°W
• elevation	810 ft (250 m)
Length	17 mi (27 km)
Basin features
Progression	North Branch Kishwaukee River → Kishwaukee → Rock → Mississippi → Gulf of Mexico
GNIS ID	414567

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The North Branch Kishwaukee River is a 17.1-mile-long (27.5 km)^[1] tributary of the Kishwaukee River in northern Illinois.^[2]^[3]

Course

The North Branch Kishwaukee River northeast of Harvard, Illinois and flows south through McHenry County.^[4] to join the Kishwaukee River east of Marengo.^[1] It drains approximately 40 square miles (100 km²) of land area,^[4] flowing for 17 miles.^[1]

Description

The North Branch Kishwaukee River flows in an east–west direction from its point of origin and has a generally unimpeded flow, save a dam at Belvidere, Illinois.^[5] The North Branch has an average width of 50 feet (15 m), but in Boone County the stream becomes both wider and deeper.^[5] Nearer its point of origin the North Branch has a substrate of gravel, the substrate becomes sand and silt going further downstream.^[5]