XXXll FISHES OF ILLINOIS 



south, lies in another such valley. Edwards River rises at an 

 altitude of 800 feet, falls 50 feet in its first one and one half 

 miles, and another 50 feet in the next 18 miles. The mouth is 

 about 520 feet above sea-level. The stream has a length of 67 

 miles, draining an area of 446 square miles. 



POPE CREEK 



Pope creek rises in northern Knox county and flows west- 

 ward, emptying into the Mississippi almost opposite the mouth 

 of Iowa River. It rises at an altitude of 750 feet, but its mouth 

 lies at 520 feet. Its length is about 50 miles, and its drainage 

 area is 167 square miles. The bluffs bordering the river are 

 abrupt and often reach a height of 75 to 125 feet. 



HENDERSON RIVER 



Henderson River rises in two forks, one in the northwest 

 corner of Knox county and the other in Warren county, and 

 flows westward and southward, emptjang into the Mississippi 

 at the center of the western border of Henderson county. It 

 drains much of northern Henderson, northern Warren, and part 

 of Knox county, and, although having a total length of scarcely 

 77 miles, it furnishes drainage through its numerous branches 

 for an area of fully 500 square miles. It rises at an elevation of 

 800 feet, and descends 100 feet in its first 10 miles, but below 

 this the fall is gradual, the altitude at its mouth being 520 feet. 



BEAR CREEK 



Bear creek drains the southwestern part of Hancock county 

 and the northern part of Adams — a possible area of 518 square 

 miles. The main branch rises in southern Hancock county and 

 flows south and west 48 miles, emptying into the Mississippi 

 opposite Canton, Mo. The source of this stream is at an eleva- 

 tion of 670 feet, while the mouth has an altitude of 460 feet. 



BAY CREEK 



Bay creek drains a large part of Pike county and a little of 

 northern Calhoun. It rises in northern Pike county and flows 

 southeastward toward the Illinois River, following a sag be- 

 tween two Illinoisan drift ridges, and nearly reaching the Illinois 

 opposite the village of Bedford. It then curves to the south- 

 west, passes through a gap in the rocky ridge, which to the 

 north and south constitutes the divide between the Mississippi 

 and the Ilhnois, and enters the Mississippi opposite the town 



