406 
the first mile below Six Mile Island—a local section with little drop in 
levels at low water—had a deep deposit of light-colored mud in 1913, 
but apparently much less two years later. 
In the 46 miles between Lagrange and Kampsville extreme depths in 
the channel at the low water of 1901 ranged from 9 to 11 feet as a rule, 
and did not anywhere exceed 15 feet. Widths at these levels were be- 
tween 1,000 and 1,400 feet for good stretches, and did not fall below 800 
feet for any important distance. Below the Kampsville dam widths 
were seldom under 800 feet, ranging between 1,000 and 1,200 feet 
for most of the way, and reaching a maximum of 1,600 in the sluggish 
section just below Six Mile Island. 
Connecting lake and other backwater acreage per mile between La- 
grange and the mouth of the Illinois at the low levels of 1901 (219.6 
acres per mile between Lagrange and Florence; 180.0 between Florence 
and Kampsville; 86.9 between Kampsville and the mouth) compared 
unfavorably with that of most of the river between Chillicothe and 
Havana.* The greater part of this backwater was levéed and drained 
between 1901 and 1913, resulting, no doubt, in recent years in a some- 
what better scoured channel even than is indicated by the government 
borings made between 1901 and 1905. As in the 42 miles above the 
Lagrange dam, shore vegetation between Lagrange and the mouth of 
the river has in recent years been a negligible quantity. 
Borrom CoLLecTions, LAGRANGE TO GRAFTON, 1915 
Miles 
above Station Channel 4—T-tt.)| le Sees 
Crafted : zone zone 
Talat 1% mile above Meredosia 1 2 8 
60.0 1% miles below Valley 1 
55.6 Opposite Florence 1 
54.5 1 mile below Florence ab 
Motales ao. cles 4 2 ou 
47.7 %4 mile below Bedford 1 6 4 
43.2 Opposite foot Pearl Island Fi 5 2 
36.5 1%4-way Apple Creek to Panther Cr. 1 6 2 
33.0 1 mile above Kampsville tb 
31.6 300 yards above Kampsville dam i 
Motalaeneo cece 5 17 8 
25.7 Opposite (west) head Diamond Is- 
land 1 
20.6 ¥Y% mile below Hardin 1 2 4 
11.5 1 mile below foot Mortland Island 1 4 2 
9.3 Opposite Bloom’s Landing 2 2 
8.5 Opposite head Six-Mile Island 1 4 
7.3 Below foot Six-Mile Island 1 2 4 
EQ ta ee ters ares 7 12 nb} 
Grand total........ 16 31 28 
* Table, p. 378. 
