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<br />Kaskaskia Mutual Dredged Channel near Bondville, illinois. Approximate bottom
<br />width 10 feet. Picture taken April 1925.
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<br /> Aver- A\'er. I Aver- Moan Coefll.
<br /> .go Moan Slope of ciental
<br />Date..ofobser- maxl- ." Dig- I ..' veloc- hy- wattlr rough- Description of chQIlDel
<br />vatloD mum surface charge """ ity draulic surface n=
<br /> depth width section radius n
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<br />Feb. 7,1925 21 16.5 21.D 24.. 0.8' 1.36 0.000473 0.040 CoUTU, straight: 330 feet long. Gr088 6ection, some variation In shape; for
<br />Mar. 16.192.'i 3.0 1&9 '" 39.6 1.15 1.89 .000424 .03' variation in size, see Figure 20, O. Side 81(Jpe8, father Irregular. BotWm,
<br />MIU'.29,lm .. 27.. 10Il.7 '28 1,15 &00 .000367 .001 father irregular. Soil, lower part, black claYi upper part, dark-gray silty
<br />Feb. 25,1926 '.7 29.6 100.7 165.7 .95 3.19 .000394 .067 clay loam. CondUion, badly obstructed by trees 1 to 6 Inches tn diam-
<br /> eter on side slopes and edges of bottom; some weeds but practically DO
<br /> grass; no foliage. ComtTmUd, 1002; cleared, about ItHO. (PI. 'nt C
<br /> and fig. 19, 0.)
<br />Aug. 24,1924 '.1 23.. 67.1 64.6 1.00 250 O. 000494 0". Condition, as described above, but with summer foliage, and water wood
<br />June 6,1924 ... 24.1 722 71.9 1.00 266 . 000400 .656 on bottom along on&-tenth of course.
<br />___..don...... .. 26.8 ...6 88.1 .97 295 .000373 .060
<br />Aug. 21,1924 6.1 30.9 120.4\ 116.6 1.03 3.36 .000427 .067
<br />Aug.20,HI24 .. 41.0 200.1 200.2 1.03 4.35 .000536 .m
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<br />Kaskaskia Mutual Dredged Channel near Bondville, illinois. Approximate bottom
<br />width 10 feet. Picture taken July 1927.
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<br /> Aver- Aver- Aver- Mean Coem.
<br />Date of obser- ..' su~~:ce Dis- ",,' Mean h~'- Slope 01 clentor
<br />vatlon maxi- charge' """ "eloe- drauHc water rough.
<br /> mnm width sectlon ity radius surface n,,,
<br /> depth n
<br />" ---- ---
<br />Sept. 28,1926 '.3 23.8 ..6 68.' 0.70 258 0. (XI66" 0.097
<br />Sept. 9,1926 7.' 34.3 111.5 157.8 .71 '.00 . 000388 .no
<br />Oct. 2,1926 .6 "'. 132.3 176.4 .76 '.24 . 000400 .111
<br />4~.~_do.______ .6 40.0 160.6 200.' .86 4.43 .000421 .100
<br />_..___wn__n__ 19.0 nnnn __n.._n_ ________ n___h ______n _n_____u _n.___.
<br />I Average maxImum depth at bankful stage.
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<br />Description of channel
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<br />Count, nearly straight; 330 feet long. CrOSB Bedim, some variation In
<br />shape; lor variation In size, see Figure 20, F.
<br />Side swpa, irregular. BctWm irregular. Soil lower part, black clay;
<br />upper part, dark.gray silty clay loam. Cond"luOn, badly obstructed by
<br />trees 2 to 12 Inches in diameter covering side slopes, except intervals
<br />aggregating hall length of right bank occupied by large woods and busby
<br />wUlows; no foliage. Constructed, 1902; cleared, about 1910.
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<br />Omdition, 8S In summer of 1924, but worse. (Pl. Zi, B.)
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