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STATEMENT A.-Summary of work done, and amounts paid to contractors, for the improvement of the Nlinois River, from 1869 to June 30, 1878.

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Sycamore
Spring Creek
Tree-Top
Coat Island
Negro Creek
Bureau
Muscle Shell
Hennepin Flats.
Sister Island.
Willow Island
Henry
Spring Branch.
Crow Creek
Smachnine
Peoria Bridge
Peoria Flats
Kickapoo
Dick Creek
.....do
Tamarack Island -Kingston Flats.
Dutchian's
Lancaster Flats.
Coon Valley
Canton Landing
Copperas Creek.

Hooded when the dam at Henry was constructed, bys State; no dredg.

ing needed. In pool formed by CopperasThese bars were all

Creek dam.

50 50 120 1.50 150

4, 932. 6 3, 249.7 5, 314.0 5, 575. 7 4, 316.0 61, 569. 1 16, 576, 0 1, 295. 8

$1, 973 04

1, 299 88
2, 125 60
2, 230 28
1, 738 40
24, 627 64

6, 630 40 12, 518 32

!!

pro Reported at 7 feet

below raised water surface after the

Henry dam. Seven feet, after dam was construction of

500

2.0 1, 800 150 4. 0 2, 000 150 5. 0 40 000

150 5. 0 3. 8

150 5. O 3.8 600

125 4.0 2. 4 7, 500

125 4.0
2. 3
1,500

150 4.0
2. 3 2, 750 150 4. 0
Res toration of channel in
2. 2

3, 500 150 4.0
2. 5

6, 000 150 4.0
2.8
3.5
2.6
3. O

50 100 30

1871
1869
1871

1869
1870, 1871
1870, 1871

1870
1870
1874
1870
1870

built.

19

50 50

22, 916. 0 9, 166 40 28, 775.0 11,510 00 Bars flooded by

dam. Nodredy ing needed.

20 21

23 24

100 50 50

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STATEMENT A.-Summary of work done, and amounts paid to contractors, for the improvement of the Illinois River, from 1869 to June 30, 1878—Continued.

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25

Devil's Elbow

Cubie yards.

42, 298.5 $10, 468 88

Feet. 4.5

1871

Channel filled up to 2 feet.

25 |---...do

16, 312.0

4,078 00

4.0

1877

Restoration of channel.

26 27

Bath Chute, entrance to Sagar Creek

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27 28 29

30, 811.0 49, 399.0 22. 506.0

7, 810.0 18, 486.4 60, 022. 1

.do Toll-gate Beardstown

Restoration of channel.

7, 702 75 12, 349 75 6, 301 68 2, 186 80 4, 575 38 14, 855 46

Feet. Feet. Feet. Feet. 75 2.5

2, 750 150 1,400 80 800

60 75 1.8 000

40

2, 500 140
100
2.0

60
20
1.0

110

600 120
Dry bar.

60
50 2.8 2, 500 150
30 2. 2 5, 3001 150

1, 8001
For restoration of channel.

40 2. 3 4, 000 150 50 2.5 3, 100

120
50 1.8

6,000 150
For restoration of channel.

25 2.0 8, 600 105
50
2.3
2, 250

150
2.5

140
40
3. 0

140

140 3.0

140 110) 28

110

3.3 4. 5 4.5

1

1876

1871 1871, 72, 73

60

29

..do
Morris Island
31 ' McKee's Creek
32 Naples Bar, No. 1.
33 Naples Bar, No. 2
354, (iar Island or Naples Flats

Blue River..

Little Blue River
37 Slim Islam

Bedford
01 Pilot Prak

Buckborn
Grand Pami

4, 191.0 36, 993 32, 901 35, 921

7, 315 53, 172

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12, 183 20, 1.56

2, 433 16, 632 28, 004

4.0

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1M71

Pear hoalu

3, 335 10

120

4.0

1878), 1877

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H. Ex. 87 - 2

811, 434.9

235, 785 39

123, 320

$235, 785 39

17,050 77

(a) Total dredging, 811, 434.9 cubic yards.
(b) Time-work by dredge, snagging, casting on dams, &c., 1,655" 23
(c) Brush and stone dams:

3,976 cords brush, cost
5,370.7 cubic yards stone, cost......
26,393 linear feet piles, cost.....

Making about 6,000 linear feet
(d) Foundations Copperas Creek lock, cost..
(e) Removing wreck near Peru, cost ..

$9, 408 98
15, 749 15
3,958 95

29, 117 08
62,358 90

450 00

Aggregate of amounts paid to contractors, items (a), (b), (c), (d), and (e).

344, 762 14 STATEMENT B.

Amounts allotted to, and appropriated for, the improvement of the Illinois Rirer from 19

to 1878, inclusive.

Act approved April 10, 1869, for repairs, preservation, &c., of river and

harbor works, allotted..
Act approved July 11, 1870, appropriated..
Act approved March 3, 1873, appropriated.
Act approved June 23, 1874, appropriated
Act approved March 3, 1075, appropriated.
Act approved August 14. 1076, appropriated
Act approved June 18, 1878, appropriated

$24,150 ) 100.000 100,000 75, (( 75,00 40,00 75.)

Total from 1869 to June 30, 1878.

549, 150 00

STATEMENT C.

Statement derived from annual reports, showing total expenditures applied improring the

Mlinois River, from the beginning of work in 1869 to June 30, 1878.

Total amount expended from June 30, 1869, to June 30, 1872.
Total amount expended during fiscal year ending June 30, 1873..
Total amount expended during fiscal year ending June 30, 1874.
Total amount expended during fiscal year ending June 30, 1875.
Total amount expended during fiscal year ending June 30, 1876.
Total amount expended during fiscal year ending June 30, 1877.
Total amount expended during fiscal year ending June 30, 1878..

$171, 00147

13.-1934 52,796 73 2.796 ir? 73, 1:34 52,000 24, 490 72

471, 016 61

Total expenditures to June 30, 1878........
This amount is arrived at hy the following process :
There was allotted from act of April 10, 1869..
There was appropriated July 11, 1070

$84,130) (0 100,00 10

184, 151) (u)

Total appropriated to June 30, 1872... The balance available June 30, 1872, per financial statement, Report Chief of Engineers for 1872, page 281.

Difference assumed as expended.......

12, 345 53

171, 601 47

LETTER OF THE CHIEF OF ENGINEERS.

OFFICE OF THE CHIEF OF ENGINEERS,

Washington, D. C., November 18, 1878. SIR: In the further prosecution of the improvement of Illinois River, by whatever plan that may hereafter be adopted, more or less dredging will always be necessary, and it would appear from the accompanying report of Capt. G. J. Lydecker, Corps of Engineers, the officer in charge, herewith submitted, that such works will be more economically done with machinery owned and operated by the government.

I beg leave, therefore, to recommend that so much of the appropria tion of $75,000, of June 18, 1878, as may be necessary, be applied to the construction or purchase of requisite machinery, and that the balance be applied to operating expenses and the purchase of materials (brush and stone) for continuing the construction of dams and jetties. The work to be done by hired labor and the materials purchased in open market.

The present time appearing opportune for the consideration of the various improvements on the Illinois River, having in view the preparation of a plan for its permanent and radical improvement, it was deemed advisable, before taking steps towards the application of the funds now available, to inquire particularly into the present condition of this work. With this view, and by instructions from this office, Captain Lydecker transmitted the report which I now submit, in which he gives a history of the improvements made to the present time, showing what general plan has been adopted and how far the expenditures have been applied to carrying out that plan, and what changes have been found necessary during the progress of the work, &c.

Captain Lydecker's report leads to the conclusion that while a radical improvement might be effected by means of dredging and wing-dams, its cost would exceed the cost of a slack-water system, and the improvement would be less certain and would require considerable annual expenditure for maintenance.

Captain Lydecker appears to be correct in his conclusions, but until the question of continuing the slack-water system below the locks already built by the State of Illinois is sanctioned by Congress, the expenditure of the present appropriation can only be applied, as heretofore, to the continuation of the plan of dredging and wing-dams. Very respectfully, your obedient servant,

A. A. HUMPHREYS,

Brigadier-General and Chief of Engineers. Hon. GEO. W. MCCRARY,

Secretary of War.

[Indorsement. 1 Approved. By order of the Secretary of War.

JOHN TWEEDALE,

Acting Chief Clerk. NOVEMBER 19, 1878.

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