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Island was carried out as contemplated, the appropriation of $20,000 in 1873 having been expended for this purpose.

The appropriation of this year, $10,000, will be expended in continuing this work and in repairing the revetment to the cuts through Grassy Island.

The sum of 845,000 is required to complete this channel, of which 825,000 may be expended to advantage during the year ending June 30, 1876. Balance in Treasury of United States July 1, 1873..

$10,000 00 Amount in bands of officer and subject to his check.

9, 726 00 Aniomnt appropriated by act approved June 23, 1874

10,000 00 Amount expended during the fiscal year evding June 30, 1874.

19, 662 38 Amount available July 1, 1874....

10, 063 62 Amount required for the fiscal year ending June 30, 1876.

25, 000 00 (See Appendix B 3.)

4. Harbor of refuge at the entrance of the Sturgeon Bay Canal, Wisconsin.—This work was commenced about the beginning of the fiscal year, an appropriation of $10,000 having been made for it in 1873.

During the year two pile-piers were constiucted, each 762 feet in length. The filling of the piers was not entirely completed.

The appropriation of 1874, $10,000, will be expended in completing this filling and in extending each pier 32 feet, increasing the width of the pier from 14 to 18 feet.

The estimate submitted by the officer in charge for the further extension of these piers is $60,000. Balance in Treasury of United States July 1, 1873.

$20,000 00 Amount in bands of officer and subject to his check.

19,936 00 Amount appropriated by act approved June 23, 1874.

10, 000 00 Amount expended during the fiscal year ending June 30, 1874.

37,950 55 Amount available July 1, 1874...

11,955 45 Amount required for the fiscal year ending June 30, 1876, (as revised in this Ottice)...

40,000 CO (See Appendix B 4.)

5. Alnapee Harbor, Wisconsin.—During the season of 1873, the balance of the appropriation for this harbor, made in 1872, since which time there has been no appropriation, was expended in extending the south pier 175 feet, making its total length 620 feet.

The north pier is 352 feet in length. The failure of the appropriation in 1873 left the work incomplete.

To make this harbor available for any purpose requires a channel to be dredged between the piers into the river.

The officer in charge submits an estimate, for continuing the improve. ment, of $50,000. Amount in hands of officer and subject to lis check..

$9,390 11 Amout expended during the fiscal year ending June 30, 1874.

8, 9:26 06 Amout available July 1, 1874....

454 05 Amout required for fiscal year ending June 30, 1876, (as revised in this Office)

25, 000 00 (See Appendix B 5.)

6. Tuo Rivers Harbor, Wisconsin.--During the past year the superstructure bas been built over 1,031 feet of pile-foundation, and the piers filled with brush and stone, making the north pier 900 feet in lengthi

, and the south pier 965 feet.' The dredge was employed in excavating a channel for vessels of light drauglit. During the present season the dredge will be employed in continuing the excavation. The piers will be retilled where the tilling has settled, and the north side of the channel into the river revetted.

The appropriation of this year being but $15,000, and it being proposed to expend a portion of this sum in using the dredge at Ahnapee Harbor, (the cost of the dredge having been paid for equally out of the appropriations for these two harbors,) it will not be practicable to extend the piers this season, though such extension is necessary to the mainte. nance of the channel,

An estimate is submitted by the officer in charge, for the extension of the piers and dredging, of $50,000. Balance in Treasury of United States July 1, 1873...

$25,000 00 Amount included in expenditures of year ending June 30, 1873, to be deducted from balance in Treasury..

2, 892 94 Amount appropriated by act approved June 23, 1874..

15, 000 00 Amount expended during the fiscal year ending June 30, 1874..

22, 055 70 Amount available July 1, 1874

15,051 36 Amonnt required for the fiscal year ending June 30, 1876, (as revised in this Office).

25, 000 00 (See Appendix B 6.)

7. Manitowoc Harbor, Wisconsin. The work during the year bas con. sisted in extending each pier 100 feet. It is proposed this season to make a further extension of 100 feet to each pier. A still further extension of 200 feet to each pier is necessary to carry them to a depth of 18 feet of water.

An estimate is submitted for a portion of this extension. Balance in Treasury of United States July 1, 1873..

$20,000 00 Amount in hands of officer and subject to his check.

3, 635 02 Amount appropriated by act approved June 23, 1874.

10, 000 00 Amount expended during the fiscal year ending June 30, 1874

13, 794 24 Amount available July 1, 1874.

19, 840 78 Amount required for the fiscal year ending June 30, 1876.

25,000 00 (See Appendix B 7.)

8. Sheboygan Harbor, Wisconsin.-During the year 288 feet of old superstructure have been removed and replaced by new work. These repairs will be continued, and the channel between the piers dredged out. The superstructure over the two cribs sunk in 1873 will also be built. The repairs of the old superstructure must be continued, and an estimate of $12,000 is submitted for the purpose. Balance in Treasury of United States July 1, 1873 ..

$10,000 00 Ainonnt in hands of officer and subject to his check.

17,506 29 Amount appropriated by act approved June 23, 1874.

10,000 00 Amoant expended during the fiscal year ending June 30, 1874.

21, 496 09 Anount available July 1, 1874

16, 010 20 Amonnt required for the fiscal year ending June 30, 1876.

12, 000 00 (See Appendix B 8.)

9. Port Washington Harbor, Wisconsin.—The work during the year has consisted in extending each pier 100 feet, and in dredging 14,000 yards of material between the piers and in the basin.

The present appropriation of $10,000 will be applied to increasing the size of the basin and revetting its banks as fast as completed.

An estimate is submitted by the officer in charge, for continuing this improvement, of $50,000. Balance in Treasury of United States July 1, 1873..

$15, 000 00 tount in hands of officer and subject to his check

7, 442 78 Amoont appropriated by act approved June 23, 1874

10,000 00 duonnt espended during the fiscal year ending June 30, 1874

21, 804 64 Amount available July 1, 1874

10,638 14 Ajout required for the fiscal year ending June 30, 1876, (ás revised in this Once).

23, 000 00 See Appendix B 9.)

10. Milwaukee Harbor, Wisconsin.-During the year the sum of $10,000 was applied to widening and deepening the channel between the piers, by dredging. The appropriation of this year, $10,000, will be applied to the same purpose.

This harbor may be regarded as completed at present, so far as the extension of the piers is concerned. Periodical dredging will be required to maintain the channel, amounting to an average of $5,000 per annum. It has become necessary, however, to replace the old superstructure built in 1856 and 1857, and it is recommended that this be done with stone masonry, as the cribs appear to have obtained a permanent settlement. The total estimated cost of replacing 2,240 feet of superstructure is about $300,000, and an estimate for $100,000 is submitted by the officer in charge for the next fiscal year. Amount in hands of officer and subject to his check.

$10,000 00 Amount appropriated by act approved June 23, 1874.

10, 000 00 Amount expended during the fiscal year ending June 30, 1874.

9,568 73 Awount available July 1, 1874..

10, 431 27 Amount required for the tiscal year ending June 30, 1876, (as revised in this Office)....

50,000 00 (See Appendix B 10.)

11. Racine Harbor, Wisconsin. During the year the north pier has been extended by sinking two cribs, 50 feet long by 30 feet wide, making an extension of 100 feet, and in dredging 16,773 cubic yards from the channel between the piers. It is proposed to expend the $10,000 appropriation this year in placing one more crib in extension of this pier, and to build the superstructure over the two cribs placed last year. There will be required to complete this harbor for the present the completion of superstructure over the crib to be placed this season and dredging about 25,000 yards in the channel, for which an estimate is submitted. Balance in Treasury of United States July 1, 1873..

$20,000 00 Amount included in expenditure of year ending June 30, 1873, to be deducted from balance in Treasury.

88 00 Amount appropriated by act approved June 23, 1874..

10, 000 00 Amount expended during the tiscal year ending June 30, 1874.

19,520 40 Amount available July 1, 1874..

10, 391 60 Amount required for the fiscal year ending June 30, 1876..

10,000 00 (See Appendix B 11.

12. Kenosha Harbor, Wisconsin.-During the year the balance of the appropriation of 1872 was expended in building the superstructure over the crib sunk in extension of north pier in 1872. There being no ap. propriation in 1873 no other work was accomplished.

The sum of $10,000, appropriated in 1874, will be applied to siuking one crib 50 feet long and 30 feet wide, in extension of the north pier, and in repairs, as far as possible, of damage caused to old work by the storms of last winter.

There is necessary to the further improvement of this harbor an additional extension of 50 feet to the north pier, superstructure over crib to be sunk this season, repairs to old work, and dredging in the channel, for all of which an estimate is submitted. Amount in bands of officer and subject to his check.

$507 94 Amount appropriated by act approved June 23, 1874.

10,000 00 Anount expended during the fiscal year ending June 30, 1874.

371 35 Amount available July 1, 1874

10, 136 59 Amount required for the fiscal year ending June 30, 1876..

30,000 00 (See Appendix B 12.)

13. Chicago Harbor, Illinois.-The work during the year consisted in extending the breakwater southward 1,150 feet, with the exception of

the superstructure, and in repairing slight damages caused by collisions and storms.

The work contemplated during the coming fiscal year is an extension of the breakwater 150 feet farther south and the completion of the superstructure over the entire work. This will nearly, if not quite, complete the breakwater.

It is proposed to defer the construction of the southern breakwater until it is determined whether wharves are to be built on the west side of the new harbor.

The work next proposed on the improvement of this harbor is the extension of the north pier 400 feet, for which an estimate is submitted. Balance in Treasury of United States July 1, 1873...

90,000 00 Amount in hands of officer and subject to his check, (including $6,866.32, percentage due on contracts not yet completed).

20,423 47 Amount appropriated by act approved June 23, 1874

75,000 00 Amount expended during the tiscal year ending June 30, 1874.

107, 198 23 Amount available July 1, 1874

78,225 24 Amount required for tbe fiscal year ending Jane 30, 1876

78,000 00 (See Appendix B 13.)

14. Calumet Harbor, Illinois.—The work during the fiscal year at this barbor consisted in extending the north and south piers each 200 feet, with the exception of the superstructure, and in building the superstructure over the cribs sunk in 1872.

37,465 cubic yards of sand were also removed from the channel between the piers.

At the close of operations in 1873 there was a dredged channel between the piers nearly 100 feet wide and 11 feet deep, in the shoalest place.

The appropriation of 1874, $25,000, will be applied in further extension of the piers and in dredging.

An estimate is submitted for continuing this improvement: Balance in Treasury of United States July 1, 1873.

$20, 009 00 Amount in hands of officer and subject to his check.

19,992 27 Amount appropriated by act approved June 23, 1874.

25, 000 00 Amount expended during the fiscal year ending June 30, 1874.

39, 273 05 Amount available July 1, 1874..

25, 719 22 Amount required for the fiscal year ending June 30, 1876

75,000 00 (See Appendix B 14.)

15. Michigan City Harbor, Indiana.-During the year the east pier of the outer harbor has been extended 503 feet, and the west pier extended out to the line of the proposed breakwater.

It is proposed this season to commence the construction of the breakwater proper with the appropriation of 1874.

An estimate is submitted for continuing this improvement. Balance in Treasury of United States July 1, 1873

$50,000 00 Amount in hands of officer and subject to his check, (including $1,499.41 percentage due on contracts not yet completed).

30, 294 94 Amount appropriated by act approved June 23, 1874

50,000 00 Amount expended during the fiscal year ending June 30, 1874.

78,241 93 Amount available July 1, 1874..

52,053 01 Amount required for the fiscal year ending June 30, 1876

80, 000 00 (See Appendix B 15.)

16. Neue Buffalo Harbor, Michigan.--No work has been done on this harbor, and none is proposed. There bas been no appropriation made since 1872, and the amount available is too small to produce any benefit to commerce.

As mentioned in former reports, no estimate is submitted for this har.

bor, as it would be of no benefit to general commerce, and the local requirements are insignificant. Balance in Treasury of United States July 1, 1873..

$5,000 00 Amount in hands of officer and subject to his check

4,211 15 Amount expended during the fiscal year ending June 30, 1874.

1, 131 00 Amount available July 1, 1874

8,080 15 17. Improrement of the Foic and Wisconsin Rivers.—The improvement of these rivers is being carried on in accordance with the plans heretofore reported, and the results are given in detail in the accompanying reports.

The work on the Fox River has been confined to the Lower Fox. It has consisted of repairs to the old locks and dams, more or less extensive according to their condition, and in deepening the levels so as to obtain the maximum draught of water. The old lower combined lock at Little Chute, which was incapable of repairs, was torn out, and is in process of replacement by a permanent lock of stone masonry. This work is approaching completion. The old dam at Appleton was removed and is being replaced by a permanent dam of stone masonry, which will be finished this fall.

The completion of these two permanent works, the rebuilding of dam at Kaukauna and a few additional repairs to the old work, is all that is contemplated on the Lower Fox for the present.

On the Upper Fox nothing of importance, except surveys, was done during the year.

Work has been commenced under the appropriation of 1874, as fol. lows, viz:

The construction of a new stone masonry lock, near Eureka; the thorough repairs of Winnebago Lock; the deepening and revetting of the Portage Canal, and complete surveys of the Upper Fox.

On the Wisconsin River, the construction of wing-dams has progressed in accordance with the plan adopted for the improvement of the river, resulting, wherever the works have been completed, in obtaining an improved channel.

This work will be continued during the present working season.

Annual appropriations adequate to the magnitude of this work are earnestly recommended. Balance in Treasury of United States July 1, 1873.

$200, 000 00 Amount in hands of officer and subject to his check.

27,837 13 Amount received from tolls for year ending June 30, 1873.

1,893 27 Amount appropriated by act approved June 30, 1874...

306, 000 00 Amount expended during the fiscal year ending June 30, 1874.

229, 907 92 Amount available July 1, 1874

299, 822 48 Amount required for the fiscal year ending June 30, 1876

750, 000 00 (See Appendix B 16.)

HARBORS ON THE EASTERN SHORE OF LAKE MICHIGAN.

Officer in charge, Capt.(now Maj.) S. M. Mansfield, Corps of Engineers.

1. Frankfort Harbor, Michigan.—During the year the south pier has been extended 150 feet, (3 cribs.) During the coming season this pier will be further extended 50 feet, (1 crib,) the channel dredged through. out, and some necessary repairs put upon the old work.

Thirty-six thousand dollars will be required to complete the improvements. Balance in Treasury of United States July 1, 1873.,

$15, 007 97 Deduct amount expended last fiscal year

441 46 Amount appropriated by act approved June 23, 1874

10,000 00

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