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8. Otter Creek, Vermont.—The project for this improvement proposes the formation of a channel of navigable width and a least depth of 8 feet from Vergennes, Vt., to Lake Champlain.

The appropriation of September 19, 1890, $5,000, was expended under contract in the removal by dredging of 20,995 cubic yards from such shoals as most required deepening.

There has been expended to June 30, 1892, $41,500.

The stream now requires some 2,000 yards of rock excavation to carry out the original scheme for improvement, but unfortunately the channel afforded is not likely to prove permanent. July 1, 1891, balance unexpended

$4, 979. 17 June 30, 1892, amount expended during fiscal year.

4,979. 17 Amount appropriated by act approved July 13, 1892

10,000.00 (See Appendix P P 8.)

9. Ticonderoga River, New York.—The project for this improvement was adopted in 1881, its object being to afford a channel of navigable width and least depth of 8 feet at low water from Ticonderoga village to Lake Champlain, a distance of about 2 miles.

The original estimated cost of the improvement was $42,516, and the amount expended has resulted in an improved channel.

The appropriation of September 19, 1890, $2,000, was expended under contract, and operations consisted in the dredging and removal of 8,132 cubic yards of material froin shoals near the mouth of the river. July 1, 1891, balance unexpended.

$1,977. 75 June 30, 1892, amount expended during fiscal year.

1,977. 75 Amount (estimated) required for completion of existing project ....... 26,016. 00 Submitted in compliance with requirements of sections 2 of river and

harbor acts of 1866 and 1867. (See Appendix PP 9.)

10. Narrows of Lake Champlain, New York and Vermont.-The project for this improvement was adopted in 1885, and has for its object the removal of such obstructions in the channel as will afford a least depth of 12 feet, and a least width of 150 feet from Whitehall to the Elbow, and 12 feet depth and 200 feet width along Cedar Mountain and across Kenyon Bay.

The entire undertaking was estimated to cost $80,000; $45,000 had been appropriated, and the original project stood completed two years ago at a little more than half the estimated cost. July 1, 1891, balance unexpended..

$2,668. 87 June 30, 1892, amonnt expended during fiscal year.

378.83 July 1, 1892, balance unexpended...

2, 290.04 Amount appropriated by act approved July 13, 1892.

18,500.00 Amount available for fiscal year ending June 30, 1893.

20, 790.04 (See Appendix P P 10.)

PACIFIC COAST.

IMPROVEMENT OF OAKLAND HARBOR, CALIFORNIA. Officer in charge, Col. G. H. Mendell, Corps of Engineers, having under his immediate orders Lient. H.C. Newcomer, Corps of Engineers, the entire year, Lieut. Charles L. Potter, Corps of Engineers, to July 28, 1891, and Lieut. Clement A. F. Flagler, Corps of Engineers, since June 7, 1892.

The principal features of this improvement as originally projected

are (1) two mid-tide training walls of rubble stone extended from the shore westward into San Francisco Bay about 2 miles; (2) a connection by a canal 11 miles in length with the estuary of San Leandro; (3) a dam at the mouth of this estuary; (4) dredging of basins and channels to give a depth of 20 feet at low tide, which at high tide will accommodate vessels of the largest class.

Two modifications of the original project have been adopted, namely, to increase the width of tidal canal from 300 to 400 feet, and to raise . the height of jetties from half-tide level to full high water.

In the original condition of the entrance the low-water channel depth was about 2 feet, admitting at time of high tide vessels drawing 6 to 8 feet of water. The present navigable condition is a convenient channel from Bay of San Francisco to the main wharves of Oakland, for the most part 300 feet in width, and at no point less than 225 feet in width, with a low-water depth of 14 feet, admitting vessels of 18 feet draft at ordinary high water. In the upper basin the navigation is confined to vessels of about 10 feet draft or less.

The total amount expended on this improvement was on June 30, 1892, $1,452,180.70.

The operations of the past year are as follows:

The contracts in force at beginning of the year for dredging the basin, for stone work on the jetties, for piers and steel superstructure of a highway bridge over the canal at Park street, Alameda, were completed during the year.

The amount of dredging in basin was 632,905 cubic yards of spoil securely placed ashore behind levees.

The north jetty was completed excepting a little work required to finish the enlarged terminal mound. The amount of stone delivered on the jetty during the year is 9,815 tons, and it was laid up in form to the extent of 31,528 square feet of dry masonry.

Some work had been done in excavating for bridge piers at the beginning of the year. The excavation was finished, the concrete piers put in, and the steel superstructure was erected during the year. The bridge was completed on December 7, 1891, and has since been open to travel. The length of the bridge is 363 feet, including approaches, and the quantity of metal 1953 tons. The piers contain 2,351.8 cubic yards of masonry.

The contract for excavating the canal had at the beginning of the year been advanced to the extent of 250,820 cubic yards. Progress was made during the year to the extent as measured of 142,088 cubic yards, leaving for fulfillment of contract an estimated amount of 107,000 cubic yards, which is in default, the contract date of fulfillment having been June 30, 1892.

The contract for additional improvement of channel in front of wharves of Oakland requires work to begin on July 18, 1892.

The operations contemplated for the ensuing year are improvement of the channels, continued excavation of the canal, completing the existing portion of the south jetty, and extending it. July 1, 1891, balance unexpended...

$247, 266. 79 June 30, 1892, amount expended during fiscal year.

164, 847.49 July 1, 1892, balance unexpended....

82, 419. 30 July 1, 1892, amount covered by uncompleted contracts.

63, 676. 37 July 1, 1892, balance available...

18, 742.93 Amount appropriated by act approved July 13, 1892.

150,000.00 Amount available for fiscal year ending June 30,1893..

168, 742.93

Amount (estimated) required for completion of existing project...... $841, 000.00 Submitted in compliance with requirements of sections 2 of river and

harbor acts of 1866 and 1867. (See Appendix Q Q.)

IMPROVEMENT OF NAPA RIVER, REDWOOD CREEK, AND SAN LUIS

OBISPO, WILMINGTON, AND SAN DIEGO HARBORS, CALIFORNIA.

Officer in charge, Lieut. Col. W. H. H. Benyaurd, Corps of Engineers, having under his immediate orders Lieut. James J. Meyler, Corps of Engineers, the entire year, and Lieut. Charles L. Potter, Corps of Engineers, since July 29, 1891.

1. Napa River, California.-The project is to clear the river of snags and the banks of overhanging trees interfering with navigation, and to dredge the bars between Vernon Mills and Carr Bend, in the immediate vicinity of Napa City, so as to give throughout that stretch a navigable channel 75 feet wide and 4 feet deep at low water.

Work upon the improvement was commenced in 1889. During that year the river was cleared of snags, and a gravel bar near the steamboat landing was removed by dredging.

During the past year operations were continued under contract with Thomas H. Williams, jr. Thirty-two snags were removed, and a channel of the required width and depth was dredged through 16 bars, re. quiring the removal of 21,972 cubic yards of material.

The entire work contracted for was completed December 11 last, leaving the river in good boating condition, and completing the present project. The work can not be considered of a permanent character, as the bars will re-form from material brought down during winter storms. Appropriations will therefore be needed in the future to maintain the channel in a fair navigable condition.

The total amount appropriated for this work is $17,500, and the total amount expended to the close of the fiscal year is $17,458.57. July 1, 1891, balance unexpended

$12, 219, 20 June 30, 1892, amount expended during fiscal year.

12, 177. 77 July 1, 1892, balance unexpended....

41.43 (See Appendix R R 1.)

2. Redwood Creek, California.—This improvement is a continuance of that heretofore carried on under appropriations made for improvement of Redwood Harbor. The project for the latter work contemplated dredging the creek from the old steamer landing to Redwood City, a distance of about 6,000 feet, so as to give through that stretch a channel 50 feet wide and 3 feet deep at mean low tide. This work was completed in 1889. Examination made the following year showed that the channel had partially filled up from natural causes. The appropriation of $8,000 made by the river and harbor act of September 19, 1890, was for the purpose of redredging the channel and widening the passage through the middle ground.

Work was coinmenced upon this project about the middle of March last with the Government dredger belonging to the improvement of the San Joaquin River. At the close of the fiscal year the channel had been redredged for a distance of 4,600 feet, requiring the removal of 40,845 cubic yards of material. It is expected to complete the entire work before the end of August. As this will complete the project no additional appropriations are asked.

The present improvement, like the former, can not be considered of a permanent character. There being no tidal basin, there will be a constant tendency to shoaling, due to natural causes. Appropriations will therefore be needed in the future to maintain the creek in a navigable condition.

The total amount appropriated for dredging at Redwood is $23,400, of which $8,000 was for Redwood Creek, and the total amount expended to the close of the fiscal year, including outstanding liabilities, is $20,950.92. July 1, 1891, balance unexpended

$8,000.00 June 30, 1892, amount expended during fiscal year.

5, 291.82 July 1, 1892, balance unexpended

2, 708.18 July 1, 1892, outstanding liabilities

259. 10 July 1, 1892, balance available

2,449.08 (See Appendix R R 2.)

3. San Luis Obispo Harbor, California.The project for this improvement is intended to secure a protected anchorage and landing at Port Harford by the construction of a breakwater on Whaler Reef, extending from Point San Luis to Whaler Island, and thence to a point where the outer reef rises above high water. The total length of the structure, when completed, including the island, will be about 2,300 feet.

That portion of the breakwater between Point San Luis and the island, about 300 feet in length, was completed two years ago, and a commencement was made upon the extension beyond the island. During the past year the latter work has been continued under contract with the San Francisco Bridge Company, and the outer breakwater has been advanced a distance of about 300 feet, and depressions in the reef beyond have been partially filled. The total amount of rock placed upon the reef the past season was 7,870.5 tons. Work under the present contract will be completed in August.

The total amount appropriated for this improvement is $65,000, and the total amount expended is $52,053.07. July 1, 1891, balance unexpended

$39, 082. 56 June 30, 1892, amount expended during fiscal year.

19, 435. 79 July 1, 1892, balance unexpended

19, 646. 77 July 1, 1892, outstanding liabilities

$6, 699.84 July 1, 1892, amount covered by uncompleted contracts. 11, 952.04

18, 651. 88 July 1, 1892, balance available....

994.89 Amount appropriated by act approved July 13, 1892.

30,000.00 Amount available for fiscal year ending June 30, 1893.

30,994. 89

Amount (estimated) required for completion of existing project 189, 900.00 Submitted in compliance with requirements of sections 2 of river and

harbor acts of 1866 and 1867. (See Appendix R R 3.) 4. Wilmington Harbor, California.—Previous to the commencement of this improvement in 1871, there was a depth of less than 2 feet at the entrance at low tide. By the operations of dredging and jetty exten, sion this depth was increased to 10 feet in 1881. The present projectwhich was adopted in that year, was intended to secure a depth of 16 feet at mean low tide.

That depth has been obtained through the entire channel inside. Over the bar the depth is fully 14 feet at above stage of water.

During the past year operations have consisted in making needed repairs to the east jetty; in removing, by dredging and blasting, shoal places in the channel near Deadmans Island, and in raising and extending the west jetty.

Contractors delivered 21,309 tons of stone, which was used in strengthening the east jetty and in extending the west jetty. The latter work was advanced a further distance of 800 feet.

During the coming season the work of jetty extension will be continued to the extent of the available funds.

The total amount appropriated for this work is $904,000, and the total amount expended to close of the fiscal year, including outstanding liabilities, is $894,450.64. July 1, 1891, balance unexpended..

$85, 568. 18 June 30, 1892, amount expended during fiscal year

75, 893. 60 July 1, 1892, balance unexpended.

9, 674.58 July 1, 1892, outstanding liabilities.

125. 22 July 1, 1892, balance available

9, 549.36 Amount appropriated by act approved July 13, 1892

51,000.00 Amount available for fiscal year ending June 30, 1893

60, 549.36 (See Appendix R R 4.)

5. San Diego Harbor, California. Before the adoption of the present project, the work carried on at San Diego had for its object the preservation of the barbor, which was being injured by the deposition of material brought down the San Diego River in flood stages. The river was diverted from its course, and caused to empty into False Bay. This was accomplished by building a substantial levee across the old channel of the river near its entrance to the harbor, and excavating a new water way leading to False Bay. This work was completed in 1876.

The present project for the improvement of the harbor contemplates the preservation and repair of the levee; securing a depth of 26 feet at mean low tide over the bar at the entrance by the construction of a jetty on Zuninga shoal, and maintaining a channel of 24 feet depth of water over the middle ground.

At the commencement of the fiscal year, dredging was in progress at the head of the middle ground. The channel was excavated for a width of 250 feet to a depth of 22 feet at mean low tide. This channel partially filled up again. It is not intended to continue operations at this point until the jetty at the entrance has been extended seaward sufficiently to control the movement of sand on Zuninga shoal.

No work has been done towards the construction of the jetty. Pro. ceedings were instituted last October in the United States circuit court for the southern district of California, to condemn a strip of 18.85 acres on Coronado North Island, needed for jetty purposes. The case came to trial in June, and an award of $13,942.46 was made by the jury for the land in question. Upon possession of the land being obtained by the United States, the work will be commenced.

The total amount appropriated for the improvement of San Diego Harbor since 1875 is $192,500.

The total amount expended is $91,740.19, of which $82,085.37 was upon the construction and repair of levee across San Diego River.

ENG 92—24

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