ations under it from September, 1899, to June 30, 1900, attention is invited to the Annual Report of the Chief of Engineers for 1900, p. 4274.) The work required under this contract was completed on March 15, 1901. Between July 1, 1900, and March 15, 1901, the contractors furnished and placed the following-named quantities of materials in the portions of the work named:

Total gross amount earned by contractors.

Less deductions for rent of Government plant and for Government materials sold contractors

Less value of Government plant not returned by contractors upon completion of contract...

Total net amount earned by contractors in fiscal year
ending June 30, 1901

59, 874.86 60,999.82

$3,830.46

128.45

3, 958. 91

57, 040. 91

The placing of the above-named materials resulted in rebuilding the 80 feet of the north jetty tramway from bent No. 644 to bent No. 648, both inclusive, so that rubblestone could be dumped from the tramway to the jetty below at all points throughout its length of about 2 miles, and in raising the crest of the rubblestone mound composing the jetty to its projected height at practically all points throughout its length. The rubblestone furnished and placed by the contractors during the past fiscal year was placed at and near the sea end of the jetty, with the exception of about 5,000 tons which were placed in the jetty at various other points where slight settlement had occurred. In August, 1900, the crest of the jetty was up to its projected height at practically all points throughout its entire length. Since that time storms have carried away about 600 feet of the tramway at its sea end, and beaten the jetty itself down so that for several hundred feet at its sea end its crest is 10 or 12 feet below low tide level. However, this settlement of the few hundred feet of the sea end of the jetty has not thus far lessened the effectiveness of the jetty to any appreciable extent.

The greater portion of the rubblestone placed in the jetty by the contractors during the past fiscal year was taken from the Government quarry on the North Fork of Coos River, about 22 miles from the shore end of the jetty. As in former years, the stone was loaded on scows at the quarry and towed to the wharf at the shore end of the jetty, where it was transferred by derrick to dump cars. The loaded cars were then hauled out on the tramway to the proper point over the jetty by small locomotives and the stone dumped in place on the jetty below. The weight of the rubblestone placed in the jetty by the contractors during the past fiscal year was ascertained by track scales.

The number of men employed each day by the contractors at the

quarry and at the jetty from July 1, 1900, to March 15, 1901, on which latter date the contract was completed, varied from 75 to 100.

During a few days in December, 1900, the bar channel shoaled so that at one time there was but 16 feet of water in it at low tide, but immediately afterwards the least depth that could be found in the channel at low tide was 25 feet. The average depth that has prevailed in the bar channel during the past fiscal year has been about 20 feet at low tide, as called for by the project.

The severe storms of the early part of the winter of 1900 caused considerable erosion along the shore of the bay in the vicinity of the shore end of the jetty, which threatened to undermine the piles of the jetty tramway near the wharf. This erosion was stopped by protecting the shore with mattresses of brush fascines and poles, weighted with small stone, the materials for the mattresses being obtained by hired labor, and the stone being purchased of the contractors for the jetty work at the contract price, 574 cents per ton. About 80 cords of brush fascines and 500 tons of rubblestone were so used in protecting the shore.

The small quantity of the Holland grass (Arundo arenaria) planted as an experiment in past years, with the view of holding the shifting sands of the north spit, thrived satisfactorily during the past year.

Photographs of the jetty, taken in June, 1900, and a map of the latest survey of the entrance to the bay, made in August, 1899, appear opposite page 4278 of the Annual Report of the Chief of Engineers for 1900.

Mr. Morton L. Tower, inspector, has been in immediate charge of operations at the entrance to the bay during the past fiscal year.

As above stated, the north jetty tramway and the north jetty itself have deteriorated at the sea end. Furthermore, older portions of the tramway, near its shore end, have deteriorated, through natural decay and the ravages of the teredo, requiring somewhat extensive repairs to be made before more stone can be placed in the 500 or 600 feet of the sea end of the jetty. The wharf at the shore end of the jetty should also be rebuilt, and the Government plant, which has been in use a number of years, requires extensive repairs. The following is an estimate of the cost of restoring the jetty so that its crest will be up to the projected height at all points throughout its length of 9,600 feet:

Repairs to north jetty tramway.

Rebuilding wharf at shore end of jetty.

Repairs to plant....

$7,338. 94

2, 633.76 16,000.00

Rubble stone for jetty (153,216 tons, at 70 cents per ton in place in jetty). 107, 251. 20 Engineering, superintendence, inspection, etc.

Deduct balance available July 1, 1901..........

Balance

20,000.00

Accordingly, the sum of $142,970.64 is named in the appended money statement as the amount, in addition to the balance available July 1, 1901, that can be profitably expended for maintenance of improvement, in fiscal year ending June 30, 1903. It seems proper to add in this connection that a less amount than this could not be economically or advantageously applied at this time, for the reason that the somewhat extensive repairs required to be made to the tramway, plant, etc., ENG 1901-218

before additional rubble stone can be placed in the sea end of the jetty should not be undertaken unless there is also available at the same time sufficient funds with which to proceed immediately with the work of placing the necessary additional stone in the jetty. It also seems proper to add that, judging from past experience at Coos Bay, the jetty in its present condition may possibly continue to maintain the projected depth in the bar channel. However, in view of the doubt on this point, the locality is considered to be worthy of improvement at this time to the extent of restoring the works of improvement at the estimated cost named above.

(Amount (estimated) required for completion of existing project..... 1,791, 412. 20 Amount that can be profitably expended in fiscal year ending June 30, 1903, for maintenance of improvement, in addition to the balance unexpended July 1, 1901.....

Submitted in compliance with requirements of sundry civil act of June 4, 1897, and of section 7 of the river and harbor act of 1899.

142, 970.64

Abstract of contract in force during the fiscal year ending June 30, 1901, for constructing north jetty at entrance to Coos Bay, Oregon.

Contractor.

Wakefield & Jacobsen

Date of con-
tract.

Date of ap-Date of begin- Date of expiproval. ning work. ration.

Aug. 15, 1899 Sept. 1,1899 Oct. 6, 1899 Sept. 2,1901

This contract was completed March 15, 1901. The rates paid for materials furnished and placed in the work by the contractors were printed in the Annual Report of the Chief of Engineers for 1900 (p. 4279).

COMMERCIAL STATISTICS.

Coos Bay is in the collection district of southern Oregon. Empire City, on Coos Bay, is the port of entry. The nearest light-house is at Cape Arago, on the south side and west of the entrance to the bay.

The commerce carried by vessels across the bar at the entrance to the bay during the calendar year 1900 follows.

1 Overpayment of 56 cents made on voucher No. 5, for June, 1900, refunded November 10, 1900.

List of vessels crossing the bar at the entrance to Coos Bay, Oregon, during the year ending

December 31, 1900.

Alice Blanchard... Steam..

Alliance...

Arcata..

4

Coquille River..

Del Norte

42

4

3

4

14

4

4

4

1

16

10

1

4

4

V V 4.

IMPROVEMENT OF COOS BAY, OREGON (DREDGING).

The project (completed) for dredging channels through shoals and removing other obstructions to navigation in Coos Bay, and the results of operations under the project, were printed in the Annual Reports of the Chief of Engineers for 1899 (pp. 3205–3207) and 1900 (pp. 642–644 and 4280-4283).

The project having been completed in fiscal year ending June 30, 1900, there were no operations during the past fiscal year. The unexpended funds in hand ($64.84) were returned to the Treasury July 18, 1900, and this is the final report for this work.

No deterioration of the improvement occurred during fiscal year ending June 30, 1901, excepting that slight shoaling has been noticed in the channel dredged in October-December, 1899, at the mouth of Coos River. The estimate for maintenance of the improvement of Coos River, Oregon, during the fiscal year ending June 30, 1901, includes the estimated amount required to restore this dredged channel.

IMPROVEMENT OF COOS RIVER, OREGON.

The project for obtaining a channel 50 feet wide, free of obstructing bowlders and snags, from the mouth of the river in Coos Bay to the head of tide on the North and South forks, and the results of operations in former years, are mentioned in the Annual Report of the Chief of Engineers for 1900 (pp. 644-645 and 4283-4284).

The amount expended in fiscal year ending June 30, 1901, was for placing a small quantity of lumber and rubblestone in a deflecting dike near the mouth of the river.

1Includes $64.84 in hand July 1, 1900.

Includes $64.84 returned to Treasury July 18, 1900.