Status of all investigations for flood control called for by flood-control acts and committee resolutions

IMPROVEMENT OF RIVERS AND HARBORS IN THE HONOLULU, T. H., DISTRICT

This district includes the Hawaiian Islands, Line Islands, Gilbert Islands, Marshall Islands, Midway Island, Wake Island, and Johnston Island, and such islands in the South Pacific Ocean lying between the one hundred fifty-ninth meridian of east longitude and one hundred eighth meridian of west longitude as may be under the jurisdiction of the United States.

District engineer: Col. Bartley M. Harloe, Corps of Engineers, to September 12, 1949; Col. F. H. Falkner, Corps of Engineers, September 13, 1949 to date.

Division engineer of the Western Ocean Division, Sausalito, Calif.: Col. Dwight F. Johns, Corps of Engineers, Acting Division Engineer, to July 9, 1949; Col H. J. Woodbury, Corps of Engineers, Division Engineer, July 10, 1949 to date.

Location. This harbor is on the southeast coast of the island of Kauai, about 100 nautical miles northwest of Honolulu. (See U. S. Coast and Geodetic Survey Chart No. 4111.)

Existing project. This provides for a rubble-mound breakwater about 2,150 feet in length along the reef which separates this bay into an inner and an outer harbor; for an entrance channel 35 feet deep with a minimum width of 600 feet and a length of about 2,400 feet; for a harbor basin 35 feet deep, 1,100 feet wide, and with an average length of about 2,000 feet protected by a filled area in addition to the protection afforded by the breakwater.

The plane of reference is mean lower low water. The tidal range between mean lower low water and mean higher high water is about 1.8 feet, the extreme tidal range being about 4 feet.

The estimate of cost for new work, revised in 1928, was $1,900,000. The latest (1948) approved estimate for annual cost of maintenance is $20,000.

The existing project was authorized by the River and Harbor Act of March 2, 1919 (H. Doc. 609, 62d Cong., 2d sess.). The latest published map is found in the project document.

Local cooperation.-Fully complied with.

Terminal facilities.-The Territory of Hawaii owns a concrete wharf, with concrete-steel transit shed and an open wharf extension thereof, on the southern side of a 47.5-acre tract reclaimed for terminal purposes. This wharf is operated by the Territorial Board of Harbor Commissioners, and is open to shipping on equal terms. Pipe lines for kerosene, gasoline, molasses, and water are available. Facilities for storing and conveying sugar in bulk consist of a 24,000-ton storage building and conveying belts of various widths. The facilities are considered adequate for existing

commerce.

Operations and results during fiscal year.-Maintenance operations consisted of a hydrographic survey started on June 26, 1950, with Government plant and hired labor, with regular funds, at a cost of $1,741.87, but was incomplete on June 30, 1950.

The total cost of maintenance for the year was $1,741.87, and the total expenditures were $1,052.22.

Condition at end of fiscal year.-The existing project was completed in July 1930. The controlling depth in February 1949 was 33 feet in the entrance channel and harbor basin, except for lesser depths in a strip 100 feet wide contiguous to piers 1 and 2.

The total cost of the existing project to June 30, 1950, was $1,488,011.83 from regular funds, of which $1,197,178.23 was for new work, and $290,833.60 was for maintenance. The total expenditures were $1,495,696.03.

In addition, $200,000 was contributed by local interests and expended for new work.

Proposed operations.-The balance unexpended on June 30, 1950, amounting to $2,920.67, will be applied for maintenance work consisting of the completion of a hydrographic survey. No work is scheduled for fiscal year 1952.

2. PORT ALLEN HARBOR, T. H.

Location. This harbor is located in Hanapepe Bay on the southern coast of the island of Kauai, about 110 nautical miles northwest of Honolulu. (See U. S. Coast and Geodetic Survey Chart No. 4108.)

Existing project.-This provides for a rubble-mound breakwater about 1,200 feet long on the east side of the bay; for the dredging of a harbor basin about 1,200 feet wide, 1,500 feet long, and 35 feet deep; and an entrance channel 500 feet wide and 35 feet deep.

The plane of reference is mean lower low water. The range of tide between mean lower low water and mean higher high water is 1.7 feet, and the extreme tidal range under ordinary conditions is 2.7 feet.

The estimated Federal cost for new work, revised in 1945, is $755,000; the estimated local cost is $200,000. The latest (1948) approved estimate for annual cost of maintenance is $18,000. The existing project was authorized by the following river and harbor acts:

1 Included in the Public Works Administration program, Sept. 6, 1933.

Local cooperation.-Fully complied with.

Terminal facilities.-The Territory of Hawaii owns a concrete wharf with a concrete-steel transit shed. The wharf is operated by the Territorial Board of Harbor Commissioners, and is open to shipping on equal terms. Pipe lines for oil and molasses and a sugar conveyor are available. The facilities are considered adequate for existing commerce.

Operations and results during fiscal year.-Maintenance operations consisted of mobilization in connection with a hydrographic survey to be accomplished with Government plant and hired labor which was incomplete on June 30, 1950, at a cost of $266.77.

The total cost of maintenance for the year was $266.77, and the total expenditures were $144.12.

Condition at end of fiscal year.-The portion of the existing project authorized prior to the modification adopted by the River and Harbor Act approved March 2, 1945, was completed in September 1935. The existing project was completed in May 1948. The controlling depth in February 1949 was 34 feet, except for lesser depths in small areas along the project lines.

The total cost of the existing project to June 30, 1950, was $821,775.06, of which $752,645.10 ($680,000 Public Works funds and