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Ohio River Basin contained in the Flood Control Acts approved June 28, 1938 and August 18, 1941.

The estimated cost of new work, revised in 1943, is $4,641,000.

Local cooperation.-Section 2 of the Flood Control Act approved June 28, 1938, applies.

Operations and results during fiscal year.New work.—Contract plans and specifications for the outlet works operating house were completed and contract awarded; some preliminary work, consisting of operating manual and miscellaneous engineering work, was performed. In addition, plans and specifications for the damtenders' dwellings and permanent service bridge, access road, landscaping and miscellaneous appurtenances were completed. No advance planning was done for the public sanitary building and parking area pending further action on possibility that reservoir area will be turned over to the State of Ohio for recreational development.

The contract for the embankment and outlet works was completed. Work completed consisted of final dressing of rock over certain areas of the dumped rock blanket on the upstream face of the dam; grading topsoil to final slopes and seeding in all required areas; and erection of the temporary timber service bridge from the dam to the intake tower. General cleanup was effected at the dam site and corrective measures were applied for the correct operation of the 4- by 8-foot sluice gates.

Construction of the outlet works operating house was started May 28, 1945, and was under way. Work performed to date consisted of drilling holes through the existing concrete for the lightning protection system, placing door and window frames, laying of brick to an elevation of 13 feet above the operating floor, and placing embedded conduit run for the entrance lights.

Clearing operations in the reservoir area were completed by hired labor on March 1, 1945. Some work on miscellaneous appurtenances to the dam was performed by hired labor and certain machinery and equipment purchased. Some utility settlements were made for relocations performed by the owning agencies. A partial settlement was made to the State of Ohio for relocation of a highway under agreement. All utility work in connection with the relocation of Ohio State Route No. 5 was completed. Grading and construction of drainage structures for relocation of Ohio State Routes 305 and 5 at the dam site was started on July 17, 1944, and completed on June 10, 1945 under contract.

In connection with acquisition of land in the reservoir area, flowage easements over 121.83 acres were acquired during the year.

Maintenance (operating and care).--The reservoir was operated effectively for low water regulation and necessary repairs made to the grounds and plant. No damaging floods occurred on the Mahoning River during the year. The run-off from the rises which occurred during the floods on the Ohio River was all stored and held for subsequent release. Results of reservoir operations

in the reduction of flood stages at Wheeling, W. Va., in combination with other units in the reservoir system are shown in the corresponding paragraph for Tygart River Reservoir. The reservoir was operated for low-water regulation as required. The usable storage in the reservoir on July 1, 1944, was 37,000 acrefeet. This impounded water was released during the summer and fall at rates varying from 5 to 200 second-feet to improve flow conditions in the Mahoning River and to keep the river water at Youngstown, Ohio, as cool as possible. The minimum elevation of the reservoir surface occurred on November 16, 1944, when the storage had been depleted to 6,700 acre-feet. During the winter and spring the storage was replenished and the reservoir surface reached a maximum elevation for the year, 15.6 feet above minimum pool on the last of May. This represents an impoundment of 58,100 acre-feet of usable storage, or about 56 percent of the capacity of the reservoir. Some storage was released for the lowwater regulation of the Mahoning River during June with the flow varying from 1 to 130 second-feet. On June 30, 1945, the usable storage remaining in the reservoir was 55,000 acre-feet.

The total costs were $917,641.97, of which $906,858.72 was for new work and $10,783.25 for maintenance. The total expenditures were $1,107,297.36.

Condition at end of fiscal year. The dam is complete and is in operation for flood control and low water regulation purposes in the industrialized Mahoning and Beaver Valleys, below. All work necessary to the final conclusion of the acquisition of land in the reservoir area is approximately 90 percent complete. The total acreage involved has been acquired and consists of 11,213.98 acres in fee simple and flowage easements over 93.93 acres. All clearing work in the reservoir area is complete. Work remaining to be done consists of preliminary work; certain miscellaneous appurtenances to the dam; completion of the outlet works operating house; completion of all work in connection with final conclusion of land acquisition; making final settlement for highway relocation being performed by the State of Ohio under agreement; making settlements for certain utility relocations performed by the owning agencies; construction of damtenders' dwellings and storage building; landscaping, permanent service bridge, and entrance road to dwellings. Construction of public sanitary building and parking area has been deferred pending further action on possibility that reservoir area will be turned over to the State of Ohio for recreational development.

The total costs to the end of the fiscal year, all from regular funds, were $3,661,460.61, of which $3,649,224.23 was for new work and $12,236.38 for maintenance. The total expenditures were $3,638,066.02.

Proposed operations. The balance unexpended on June 30, 1945, will be applied as follows:

$23, 394. 59

$6, 785.00

20,000.00

Accounts payable, June 30, 1945
New work:

Preliminary work by hired labor (July 1, 1945,

to June 30, 1946) Complete construction of embankment, outlet

works, and appurtenances by contract (July

1, to July 31, 1945) Construction of outlet works operating house,

by contract (July 1, to Sept. 30, 1945) Partial completion of appurtenances by hired

labor (July 1, 1945, to June 30, 1946) Complete acquisition of land (July 1, 1945, to

June 30, 1946)
Complete highway settlements (July 1, 1945,

to June 30, 1946).
Complete utility settlements (July 1, 1945, to

June 30, 1946) Available for other items

22, 255.00

19, 000.00

64, 735. 77

34, 600.00

20, 400.00 513, 000.00

700, 775. 77

Total, new work
Maintenance (operating and care of dam):

Operation
Ordinary maintenance and repairs
Improvement and reconstruction

Total, maintenance

17, 280.00

3, 600.00 11, 183. 62

32, 063. 62

Total for all work

756, 233. 98 The project will be completed with available funds. The additional sum of $27,200 can be profitably expended during fiscal year 1947, as follows:

Maintenance (operating and care of dam):

Operation
Ordinary maintenance and repairs
Improvement and reconstruction

Total, maintenance

$18, 200.00

4,000.00 5,000.00

27, 200.00

Cost, and financial summary
Cost of new work to June 30, 1945
Cost of maintenance to June 30, 1945

$3, 649, 224. 23

12, 236, 38

3, 661, 460. 61

23, 394. 59

Total cost of permanent work to June 30, 1945 Minus accounts payable June 30, 1945

Net total expenditures Unexpended balance June 30, 1945

Total amount appropriated to June 30, 1945

3, 638, 066. 02

756, 233. 98

4, 394, 300.00

Fiscal year ending June 30

1941

1942

1943

1944

1945

$ 12, 430.32 $2,699, 935. 19

1, 453. 13

$906, 858. 72

10, 783. 25

Cost of new work
Cost of maintenance

Total cost
Total expended.
Allotted..

42, 430.32

2. 701, 388. 32

917, 611.97 1, 107, 297.36

30, 755. 71 2,500,012. 95
40,000.00 4,391, 700.00

-37, 400.00

$1, 900, 931. 34

Balance unexpended July 1, 1944
Amount allotted from War Department Civil

Appropriation Act approved Apr. 28, 1942-- $36, 000.00
Amount allotted from War Department Civil

Appropriation Act approved Mar. 31, 1945_- 12, 000.00

48, 000.00

[blocks in formation]

85, 334. 67

Unobligated balance available June 30, 1945
Amount that can be profitably expended in fiscal year ending

June 30, 1947 for maintenance ?

27, 200.00

1 Exclusive of available funds.

18. OHIO RIVER BASIN, PITTSBURGH, PA., DISTRICT Location.--The works covered by this project are a series of levees, flood walls, channel improvements, and reservoirs in the Ohio River Basin within the confines of the Pittsburgh, Pa., district.

Existing project.The Flood Control Act approved August 28, 1937, authorized the construction of levees, flood walls, and drainage structures for the protection of cities and towns in the Ohio River Basin, the projects to be selected hy the Chief of Engineers with the approval of the Secretary of War, in accordance with House Flood Control Committee Document No. 1. Seventy-fifth Congress, first session, at a cost not to exceed $24,877,000 for construction, which amount was authorized to be appropriated for this purpose.

The Flood Control Act of June 28, 1938, approved the general comprehensive plan for flood control and other purposes in the Ohio River Basin as set forth in House Flood Control Committee Document No. 1, Seventy-fifth Congress, first session, with such modification thereof as, in the discretion of the Secretary of War and the Chief of Engineers, may he advisable, and for initiation and partial accomplishment of the plan, authorized $75,000,000 for reservoirs and $50,300,000 for local flood-protection works. the individual projects to be selected and approved by the Chief of Engineers subject to the provision that the authorization shall include the diversion of Cache River above Cairo, Ill., and the protection of the area north of the Cairo drainage district by levees, at an estimated cost of $2,000,000.

The Flood Control Act approved August 18, 1941, authorized the sum of $45,000,000 for the further prosecution of the comprehensive plan approved in the act of June 28, 1938, for the Ohio River Basin, modified to include the Allegheny Reservoir project in accordance with the recommendation of the Chief of Engineers in House Document No. 300, Seventy-sixth Congress, first session.

In addition to previous authorizations, the Flood Control Act approved December 22, 1944, authorized the sum of $70,000,000 for the prosecution of the comprehensive plan approved in the Act of June 28, 1938, as modified by the act approved August 18, 1941, for the Ohio River, including additional projects in tributary basins.

The following is a list of the individual projects considered in the comprehensive plan within the confines of the Pittsburgh district:

Local protection projects

[graphic]

area, NY
Dillonvale and Adena on Short Creek, Ohio.
Latrobe on Loyalhanna Creek, Pa.
Ridgway, Johnsonburg, Saint Marys, and
Brockway and vicinity, Pa.

Channels
Channel
Reservoir, channels,

levees and drain-
age facilities.

158, 200

112, 500 6, 276, 900

27, 800

5, 200 117, 100

186, 000

117, 700 6,394,000

1 Completed.
* Reported in detail in Annual Report for 1941.
: Reported in detail in an individual report.

672607-46-pt. 1, vol. 2-28

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