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In addition to ordinary maintenance and repairs to structures and plant, 3 acres of ground were cultivated under contract and fertilized and seeded by hired labor to prevent future erosion below the dam. The Ohio River at Pittsburgh was above flood stage three times during the year and on four other occasions, rises occurred which crested between 20 and 25 feet. The three largest floods, on February 28, March 4 and March 7, 1945, crested at 27.7, 26.9 and 33.4 feet, respectively. Storage was made during each of these floods but as the intervals between floods were short, total release of the impounded water could not be effected until after the last flood. The reservoir water surface reached levels 35.2, 25.7 and 45.6 feet above the minimum pool on February 28, March 5 and March 8, 1945, respectively. The highest level reached during the year, 1389.6 on March 8, represents an impoundment of 42,400 acre-feet or about 17 percent of the capacity available for flood control purposes. Results of reservoir operations in the reduction of flood stages at Pittsburgh, Pa., and Wheeling, W. Va., in combination with other units in the reservoir system are shown in the corresponding paragraph for Tygart River Reservoir. During the remainder of the year, the reservoir surface was maintained at or near the minimum pool for the purpose of keeping US Route 40, a main highway which at present crosses the reservoir, from being flooded.

The total costs were $96,042.94, of which $79,467.49 was for new work and $16,575.45 for maintenance. The total expenditures were $109,515.76.

Condition at end of fiscal year.The dam is complete except for completion of spillway lining, and the reservoir is in operation for flood control, navigation aid and pollution abatement purposes. For flood prevention, the reservoir is operated as a unit in the reservoir system designed for the protection of Pittsburgh and the reduction of flood heights in the upper Ohio Valley, generally. Clearing of the reservoir area is fully complete. All work necessary to the acquisition of land is approximately 96.5 percent complete. The total acreage involved has been acquired and consists of 3,914.29 acres in fee simple. Work remaining to be done consists of preliminary work; making settlements relative to utilities and highways affected by the reservoir; work in connection with final conclusion of land acquired; completion of the spillway lining; construction of damtenders' dwellings, public sanitary building and storage building; installation of water supply system for dwellings and public sanitary building; and completion of landscaping, surfacing of access road and parking area, and certain miscellaneous appurtenances to the dam.

The total costs to the end of the fiscal year, all from regular funds, were $7,691,558.43, of which $7,660,056.47 was for new work and $31,501.96 for maintenance. The total expenditures were $7,672,032.51.

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

$19, 525. 92

$10, 560.00

12, 225.00

60, 033. 78

Accounts payable, June 30, 1945
New work:

Preliminary work by hired labor (July 1, 1945,

to June 30, 1946) 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)
Complete other new work

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

Operation
Ordinary maintenance and repairs
Improvement and reconstruction

316, 000.00

37,000.00 311, 900.00

747, 718. 78

$19, 350.00

2,500.00
3, 348, 04

Total, maintenance

25, 198. 04

Total for all work

792, 442. 74 The additional sum of $1,192,200 can be profitably expended during the fiscal years 1946 and 1947 ($573,000 of this total in 1946) as follows:

New work:
Water supply system for dwellings and public sanitary build-
ing by contract (Aug. 1 to Sept. 30, 1946)

$28, 800 Construction of storage building by contract (July 1 to Aug. 31, 1946)

2, 400 Complete remaining portion of spillway lining by contract (July 1, 1946, to June 30, 1947)

786, 500 Complete appurtenances by hired labor (July 1, 1946, to June 30, 1947)

7, 700 Construction of damtenders' dwellings by contract (July 1 to Dec. 31, 1946)

37, 500 Construction of public sanitary building by contract (July 1 to Sept. 30, 1946)

15, 100 Surfacing access road and parking area by contract (July 1 to Sept. 30, 1946)

10, 500 Landscaping by hired labor, (Aug. 1 to Oct. 31, 1946)

16, 500 Other remaining work

307, 200 Total, new work

1, 192, 200 The further sum of $27,000 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

$21, 500

3,000 2, 500

$27,000

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

$7, 660, 056. 47

31, 501.96

7, 691, 558. 43

19, 525. 92

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

7, 672, 032. 51

792, 442. 74

8, 464, 475. 25

[blocks in formation]

29, 808. 29

1, 192, 200.00

Unobligated balance available June 30, 1945
Amount (estimated) required to be appropriated for com-

pletion of existing project'
Amount that can be profitably expended in fiscal year ending
June 30, 1947:

For new work?
For maintenance

1

1, 192, 200.00

27, 000.00

Total 1

1, 219, 200.00

1 Exclusive of available funds.

.

16. BERLIN RESERVOIR, OHIO RIVER BASIN, OHIO Location.—The dam site is located on the Mahoning River about 73 miles above its confluence with the Shenango River. It is about 10 miles above the existing Milton Reservoir Dam and 35 miles upstream from Warren, Ohio. The reservoir is located in Portage, Mahoning, and Stark Counties, Ohio. (See U. S. Geological Survey charts for Warren, Ravenna, and Alliance, Ohio.)

Existing project.—This provides for the construction of a reservoir dam with a partially controlled, concrete, gravity, center spillway flanked by rolled-fill abutment sections joining the valley sides. The dam is 5,750 feet long at the top, rises 95 feet above the stream bed, and provides for the gross controlled storage of 91,200 acrefeet of water from a tributary drainage area of 250 square miles. Of this storage, 1,800 acre-feet are in permanent storage and the remaining 89,400 acre-feet are available for flood control and water supply purposes in the industrialized Mahoning Valley below. The project was selected for construction under the general authorization for the 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 $7,250,000.

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

Operations and results during fiscal year.-New work. Some preliminary work consisting of a topographic survey of the reservoir pool area, “as built” revision of plans, preparation of operating manual, and miscellaneous engineering work was performed. In addition, plans and specifications for stilling weir, damtenders' dwellings, and surfacing of access road were completed. Advance planning for the public sanitary building and parking area was suspended pending final action on proposed agreement with the State of Ohio for construction and operation of these features by the State.

Clearing operations in the reservoir area were continued by hired labor whenever reservoir storage conditions permitted. Approximately 55 acres were cleared during the year. Hired labor forces also accomplished the installation and testing of a gasoline electric standby unit with tank at the dam.

All work in connection with agreements and settlements for highways affected by the reservoir was concluded. Work on negotiations and agreements was continued relative to utility alterations and relocations and some utility settlements were made. In connection with the acquisition of land in the reservoir area, negotiations were continued for acquisition of flowage easements.

Maintenance (operating and care).-The reservoir was operated effectively for low-water regulation and necessary repairs were made to operators' temporary quarters and grounds throughout the fiscal year. In addition to ordinary repairs to structures and plant, the downstream face and the top of the right embankment was seeded under contract. 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. This reservoir in conjunction with Milton Reservoir was operated for lowwater, regulation as required. The usable storage in the two reservoirs on July 1 was 75,000 acre-feet. The impounded water was released, at rates varying from 100 to 270 second-feet to improve flow conditions in the Mahoning River and to keep the temperature of the river water at Youngstown, Ohio, as cool as possible. By February 13, 1945, the usable storage had been depleted to 5,400 acre-feet, but the period of deficient stream flow was over and the storage period could be started. During the next 242 months the low-water storage was fully replenished and some excess water was released. The highest water surface level reached during the year in Berlin Reservoir was 51.5 feet above minimum pool on May 19. This represents an impoundment of 86,500 acre-feet, or about 97 percent of the usable capacity of the reservoir. The maximum usable storage in Berlin and Milton Reservoirs of 112,500 acre-feet occurred on May 21, 1945.

Release of storage for regulation of Mahoning River discharges was required during June with the flow varying from 300 to 340 second-feet. On June 30, 1945, the combined usable storage remaining in the two reservoirs was 87,300 acre-feet.

The total costs were $154,421.72, of which $127,156.55 was for new work and $27,265.17 for maintenance. The total expenditures were $153,971.82.

Condition at end of fiscal year.—The dam is complete and the reservoir is in operation for flood control and low-water regulation purposes in the industrialized Mahoning Valley below. Approximately 95 percent of clearing work in the reservoir area has been completed. All work necessary to the acquisition of land in the reservoir area is approximately 92.5 percent complete. To date, about 99.7 percent of the total acreage involved has been acquired and consists of 6,917.25 acres in fee simple and flowage easements over 1,052.72 acres, the former being fully complete. Work remaining to be done consists of preliminary work, including the completion of preparation of plans and specifications for the public sanitary building and parking area; completion of clearing in the reservoir area by hired labor when storage conditions permit; making settlements relative to utilities affected by the reservoir; concluding the acquisition of land; construction of a concrete stilling weir below the dam, damtenders' dwellings and storage building; and completion of landscaping, paving entrance road and surfacing of access road and certain miscellaneous appurtenances to the dam. Construction of a 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 $5,864,960.61, of which $5,808,447.51 was for new work and $56,513.10 for maintenance. The total expenditures were $5,856,060.58.

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