Table 7. Major Flood-Control Projects Under Construction 30 June 1955-Con.

Maintenance. Maintenance and operation activities were conducted on 114 flood-control projects during the fiscal year at a cost of $4,056,700.

3. MULTIPLE-PURPOSE (POWER) PROJECTS

The importance of multiple-purpose projects in relation to the overall activities of the Corps of Engineers continued to increase during the fiscal year as a result of the large construction program relating to these projects currently underway and the completion and placing in operation of primary-purpose features at several projects. These projects have been designed to serve primarily in the interest of navigation or flood control and the production of hydroelectric power, although frequently other benefits, such as irrigation, pollution abatement, water supply, and recreation are also realized.

The inclusion of power features in conjunction with other project features has often resulted in an enhancement of their economic value. Pertinent information on the power aspects of multiple-purpose projects is contained in section 4, Hydroelectric Power Production.

Construction. During the year construction operations were carried out on 23 multiple-purpose projects, of which one was completed for full beneficial use as shown in table 8.

During the year work was not initiated on any multiple-purpose projects.

There were 22 multiple-purpose projects under active construction at the end of the fiscal year. Of these, there were 15 projects with

some or all primary project features in useful operation at the en of the year. These projects are listed in table 9.

Table 8. Multiple-Purpose Projects Completed for Full Beneficial Use During Fiscal Year 1955

*These primary purposes completed for beneficial use prior to fiscal year 1955.

Table 9. Multiple-Purpose Projects Under Construction With Some or All Primary Project Features in Useful Operation 30 June 1955

*Projects operated for these primary purposes at the beginning of and throughout fiscal year 1955.

Of the multiple-purpose projects under active construction at the end of the fiscal year, seven projects had no primary-project features in operation. They are shown in table 10.

In connection with the Table Rock project, it is significant that the dam contract was awarded at a saving of $10 million and that the bid of an English firm was sufficiently low on the turbines that it was awarded the contract. Lengthy negotiations with the Missouri State Highway Commission culminated in an agreement to relocate existing highways.

Table 10. Multiple-purpose Projects Under Construction and Not Operating 30 June 1955

Maintenance. Operation and maintenance activities were conducted on 28 multiple-purpose projects during the fiscal year at a cost of $9,919,500.

4. HYDROELECTRIC POWER PRODUCTION

Great strides continued to be made during the fiscal year in accomplishing the program of constructing and operating hydroelectric power production facilities authorized and operated in connection with navigation and flood control projects. Increased generating capacity added was exceeded by that added during only one previous year and power production was very substantially above any previous year.

At projects constructed and operated by the Corps of Engineers, 12.64 billion kilowatt-hours were generated during the fiscal year. This represents approximately 11.7 percent of the hydroelectric power produced and 2.5 percent of the total production by all sources for the Nation's utility systems.

The Corps of Engineers, with one minor exception, is not invol in the distribution and sale of the power produced at the projec since under the various laws the power produced and available sale is delivered to the control of the Secretary of the Interior for d position at rates approved by the Federal Power Commission.

Installed capacity. Additional generating capacity of 643,400 1 representing 34 percent of the hydroelectric capacity or 4.3 percent the total generating capacity added to the Nation's utility syster during the fiscal year was installed by the Corps of Engineers in thr existing projects and two new projects as shown in table 11.

Table 11. Generating Capacity Placed in Service During Fiscal Year 1955

This large block (table 11) of additional generating capacity contributed greatly to alleviating power shortages, particularly in the critically deficient northwest region and where 443,400 kilowatts of additional capacity from the McNary, Lookout Point and Albeni Falls projects were made available to the Northwest Power Pool during the fiscal year. Making available a relatively large block of power from the Fort Randall project will have a very favorable effect on the power supply situation in the Missouri Valley. The additional generating capacity constructed and placed in operation increased the total generating capacity in service at the end of the fiscal year at projects constructed and operated by the Corps of Engineers to 3,160,200 kilowatts located in 22 projects shown in table 12. As of the end of the fiscal year, the generating capacity operated by the Corps of Engineers represented 2.9 percent of the total generating capacity and 13 percent of the hydroelectric generating capacity supplying utility systems in the United States.

Hydroelectric power production. Improved water supply conditions plus the additional generating capacity installed in existing and new projects permitted the generation of 12.64 billion kilowatt hours or an increase of 42 percent as compared to the prior fiscal year. Chart I indicates the trend in power generation at Corps of Engineers' projects. Additional capacity under construction. At the end of the fiscal year, the Corps of Engineers had under construction additional generating capacity of 514,200 kilowatts at three operating projects as shown in table 12, and 3,053,000 kilowatts at 11 new projects or a total of 3,567,200 kilowatts currently under construction as shown by table 13.