MULTIPLE PURPOSE RIVER DEVELOPMENT XI 



11. Debt Position of Families with Incomes Over $5,000 104 



12. Percentage Breakdown of Nonwage Income in Upper- 

 Income Classes 105 



13. Percentage Breakdown of Income from Assets in Upper- 

 Income Classes 105 



14. Rates of Return Earned by Households, Adjusted for 

 Taxes by Upper-Income Classes and Form of Property 108 



15. Summary of Derivation of Interest Rate Applicable to 

 Proportionate Reduction of Personal Income Tax Pay- 

 ments 110 



16. Derivation of Interest Rates Applicable to the Shares for 

 Wages and Salaries and Consumption of a Reduction in 



the Corporation Income Tax Ill 



17. Derivation of Interest Rate Applicable to the Share of 

 Corporation Income Tax Cut Benefiting Dividend 

 Recipients 113 



18. Summary of Derivation of Interest Rates Applicable to 

 Proportionate Reduction of Corporation Income Tax 

 Payments 116 



19. Reservoir Projects Included in the Main Control Plan of 

 the Corps of Engineers for Columbia River and Tribu- 

 taries 140 



20. Comparative Costs of Hells Canyon High Dam and Three 

 Low Dams, Assuming Federal Development and Imputed 

 Interest Rate of 2.5 Per Cent 144 



21. Average Annual Value of Project Services of Hells 

 Canyon High Dam and Three Low Dams, Assuming 

 Public Development 146 



22. Comparative Costs of Hells Canyon High Dam and Three 

 Low Dams, Assuming Federal Development and Im- 

 puted Interest Rate of 5.5 Per Cent 149 



23. Average Annual Value of Project Services of Brownlee 

 and Medium-Height Hells Canyon Dams, Assuming 

 Public Development 150 



24. Comparative Costs of Brownlee and Medium-Height 

 Hells Canyon Dams, y\ssuming Public Development and 

 Different Interest Rates 151 



25. Comparative Costs of the Two-Dam and Three-Dam 

 Alternatives, Assuming Idaho Power Company Construc- 

 tion and Operation 154 



