COMPILATION OF WATER POWER REPORTS 645 



will form a more economical addition to that which may already 

 be supplied by other plants; in other words, that the load factor 

 will be such as to improve the load factor of the other plants and 

 of the system in general. 



As a rule, it does seldom pay to develop a stream for the max- 

 imum stream-flow, and the question always arises as to how much 

 above the minimum stream-flow the plant should be built out for. 

 This also involves the problem of providing for water storage, if 

 such is feasible, or for auxiliary steam power. 



The cost estimates should be made with the greatest care to 

 leave undone no amount of work or experiment which will serve 

 to make certain the ground upon which the estimates are made. 

 After having estimated liberally for all known requirements, it is 

 well to provide additionally a substantial sum of money and so 

 arrange the finances that, if, contrary to expectations, the esti- 

 mates should be exceeded, sufficient funds remain in the treasury 

 for completing the development, as nothing is so discouraging, 

 and in many cases so disastrous, as a reorganization of the under- 

 taking at its very beginning. 



Every feature of the proposition should, of course, be investi- 

 gated from the legal point of view. This involves the real estate 

 flowage rights, rights of way, rights of occupying public high- 

 ways, etc. Such matters must be carefully attended to from the 

 beginning. 



A very complete general guide for the compilation of water 

 power reports and field data has been prepared by Mr. J. T. John- 

 ston, Hydraulic Engineer of the Water Power Department of 

 the Dominion of Canada, and is contained in its 1914 Annual 

 Report. This guide is of such completeness and usefulness that 

 it is reprinted in the following in full. 



GENERAL GUIDE FOR THE COMPILATION OF WATER POWER 

 REPORTS AND THE SECURING OF FIELD DATA 1 



The increasing number of inspections and field investigations 

 on the part of the field engineers of the Dominion Water Power 

 Branch, has rendered desirable the preparation of a uniform guide 

 upon which may be based the various reports forwarded to head 



1 From the 1914 Annual Report, Dominion Water Power Branch Depart- 

 ment of Interior, Canada. 



