INLAND WATER SURVEY 403 
9. CONDITIONS AS TO APPOINTMENTS. 
There are, of course, various other directions from which the data can 
be collected, and the machinery in this connection may be summarised as 
(i) Officials of catchment boards and waterway authorities. 
(ii) M.B.A. and other boatmen. 
(iii) Angling clubs. 
(iv) Rowing and motor boat clubs. 
(v) Specially engaged surveyors. 
10. FINANCE (not abstracted). 
11. AVAILABILITY OF DATA. 
- The Area Superintendents would be expected to have available, and in 
their custody, the data from time to time forthcoming as the result of the 
surveys, while tabulated information from the whole of the country would 
be maintained at and available from the headquarters of the central 
authority in London. 
12. CONCLUSION. 
It is appreciated that the scheme as put forward by the M.B.A. is but 
in the nature of skeleton framework upon the broad conception of which 
much consideration of detail requires to be given if the proposal so suggested 
commends itself as worthy of further exploration. 
The Grand Council of the M.B.A. would desire to assure the Committee 
of the British Association of its entire sympathy with the objects which its 
inquiry is designed to achieve, and in acceding to the request of the British 
Association to put forward its views the M.B.A. does so in the earnest desire 
to provide a constructive contribution to the question under consideration. 
While it feels that it can, if thought fit, readily adapt within its present 
constitution the machinery necessary to enable it to undertake the important 
functions of a central authority such as is envisaged, it would equally 
emphasise the fact that, were it so desired, it would be ready to co-operate 
fully in the information and working of a separate central authority, to 
afford to such authority every assistance in its power, and to accord to it the 
hospitality of its office and organisation, and, in short, to do everything in 
its power to collaborate in the important work of inland water survey which 
it realises must, sooner or later, be adequately dealt with. 
In conclusion, the M.B.A. would again express its appreciation for the 
opportunity of expressing its views, accorded to it by the courtesy of the 
British Association. 
(Signed) C. Horton, 
Secretary, Motor Boat Association. 
SuB-MEmMorRANDuUM D (3). 
WATER RECORDS KEPT BY HYDRO-ELECTRIC 
COMPANIES. 
By W. T. Hatcrow. 
1. In the absence of records of river flow, all large hydro-electric schemes 
in Great Britain have been designed on an estimated yield of water from the 
catchment areas, based on rainfall records. Many millions of pounds 
have been spent on these undertakings, and it would have been of great 
assistance. had long-period records of river flow been available for the 
engineers. Under present conditions there is an element of uncertainty in de- 
termining the economic capacity of such unalterable works as pressure tunnels, 
