INLAND WATER SURVEY 365 
as a central hydrometric authority in the closest co-operation with the 
Rainfall Organisation and the Geological and Ordnance Surveys, and 
independent of any interest concerned with the use or control of water. 
This ideal implies that the authority, conducting a scientific research for 
the benefit of the community, should be financed by public funds and 
provided with necessary powers. The Committee consider that this should 
not prove to be an impossibility in view of the very different attitude now 
adopted by the Government towards scientific research compared with that 
of fifty years ago, provided the need is made sufficiently clear and the 
demand adequately supported by those directly concerned. 
11. Review of available data—With a view to exploring this position the 
Sub-committee appointed to collect data has obtained a number of memor- 
anda from members of the Committee and others representative of the 
various interests. These are annexed as an Appendix to this Report. 
A.—The bibliography indicates the very diverse sources which have to 
be consulted in order to obtain the limited amount of information on the 
subject at present published. 
B.—Contains brief particulars of the organisations for water survey in 
the United States of America, the Dominion of Canada, Switzerland and 
Italy. 
C.—Describes the existing organisation and the work of the British 
Rainfall Organisation. Sub-memorandum :— 
C (1).—Describes the rainfall information needed in relation to inland 
water survey and the arrangements necessary to obtain the data. 
D.—Deals generally with the problem of water survey as regards surface 
water ; the routine of the necessary measurements and observational work, 
and its application to the various water interests. Sub-memoranda :— 
D (1).—Summarises the present position in regard to public water 
supplies in England and Wales, and is supplemented by D (1) (a) in 
regard to the records of water supply authorities. 
D (2) and D (2) (a).—Give a detailed account of the catchment 
boards recently established, and are supplemented by D (2) (8), (c) and 
(d), which describe the gaugings taken in three typical instances. 
D (2) (e).—Describes the work as regards river gauging of a typical 
rivers board dealing with pollution. 
D (2) (f).—Describes the interest taken in the subject by the Motor 
Boat Association, representing the views of the owners of motor boats 
who use the rivers for pleasure purposes. 
D (3).—Indicates the water records kept by hydro-electric companies 
ae points out the importance to them of long-period records of river 
ow. 
D (4).—Explains the water requirements of the generating stations of 
authorised electricity undertakings, and is supplemented by D (4) (a) 
and (bd), giving particulars of the gaugings in two typical instances, and 
by a schedule of the flow of some fifty rivers. 
D (5).—Describes the water requirements generally with regard to 
canals and navigable rivers. 
D (6).—Deals with the question of river gauging in relation to water 
pollution from the point of view of river boards and fishery boards. 
E.— Contains suggestions as to observations and measurements necessary 
in regard to underground water, and describes the work of the Geological 
