Vízügyi Közlemények, 1965 (47. évfolyam)
4. füzet - Rövidebb közlemények és beszámolók
<121) Qt = flow of non-natural character completing continuously natural resources in the period under consideration (the sum of supply from storage, mine discharges, diversions from other catchments, etc.) 11 = sum of diversions over the catchment pertaining to a section on the watercourse 1 2 — sum of sewage and wastes discharges over the catchment pertaining to a section on the watercourse / = /!—/» = total use over the catchment pertaining to a section on the watercourse Arms of the waterbalance Qr + Qt (interpretation in Type I) Qdi% (interpretation in Type II) = for°uülfzation' a ^ Ö, (interpretation in Type 111) Qdii + Qt + h (interpretation in Type IV) Qm (interpretation in Type V) I (interpretation in Type I) Qm + I — Qt (interpretation in Type II and Type V Q, = waterdemand = j , _ Q ( (interpretation in Type III) I, (interpretation in Type IV) Waterbalmce indices F = Qh — Qi = free resources, or shortage — F Ш 0 = free resources F- = F ^ О = shortage F' — F — (Q + / 2) = the part of free resources originating from natural resources (distinguished only in Type IV) d = duration pertaining to value on the duration curve of values . _ Q]_ = theoretical degree of exploitation of resources available ~~ Q H for utilization A comparative evaluation of different profile types according to aspects defined by the author is summarized in Table I. On tlii. basis the uniform introduction of Types 1 and 111 in water resources development practice in Hungary is recommended. The preparation of Type I is suggested for all watercourse stretches included in the resources development records, whereas that of Type III for stretches only which are sufficiently known hydrologicallv and are of interest for resources development. A methodological example for the two types recommended for introduction is shown in Fig. 6, while an actual example for the more commonly applied Type I in Fig. 7. Items of the resources management profile should be filed in a tabular form; Table II corresponds to the profile shown in Fig. 7. Inclusion of water-quality dcda in the resources management profile is also considered in Ihe paper. Difficulties arising in this connection at present are listed, but a preliminary solution is suggested (Fig. 7). Part III of the paper deals with unsolved problems calling for basic research. Answer to, or more detailed information on, these problems would be urgent for the further development of the methodology of water balances. Research must be conducted with a primary view to domestic utilization, yet relying on experience gained at home active participation must be initiated in the development of a uniform methodology of international waterbalance studies, since one of the most important prerequisite of international water resources development is the general acceptance of suitable international methods.
