Vízügyi Közlemények, 1973 (55. évfolyam)

4. füzet - Rövidebb közlemények és beszámolók

(13) FLOOD FORECASTING MODEL FOR THE ÁLTALÉR CATCHMENT By András, Salamin, Civ. Engr. (For the Hungarian text see pp. 105) In the territory ot Hungary one of the minor tributaires of the Danube is tbe Általér Creek, which feeds several minor reservoir lakes. The HYDRA II type automatic tele-reporting system has started operation in 1972, with several gages over the catchment area, which covers 457 sq.km. The gages are located at representative points of the catchment. The eight rain gages report at 10 minutes intervals while the characteristic stages of watercourses and lakes arc transmitted from 10 stations at 20 minutes intervals (Fig. I). The data are displayed visually and printed out in tabular form on a typewriter. The information and at the same time warning center is at Tata, at the Section Engineers headquarters on the shore of Lake Tata. The number of data transmitted in a rainy (flood) period by the tele-reporting system ranges from 700 to 1000, and the volume of data in a flood period (at least 4 days), including the code numbers of time and location pertaining to the data transmitted, may exceed the 10 000 order of magnitude. For preparing, or improving the forecast the time available is 20, or maximum 40 minutes owing to the high rate of runoff. For this reason it was found necessary to elaborate a forecasting method — which utilizes the maximum possible volume of information from the data delivered by the system, — which yields a forcast that owing to the uncertainty of the hydrological basic data can be improved successively, and — which offers opportunity lor improving the model using the data obtained during the operation of tbe tele-reporting system. A „manual" computation-based forecasting method is given in the paper for predicting along a profile the flood volume, flood peak and delay time in the catchment, as well as for improving the forecasts (Fig. 2). BRIEF PUBLICATIONS AND REPORTS 1. Ihrig, D., Civ. Engr.: 20 years oi scientific research on water management (For the Hungarian text see pp. 119) With the objective of performing scientific research into the fundamental theoretical problems of water management in Hungary, tbe Research Institute for Water Resources Development (VITUKI) was founded in June, 1952. On the activities at the Institute during its 20 years of existence a brief account has been presented in the introductory address to the Scicntific Session on Water Management, held in Budapest, on the 25th October, 1972. On this occasion several research institutes from Europe in contact with VITUKI, or cooperating with the Institute in research projects were represented by their leaders, or leading staff members who expressed their appreciation of the results achieved during the past 20 years. These representatives were W. Depczgnsky, Civ. Engr. (IGW, Warsaw, Poland), I. Dolijanich, Civ Engr. (Hidrometeorologia, Belgrade, Yugoslavia), I. C. Lebreton, Civ. Engr. (EDF, Chatou, France), S. Nikolich, Civ. Engr. („Jaroslav Cerny", Belgrade, Yugoslavia), I. E. Prins, ir. (Hydraulic Laboratory, Delft, Netherlands), A. Schimpf, Dipl.—

Ing. (Hydrographisches Zentralbüro, Vienna, Austria), A. Sikora. Civ. Engr. (VLJVH, Bratislava, Czechoslovakia), 7. Stachg, Dr. Ing. (PIHM, Warsaw, Poland), A. Tavoda, Civ. Engr. (VUIS, Bratislava, Czechoslovakia). Considering the activities at the Institute more in detail, not only a few spheres of water-related research are assigned to it on the grounds of the uniform and 10 Vízügyi Közlemények