THE VELOCITY OF THE RIVER FLOW

The aim of this paper is to contribute to a statistical solution of the estimation problem of a water flow. The most essential objective of hydrometry still lies, according to the widely recognized opinion, in a precise determination of velocity of the water flow in a particular river basin. In order to measure the water speed, a hydrometric propeller and Pitot's tube are frequently used. In the real situation we have measured the velocity of the points and the coordinates of these points in I places of the river basin. The aim of the measurement is to find the estimators of the streamline, the estimator of the maximal velocity on the streamline, the parameter k(1), k(2) and k(3), describing the decrease of the velocity according to the distance from the streamline in x, y and z direction. The model described above could be studied by the theory of linear models.