Explanation of the criteria for classification and numbering of components     C86.1.01
  (JUN 00)
Explanation of the dates on the component's description



1.   Purpose and objectives

     An installation for dropping floats to measure surface velocity of fast flowing rivers during floods when a current meter may not be used.

2.   Description

     A hydrometric cable way is used to support the float dropper which can hold from 10 to 15 floats. The floats can be dropped singly by turning a handle.

3.   Input

     Not applicable.

4.   Output

     Not applicable.

5.   Operational requirements and restrictions

     Can be used for rivers up to 500 m wide with surface velocities over 5 m/s.

6.   Form of presentation

     The design drawings.

7.   Operational experience

     Has been used successfully since 1964 at many of the hydrometric stations of Hepei province, China.

8.   Originator and technical support

     Hydrological Bureau of Hepei province, Shijia Zhuang City, China.

9.   Availability

     From the HOMS National Reference Centre for China.

10.  Conditions on use

     Cost of reproduction and mailing.


(First entered: 05 FEB 81

Last updated: 07 APR 00)