Abstract
Water measuring structures/devices generally used in Pakistan are subject
to the availability of standard tables, graphs, or charts. These tables and charts are
developed for some standard measuring structures. Alteration in the standard
dimensions during construction of the stmicture may introduce considerable error
in estimating the available discharge. A study was conducted for calibrating the
locally constructed devices and for comparing their coefficients of calibration with
the standard. The study revealed that the value of calibration coefficient differed
significantly from their standard value, emphasizing thereby the need for calibrat-
ing the measuring devices before use under local field conditions.
