ISSN 1058-3912
Electronic journal of the International Association
for Environmental Hydrology
On the World Wide Web at http://www.hydroweb.com
JEH Volume 6 (1998), Paper 5, June 1998
Posted June 19, 1998
ESTIMATING AREAL AVERAGE RAINFALL FOR AN UNGAGED MOUNTAINOUS BASIN
IN THE AMUR BASIN
Alexander Fedorovski
Department of Hydrology, Far Eastern State University, Vladivostok,
Russia
ABSTRACT
A rainfall interpolation method is proposed to estimate areal mean precipitation
of a mountainous 212 km2 basin. The objective was to use two permanent
rain gages located more than 50 km away. Rainfall data were obtained from
temporary rain gages in a 14-point network installed for four years in
the basin. The empirical relationships between the temporary and permanent
rain gages were used to predict rainfall totals at four most representative
points of the basin. The analysis of the influence of altitude on short-term
rainfall allows the part of the basin represented by each rain gage to
be defined. The data were used to calculate average basin rainfall. To
assess the performance of the rainfall interpolation method, fifty average
basin rainfall totals were predicted with a root mean square error of 8.45
mm and a correlation coefficient of 0.94. The direction of improving the
method based on basin coverage by the rainfall field is considered.
Reference: Fedorovski, A.; Estimating Areal Average Rainfall
for an Ungaged Mountainous Basin in the Amur Basin, Journal of Environmental
Hydrology, Vol. 6, Paper 5, June 1998.
Alexander Fedorovski
Department of Hydrology
Far Eastern State University
27 Oktabrskaja
690600 Vladivostok
Russia
E-mail : fedor@geo.dvgu.ru