TY  - JOUR
T1  - Estimating Evaporation from Dam-Reservoirs in Arid and Semi Arid Regions Case of Algeria
AU - Meziani, Assia AU - Remini, Boualem AU - Boutoutaou, Djamel 
JO  - Journal of Engineering and Applied Sciences
VL  - 15
IS  - 9
SP  - 2097
EP  - 2107
PY  - 2020
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2020.2097.2107
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2020.2097.2107
KW  - Water resources
KW  -evaporation
KW  -dam-reservoir
KW  -arid region
KW  -semi-arid region
KW  -Algeria
AB  - Evaporation is the main process of the water
cycle and it’s considered as major problem reducing the
water reserves over the world, especially in arid countries.
The most important climatic factors affecting the
evaporation process are temperature, wind speed,
humidity, solar radiation and atmospheric pressure.
Several researchers have studied the evaporation and have
given models or approaches to estimate the evaporation
rate based on available meteorological data. These models
are divided to five categories: water budget, energy
budget, mass transfer, combination methods and
evaporation pans. We mention that, the measurement of
evaporation by using pans over the water bodies still a
classical method generating measurement errors. The
objective of our research is to elaborate empirical model
to estimate evaporation from dam-reservoirs located in
semi-arid and arid regions, for that five damreservoirs
have been chosen: Foum El-Gherza dam,
Gazelles Fountain dam, Foum El-Guiess dam, Djorf-
Torba dam and Brezina dam. We mention that the
empirical developed model is the result of a
combination of two models proposed by Blaney-
Criddle and Priestley-Taylor (modified). The obtained
results by the proposed model show very good
performances for the five dam-reservoirs: correlation
coefficient is >0.84, the ratio of the rank sum (RSR) is
≤0.54 and the Nash-Sutcliffe criterion (NSE) is ≥0.83.
Moreover, the proposed model is compared by
measurement evaporation and the following models:
Priestley and Taylor, Boutoutaou, Ivanov, DeBruin,
Hamon, Blaney-Criddle, Ryan-Harleman and Xiao.
ER  -