Abstract:
Water is the key of development and stability
of any region. Under climate change condition, water
systems are less reliable and more vulnerable. In this study,
performance of Saline reservoir in Odisha, India has been
evaluated under the climate change condition. The study
mainly focused on the trend analysis for identified the
temporal changes in precipitation and inflow time series
using Mann–Kendall test, quantification of inflows to
reservoir using ARNO model and performance evaluation
of reservoir using WEAP model under climate change
condition. In the results, it has been observed that there is
no significant trend for annual, seasonal and for any
monthly rainfall. Variation in precipitation shows that rainy
days are decreasing whereas number of intense rainy days
([100 mm) are increasing. A significant rising trend with
test statistic value of ?3.18 is observed for daily inflow
series at 95 % confidence level. Evaluation of inflow to
reservoir, ARNO model shows that the change in simulated
flow is directly proportional to the change in rainfall. In
order to 25 % Change, decrease or increase in rainfall
amount resulted in equal amount of decrease or increase in
the inflow. Performance evaluation of reservoir using
WEAP model shows that if inflows reduced by 20 % there
would be a decrease in supply reliability and it would not
be possible to increase supplies. Reducing live storage by
10 % influence supply delivered in May and June, but
again has little impact on the rest of the year.
