Fresenius Environmental Bulletin, cilt.30, sa.6, ss.7243-7254, 2021 (SCI-Expanded)
Utilizing
the potential of rivers for energy, irrigation and water supply is possible
with the design of the structures to be built, and measured flow data are
needed for planning. However, the flow data of small streams are not known,
generally because there are no flow observation stations in sub-basins. One of
the software developed to predict flow data in small streams is the Hydrologic
Engineering Center Hydrologic Modelling System (HEC-HMS). In the model, the parameters
of the proxy basins that have a flow observation station are calibrated and
transferred to the sub-basins where the flow will be estimated. In this study,
the flow data of eight sub-basins without observation stations within the
borders of Batman province were estimated with Baskoy and Celebiyan parameters
selected as proxy basins. The flow data estimated from the model were compared
with the measurements obtained from the floats and pitot tube methods, which
are the flow discharge estimates based on the velocity measurement, which are
theoretical methods. The simulated values of the proxy basin flows are
evaluated using the Nash Sutcliffe (NSE) and Relative Volume Error (RVE)
criteria. Calibration (Baskoy NSE= 84%, RVE= - 24%; Celebiyan NSE= 72%, RVE=
9.7%) and verification (Baskoy NSE= 83%, RVE= - 14%; Celebiyan NSE= 71%,
RVE=0.65%) shows that the measured basin flow and peak flows for periods can be
estimated as well as possible. When the results and suggestions obtained from
this study are put into practice, significant contributions will be made to the
national economy by ensuring efficient use of all small rivers in other basins,
particularly the Batman basin.