Spatial optimization of hydrologic monitoring networks on rivers

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Efficient water resources planning and management must take into account multiple users,
criteria, and objectives. Due to this complexity of recent water management problems and
solutions, better analytical tools and methodologies are required. Accomplishment of this
requirement depends essentially on information gathered on natural and environmental
processes so the success of sustainable water resources management depends on
monitoring activities.
Many countries have developed extensive streamflow gauging networks. Such a
development has led to accumulation of significant amounts of data to eventually raise
questions whether they produce expected information, and whether monitoring should be
continued. These questions have led monitoring agencies to assess their current networks
for efficiency and cost-effectiveness.
The study is initiated in respect of above questions to examine various methodologies to
assess existing networks. The study also aims to develop some guidelines for consolidation
of a monitoring network. The investigation has resulted the use of multi criteria decision
making methodologies (MCDM). Consequently, the method of stream orders, a dynamic
programming approach and two MCDM methods are presented. The proposed study is
particularly focused on the assessment of the “performance” of existing networks. The
introduced methods are applied to Gediz River Basin and the results are evaluated with
respect to the ten operational and three non-operational stations. It is concluded that nonoperational
three stations are the ones to be removed from the network. Additionally the
advantages and disadvantages of the presented methods are discussed. Particular to the
network consolidation problem, reference point approach is found more useful.

Cem Polat Çetinkaya
Spatial optimization of hydrologic monitoring networks on rivers · 2007 · 140 sayfa.
Danışman: Prof. Dr. Nilgün Harmancıoğlu

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