- 1University of Zagreb, Faculty of Agriculture, Zagreb, Croatia (odomagoj.perokovic@gmail.com)
- 2University of Zagreb, Faculty of Civil Engineering, Department of Hydroscience and Engineering, Zagreb, Croatia (gordon.gilja@grad.unizg.hr)
Surface drainage system within the polder is designed to collect internal inflow, resulting
from rainfall, and external inflow, resulting from sea water infiltration, that gravitates into
the canal network. Excess water that impedes agricultural production is cyclically
pumped out of the polder, lowering the water level below the root zone. Water level
monitoring in the main canal of the drainage network is set-up as continuous real-time
measurements of surface water levels and index water velocity using radars. The
Automated Continuous Monitoring System installed under the DELTASAL project
consists of surface water regime monitoring, water quality monitoring, soil salinity
monitoring, and the monitoring of weather conditions with sensors integrated to provide
synchronized real-time data. The data collected is available to the stakeholders, polder
users, and public through an online platform. Co-creation is central to the DELTASAL
project, involving stakeholders (research-oriented community, public administration, local
authorities, and farmers) in every phase, from problem identification to development of
guidelines to optimize the water regime for agricultural use. Through workshops
stakeholders exchange requirements of water quality and quantity, validate findings, and
discuss the potential solutions that are aligned with agricultural goals specific to the
polder. The overall goal is to provide functional prognostic model as a platform for polder
management. The participatory approach aims to foster collaborative decision-making,
improving the sustainability of the drainage system. The objective of this research is to
determine the relationship between canal surface slope, water volume, and pump flow
rate under different water regime management scenarios. The research uses surface
water levels in the canal and associated pump flow rates as primary inputs to develop a
drainage optimization model as a part of the water quantity/quality prognostic model.
How to cite: Perokovic, D. and Gilja, G.: Water surface slope variation in Vidrice polder resulting from pumping operation, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-2538, https://doi.org/10.5194/egusphere-egu25-2538, 2025.
