LL2 – Smart Douro

Smart Douro Inland Waterway Infrastructure Resilience Management

The Douro is the only Portuguese inland waterway in the TEN-T (Trans-European Transport Network).

The Douro belongs to the Core Network and is considered a feeding point of the Atlantic Corridor. It provides connectivity between the corridor and the inner side of Portugal’s North and Centre regions, and it could potentially serve the Spanish region of Castilla y León and its important logistic centres, such as Salamanca.

This makes Douro a key element of the Core Network.

The Douro Portuguese inland waterway included in the TEN-T feeding point of the Atlantic Corridor connecting with the inner side of the North and Centre regions in Portugal (possibility of Spanish regions)
Corridor / Area
Atlantic Corridor
Port Authorities
7+ Shippers
4+ Mobility Service Providers
3 Multimodal Operators
3 Ports


In ReNEW, the Douro Living Lab ‘DIW 2024’ will have two main components:

• Resilient DIW 2024 and Sustainable DIW 2024.

• Digital Twin – Resilient DIW 2024

We will use the extensive real-time data flows produced by the existing meteorological and hydrological sensors to foster and sustain the development of a digital twin for modelling river behaviour, especially for drought and flood analysis and real-time prediction.

This will allow APDL to go a step further from the existing meteorological and hydrological models, which lack the necessary flexibility to respond to what-if simulations. This digital twin of the hydrological river behaviour will allow decision-makers to make informed decisions, especially in extreme weather events.

This will include the integration into the already existing Emergency Plan.

News from Living Lab 2

March 2024

In the context of the pollution control use case, the preliminary implementation of the solution for storing data from data loggers on the Ethereum blockchain is now completed. The solution involves the creation of a smart contract that stores data based on the device and timestamp pair, also recording the sensor reading value and the ship coordinates. An Ethereum wallet is used to pay the cost of transactions for which the Ethereum Sepolia Testnet is being used (photo below).

Using the Ethereum blockchain to store data from data loggers offers significant advantages in terms of security, immutability, transparency and decentralization. However, it is important to consider challenges related to cost, network slowness, and scalability before implementing this solution.

To lower the burden on the network and the overall cost, the LL2 has devised an approach that maintains the immutability of the data and the identification of potentially harmful discharges, but with a less frequent need to write data to the ledger.

This approach considers that the datalogger itself is an intelligent element, capable of carrying out a prior analysis of the values measured at each moment and determining whether they should be transmitted immediately, or only when a predefined time interval between transmissions is reached.

In other words, an interval of 2 hours can be defined between transmissions for normal values, that is, values that do not indicate a decrease in the volume of water in the tank. However, measurements will always be made with a very short measurement interval (e.g. 5 minutes) and if the measurement at that moment is lower than the measurement immediately before, then this value will be transmitted immediately. The transmission of values that are lower than those preceding will always be done immediately, to ensure that all situations of possible non-compliance are quickly transmitted.

The next step will be the installation of the data loggers on board one or two pilot ships.


September 2023

The main objectives of the Living Lab 2 – Smart Douro are to improve predictions of extreme conditions, adapt to the circumstances and plan the adequate response, considering several scenarios, including existing rail connections and their role in urgent situations. With effective monitoring of wastewater deposits and providing public entities with necessary information to act, the LL aims to prevent illegal wastewater dumping and help improve the water quality.

Since March 2023, the LL2 has organised meetings with key stakeholders including APA (Portuguese Environment Agency) and DGRM (Directorate-General for Natural Resources, Safety and Maritime Services) to refine requirements and discuss approach to the legal and operational implications, legislative process, and enable the acceptance of means of verification of infractions. Additional meetings have been organised with technological partners to explain the project and analyse how to manage the outputs and data coming from the equipment and feed it to the blockchain. In this regard, the LL2 is in the process of making a cost benefit analysis in order to evaluate potential solutions and choosing the best one for implementation in the Douro.

In addition, in the last period the LL2 verified the operators’ interest to participate in the pilot and factors that might be of importance for future use including discounts for collaborating companies, better trip planning and avoidance of unjust advantages by non-compliant operators.

Next steps for early 2024 include blockchain and partner operator selection, followed by implementation and trials of selected solutions for the Living Lab.

Partners involved

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