Protecting Baltic Sea from untreated wastewater spillages during flood events in urban areas

Interreg Baltic Sea Region NOAH

  • Duration: January 2019 - June 2021
  • Budget: total 3 000 000 / ERDF 2 430 000
  • Financier: Interreg Baltic Sea Region
  • Lead partner: Tallinn University of Technology
  • Project partners: 9 towns and water utilities, 7 academic & research institutions, 2 umbrella institutions

Better urban planning, better control of the urban drainage system,
shared knowledge in the Baltic Sea region.


Project Partners

Associated Organisations

Current news & events

BSR NOAH (Protecting Baltic Sea from untreated wastewater spillages during flood events in urban areas) project is establishing a Stakeholder Representative Panel to ensure the transnational value to be verified and documented through the various channels used in communication as a part of WG5 Communication: Exploitation strategy.

Outputs of BSR NOAH are formulated as the NOAH concept which will be introduced to the Stakeholder Representative Panel for discussion and joint development.

NOAH regional workshop in Finnish will be held in the Meremme tähden / For the Sake of our Sea event in Rauma, Finland, on the 7th of May 2020.

Further information (in Finnish) on the event website:

Project outputs

Media releases

NOAH on social media

4 days ago


NOAH partners were not able to meet in Gdańsk this month as planned, but the work sure continues as planned. Happy faces after a successful NOAH progress meeting online!
#bsrnoah #interregbsr #floodprotection #partnership #progressmeeting #onlinemeeting
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1 week ago


The work with investments in the pilot area of Ogre municipality in Latvia has started. The first activities include excavation work in locations indicated with red arrows (see picture). In the second phase, early April, electricity will be drawn into three locations. In the last stage, the installation of online sensors, i.e. automated hydrological stations, will be performed. All locations will be equipped with video cameras to have the possibility to verify AHS measurements.

These NOAH investments will serve the aim to decrease the risk of untreated wastewater spillages from the domestic wastewater flows (septic tanks in underground chambers) during flood events in the area.

#bsrnoah #interregbsr #investments #wasterwater #floodcontrol
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2 weeks ago


In the beginning of March, Riga Technical University and Liepaja municipal authority "Komunālā pārvalde" organised a meeting for the city council members in charge of the construction department and representatives of Liepaja's Water Ltd.

In the meeting, data collection results from pilot territories and hydraulic modeling possibilities were presented. Participants were also familiarizes with LID solutions by Grupa 93's Jurijs Kondratenko who is an expert in urban planning, with focus on economics, sustainable mobility and green infrastructure. In addition, the upcoming NOAH solutions and using them in flood control of urban areas in the future was discussed.

#bsrnoah #interregbsr #balticsea #floodcontrol #rtu #liepaja
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3 weeks ago


Stormwater flow measurements and quality sampling in Haapsalu, Estonia. The work was done by subcontractor Teramet OÜ.
#bsrnoah #interregbsr #balticsea #stormwater
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4 weeks ago


In Latvia, NOAH team of the Riga Technical University measured dry-weather groundwater flow in the city of Ogre. The measurements were performed in Loka Street catchment area located in the eastern part of the city, which is used as pilot territory for stormwater pipe hydraulic calculations. The measurements will be used for hydraulic model validation purposes. #bsrnoah #interregbsr #balticsea #floodcontrol #hydraulics #RTU ... See MoreSee Less

View on Facebook

NOAH #partners were not able to meet in Gdańsk this month as planned, but the work sure continues as planned. Happy faces after a successful NOAH progress meeting #online!
#bsrnoah #interregbsr #floodprotection #partnership #progressmeeting #onlinemeeting

We're always into cooperating with projects and sharing outreach methods! Reaching outside the partnership - @BsrNoah example with Stakeholder Representative Panel and regional workshops to approach target groups.

NOAH aims to reduce wastewater spillages during floods

NOAH at the @BSRWater Platform meeting. Looking forward to having an overview on good practices and solutions within #stormwater management. #bsrnoah #bsrwater #balticsea #interregbalticsearegion

NOAH represented the #Stormwater Poland 2020 Conference in Gdańsk by Andrzej Wójtowicz, president of Słupsk water utility.
#bsrnoah #balticsea #interregbalticsearegion #poland

New NOAH article in Polish in the @kierunekwodkan periodical. Fragments of the issue 1/2020 can be found at, Klara Ramm's (@IGWP_pl) article on p. 8-13. #bsrnoah #balticsea #waterprofessionals #floodprotection #kierunekwodkan

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More about NOAH

Floods causing inflows of pollutants into the Baltic Sea

Effective control of the stormwaters in urban areas is one of the biggest environmental challenges in the Baltic Sea region as climate change brings along intense rainfalls and storms. Urban drainage systems are not capable to handle the floods, which rises the risk of flushing untreated wastewater from urban drainage systems into the nature. This is harmful to people and environment due to the excessive amount of nutrients, hazardous substances and pathogenic microbes in wastewater.

Holistic planning and smart drainage systems

Urban areas can be prepared for floods by improved planning and self-adaptive drainage operations. NOAH project brings together nine towns and water utilities, seven academic and research institutions and two umbrella organisations from six countries around the Baltic Sea to join their forces.

NOAH’s approach is to create a concept for holistic planning and implement smart drainage systems in real urban environments. Holistic solutions combine stormwater management with spatial planning. This is followed by development of smart drainage systems to make the existing facilities resilient to the impacts of climate change.

Healthier and cleaner Baltic Sea

The NOAH concept will be easily scalable to any urban area around the Baltic Sea. Implementation of the concept could cut up to half of the inflow of pollutants into the Baltic Sea. The activities will be anchored into daily practices of towns and water utilities, leading to healthier and cleaner Baltic Sea!


Ivar Annus
+372 620 2557  

Minna Keinänen-Toivola
+358 44 710 3063