Workshop for the adaptation of water management sector of the city of Lappeenrata


The City of Lappeenranta was the fourth demonstrator which conducted workshops to setting up adaptation pathways. Three half-days workshops were organised in November 2022 which invloved all stakeholders for all Key Community Systems (KCS) : Water management and Urban planning.
The main objective of the process is to co-construct adaptation pathways, made up of a sequence of decision-points and measures allowing for decision making despite uncertainty in Lappeenranta based on local and scientific expertise.

Climate challenge

Adaptation of Laapeenranta's water management sector

Region characteristics

Lappeenranta is a Finnish city situated in the region of ‘South Karelia’ (aka. Etelä-Karjala) on the south-eastern frontier of Finland, 30 kilometres away from the Russian border. The city is located on the shores of Lake Saimaa, which is the biggest lake in Finland and the fourth biggest lake in all of Europe. Because of that, Lappeenranta is considered one of the major urban centres in the Saimaa region. The city’s main water intake is the lake water, which a decade ago was polluted by the proliferation of algae. To address the issues, a pollution control station, designed by Lappeenranta University of Technology and built by a local company, cost the city around 2.5 million euros (LCI, 2021). Since, water conservation has been a major area of interest for the city.

Target sector

Water management sector

Participant list

  • Thomas Beaucoral , ACTERRA , Research analyst

Summarize the results of the workshop

Although it was difficult to come up with the measurable indicators, the pathways were relatively simple
to form in context of highest impact to climate adaptation. The stakeholders brought up effect of time
on the pathways: different pathways and actions might have different time scales. While some actions
can be taken immediately and the outcome can be seen in short term, there are pathways which require
more time to be effective.
Selected adaptation pathway:
  • Information about the stormwater program
  • Storm water fee
  • Support from decision-makers : Political alignments
  • Wider implementation of existing solutions
  • Wider implementation of new solutions (includes pilots)
  • Pilots (new in Lappeenranta)
  • Improving monitoring
  • + control of water flows
  • + monitoring of harmful substances and nutrients -> placement of structures
  • Decentralized treatment of runoff and stormwater (very heavy rain, exceptional meltwater)
Threshold 1
Threshold 2
Threshold 3
Very High
Addressed climate related risk
Risk related to flooding and the spread of harmful substances into water bodies
Description of impact levels
Flooding on the streets causes difficulties in traffic and for pedestrians
Pollutants and harmful substances are washed from built-up areas into water bodies
Stormwater intrusion into buildings, nutrient load to water bodies
Mixing of sewage and stormwater. Sewage overflows into waterbodies
Climate desired outcomes
The risk of oxygen loss and eutrophication decreases
Harmful substances don't migrate into the groundwater
Cleaner waters, water balance management
The risk of wastewater and stormwater mixing is eliminated
Threshold 1
Threshold 2
Threshold 3