Development of sustainable and climate resilient urban storm water management systems for Nordic municipalities (UrbanStorm) | Viimsi vald

Development of sustainable and climate resilient urban storm water management systems for Nordic municipalities (UrbanStorm)

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Background  

Estonia will be affected by climate change as any other country in the world. By 2100 Estonia will face significant changes in terms of temperature, wind and rainfall. Annual precipitation will grow by 19% in Estonia, the highest growth is expected in spring (24%) and winter (22%) in the future. The frequency of occurrence of precipitation exceeding 30 mm per day is projected - in the period from 2021-2030, the increase of the occurrence by 99%, in 2031-2050 by 231%, and during the period from 2051 to 2100 by 435%. Summer rainstorms will increase and intensify. As a result, the load on storm water collection systems and wastewater treatment will increase, and due to inadequate drainage, there will be streams in the city streets. Already today, existing rainwater systems are not able to cope with torrential rain and there are drawbacks in storm water drainage.

An important part of the responsibility lies on local governments who are in charge of establishing and maintaining storm water collection systems in their territories. Thus, it is essential to increase the capacity of local governments to adapt to climate change, especially their capacity to mitigate flash flooding caused by cloudbursts. This would include developing sustainable urban drainage systems (SUDS).

Objective

The main objective is to increase climate resilience in Estonian municipalities, especially their resilience to flash flooding caused by heavy rainfall.

Expected results – by the end of the project

  • 36 000 m3 of stormwater will be drained in 4 pilot areas in Viimsi
  • 5 ha in Viimsi will be transformed into climate-resilient areas
  • Number of emergencies caused by stormwater and flooding will decrease in catchment areas connected to pilot areas
  • Storm water experts and specialists of municipal infrastructure development have acquired new knowledge and skills for use of sustainable urban drainage systems (SUDS)
  • Inhabitants of Tallinn and Viimsi will be more aware of SUDS and adapting to climate change
  • Real estate developers are more prepared to use SUDS

Activities

Activity

 

Deadline

1. Analysis of existing national and local level legislation and standards related to climate resilient urban flood management:

  • Proposal for the rain water taxing system in Tallinn

December 2019
December 2019

2. Assessment of existing experience and best practices in implementing integrated and climate resilient urban drainage systems:

  • Analyses of implemented smart, sustainable and climate resilient storm water management systems
  • Best Practice Brochure

March 2020

March 2020
March 2020

3. Developing strategy and action plan for climate change adaptation for Viimsi and for Tallinn:

  • Input for the Sustainable Energy and Climate Adaption Action Plan of Tallinn
  • Strategy and action plan for climate change adaptation for Viimsi Municipality

December 2021
Autumn 2019
December 2021

4. Capacity building of Estonian municipal water management specialists and engineers:

  • 4 training courses
  • Handbook for SUDS solutions

December 2022

December 2021
December 2021

5. Designing and setting up a comprehensive digitalised storm water management system for Viimsi:

  • Storm water management software
  • Organisational structure for setting up the digitalised storm water management system
  • Renewing design standards, in Tallinn

February 2023

December 2019
December 2021
March 2022

6. Use of nature-based measures to mitigate floods caused by heavy rain:

  • Development of methodology for cost-benefit analysis
  • Construction of SUDS demo sites in Viimsi

February 2023

December 2018
October 2020

7. Transfer and replication of project’s results:

  • Creating a toolbox to support compilation of adaptation strategies and SUDS construction
  • Creating a working group to transfer project results for construction of SUDS

January 2023

December 2021
October 2020

8. Assessment of the socio-economic impact of the project actions and their impact on urban ecosystems:

  • ex ante assessment report
  • ex-post assessment report
  • LIFE indicators monitoring

February 2023

January 2019
December 2022
Continuous

9. Experience exchange and stakeholder involvement

  • National round table meetings
  • Guidance materials for municipalities
  • International conference

February 2023

Continuous
December 2021
December 2021
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10. Overall project visibility and dissemination of results

  • Roll-up posters, information boards
  • Media articles
  • Event in Viimsi to present the SUDS

February 2023

November 2019
Continuous
October 2020

11. Project management and monitoring

Continuous

12. Development of After LIFE Plan

February 2023

Partners

Budget

  • Total budget: 1 957 843 €, including eligible 1 686 093 € and 581 203 € co-funding by Viimsi Municipality
  • LIFE co-financing (60% of total budget): 1 011 654 €

Accomplishments

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