1. General information
Location and description of the intervention
City or FUA
Brno
Region
Europe
Native title of the NBS intervention
Revitalizace Holáseckých jezer
Short description of the intervention
In an effort to improve the Holásecká lakes for both recreation and local natural conditions, the revitalization project has modified areas on the shores of the Holásecké lakes reconstructed culverts between the lakes, and removed the panel which fortified the Opleta and Lávka lakes (Ref. 4). The largest restoration activity includes removal of mud from the lakes (which can be repurposed due to low contamination) for the sake of ecologically restoring the area (Ref. 4). Plans also include improving recreation by installing wooden piers and developing a paved footpath with benches (Ref. 1). The ecological restoration will be important for wildlife, especially birds and amphibians (Ref. 8).
Address

Brno-Tuřany
620 00 Brno
Czechia

Area boundary
POINT (16.64389 49.15)
POINT (16.64243 49.14773)
POINT (16.64502 49.14606)
POINT (16.64312 49.14502)
NBS area image
Source of NBS area image
Ref. 1 "Water in Brno"
Total area
42400.00m²
NBS area
42400.00m²
Type of area before implementation of the NBS
Timeline of intervention
Start date of the intervention (planning process)
2012
Start date of intervention (implementation process)
2019
End date of the intervention
2020
Present stage of the intervention
Goals of the intervention
The project has (or will):
- Conducted a water quality survey to understand the biological state of the Lake Opleta (Ref. 1).
- Conducted a sediment analysis to better understand the conditions of key lakes, in the area, including Kašpárkovo, Typfl, Kmuníčkovo, Roučkovo, Ledárenské, Plavecké, Strakovo, Opleta, Lávka and Kocábka (Ref. 2).
- Utilized information learned to establish a plan for revitalizing the 10-lake system, with the ultimate goal of restoring water quality, fix the shoreline to enhance biodiversity (Ref. 2).
- Improved stabalization of the lakes through the reconstruction of culverts between the lakes and removed the panel fortifications of Opleta and Lávka lakes (Ref. 1).
- Will increase opportunities for recreation through the construction of a paved footpath including benches, nature trails or installation of sightseeing wooden piers on Opleta, Ledárenské and Plavecké lakes (Ref. 8).
- Will increase biodiversity, specifically for amphibians by developing shallow-water belt suitable for their reproduction (Ref. 8)
- Continually promote environmental education and awareness (Ref. 2)
Quantitative targets
Unknown
Monitoring indicators defined
Prior to the implementation of activities, several studies were carried out to better understand the project's feasibility. This first step allowed for monitoring of:
- Increase green space available for recreation (Ref 8).
- Increase of green space that is left undisturbed for habitat restoration (Ref 2).
- Removal of mud in order to change the area from swamp to a cleaner, more accessible habitat. (Ref 1.)
What types of restoration goals are / were defined for the NBS intervention?
Implementation activities
Following a study, it was determined to be safe to remove mud from each of the lakes (Ref 5). After another contamination caused by mud in the lake, re-excavation began again in 2019 (Ref 6., Ref 7). Using floating excavators, mud removal began in Pískovna Černovice in 2019; mud will be removed from one lake per year (Ref. 8).
Completed activities include:
Having the area was split into several zones:
1. A natural zone: this zone was undisturbed in order to provide a suitable habitat for species. Changes in this zone were minimized by establishing it as a protected area. Eventually, pools will be constructed on the selected suitable sites (Ref 3.). Some landscaping conditions have been created in some places to help restore wetland species (Ref 2.). These natural zones were restricted from visitors during the initial stage of the project (Ref. 2).
2. Recreational zone: this zone will be developed for recreation and fishing as well as walking and relaxation (Ref. 1). There is planned construction of a paved footpath with benches, development of nature trails, and installation of wooden piers on the three largest lakes (Ref. 1).
2. Natural-recreational zone: the final zone represents a cross-over between the two, with a connecting footpath. (Ref. 2)
3. developing shallow-water belt suitable for the reproduction of biodiversity, specifically [threatened] amphibians (Ref. 8)
4. fix the shoreline to enhance biodiversity (Ref. 2).
NBS domain and interventions
Ecological domain(s) where the NBS intervention(s) is/are implemented
Blue infrastructure
Lakes/ponds
In-land wetlands, peatlands, swamps, and moors
Grey infrastructure featuring greens
Riverbank/Lakeside greens
Vegetation Type
Please specify other amenities offered by the NBS
installation of wooden piers on the three largest lakes (Ref. 1).
a connecting footpath. (Ref. 2)
Services
Expected ecosystem services delivered
Provisioning services
Water (surface and ground water for drinking and non-drinking purposes)
Regulating services
Water purification / filtration
Habitat and supporting services
Habitats for species
Maintenance of genetic diversity
Cultural services
Aesthetic appreciation
Recreation
Mental and physical health and wellbeing
Intellectual interactions (scientific and / or educational)
Physical and experiential interactions with plants and animals
Scale
Spatial scale
Micro-scale: District/neighbourhood level
Beneficiaries
Primary Beneficiaries
Please specify other local relevant strategy
Unknown
Governance
Non-government actors
Private sector/Corporate/Business
Please specify the roles of the specific government and non-government actor groups involved in the initiative
The project was initiated by the Brno City Council. The feasibility studies and technical planning were carried out by the company Atelier Fontes and Brno City, and the project was implemented by both organizations. Funding has been provided by the city council, and significant co-funding is expected from the EU. (Ref. 1; Ref. 2).
Key actors - initiating organization
Key actors - Other stakeholders involved (besides initiating actors)
Local government/municipality
Citizens or community group
Private sector/corporate actor/company
EU body
Participatory methods/forms of community involvement used
Policy drivers
NBS intervention implemented in response to an Regional Directive/Strategy
Unknown
Please specify the "Regional Directive/Strategy"
According to a contact person, they will try to obtain funding from the EU Operational Programme Environment 2014-2020, priority axis 4, 4.2. (see interview template attachment). The programme is governed by the EU Regional Policy (Ref. 3).
NBS intervention implemented in response to a national regulations/strategy/plan
No
NBS intervention implemented in response to a local regulation/strategy/plan
Yes
Please specify the "local regulation/strategy/plan"
Along with several restoration projects, this NBS was a part of a larger strategy called "Project Water in Brno" (Ref. 1)
Mandatory or voluntary intervention
Unknown
Enablers
Presence of specific city-level GI/NBS vision/strategy/plan - mentioned in connection to the project
Yes
Please specify
Along with several restoration projects, this NBS was a part of a larger strategy called "Project Water in Brno" (Ref. 1)
Presence of specific city-level GI/NBS section/part in a more general plan - mentioned in connection to the project
Unknown
If there is a relevant strategy or plan, please specify the theme / type of the plan.
Please specify other vegetation type
The vegetation type was not specified.
-mud will be removed from one lake per year (Ref. 8).
-Some landscaping conditions have been created in some places to help restore wetland species (Ref 2.).
- pools will be constructed on the selected suitable sites (Ref 3.).
Presence of city network or regional partnerships focused on NBS - mentioned in connection to the project
Unknown
Presence of GI / NBS research project - mentioned in connection to the project
Yes
Please specify
An expert assessment of the hydrological characteristics of the lakes was conducted by the City of Brno and the company Atelies Fontes. They also carried out a biological analysis of the bottom of the lakes to determine whether the sediment could be removed as part of the planned revitalization. It was found that the sediment seated at the bottom of the Holásek lakes was not life-threatening and could be removed and spread on farmland. (Ref. 1; Ref. 3; Ref. 4)
Subsidies/investment for GI / NBS in the city - mentioned in connection to the project
Yes
Please specify
According to a contact person, the project team will try to obtain funding from the EU Operational Programme Environment 2014-2020, priority axis 4, 4.2. (see interview template attachment). The programme provides funding for environmental sustainability projects.
(Ref. 3)
Co-finance for NBS
Yes
Co-financing governance arrangements
Yes
Co-governance arrangement
Was this co-governance arrangement already in place, or was it set up specifically for this NBS?
Financing
What is/was the Cost/Budget (EUR) of the NBS or green infrastructure elements?
38 million CZK, which is approximately EUR 1,446,319 (Ref 1)
What are the total amount of expected annual maintenance costs?
Unknown
What is the expected annual maintenance costs of the NBS or GI elements?
Unknown
Please specify cost savings
Unknown
Please specify total cost (EUR)
38 million CZK, which is approximately EUR 1,446,319 (Ref. 1)
Non-financial contribution
Unknown
Please specify other environmental impact
water management: enhanced protection and restoration of freshwater ecosystems
Which of the involved actors was motivated by this model?
Please specify technological innovation
The project involves mostly changes to the infrastructure of the lakes and the surrounding area, which is why it can be considered an infrastructural innovation. These include landscaping work, modification and creation of water bodies, and adding recreational facilities. As a result, the place will become more supportive of flora and fauna and more suitable for recreation and fishing. (Ref. 2)
Novelty level of the innovation
Please specify novelty level of the innovation
Unknown
Replicability/Transferability
Please specify Replicability/Transferability
Unknown
Impacts, benefits
Description of environmental benefits
Through removal of mud from the lakes, the project will provide the benefits of increased habitat, particularly for amphibians because the shallow waters created provide ideal space for their reproduction (Ref 4.). Holásecká lakes are home to unique species of plants and animals. In the case of vegetation, wetland communities are protected here. Two species of orchids are also present in the riparian vegetation. Several species of amphibians and several species of wetland birds can be found here. In recent years, the occurrence of the European beaver has also been observed near the Holásecky Lakes. (Ref 8). Additional, contamination from the mud was causing a die-off of fish and other wildlife; this was/continues to be prevented through the mud removal (Ref 6, Ref 8). with improved habitats, it is expected that fish species will return in abundance (Ref 8).
Economic impacts
Please specify other socio-cultural impact
transportation: an existing bicycle path adjacent to the lakes continues to Vienna providing a long-distance cycling path (Ref 8)
Description of economic benefits
There were no direct economic impacts mentioned.
Description of social and cultural benefits
After the excavation of mud from Lake Opleta (expected before 2028), a natural swimming area will be accessible to the public (Ref 5). Newly constructed walking paths can be accessed for recreation (Ref 1), and an existing bicycle path adjacent to the lakes continues to Vienna (Ref 8). There are also wooden piers in place where fishing can take place (Ref 5); with improved habitats, it is expected that fish species will return in abundance (Ref 8).
Type of reported impacts
Indicators
The City of Brno and the company Atelies Fontes carried out a biological analysis of the bottom of the lakes to determine whether the sediment can be removed as part of the planned revitalization. It was found that the sediment seated at the bottom of the Holásek lakes was not life-threatening and could be removed and spread on farmland. (Ref. 1; Ref. 3; Ref. 4). Following recontamination of some lakes, a re-excavation was conducted through the same procedure (Ref. 5).
Environmental, social and economic impacts
Analysis of specific impact categories
Job creation: The NBS created ...
Environmental justice: The implementation of the NBS project resulted in ...
Please specify other method used to evaluate the impacts of NBS
- Conducted a water quality survey to understand the biological state of the Lake Opleta (Ref. 1).
- Conducted a sediment analysis to better understand the conditions of key lakes, in the area, including Kašpárkovo, Typfl, Kmuníčkovo, Roučkovo, Ledárenské, Plavecké, Strakovo, Opleta, Lávka and Kocábka (Ref. 2).
Negative impacts: Did the project cause any problems or concerns?
No information was found regarding negative impacts of the project
COVID-19 pandemic
As of July 20, 2020 no information was provided.
Methods of impact monitoring
Process of recording NBS impacts
Evidence for use of assessment
Presence of an assessment, evaluation and/or monitoring process
Yes
Presence of indicators used in reporting
Yes
Presence of monitoring/evaluation reports
Yes
Availability of a web-based monitoring tool
No evidence in public records
Impact assessment mechanism
Name of any specific impact assessment tools
A hydrobiological survey was conducted to evaluate the quality of the sediment on the bottom of the lakes (Ref. 1; Ref. 2; Ref. 4)
Use of GIS in mapping impacts
No evidence in public records
Citizen involvement
Citizens involvement in assessment/evaluation
Unknown
Citizens involvement in the analysis of the assessment/evaluation
Unknown
Follow-up to the evaluation / assessment
Unknown
References
List of references
Ref. 1. City of Brno (2017). Voda v Brně. [online] [Website not available in 2020].
Ref. 2. Atelier Fontes (2012). Plán revitalizace Holáseckých jezer. [pdf] [Available at: https://www.brno.cz/fileadmin/user_upload/sprava_mesta/magistrat_mesta_brna/OZP/USES/PlanHolasJezer.pdf] [Accessed on 24 July 2020]
Ref. 3. European Commission (2017). Environment. Czech Republic. [online] [Available at: http://ec.europa.eu/regional_policy/en/atlas/programmes/2014-2020/czech-republic/2014cz16m1op002] [Accessed on July 24 2020].
Ref. 4. City of Brno (2017). Holásecká jezera jsou o krok blíž k obnově: bahno není nebezpečné. [online] [Available at: http://www.brno.cz/brno-aktualne/tiskovy-servis/tiskove-zpravy/a/holasecka-jezera-jsou-o-krok-bliz-k-obnove-bahno-neni-nebezpecne/] [Accessed on July 24, 2020].
Ref 5. Denik. (2016). The mud disappears from the Holasecke lakes, they get piers. [online]. [Available at: https://brnensky.denik.cz/zpravy_region/z-holaseckych-jezer-zmizi-bahno-ziskaji-mola-20160611.html]. [Accessed on July 24, 2020].
Ref. 6. O24. (2017). Holase lakes were again infested with faeces. The problem is probably mud. [online]. [Available at: https://ct24.ceskatelevize.cz/regiony/2011099-holasecka-jezera-opet-zamorily-fekalie-problemem-je-nejspise-bahno]. [Accessed on July 24, 2020].
Ref. 7. Denik. (2018) People are supposed to swim in the Holasecke lakes again. Excavators extract mud from the lakes. [online]. [Available at: https://brnensky.denik.cz/zpravy_region/v-holaseckych-jezerech-se-maji-opet-koupat-lide-z-jezer-vytezi-bahno-bagry-20181003.html]. [Accessed on July 24, 2020].
Ref. 8. Brnenska Drbna. (2019). Brno will drain the mud from the Holasecke lakes. The revitalization of a natural monument will cost tens of millions. [online]. [Available at: https://brnenska.drbna.cz/zpravy/spolecnost/13520-brno-necha-odcerpat-bahno-z-holaseckych-jezer-v-turanech-revitalizace-prirodni-pamatky-vyjde-na-desitky-milionu.html]. [Accessed on July 24 2020].
Interview
Attachment Size
E-mail response by Eva Kostkova (15.87 KB) 15.87 KB
Comments and notes
Comments
4/enablers/subsidies: " - there is no information on which EU funding programme or mechanism will be used (note that it hasn't been used yet - they're planning to attract funding in the future). I sent an e-mail to the contact asking for this piece of information-- 2017 review.
Additional insights
In 2017, after some excavation to the lakes had occurred, there was again a problem with water contamination (Ref. 6). The project was thus extended, with mud being removed from the lake one lake at a time, starting in 2019 (Ref. 8).
Public Images
Image
Revitalization of the Holásecká  Lakes
Revitalization of the Holásecká Lakes
Photographer: Eva Kostková (https://voda.brno.cz/clanek/revitalizace-holaseckych-jezer), retrieved 08/24/2018
Image
Revitalization of the Holásecká  Lakes
Revitalization of the Holásecká Lakes
Photographer: Eva Kostková (https://voda.brno.cz/clanek/revitalizace-holaseckych-jezer), retrieved 08/24/2018