Completed

The maintained reserve “Dolna Topchiya” (Natura 2000 BG0000195 “Reka Tundzha 2”) was restored by RIEW–Stara Zagora through a diversion weir and a ~900 m channel linking the River Tundzha to the Malka Tundzha, to rewet riparian floodplain forest (habitat 91F0). In 2018–2024 the scope expanded under OP Environment project BG16M1OP002-3.007-0010 to also restore the inundation regime of the adjacent maintained reserve “Balabana” (Elhovo Municipality). Main works delivered in 2023: at Balabana, a water intake on the Tundzha and reconstruction of irrigation canals “Iztochen” (1,897 m), “Popovska 1” (879 m) and “Popovska 2” (863 m); at Dolna Topchiya, three gabion weirs (“Dipsiza 1–3”) with crest lengths 14/10/12 m to raise soil moisture. Contractor: Technostroy-Engineering 99 AD; supervision: IVPI Consult OOD. Total budget BGN 1,489,422.96 (ERDF + national co-financing). Closing press event: 21 Nov 2023; administrative end: 26 Apr 2024. The objective is to sustain riparian forests (habitats 91F0, 92A0) by re-establishing periodic flooding and groundwater recharge.

Women in Europe for a Common Future (WECF) implemented Bulgaria’s first constructed wetland in Vidrare (Pravets) to treat domestic wastewater from the St. Panteleimon home while building local capacity. The plant is a vertical subsurface-flow reed bed for ~80 PE, combining an 18 m³ two-chamber settling tank with intermittent pumping to a 266 m² planted sand filter split into two beds; treated effluent discharges to a nearby gully. Design: Otterwasser (DE) and Ecoproject (BG); works: Interstroy; funding: German Federal Environment Foundation (DBU). Construction ran Oct 2010–Apr 2011; the facility was officially inaugurated on 29 April 2011. O&M is handled by trained staff from the home; reported investment was about €45,000 (+≈10% for planning). The site has served as a national demonstration/education example and continues to be cited by Bulgarian authorities (e.g., Ramsar COP14 National Report, 2022).

A linking canal with a lock, constructed in 1994, restored the hydrological connection between Srebarna Lake and the Danube, enabling an annual inflow of river water and preventing the lake’s isolation that began in 1949. This intervention improved water levels, reduced eutrophication trends and supported the recovery of biodiversity, notably the Dalmatian pelican colony. The site, inscribed on the UNESCO World Heritage List, is managed by the Ministry of Environment and Water through the Regional Inspectorate (RIEW) in Ruse, and has been part of Natura 2000 since 2008, with a 673-ha buffer zone.

Recent UNESCO reporting (2024) confirmed the site’s official area at 638 ha after correcting a cartographic error from 2007. Management faces new challenges: predation of pelican eggs by invasive raccoon dogs and, more rarely, golden jackals, sometimes facilitated by late ice formation after mild winters. These factors have prompted measures such as protective fencing around nesting sites. The hydrological system and monitoring remain essential to maintain ecological values, while updated management planning and maintenance of hydraulic structures are priorities for sustaining the lake’s ecological health.

LIFE-Nature “Green Borders” (LIFE07 NAT/RO/000681, 2009–2013), coordinated by WWF with Romanian and Bulgarian partners, aimed to secure Pygmy Cormorant (Phalacrocorax pygmaeus) and Ferruginous Duck (Aythya nyroca) by restoring nesting/feeding habitats and promoting best fisheries management. It created a cross-border framework for 11 Natura 2000 sites along the Lower Danube.
Key works included improving the hydrological regime of Kaikusha marsh in Persina Nature Park (BG), completed in 2012, and the ecological reconstruction of the Gerai(ului) backwater at the Olt–Danube confluence (RO) in 2011.
The project’s studies supported the 2013 designation of three Transboundary Ramsar complexes (Iezerul Călărași–Srebarna, Suhaia–Belene Islands Complex, and Bistret–Ibisha), strengthening coordinated wetland management across the border.
Follow-up restoration in the Lower Danube Green Corridor continued under the Living Danube Partnership: water control was modernised at Persina/Kalimok and a further project prepared for Kaikusha; in Romania, >400 ha at Gârla Mare–Vrata were reconnected to the Danube in 2022. Note: in Sept 2021, a major fire burned most reedbeds at Kaikusha, temporarily degrading habitat.

The project’s objective was to improve the conservation status of aquatic bird species in Lower Prut Floodplain Natural Park (Galați County, RO) through scientific inventory, monitoring, site restoration, awareness-raising, implementation of the park management plan, and the designation of Natura 2000 SPAs. Partners were the University of Bucharest, the Romanian Ornithological Society and Romsilva – Galați Forestry.

At Mața-Rădeanu, dykes were rebuilt to restore hydraulic control: a 1,800 m dyke separating Mața (Galați) from Cârja (Vaslui) and a 3,600 m dyke subdividing Mața; a birdwatching tower serves the complex. The area falls in SPA ROSPA0130 Mața-Cârja-Rădeanu and functions today as a large fish-farming/recreational fishing complex managed locally by AJVPS Galați; recent county risk documentation lists “Amenajarea Piscicolă Mața-Rădeanu.” In 2024, local press reported drought-related low water affecting this complex.

The Ministry-coordinated programme in Šumava National Park restores natural (pre-drainage) water regimes to mires, stabilising water tables, reducing fluctuations, and re-starting peat-forming vegetation and processes while engaging the public. Design has been refined around the Target Water Table (TWT) and a micro-catchment approach to size/space peat and wooden dams, infill drains, and return small streams to near-natural courses; public outreach and monitoring are integral.
Since 1999 the programme has expanded far beyond early pilots: by 2024, 65 locations in the Šumava region had been hydrologically restored, totaling 2,718 ha, with ~296 km of drainage channels blocked, 36 km of streams and 28 spring areas restored.
Within LIFE for MIRES (2018–2024), the project delivered ~2,181 ha of restored wetlands, 212 km of ditches blocked, 35 km of restored streams, and 28 springs, supported by 1,840 volunteers, strengthening habitat for flagship species such as black grouse and improving landscape water retention.
Overall, Šumava’s mire restoration now couples targeted hydrological design with long-term monitoring and public involvement to secure biodiversity gains and climate-relevant water storage at landscape scale.

Removing barriers to fish migration, enhancing and restoring habitats, improving water-management infrastructure, and establishing a monitoring system. Funded by LIFE+ and implemented by Purgator Engineering Ltd. under the responsibility of the University of Ljubljana (UL FGG), the 2012–2016 “Ljubljanica connects” project rebuilt two dysfunctional fish passes (Fužine weir and Ambrožev trg), modernised the lifting gates at Ambrožev trg, and raised the Zalog sill by 20 cm to improve levels and oxygenation in upstream oxbows. A low-cost IR “fishcam” system was installed in both passes, providing continuous, online monitoring and confirming passage of 12 fish species, including the target Hucho hucho, Rutilus pigus and Leuciscus souffia. An After-LIFE plan maintains monitoring and knowledge transfer. While urban-section connectivity improved, full longitudinal continuity to the Sava remains constrained: the paper-mill weir at Vevče is the first impassable barrier upstream from the confluence, and the Gruber Canal sluice lacks a fish pass; national planning documents list measures to establish passability at Gruber. Coordinator: University of Ljubljana; partners: Purgator and Geateh.

The Danube Delta Biosphere Reserve Authority’s Fortuna Wetland Restoration Project reconnected the 2,115-ha agricultural polder “Fortuna” to the Danube, restoring the hydrological regime and functions (works completed in 2004). Since then, restoration has scaled up across the Șontea–Fortuna complex. In 2015–2017, the EEA-funded RESTORATION-DD project dredged 13.56 km of secondary channels to re-establish habitat connectivity and migration routes, with monitoring and outcomes reported for c.7,000 ha within the 24,636-ha hydrographic unit. From 2021 onward, ARBDD is implementing a multi-site POIM project (SMIS 2014+ 120889) to improve hydrological conditions in Șontea–Fortuna, Matița–Merhei and Somova–Parcheș; planned works include the Fortuna Canal (5,176 m) among other links, with public communications indicating ~156 km of channels across the complexes. In 2024, environmental procedures were filed for desilting Lakes Fortuna and Uzlina, signalling continued management of water circulation and eutrophication control.

The project, part of a wider pollution-reduction programme, restored key habitats for bird conservation by improving lagoon water circulation, removing ~185 000 m³ of polluted sediments, creating a new freshwater marsh at Bertoška bonifika, flooding former farmland, and installing sluices to regulate marine and freshwater inflows. About 40 000 m³ of clean material was reused to form mudflats and nesting islets, enhancing habitats for species such as little bittern, great reed warbler, and little grebe. The restoration also included construction of visitor facilities and observation points (2009–2015), and establishment of a circular educational trail. Management is ongoing under DOPPS – BirdLife Slovenia, with adaptive measures such as late mowing and grazing by Istrian cattle and Camargue horses to maintain wet meadows. The reserve is involved in recent cross-border projects (e.g. POSEIDONE 2023–2025) promoting green and blue infrastructure, and continues active monitoring of birds, water quality, and hydrology.

This project improves the conservation status of floodplain bird species protected in the Natura 2000 sites SPA Dunajské luhy (Slovakia) and SPA Szigetköz (Hungary). It is funded by the LIFE Programme. Since 2015, the follow-up LIFE Danube Floodplains (LIFE14 NAT/SK/001306) and partners have restored river connectivity and water regimes by reopening 18.5 km of tributaries, restoring >75 ha of wetlands and advancing earlier, better-timed simulated floods; water-regime improvement now covers ~1,805 ha. Recent actions in Slovakia include reopening 3.7 km of the lower Vojčianske side arm (2023–24), partial reconnection at Kráľovská lúka (2024) and re-excavation/reconnection of the Foki side arm in the Old Danube (~2.0 km; 2025). Monitoring reports note positive responses of rheophilic fish, amphibians and floodplain vegetation; hydromorphological works have restored extensive floodplain forest and riparian habitats (e.g., 482 ha of 91E0* and 115 ha of 91F0). In Hungary’s Szigetköz, the water-replenishment system was extended in 2014–15 and connectivity enhanced with fish passes at Dunasziget (1998), Ásványráró (2015) and at the Mosoni-Danube outlet in Vének (operational 2022).