Property:Project summary
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R
The existing bypass channel does not function. Requires a redesign to push more flow through it and to make it more attractive to fish. This structure just upstream of the confluence of the Ravensbourne with the Pool River. It is a sloping-back weir with a head loss of about 437 mm. Some eel passage is likely to be possible at low flows, however it is likely to be a significant barrier to fish passage. +
N
The existing river was an artificially wide channel with virtually no gradient. The existing wooden flow deflectors installed between 2002 and 2003 were insufficient in their attempts to enhance flow diversity. The project successfully narrowed the river through the construction of artificial berms mimicking those found naturally and the excavation of pools. +
R
Recovery of riparian vegetation affected by fire in Canaletes River and tributaries. Horta de San Joan +
The fire in July 2009 burned 3.9 ha of riparian vegetation consists mainly in willows, ash and poplar, which affected the river ecosystem. This project aims the recovery of riparian vegetation burned by the fire.
The main actions in this project are: facilitate natural regeneration and recovery of riparian vegetation; sustainable plan for vegetation management of burned area; recovery of riparian vegetation using engineering techniques; control of exotic species as sugarcane and rhizomes, and Aleppo pine.
The project has a total budget of 5.782.282€ and is financed by the ACA (Agencia Catalana del Agua), the Municipality of Horta de San Joan and Graëllsia G.E.C.A. +
H
The fish pass on HPP Blanca is the first case of fish way on Sava river HPPs. It is located on the right part of HPP Blanca dam and constructed in the way of imitation of natural watercourse with hydrological characteristics, morphology, materials and varied habitat. The water level in the accumulation lake is changing for 1 m on the daily basis, which is why the inflow in fish pass has vertical slot pass with hydraulic barriers. Water velocity in the fish pass does not exceed 1 m/s. The flow is adjusted on fish migration and hydraulic scheme of the accumulation lake (http://www.he-ss.si/pdf/he_blanca-primer_dobre_prakse.pdf).
In order to bridge the differences in elevation, which is 9.4 m, the length of crossing is 680 m. Of these, 110 m of concrete section (intake facility on the upstream side) and 570 m of sustainable segment, in which also the culvert under a public road and drainage section is included (designed to attract fish). Water outflow from the fish pass itself attracts fish (http://www.he-ss.si/pdf/kratek-opis.pdf). +
L
The flood plain project is a combined flood plain and river restoration project.
Main drivers for the project: UK: Site Special Scientific Interest remedies, UK Biodiversity Action Plan Targets, UK Climate Change adaptation, UK: Water Quality targets EU: Water Framework Directive.
Main Outcomes:
Key Outcome 1:
Long Preston Wet Grassland: Project achieved 97% of 765 hectares of floodplain into
voluntary Environmental Stewardship Agreement using evidence based management
plans.
Partnership: Since 2004 over 10 organisations (Public/Private and Charitable)came together to develop a vision for the river and flood plain. Between 2005 and 2013 the partnership implemented works; achieving a sustainable current and future environmental and
social resource.
Baseline: In 2004 The flood plain baseline indicated by Site of Special Scientific Interest
monitoring indicated that the site had high potential to support wading and over wintering birds but condition assessments indicated degraded habitat.
Result: Ongoing monitoring indicated site is now nationally important for several species of
breeding wading bird of conservation concern; at least 60 pairs breed there. More than
2500 individual overwintering waders and wildfowl have been counted in recent winters.
97% of 765 hectares of floodplain is now in some form of voluntary Environmental
Stewardship Agreement. SSSI condition statement has highlighted site is now recovering.
Key Outcome 2:
Long Preston Deeps River Restoration: Between 2009 and 2013 the partnership produced
a strategic river restoration plan for 7km and implemented over 3.5 km of naturalisation
and restoration with riverine floodplain improvements of >15 hectares.
The river naturalisation was designed and carried out to enable minimal future human intervention. Complementary strategic management projects including River Ribble Invasive Species Project were developed and implemented alongside.
Monitoring: Wide range of monitoring techniques from standard SSSI conditions
assessment, fish surveys, University of Salford hydrological monitoring, RSPB bird
surveys, kite photography surveys, Archaeology watching briefs. University of Salford
monitoring results demonstrate naturalisation techniques have been successful in reducing erosion and stabilising in channel morphology. Fish and Bird surveys indicate desirable
species are increasing in number. Visitor number increasing utilising promotional materials
e.g. website, local businesses, interpretation boards and organised events.
Site used nationally as a case-study of WFD action implementation and river restoration conference sharing.
How was all of this achieved?:
Strong partnership, Variety of communication strategies, Excellent consultation, ambitious
multi objective vision, utilisation of voluntary government supported eco and farming
sensitive sustainable management, showcasing success, detailed monitoring, community
events and resources, dedicated long standing project officer, naturalisation to enable
minimal future river intervention, complementary projects, recording, sharing and learning
from lessons learnt, planning for the future, expanding partnership to incorporate new
objectives and funding sources.
G
The flow velocity in the stream had become too high, causing bed incision and lower water levels. To stop this effect, almost 100 dead trees and stubs were introduced in the Gastersche Diep, in three 400-metre-long stretches. +
I
The fluvial space has been reduced by the advance of agriculture, infrastructure construction and the possible expansion of industrial estates. Also, improper utilization of public use involves the accumulation of waste. The axis of the Llobregat highway is also source of noise and visual pollution.
The main objectives are: creating an artificial wetland; creating a wet meadow (temporary flooding); protection of sand and gravel bars; construction of a longitudinal wall for crop protection. +
C
The former saltworks of the Camargue are located in the southeast of the Rhône delta, in the Camargue Regional Natural Park and the UNESCO’s Man and Biosphere Reserve. This site represents a vast coastal area of over 6,500 ha in the municipalities of Arles and Saintes-Maries-de-la-Mer. Developed for salt production in the 1960’s, the site was modified and managed with a human dominated water cycle during 50 years.
In 2011, the site was purchased by the Conservatoire du Littoral. At that time, the main objectives for the site moved from salt production to wetland conservation. A restoration process through adaptive management was quickly put into place by the Conservatoire du Littoral (owner), the Regional Natural Park of the Camargue (coordinating manager), the Tour du Valat Research Institute and the Society for Nature Conservation (co-managers). Through these efforts, the site is becoming a highly dynamic and functional coastal wetland that reconnects the surrounding aquatic ecosystems within the Camargue Natural Regional Park.
This site hosts important biodiversity and acts as a buffer against sea floods. While one of the main ambitions of the restoration project is to enhance biodiversity, the significant expansion of new halophytic vegetation can also set up a natural protective defense to reduce wave energy, height and speed induced by sea surge in the coastal lagoons, thus decreasing flood effects inland. Furthermore, coastal vegetation can help increase sediment and organic matter trapping, reducing flood risks. But most importantly, the site provides space set aside to mitigate responses to sea-level rise. This corresponds to recent scientific research recommending that “accommodation space” should be expanded by using “natural and nature-based features”. +
I
The full name of the project is: ''Integrated Planning of water resources use within the Irpin River basin'', subtitle: Irpin River restoration via integrated river basin management - Balancing nature, agriculture and recreation. The project was presented on the RR conference in Vienna 2013.
*'''Zome map out to 10km to see the outline of the exent of the project.'''
The project idea was developed on the basis of results from a comprehensive technical/hydrological study of the whole river basin in the years 2009-2012. In 2013 the Ukrainian Centre for River Restoration (UCRR) was established at the Institute of Water Problems and Land Reclamation, Kiev. The Irpin river project was selected as a first official project of the UCRR.
The project implementation has started with the participation and consultation of stakeholders in a special workshop in April 2014. Before, during and after this workshop all kind of information has been collected and used to set up a database for the use of GIS visualisation, GIS-based modelling and first characterisation of the catchments. +
P
The funding obtained from CRF will be used to implement a programme of moorland restoration aimed at improving the water quality in two river catchments within the Dark Peak SSSI. Many river catchments of the Dark Peak SSSI contain significant areas of bare and eroding peat, which is the dominant reason for failure of various waterbodies. There are significant correlations between levels of dissolved organic carbon (DOC), colour and organic phosphorus, and particulate organic carbon (POC) and metals in the water.
Works included:
Timber and stone dams creation; aerial spreading of lime/seeds/fertiliser; supply and spread bags of heather brash.
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This project is one of 3 Multi-objective Flood Demonstration Catchment Projects funded by Defra in response to the Pitt review of the 2007 summer floods. The project aims to gather evidence on the impact of the stabilisation of bare and eroding peat on upland blanket bog habitat in the South Pennine Moors Special Area of Conservation (SAC). An ecological restoration toolkit used to 'restore' blanket bogs for Natural Flood Management (NFM) benefits was tested within 1ha experimental headwater catchments and attempts were made to identify the mechanisms through which NFM benefits are realised. The restoration method included blocking deep erosion gullies using timber and stone dams and revegetation of bare peat with a facultative grass crop that provided temporary stabilisation of the peat mass. The developing vegetation, in addition to several years of lime and fertiliser, helped to ameliorate environmental conditions and facilitate the subsequent diversification to a community typical of blanket bogs, including Sphagnum mosses. Modelling was carried out in the project both to upscale the results and to indicate how gully blocking techniques could be optimised for NFM benefit. An earlier study had found that water flow velocities were slower through Sphagnum than through grass/sedge vegetation (Holden et al. 2008), meaning that additional benefits are likely to be realised as Sphagnum becomes established. To 'fast track' this evidence, 36,000 sphagnum plants were planted in 2014 into one of the 1ha experimental catchments. Monitoring is ongoing with funding in place to continue until 2021, 9 years post stabilisation and 6 years after Sphagnum application.
Evidence from data collected for 3 years following bare peat stabilisation (involving revegetation with a facultative nurse grass crop) resulted in:
• statistically significant: reductions in peak storm discharge (37%)
• increases in storm-flow lag times (267%)
• increases in water tables (35mm)
• increases in overland flow production (18%)
There were no statistically significant changes in percentage run-off, indicating limited changes to within-storm catchment storage. Although there appeared to be some additional benefits of gully blocking, these were not statistically significant compared with the impacts of revegetation of bare peat alone. Stormwater moved through stabilised catchments more slowly, attenuating flow and storm hydrograph responses. The most important hydrological process response to stabilisation was a reduction in flow velocities associated with increased surface roughness following the establishment of vegetation cover, with these benefits largely realised within one year of intervention. <br>
https://www.therrc.co.uk/sites/default/files/projects/35_moorsforthefuture.pdf
S
The geomorphological assessment of this section of the River Roeburn is poor. Migratory fish are only ever able to get above this ford if floods coincide with the time they wish to run (which is rare).
The Source to Sea funded project was put together to replace one of the pipes with an over deep box culvert which will allow migratory fish to pass through and gravels substrate to move downstream improving habitat there. This project will meet the WFD requirement to remove/ease manmade barriers, and ensure this section of the river is in good ecological condition. +
R
The goal of the Dutch Room for the River Programme is to give the river more room to be able to manage higher water levels. At more than 30 locations, measures will be taken that give the river space to flood safely. Moreover, the measures will be designed in such a way that they improve the quality of the immediate surroundings. The Room for the River programme will be completed by approximately 2015. +
S
The goal of the project was de environmental recovery of Segura River in Murcia, Spain.
Over the years, river mud has been accumulated causing problems both in wildlife’s habitat and in surrounding population because of the river flow reduction and the bad odor generated by the river mud, respectively.
This project has used bioremediation in order to reduce organic component of the river mud and, therefore to reduce the mud odor. Due to bioremediation, the dredging of the river has not caused odor problems to the population +
A
Austria cross-border section - River widening measure Gosdorf II (ETZ-Project “DraMurCi” 2009-2013) +
The goal of this measure is an about 900 m long widening, a few meters downstream of the measure Gosdorf I, which was implemented in the first border-Mur-project (an Interreg IIIa project). The extension of dissolving the "shore corset" of the Mur and the initiation of typical river habitats shall promote the dynamic development and contribute to a fully revitalised section. At normal water levels the side-arm serves as a retreat area for small fish species in the river Mur (standing water zone). +
I
INTERREG MED WETNET – Negotiated Planning Agreement “Wetland Contract of the Caorle lagoon system” +
The great importance of testing the wetland contract of the Caorle Lagoon System as a voluntary, inclusive and integrated governance process emerged from the observations that many public bodies have competences in the management of wetlands, agricultural lands, fishing areas, navigation, hunting, environmental protection, etc. and there is a clear lack of coordination capable of defining the common interests of resources users.
The participative process developed between September 2018 and October 2019 engaged around 50 stakeholders that were previously identified and mapped. According to the path established by the Project, it began with a detailed analysis of the context and with public conferences with experts, addressed to the various stakeholders in order to clarify the main issues emerged in the first general meetings and in the previous attempts to start a similar initiative. The regulatory framework, the state of conservation of wetlands, the composition and structure of the local community and of interest groups were analysed. These preparatory activities were relevant in order to identify the main potential critical points of the process, choose the objectives to focus on the participatory process, establish the relationships between the interested parties and know their interests.
The regional government, the municipalities, the reclamation consortium, associations of the various professional categories, environmental associations, fishermen and hunters were the main actors in the process. The goal was to reach a negotiated agreement in compliance with the national and regional legal framework.
The process has allowed the creation of synergies between the various territorial actors and has started a comparison between different regional planning tools, which in turn refer to their own governance processes. The overlap of the Wetland Contract in the respective processes is a positive result that allows to give importance and visibility and helps to prepare the ground to guarantee a governance approach after the end of WETNET.
The participatory process developed through the definition of a Documents of Intent (MoU), an initial workshop (according to the method of EASW), 4 main territorial laboratories (focus groups) and a series of face-to-face meetings held throughout the whole process. A "long-term strategic scenario" obtained by consensus and negotiation between the main public entities with expertise in the various sectors was presented and discussed. The territorial laboratories were oriented to manage four main axes: governance, environment, socio-economic development, hydrology and water management. General assemblies focused on sharing the common objectives and settling disputes between stakeholders on critical issues, laying the foundations for an open discussion.
Some difficulties identified during the participatory process were the low involvement of some relevant stakeholders at the management level, the difficulty of some subjects to submit proposals. Some other difficulties emerged in gaining confidence from the most sceptical subjects and convincing some institutions to participate because they were not accustomed to sharing information with other parties.
Anyway, the comparison and conflicts between the interested parties have been less frequent than expected.
At the end of the process, the most relevant results are:
• Improved governance - based on a more transparent and inclusive governance model that goes beyond the previous excessively separate governance schemes.
• Empowerment of the local community - through the creation of new channels for the exchange of knowledge and the preparation of concrete actions.
• A new common vision of the future scenario trend was shared.
• Greater awareness of local stakeholders on the fragility of the wetland system and pressures on ecosystems;
• Empowerment of local stakeholders to monitor and preserve the quality of the wetland;
• Improvement of the dialogue between different interest groups;
• Greater awareness of decision-makers on the importance and effectiveness of the governance process.
• Wetland Contract of the Caorle Lagoon System - adapted to the Italian national legislation in the form of a negotiated agreement. Digital signing phase has started on October 30th, 2019.
• Program of actions (Action Plan) - based on a shared vision and operational objectives to improve governance related to the management of water resources, outlining the responsibilities for the implementation of actions aimed at protecting the environment, economic development and governance. It includes 55 actions:
- 25 relating to defining and recognizing a "representative institutional model" of single reference for the coordination of the various actors, by stimulating and activating actions for the management, protection, in the Caorle lagoon system;
- 2 relating to ensuring the hydraulic protection of the area from the risk of flooding and sediment from the canals, as well as from the upstream inputs;
- 2 relating to creating a network of meters to monitor all the data needed to define and know the current lagoon dynamics, in order to plan and plan the interventions on an extended and integrated knowledge base;
- 11 related to establishing an operational programme that takes account of all components of the system, through an integrated approach capable of restoring lagoon dynamics, ensuring and consolidating the protection, promotion and development of the wetland area;
- 15 related to consolidating and/or promoting instruments and actions for the protection and enhancement of the territory, as well as for the protection of habitats.
The main expectations and challenges after signing the Wetland contract are:
• A better definition of the structural and non-structural actions of the plan, of the priorities and of the financial resources available with no need to start time-consuming procedures.
• Early implementation of actions that don’t require financial resources.
• Updating and monitoring the implementation of the program of actions.
• Activating changes in the wetland governance framework, as well as enhancing the harmonization between local and regional regulatory framework;
• Facilitating the implementation of the action plan through local incentives and regional funding requests.
• Capitalizing the hard work done for the definition of the Contract and the program of action, through their implementation in the next years.
One of the main features (and bets) of the wetland contract of the Caorle Lagoon system is the postponement of the final choice of those responsible for the actions identified in the action plan and the identification of the sources of funding.
The choice was dictated not only by the strict terms for signing the contract, but also by the will to test a different way of defining and implementing individual actions.
This is a way in which none of the actions identified in the participatory process can be set aside, shifting over time the very delicate and time-consuming phase of definitively identifying those responsible and the resources that may not actually be immediately available but may become available in the future.
R
The habitat enhancement work at Shelley was implemented with a view to improving the ecology of the River Brett. The work, which incorporated a variety of techniques including flow deflector installation, berm creation, pool & riffle formation and river bank reprofliing, was part of a wider scheme of works undertaken on the River Stour and its tributaries in 2014. +
S
The habitat in the Barkston Reach was also poor due to the effects of straightening, dredging and impoundment. Siltation of the over-wide riffles and the lack of cover for juvenile and adult fish were identified as key issues and addressing these was the main focus of the enhancement work.
Project Objectives
*To modify the bed structure and improve in-stream habitats for fish and invertebrates, including native white-clawed crayfish.
*To stabilise eroding riverbanks and reduce fine sediment inputs caused by fluvial processes.
*Trap mobile fine sediments from agricultural and other sources.
The enhancement works were planned in two phases and designed by Environment Agency staff in consultation with Grantham Angling Association Fly Fishing Section (GAAFFS) and the riparian landowners.
The Enhancement Schemes
The principal function of the works is to create sections of 2-stage channel where the river has been widened and deepened. Here a variety of channel narrowing structures have been installed just above the normal water level to create a low flow channel, but are readily over-topped as the water level rises to ensure that the capacity of the channel is not compromised. Techniques include brushwood mattresses and enclosures, log flow deflectors and vanes and tree management. +
The harbour arms at the seaward entrance of Shoreham Harbour in West Sussex represent a major obstruction to the natural process of littoral drift along the Sussex coast. Without action, foreshore levels to the east of the harbour would quickly drop to levels that threaten the stability of seawall structures and the build-up of beach material to the west would form a bar across and block the harbour entrance. Shingle bypassing has been carried out every 2 years since 1992.
Littoral drift has caused the accumulation of material west of the harbour entrance with a corresponding lowering of beach levels to the east. Shingle transfer operations (see Map 1) have (mostly) prevented the collapse of coastal structures in areas of depletion. Collapse of these structures would rapidly endanger the ability of Shoreham Port, Shoreham Power Station and Shoreham Wastewater Treatment Works to function. A collapse would also threaten the A259 and residential properties behind it. +
A
The hydroelectric power plant at the High Rhine is designed as a diversion-channel type. The discharge in the River Rhein is at the moment high, 1610 m3/s (1484 m3/s). The discharge to the fish way is always at the minimum 600 l/s (max 800 l/s). In addition to the main power station (Q = 1000 m³/s) a new second power station (Q = 300 m³/s) was installed at the diversion weir to feed the natural river bed with a sufficient discharge. In the course of this project a permanent near-natural running water, with a length of about 900 m and a discharge of 2-5 m³/s has been installed at the left embankment.
If the discharge in the river is higher than 1200 m3/s then the max discharge is let to the bypass channel.
The total height of 10.4 m is established by a near-nature water course with a slope of 0.8% and a steeper downstream end. At the upper end the water course is divided into two arms: the rock-cascade-pass (Q = 0.8-3.0 m³/s) leads straight onto the river bed at the left bank. The
second arm, designed as a vertical-clot-pass connects the water course with the tailwater of the turbine outlet.
Above the turbine outlet a collection gallery with different fish entrances is installed. The total discharge at the
outlet varies between 0.6 m³/s and 4.0 m³/s. The height difference in the fish ladder steps are 20–30 cm.
Before the (re)contruction of the plant there was insufficient residual water flow (3‐8 m3/s) due to the diversion, section for the existing power plant “Albbruck Dogern”, interrupted continuum by river weir, interrupted fish migration, low fish population and low population of aquatic fauna.
After the contruction work of the plant there has been immediate increase of the residual water flow: 3.8 m3/s to 40 m3/s; from the 1st January 2008 up to 70‐100 m3/s. Creation of a nature like fish ladder with collection gallery, renaturing of former gravel islands, upvaluation of a birdisland. New weir‐power plant extension uses in operation a water flow of min. 200 m3/s. Implementation of the ecological measures lasted until year 2012.
Hydromorfological improvements concerned the connection of the sidewater Alb to the Rhine, creation of a nature like bed structure in the diversion with gravelbars and ecological improvements in the whole area of the river diversion and in the river course under the weir. Also there was ecological improvements of the ecological diversity of the shoreline. Now many migratory fish uses the bypass channel. For example the grayling spawns in the bypass channel.Also the area is open for the residents to walk along the channel. The new chanel is also very attractive for birds and insects.
T
The improvement of the Tolka Valley Park by Dublin City Council along the River Tolka created opportunity to pilot a new piloted approach under Renew4GPP, which is an EU LIFE Project (LIFE09 ENV/BE/000406).
The project aimed to enhance green space in an urban area by demonstrating to local authorities the ecological advantages to prevent erosion using high-quality and 100% biodegradable matting materials. This project also targeted existing fisheries to be improved with an increase of people engagement and the support from the Inland Fisheries Ireland and the Tolka Trout Anglers Association.
This piloted matting approach uses biodegradable weed control matting to be installed in areas of exposed soil. The site is being monitored by the Parks and Landscape Services Division to assess the effectiveness of the matting approach. First results indicate that it is preventing soil loss during flooding, resisting burning and reducing maintenance requirements. +