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Major threatening hazards of ecosystem are identified. A management plan for the protection and sustainable development of the lake together with a monitoring plan for the natural environment and of the effectiveness of the management plan is proposed.

The aim of this project is to bring an ecological balance to the lake so the ecosystem†™s functions will continue in depth of time. This will ensure the stability of the species populations and the qualifying habitats.

In Matsalu National Park there is a former coastal meadow site (Naturea 2000 and Ramsar site) next to a big Salmi coastal meadow with many priority species. On the site the old non-functioning small ditches were closed and scraped to restore the wetland hydrology and breeding and feeding grounds for waders and amphibians.
Before the restoration works the area was used mainly for bovine grazing and the restoration did not change the conditions for that. However, due to the activities drinking water will be better available for the cattle.

Nature conservation expertise about possible changing of coastal meadow ditches in order to create more favourable habitat conditions for protected species in 6 pilot areas in Lääne and Hiiu counties.

Construction project of the restoration works

The core of the activities carried out on Osterbek river was the installation of flow control arms at mean water level.
Due to the width of the bundle of sticks of 2 to 2.5 m, they should contribute to a significant narrowing of the broad streambed. They were attached to three pegs that were fixed at the ground. In order to avoid under- or backflushing, the brushwood were strengthened with stones, coarse and fine gravel. A total of 14 flow control arms were installed at equal distances approximately transverse to the direction of flow on the left and right bank . In a wide section an island of gravel and coarse of about 15 m was applied.
Also in the Middle Bille flow control arms were installed consisting of dead wood, stones and gravel. The brushwood was shortened to a length of about 1 m and transversely and with a slight tilt attached to two pegs in the sole. The height of the installment was also based on mean water level

Auch in den dicht besiedelten Bereichen einer Großstadt ist eine wirksame und kostengünstige Umsetzung der Ziele der Wasserrahmenrichtlinie möglich. An jeweils einem Gewässerabschnitt am Osterbek und der Mittleren Bille in Hamburg werden im Rahmen der „Gewässernachbarschaftstage“ die Gewässerbett- und Uferstruktur verbessert, um den Lebensraum für standorttypische Tier- und Pflanzengesellschaften aufzuwerten und eine größere Strukturvielfalt zu erreichen

Reestablish the stream channel natural conditions; correct hydrological and hydrogeological parameters regarding a better soil retention, lower channel discharge, higher groundwater level; and restore the biodiviersity of fauna and flora

Summary note on the NWRM appraoch used at Sutcliffe Park and the associated benefits observed.

Summary of restoration work as part of flood alleviation scheme

River Quaggy Flood Alleviation Scheme overview note

The SMIVAL (Syndicat Mixte Interdépartemental de la Vallée de la Lèze - an association of 24 communes localised in the Lèze's valley) has been created in 2003. It is responsible for leading, for defining and for implementing actions for a qualitative and quantitative use of the Lèze and its tributaries and for preventing its floods. For preventing floods, an actions programme (called PAPI) has been set up. One action refers to the plantation of floodbreaking hedgerows in order to slow down the flood peak.
Hedgerows are located across the flooding plain of the river and they are regularly spaced every 300 to 500 metres. Partially obstructing the flow, hedges can slow running water to dissipate the force and reduce the impacts of flooding. This is a cumulative effect that is measured across the entire valley, with a significant decrease in rates. According to thre PAPI, 75 km of floodbreaking hedgerows were initially planned to be planted until 2016.

Raison première de la création du SMIVAL, la prévention des inondations constitue une large majorité des activités du syndicat. Implanté localement, le SMIVAL constitue une interface entre les habitants, les élus et les administrations de l’État et des collectivités. Son rôle porte ainsi sur la mise en exergue des besoins du bassin, sur la déclinaison locale des politiques nationales et régionales, sur la mise en œuvre d’aménagements et sur la sensibilisation des populations et des élus locaux.

Raison première de la création du SMIVAL, la prévention des inondations constitue une large majorité des activités du syndicat. Implanté localement, le SMIVAL constitue une interface entre les habitants, les élus et les administrations de l’État et des collectivités. Son rôle porte ainsi sur la mise en exergue des besoins du bassin, sur la déclinaison locale des politiques nationales et régionales, sur la mise en œuvre d’aménagements et sur la sensibilisation des populations et des élus locaux.

Raison première de la création du SMIVAL, la prévention des inondations constitue une large majorité des activités du syndicat. Implanté localement, le SMIVAL constitue une interface entre les habitants, les élus et les administrations de l’État et des collectivités. Son rôle porte ainsi sur la mise en exergue des besoins du bassin, sur la déclinaison locale des politiques nationales et régionales, sur la mise en œuvre d’aménagements et sur la sensibilisation des populations et des élus locaux.

Raison première de la création du SMIVAL, la prévention des inondations constitue une large majorité des activités du syndicat. Implanté localement, le SMIVAL constitue une interface entre les habitants, les élus et les administrations de l’État et des collectivités. Son rôle porte ainsi sur la mise en exergue des besoins du bassin, sur la déclinaison locale des politiques nationales et régionales, sur la mise en œuvre d’aménagements et sur la sensibilisation des populations et des élus locaux.

The WETLIFE project aimed at reversal of negative changes in Amalva and Ž’uvintas mires. Restoration of hydrological conditions necessary for regeneration of mire habitats was the main key to reaching the aim. Additionally, the project had a goal to facilitate a shift in agricultural practices on peatlands in order to improve conditions for biodiversity and reduce rate of peat mineralization with all related environmental consequences. Finally, the project expected to raise awareness about wetlands and to serve as an example of successful wetland restoration and more sustainable use that could be replicated in other parts of the country.
see also project video: http://vimeo.com/41861643

The NWRM aims at restoring the natural flow of the river whilst increasing the possibility to buffer the water.

In de Vallei van de Grote Nete tussen Nijlen en Geel, krijgt de kronkelende rivier opnieuw meer ruimte, via een combinatie van de aanleg van een winterbedding en gecontroleerde waterbuffergebieden. Dat zijn GOG's zonder ringdijk. De winst is dubbel: de kans op overstromingen is kleiner en geleidelijk kan er weer natte natuur groeien, in de vorm van waardevol wetland.

Eén van de hoekstenen van het hedendaagse waterbeleid is het principe ‘vasthouden-bergen-afvoeren’ zoals ook blijkt uit het bekkenbeheerplan. Door water maximaal vast te houden aan de bron of ter plaatse te laten infiltreren, wordt wateroverlast niet langer afgewenteld op stroomafwaarts gelegen gebieden. Diezelfdestrategie moet ook voor een oplossing zorgen in de strijd tegen verdroging die in het licht van een mogelijke klimaatsverandering wel eens belangrijk zou kunnen worden.

Presents an overview of the agricultural impact assessment for the Sigmaplan as a whole

Since 1960`s in Poland a phrase „small retention† has been used although it has been unknown in other countries. †œSmall retention† means various forms of human activity aiming towards limiting the fast water runoff after snow melting and heavy rains. It is believed that water that has been retained in periods of its excess can supply water courses during summer. It can also be used for agricultural purposes as it increases water availability for crops and improves biodiversity of rural areas. Many different methods of water retention have been defined. Among others, increase of potential retention of surface waters can be achieved by construction of reservoirs or damming on rivers and lakes. Ground water retention capacity can be improved by increasing recharge of aquifers and improvement of soil structure in the aeration zone. Due to the form and way of implementation of small retention measures they can be divided into technical and non-technical measures. In other words, small retention can be defined as a set of measures aiming towards reconstruction of natural retention in the catchment that has been modified or destroyed by human activity. In this paper, it has been stressed that activities and tasks undertaken in Europe in recent years under phrase †œincrease of natural retention† can be covered by the definition of small retention.

Small water reservoirs play important role in rural areas. They used to be very popular, but most of them
have been devastated in the last century. It is worth to restore them and to construct new ones. Very small reservoirs
(ponds) can be constructed in economical and cost efficient way by individual farmers. In regard to damming
below 1.0 m and to reservoirs situated outside protected areas, the permission for construction and the environmental
impact assessment is not required. However, one should always keep in mind that even the smallest
construction is the work of engineering and should be performed in accordance with the current standards.
The increase of available water resources and improvement of water quality demand various measures including
those aimed at reducing and limiting water runoff and pollutants transport from the river basins. One of
the methods to improve the structure of water balance and the amount of water in rivers is the construction of
a large number of small reservoirs, wetland reconstruction etc. Such reservoirs may be divided to: recreational,
floristic and faunistic conservation sites, swimming pools, water quality protection (constructed wetlands) and
infiltration reservoirs.
Reservoirs can have many functions of the economic and natural character. If they are designed and constructed
properly they can be a valuable element of the natural landscape in rural areas. Basic data for designing
of small reservoirs serving mainly recreational (decorative) purposes and those used for water treatment and
ground water recharge are given in the paper.

An increase of water retention in the programmes of small retention in the country to the
year 2015 is estimated at 1141 million m3. It means annual mean increase of retention capacity by
c. 60 million m3. Accomplishment of relevant actions in the years 1997†“2007 allowed collecting
57 million m3 in lakes, c. 56 million m3 in artificial reservoirs, 18.5 million m3 in fishponds, c. 10.5
million m3 with the channel retention and over 2 million m3 in other investments. It makes total increase
of water retention by 142 million m3 which is 12.4% of target retention and the mean annual
increment of c. 13 million m3.
The paper presents volumes of retained water, sources and structure of financing, mean unit costs
of retention increments and the increase of retention capacity in particular voivodships (acc. to new
administration division) in the years 1998†“2007.

Se ha realizado un análisis de la legislación vigente con objecto de evaluar en qué grado es contemplada la recarga artificial de acuíferos. Esta se ha llevado a cabo en las principales disposiciones legales, tanto en el ámbito comunitario como en el nacional, relativas a aspectos hidrogeológicos y medioambientales.