Case study:Klassiek beekherstel Astense Aa

From RESTORE
Jump to: navigation, search
0.00
(0 votes)


To discuss or comment on this case study, please use the discussion page.


Location: 51° 25' 17", 5° 46' 24"
Edit location
Loading map...
Left click to look around in the map, and use the wheel of your mouse to zoom in and out.


Project overview

Edit project overview
Status Complete
Project web site
Themes Environmental flows and water resources, Habitat and biodiversity, Hydromorphology, Water quality
Country Netherlands
Main contact forename Waterschap
Main contact surname Aa en Maas
Main contact user ID
Contact organisation Waterschap Aa en Maas
Contact organisation web site http://www.aaenmaas.nl/
Partner organisations STOWA
Parent multi-site project
This is a parent project
encompassing the following
projects
No
This case study hasn’t got a picture, you can add one by editing the project overview.

Project summary

Edit project overview to modify the project summary.


De Astense Aa was een rechte beek met steile oevers. Door deze eigenschappen wordt water snel afgevoerd. Dit zorgt voor wateroverlast bij extreme neerslag en voor droogte in periodes waarin het weinig regent. Dit is geen ideale situatie. Daarnaast was de situatie ook niet zo aantrekkelijk voor planten en dieren. Daarom richt het waterschap Aa en Maas de Astense Aa in fases opnieuw in.

Monitoring surveys and results

This case study hasn’t got any Monitoring survey and results, you can add some by editing the project overview.

Lessons learnt

This case study hasn’t got any lessons learnt, you can add some by editing the project overview.


Image gallery


Astense Aa tijdens de herinrichting
Astense Aa na de herinrichting
Astense Aa 1 jaar na herinrichting
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district Astense Aa
River basin Maas

Subcatchment

River name
Area category 10 - 100 km²
Area (km2) 57
57 km²
5,700 ha
Maximum altitude category Less than 100 m
Maximum altitude (m) 20
20 m
0.02 km
2,000 cm
Dominant geology Siliceous
Ecoregion
Dominant land cover Intensive agriculture (arable)
Waterbody ID



Site

Name Astense Aa
WFD water body codes NL38-4K
WFD (national) typology R4
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present No
Species of interest
Dominant hydrology
Dominant substrate Sand
River corridor land use Intensive agriculture (arable)
Average bankfull channel width category 5 - 10 m
Average bankfull channel width (m) 6
6 m
0.006 km
600 cm
Average bankfull channel depth category 0.5 - 2 m
Average bankfull channel depth (m) 0.69
0.69 m
6.9e-4 km
69 cm
Mean discharge category 0.1 - 1.0 m³/s
Mean annual discharge (m3/s) 0.25
0.25 m³/s
250 l/s
Average channel gradient category Less than 0.001
Average channel gradient 0.000375
Average unit stream power (W/m2) 0.153234375
0.153 W/m²


Project background

Reach length directly affected (m) 3400
3,400 m
3.4 km
340,000 cm
Project started 2011
Works started 2012/01/01
Works completed 2013/12/31
Project completed
Total cost category
Total cost (k€)
Benefit to cost ratio
Funding sources

Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring Waterschap Aa en Maas



Reasons for river restoration

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project Herinrichting


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern
Other Traditioneel beekherstel
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Physico-chemical quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Any other monitoring, e.g. social, economic

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



Additional documents and videos


Additional links and references

Link Description

Supplementary Information

Edit Supplementary Information