Management and
maintenance
Beheer en Onderhoud

Questions
• What is meant by management
(beheer) ?
Regulations (regelgeving)
• What is meant by maintenance
(onderhoud) ?
Activities (activiteiten)

regulations
• European
• EU WFD (Water Framework Directive)
• etc
• State
• In the Netherlands: WB 21e eeuw
• etc
• Province, District or County
• In the province of Zeeland: Verordening
waterhuishouding Zeeland (Regulation on
watermanagement Zeeland)

regulations (continued)
• Agreements
• In NL: NBW (National management
agreement on water)
Main issues:
• Compliance with NBW
• Compliance with groundwater and surfacewater
regimes
• In NL: Waterschap
• Water management plan
• “Keur”: Set of regulations (Zones)
• Own policy
• Management of fisheries

What needs to be managed
and maintained in a
watersystem?

Watermanagement components:
• Surfacewaters
• Beds
• Embankments, landing-stages, piers
• Verges
• Structures
• Culverts, bridges, siphons
• Waterpumps, locks and sluices
• Weirs
• Dredgings depots
• Waterlevels

Watermanagement
instruments?

Management instruments in a
“waterschap”
• “Legger”
• Administrative set , after public consultation
• “Peilbesluit”
• Administrative set , after public consultation
• “Keur”
• Administrative set , after public consultation

Surface water body
Oppervlaktewaterlichamen
Protection zone > 7 m Protection zone > 7 m
edge

Types of watercourses (ditches)
Watergangen
• Primary
Supply (aanvoer) and Discharge (afvoer)
Discharge area (afvoergebied) > 25 ha
Storage (berging)
• Secondary
Supply (aanvoer) and Discharge (afvoer)
several Plots / Parcels (percelen)
Storage (berging)
• Tertiary
Mainly storage (berging)

“Legger”
• Situation of the watersystem
• Who is managing
• Who is maintaining
• Main dimensions of watercourses
• Main dimensions of structures
• Maps
• Website (dutch) showing “Legger”
http://geoinfo.scheldestromen.nl/

“Keur”
• Regulations on what is allowed,
prohibited and ordained in a
watersystem
• Maintaining
• Use
• Grounds for release
• Spacial claims

“Keur” (continued)
• Spacial planning
• Discharge
• Storage
• “Keur”zones
• Waterquality
• Release on contract (permits)
• Compliance checks (fines)

“Keur” (continued)
• Protection zone (for maintenance)
adjacent to ditch
• Minimal 7 m at both sides of surface
water. Can be different with permit.
Website keur (dutch)
http://decentrale.regelgeving.overheid.nl/c
vdr/XHTMLoutput/Historie/Waterschap%2
0Scheldestromen/273192/273192_1.html

“Peilbesluit”
• Which levels where
• Potential deviations (afwijkingen)
• Basis for choice surface water level
(In NL: GGOR = Preferred groundwater
and surface water regime)
• Maps

What are the maintenance
activities for waters?

Maintenance activities for waters:
• Dredging (quantity and quality)
• Mowing (quantity ansd aesthetic)
• Reconstruction of sidestructures
• Reconstruction embankments
• Remove new growth on natural
embankments

Maintenance activities for waters:
Points of attention:
• Flora and Fauna regulations
• Quality of offcoming materials
• Dumping locations (obligation to receive)
• Transportcosts
• Accessibility
• Harvest time
• Temporarily a different water level
• Equipment
• Mobile
• Sailing (with dumpship or suctionpipe)

What are the maintenance
activities for structures?

Maintenance activities for structures :
• Remove dredgings
• Repair structures where needed
• Check functions and operations