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| Waterschap Aa en Maas | |
|---|---|
| Name | Waterschap Aa en Maas |
| Location | North Brabant, Netherlands |
| Area km2 | 2,500 |
| Established | 1995 |
| Predecessor | Waterschap Aa en Maas (merged entities) |
| Headquarters | Den Bosch ('s-Hertogenbosch) |
| Leader | Dijkgraaf |
Waterschap Aa en Maas Waterschap Aa en Maas is a Dutch water authority responsible for flood risk management, water quality, and wastewater treatment in a large part of the province of North Brabant. It administers riverine and polder systems intersecting with the Meuse (Maas), the Dommel, the Aa (Meuse tributary), and numerous tributaries, coordinating with municipal bodies such as Eindhoven, Helmond, Oss, and 's-Hertogenbosch'. The authority interacts with national institutions like the Rijkswaterstaat and regional bodies including the Provincie Noord-Brabant.
The institutional lineage of the authority connects to historic Dutch water boards such as Heemraadschap, Hoogheemraadschap van Delfland, and early medieval polder cooperatives that arose after floods like the St. Elizabeth's flood (1421). Modern consolidation began in the 20th century with reorganizations following frameworks in the Waterschapswet (1991), and culminated in mergers during the 1990s and 21st century influenced by national policy from ministries like the Ministerie van Infrastructuur en Waterstaat. Key governance moments coincide with major events including the Maas River flood of 1993, European directives such as the Water Framework Directive, and national flood safety programs like the Room for the River project.
Aa en Maas covers municipal territories including Eindhoven, Helmond, Veldhoven, Best, Boekel, Uden, Veghel, Grave, Maashees, Ravenstein, and Den Bosch. Its boundaries align with hydrological units around the Meuse (Maas), Dommel, Aa, and smaller streams like the Bylandtse Beek and Run. The catchment interfaces with neighboring authorities such as Waterschap De Dommel, Waterschap Limburg, and Waterschap Rivierenland, requiring cross-jurisdictional coordination on river basins, floodplains, and transboundary issues with the Belgium border region. The landscape comprises polders, riverine floodplains, sandy plateaus of the Kempen, and urbanized zones including industrial areas near Eindhoven Airport and the Brainport Eindhoven region.
The authority is headed by a dike-reeve (dijkgraaf) appointed in conjunction with the provincial executive of Noord-Brabant, operating alongside an elected regional water council (waterschapsbestuur) and an executives board (dagelijks bestuur). Stakeholders represented include agricultural collectives such as LTO Nederland, industrial associations near ASML', municipal delegations from Oirschot and Sint-Oedenrode, and environmental NGOs like Natuurmonumenten and Vereniging Natuur en Milieu. Legal oversight relates to statutes stemming from the Waterschapswet and consultations with the Algemene Rekenkamer for public finance scrutiny. International cooperation occurs with transboundary bodies including the International Commission for the Protection of the Meuse (ICPM).
Primary mandates derive from national and European law, including flood protection, surface water quality, wastewater treatment, and regional water level management for agriculture around De Peel and urban drainage for cities like Helmond. Operational tasks include maintenance of dikes and sluices associated with sites such as the Maaswerken interventions, water purification at treatment plants serving municipalities, and permits for discharges coordinated with agencies like Rijkswaterstaat. Aa en Maas implements water safety plans aligned with the Delta Programme and contributes to compliance with the European Water Framework Directive for chemical and ecological status.
Infrastructure under management includes primary and secondary flood defenses, pumping stations, weirs, sluices, and wastewater treatment plants in locations such as near Veghel and Uden. Key structures interact with large-scale projects like Room for the River measures on the Meuse (Maas) and regional retention basins in former floodplains near Grave. The authority operates monitoring networks for water levels, telemetry systems interfacing with Deltares modelling, and collaborates with Waterschap De Dommel on coordinated pumping strategies. Asset management uses standards influenced by organizations like Kadaster for cadastral mapping and maintenance cycles based on risk assessments following guidelines from the European Commission.
Aa en Maas runs programs for riparian restoration, floodplain re-naturalization, and habitat connectivity to support species present in the region including beaver reintroductions in Dutch projects, bird populations protected under the Birds Directive, and freshwater fish communities targeted by the Habitat Directive. Partnerships with conservation bodies such as Staatsbosbeheer and Natuurmonumenten fund measures for meadow bird habitats, reedbed expansion, and water quality improvements to reduce nutrient loads impacting downstream areas like the Hollands Diep. The authority participates in citizen science and educational outreach with universities like Wageningen University & Research and regional colleges in Eindhoven.
Funding derives from levies (waterschapslasten) charged to households, agricultural enterprises, and industries within its jurisdiction, following tax categories for purification charges (zuiveringsheffing), water system management (watersysteemheffing), and flood defense contributions. Budgetary oversight aligns with provincial auditing bodies and national rules in the Gemeentewet framework concerning municipal interactions. Major capital projects receive co-financing from European funds, provincial grants from Provincie Noord-Brabant, and occasionally from national emergency allocations linked to flood mitigation programs instigated after events such as the Maas River flood of 1993.
Category:Water boards in the Netherlands Category:Organisations based in North Brabant