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Building with Nature in TMIJ

Within the TMIJ plans are several elements that utilize elements of the BwN design philosophy. Central in this philosophy is the need for an approach at the system level. By concentrating choices on the system level instead of the individual instruments used, the TMIJ project can is a rare example of systems-based thinking in ecological development. Aside of the systems thinking, several individual measures contain elements of the BwN philosophy, such as:

  • The "Oermoeras" (swamp area)

Part of the plans is the creation of a large-scale newly formed swamp that might help to fight the suspended residue in the lake area. Through natural mechanisms, this residue would settle down within the new swamp. This in turn would make the lake more clear, leading to more attractive habitats.

  • "Luwtemaatregelen"

At several locations, plans are made to create new shallow areas. These areas would be a prime location for new waterplants. These need clear water. By making shallow areas, suspension is limited and clear water is created. Currently a field experiment is being held to determine the effectiveness of these shallow areas.

  • Residue catching pits ("slibvangputten")

By creating large centralized pits out of which materials can be won, it is hypothesized that these pits will naturally fill themselves with suspended materials, leading to an overall decrease in suspended materials. Furthermore, by creating deep pits, the change in temperature within the pits might be beneficial for fish.

  • Oeverdijk

Instead of regular dyke raising, it is suggested to create a new sort of levy: The shoredyke (Oeverdijk). This kind of dyke emphasizes the waterbound shore, which has a gradual increase in slope protecting the waterside of the dyke. Gradual shore increases are better for the ecological system.

None of these measures have been applied in practice yet, the main problem being the financing of the whole project. In subsequent reports, the amount and type of measures is gradually changing, based on a need to cut budgets.

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