Low water challenges in Inland Navigation

Low water challenges in Inland Navigation

Marleen Buitendijk

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The beautiful story of inland navigation

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January all dams closed for high water ‐ 7 months of low water period

Bron: Weekblad Schuttevaer

2018 a view in a future with climate change

Foto: Schuttevaer en Evert van Balen3 van 20

Foto: ©lamax/Fotolia

Challenges

• Navigation challenges• River management challenges• Information technology challenges• Ship technology challenges

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Navigation: all actions the skipper must perform to bring the vessel "safely" from the place of departure to the place of arrival.

Navigation

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Meanderende rivier, bron: bron: www.degeo‐online.nl http://somegeographyannalikes.blogspot.com/

Navigating is using the forces of nature.

Skipper “reads” the river

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Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease of the water surface.

Bron: EOC

Current patterns of ships

Ontmoeten

Oplopen

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The squat effect is the hydrodynamic phenomenon by which a vessel moving quickly through shallow water creates an area of lowered pressure that causes the ship to be closer to the riverbed than would otherwise be expected.

Bron: STC

Current patterns of shipsSquat

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Bron: Jan Boer

Nautical Challenges

• Keel clearence• Narrow fairway• Congestion• Complex navigation

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Challenges in River management


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Inland Navigation needs robust and climate proof waterways• Enough depth• Even current• Flat riverbed• Prevent erosion of the riverbed• Prevent sandbanks• High‐ and low water resistent

Robust and climate proof waterways

Foto: Gelderlander11 van 20

Bron: Gelderlander

Water level Waal lower than expected

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800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

Minst ge

peilde diep

te (cm)

Debiet bij Lobith (m3/s)

Debiet v.s. MGD op de Waal

MGD 2016MGD 2017MGD 2018280 cm1020 m3/secLinear (MGD 2017)Linear (MGD 2018)

Bron: Cornelis van Dorsser

Bron: Cornelis van Dorsser

Depth Waal – MGD 2,80m

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Foto: www.h2owaternetwerk.n

Store and keep water in the system

• Improve pomp capacity by locks • More locks with water basins• Buffering of water in the system (extend the water cycle)

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Integral River Management - IRM

Foto: www.h2owaternetwerk.n15 van 20


Challenges in Information technologies


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Draught information – MGD en MGD

• Realtime draught data• Connecting data – Covadem, authorities, dredging compagnies• Long term water forecasts• MGD in more places• Early publicity in a wide range 17 van 20


Challenges in Ship technology

• Navigation challenges• River management challenges• Information technologies challenges• Ship technology challenges

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What can the inland shipping industry do?

• Decrease depth• Increase the turnover rate• Increase capacity ‐ push barges• Build ships that are more resistant to low water levels• Alternative propulsion techniques

Bron:www.stad‐en‐groen.nl19 van 20

There is enough space on the waterways to contribute to society wide issues as road traffic congestion and CO2 reduction. But will there be enough water in the river to make it happen?

Bron: AD 20 aug 2018 © Ricado Smit20 van 20

Low water challenges in Inland Navigation

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