Water, Agri-aquaculture Inland shore concept: Water retention combined with water level fluctuation as a basis for a revenue model Roel Doef (Rijkswaterstaat), Remco van Ek (Deltares), André Oldenkamp (DeRuimte-Advies), Wouter de Zeeuw (FOM consultants), Rein Kruk (Province Noord-Holland), Karel Bruin Baerts (HH Hollandsnoorderkwartier) 11 april 2018 September 9th 2014

Content Inland shore concept? Wieringermeer Building pilots Concluding remarks 11 april 2018

1. Inland shore concept Lake IJssel Many challenges: Water safety Fresh water supply Water quality objectives Fish stock decline Nature (protection, development) Water recreation (€) Autonomous developments 11 april 2018

1. Inland shore concept Flexible water storage with new functions Inland water storage with significant water level fluctuation Room for water storage to prevent flooding and water scarcity “Water is an opportunity” New sustainable areas for work and living Innovative combinations: water storage, food, nature, recreation, living, working Dynamic landscapes, room for natural processes, CO2 sink Opportunities for WFD, Natura2000, new habitats Opportunities for recreation April 11, 2018

1. Inland shore concept Pilot Koopmanspolder: Fish, Nature, Landscape Source: Kwint van den Berg, www.bergrecordings.com

1st polder in Lake IJssel (200 km2) Constructed during 1927-1930 2. Wieringermeer Pilot Wieringermeer: Agriculture, Aquaculture, Recreation 1st polder in Lake IJssel (200 km2) Constructed during 1927-1930 Land surface ~ 4 m below Lake level Upward seepage, salt load After WW-II: food production Mono-functional: agriculture April 11, 2018

2. Wieringermeer Urgency for change? Short term: Up-scaling: more efficiency, but low job creation Population aging: youth leaves area Regional economy not strong Loss in facilities, decrease in livability Long term: Autonomous developments: water level rise, salt load Climate change: more extreme weather events Globally: water and food becomes more scare

3. Building pilots Bottom up approach Food production is starting point Open process, trust A concept, not fixed ideas Small scale experiments Extend from there

3. Building pilots Dike pioneers Sun farming Aqua-test ribbon Agro-recreation

3. Building pilots Climate landscape agriculture – living - economy Water storage & new economic activities Protected shoreline: econ. activities Open water

2014 3. Building pilots Roel Doef RWS WVL Theo van de Gazelle Plv DG RWS Rein Kruk Prov Noord-Holland Karel Bruin HHNK Andre Seinen Meromar BV Andre Hiemstra Hiemstra BV Gerard Manshanden Fishflowinnovation BV Marc van Rijselbergen Zilt proefbedrijf BV Ton Garritsen RWS IJsselmeer Remco van Ek Deltares April 11, 2018

3. Building pilots Innovation in The Golden triangle Public authorities Knowledge institutes Ambition Knowledge Budget Shared vision, Linked objectives Deltares Contributes to cases Water system knowledge Monitoring & evaluation Funding activities Private sector

3. Building pilots 4 different cases Mitten crab cultivation Floating crop cultivation Saline crop cultivation Recreational fish ponds

20 ha farmland (incl farm) Significant budget 3. Building pilots 20 ha farmland (incl farm) Significant budget First case: ‘Mitten crab’ work in progress 2014-2018 April 11, 2018

4. Concluding remarks From theory to practice Link long term vision to short term objectives. A good idea is nice, but you need strong partners for action. Building a good consortium takes time. Storyline must be simple and easy to understand. Invest in PR and communication. Think in opportunities, not in problems. April 11, 2018