SLM Database

Water retaining polders to reduce flood risk due to heavy rainfall or runoff at high tide in embanked coastal lowlands. Delineation of the retention area and land use within the retention area was developed in a participatory process with local experts.

• Compiler: Martin Maier
• 06/10/2015 11:21 a.m.

Water retaining polders to reduce flood risk from heavy rainfall or runoff at high tide in coastal lowlands. Alternative production systems will be viable within thesepolders.

• Compiler: Martin Maier
• 03/06/2015 8:49 a.m.

Land reclaimed from the sea – ‘the coastal region in north-western Germany needs to be artificially drained, and this will be an increasing challenge with climate change.

• Compiler: Martin Maier
• 06/10/2015 1:43 p.m.

Water retention polders to reduce flood risk due to heavy rainfall or runoff at high tide in coastal lowlands. The retention polders are used to accumulate organic material for climate change mitigation and enable development of undisturbed natural habitats, rather than for agriculture.

• Compiler: Martin Maier
• 06/09/2015 9:38 a.m.

Peak flow control structures are designed to reduce flow velocities and quantities running down from catchment areas. Leaky dams are peak flow control structures that are made of wood and allow low flows to pass through, but hold back high flows, thus providing temporary storage and enhanced infiltration of flood …

• Compiler: Brigitta Szabó
• 03/29/2022 4:12 p.m.

Sediment capture ponds are constructed and located along networks of ditches which drain watersheds. They slow the velocity of water and cause the deposition of suspended materials. These ponds help to avoid sediment accumulation in the ditches themselves, and can decrease sediment and nutrient pollution of surface water bodies downstream.

• Compiler: Brigitta Szabó
• 03/29/2022 4:09 p.m.

Afforestation is planting trees on previously non-forested land. Trees hold the soil and reduce runoff, and thus prevent erosion of the most fertile layers. It is an effective way to rehabilitate degraded lands, being a nature-based solution which addresses flood and soil erosion impacts.

• Compiler: Brigitta Szabó
• 06/22/2021 11:33 a.m.

Vegetative riparian buffers are strips of trees, bushes and grass alongside surface water bodies such as streams or ponds. Their main function is to provide a natural buffer strip to filter out nutrient and sediment transported from agricultural fields and prevent it reaching the water bodies - as well as …

• Compiler: Brigitta Szabó
• 03/29/2022 4:13 p.m.

Accumulating coarse woody debris in stream beds reduces flow velocity and levels of flood peaks. As a consequence the speed and energy of water flow is reduced, allowing greater deposition of sediments. In addition the technology has ecological advantages.

• Compiler: Brigitta Szabó
• 03/29/2022 4:10 p.m.

Stone Check Dams/Walls, Retainment Walls, and a Water Diversion Wall has been constructed in Nakina Village and Nakina Community Forest to help protect their settlements, agriculture land, forest land, and preserve the hilly landscape. These structures serve to reduce the runoff velocity (lowering the rate of erosion and gullying in …

• Compiler: Jaclyn Bandy
• 07/31/2019 2:53 p.m.