]> 2026-04-25T21:44:28+00:00 Case study:Burn of Mosset, Forres 500 en Royal Haskoning- Forres Flood Alleviation Scheme Moray council- Forres FAS Approved Create breaches in the bank Channel naturalisation Royal HaskoningDHV Great Britain No No Yes false P5130077.JPG P5130108.JPG P5130109.JPG P5130062.JPG P5130064.JPG Chapelton Dam control structure (2013) The Burn management works (2013) Woody material and sediment is now effectively being stored in the floodplain Chapelton Dam (2013) Chapelton Dam flood storage area (2013) No Overall this scheme illustrates what can be achieved when working with natural sediment transport processes in flood storage zones. In 2010, the Saltire Society of Scotland in association with the Institution of Civil Engineers awarded the Forres Flood Alleviation Scheme its 'Environmental Sustainable Construction' commendation. 57.595334614217,-3.591924123466 Paul Royal HaskoningDHV Winfield Create breaches in the bank,,Floodplain reconnection, Riparian planting,,Channel naturalisation, ,,, Approximately one year after the banks were breached in September 2009, the channel experienced an estimated 30m3/s flood flow (of the order of a 1 in 10 year event). The stone protection at the upstream breach was partially washed out, as anticipated. The breach enlarged such that the majority of the flow was diverted along the new route after the flow subsided. The result was rapid development of river features including the formation of an outwash fan. Some ecological degradation has occurred in the short term as the old channel is now dry except during very high flow events. Small on-going adaptive management is predicted to be necessary in the short to medium term until this modified river system becomes better established. 5994 Burn of Mosset- sustainable sediment and flood management by reconnecting the river with its floodplain and working with natural processes 2008-12-31Z 2454831.5 P5130092.JPG 2008-01-01Z 2454466.5 Complete The Burn of Mosset is a small gravel bed stream draining an area of 49km2. A Tributary of the River Findhorn, it flows north through the town of Forres before entering Findhorn bay. The town of Forres has a long history of flooding from the burn, with six flood events causing serious damage to property or disruption in the last fifty years. The new Flood Alleviation Scheme (FAS) took two years to complete. It included the construction of an earth-filled embankment dam designed to allow for discharges up to 8.5 m3/s to flow through Forres, with excess floodwater temporarily stored behind the dam. In addition to this, the upstream storage area has been designed to create an extensive natural sediment accretion zone (for sand, gravel and large wood). This will reduce the risk of sediment or other debris blocking the dam control structure. The scheme also aimed to create a mosaic of river and floodplain habitats, by working with natural processes to develop a multi-thread (anabranched) system. This was achieved by breaching the existing embanked channel which ran around a field boundary at two points, allowing flow to spill out across the open field, before re-joining the original channel just upstream of the dam. Tress were planted across the site to create a wet woodland habitat. This project is part of the UK River Restoration Center's manual of river restoration techniques (update due to be published in late 2013). Burn of Mosset, Forres burn of mosset, forres No 500 Findhorn Scotland RBD Floodplain reconnection Riparian planting Burn of Mosset burn of mosset Forres Flood Alleviation Scheme forres flood alleviation scheme 1300 Burn of Mosset Fisheries Flood risk management Habitat and biodiversity Hydromorphology 116 Lowland Small Siliceous 23021 Mosset Burn Altyre to Forres 2013-07-10T17:00:33Z 2456484.2087153 2017-06-05T10:00:59Z 2457909.9173495 Burn of Mosset, Forres 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Burn of Mosset, Forres]] [[Subcatchment title::Burn of Mosset]] Burn of Mosset, Forres# QUERY61ffd45d0b07a1055291eb7eb74137b9