Case study:Welton Farm Landfill/Riverbank Works

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Location: 56° 35' 8.51" N, 3° 18' 24.57" W

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Flood risk management, Habitat and biodiversity
Country	Scotland
Main contact forename	Chris
Main contact surname	Chalmers
Main contact user ID
Contact organisation	PKC
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The River Ericht is part of the wider Tay catchment and has a steep, flashy catchment with an area of 432km2 to its confluence with the River Tay. The project was located 2km downstream of Blairgowrie, Scotland and located within a Special Area of Conservation (SAC), UK0030312. The project was undertaken on a historic landfill site on the south riverbank of the River Ericht. There is considerable ecological variety in the Tay catchment, resulting in the Tay supporting the full range of salmon life-history types found in Scotland, with adult salmon entering the River Tay throughout the year to spawn in different parts of the catchment. In addition, Otter, Beaver, Bird and three Lamprey species (Sea, Brook and River) were found within the SAC.

The project consisted of landfill and riverbank remediation work. Landfill material was polluting the River Ericht impacting the watercourse and subsequent SAC following numerous spate events in 2015/16. This had a direct impact upon the ecology and environment. The aim of the project was to prevent further landfill material entering the watercourse and to install protective measures to protect the riverbank and reduce further erosion.

Monitoring surveys and results

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The project has only recently been completed and the full benefits have yet to be quantified. The willow and grass seed has started to grow following a mild autumn in 2018 and the integrity of the riverbank has been tested following a number of spate events in December 2018 and February/March 2019. A monitoring regime has been set up in order to assess the longer term performance of the scheme.

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Historic Landfill

Root Wad Installation

Project Completion

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name 6535 WFD water body codes WFD (national) typology WFD water body name River Ericht Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation EU - Special Area of Conservation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information