]> 2026-04-13T13:20:51+00:00 Case study:Knock Burn low flow channel 500 en Approved Less than 0.5 m 0.001 - 0.01 2 - 5 m Creation of low flow channel Yes Yes No Improvement Yes Fish,Yes,Yes,Yes,No,No,Improvement Macrophytes,Yes,Yes,Yes,No,No,Improvement Fish Macrophytes No Re-meandering Rivers Agency Northern Ireland (DARDNI) Department for Agriculture and Rural Development - Rivers Agency Yes No Yes true Yes Yes No Improvement Yes Channel pattern/planform,Yes,Yes,Yes,No,No,Improvement Channel pattern/planform No No Judith Bankhead Less than 1 k€ Department of Agriculture & Rural Development Rivers Agency Department of Agriculture & Rural Development Rivers Agency Be opportunistic. The upper stretch of the work has been more successful than the lower reach, probably due to a backwater effect from a pond at the downstream end, and partially due to the reduction of energy through the full reach. Since completion in 2011, no further maintenance work has been required (up to 2014), which is a cost savings for the Agency. The technique will be used again in future projects. None 54.599451469902,-5.8391636610031 judithbankhead Judith Rivers Agency Northern Ireland (DARDNI) Bankhead 0.1 - 1.0 m³/s Creation of low flow channel,,,Re-meandering, ,,, Judith Bankhead Less than 1 k€ Department of Agriculture & Rural Development Rivers Agency Pre and post photographs were taken. A standard maintenance post audit form was completed 9 months after the project was completed. Annual photography is used to monitor the project. Assessment carried out during photography shows that the channel is maintaining itself overall, with fish present (which had not been the case before). Wetland vegetation has developed on the secondary channel, helping to stabilise the silty substrate Judith Bankhead 21364 Knock Burn low flow channel post works Judith Bankhead Less than 1 k€ Department of Agriculture & Rural Development Rivers Agency 2011-01-25Z 2455586.5 Knock Burn.JPG 2010-12-02Z 2455532.5 Complete As part of a larger biodiversity project for Stormont Estate, enhancement works were required for the Knock Burn. The burn had been overwidened in past years, resulting in a shallow, slow flowing channel, which required regular maintenance due to silt accumulation. It was decided to cretae a sinuous low flow channel, using the silt and bed material to creat a narrower, faster flowing channel. No additional materials were added to the channel, and land drainage was picked up during the new channel creation. All 200m of the project was completed in one day, using a mini digger. The planform of the channel was designed on site, by working downstream and trying to follow the flow patterns as they appeared. Knock Burn low flow channel knock burn low flow channel No 200 Knock Burn knock burn Judith Bankhead Less than 1 k€ Department of Agriculture & Rural Development Rivers Agency Work carried out under the auspices of maintenance of the designated watercourse - adaptive mainteneace Environmental flows and water resources Habitat and biodiversity Social benefits Urban Less than 1 k€ GBNI1NE050503087 Lagan Judith Bankhead Less than 1 k€ Department of Agriculture & Rural Development Rivers Agency 2011-01-24Z 2455585.5 2011-01-24Z 2455585.5 2015-02-18T09:26:00Z 2457071.8930556 2017-06-06T12:12:31Z 2457911.0086921 Knock Burn low flow channel