Rivers Findhorn, Nairn and Lossie Habitat Review and Improvement Plan
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Rivers Findhorn, Nairn and Lossie Habitat Review and Improvement Plan By M. Walters 1 and R. Laughton 2 1 = Moray Firth Sea Trout Project, Logie Steading, Dunphail, Morayshire IV36 2ON 2 = Spey Foundation, 1 Nether Borlum Cottage, Knockando, Morayshire, AB38 7SD Spey Foundation Report 04/11 Prepared for Findhorn, Nairn and Lossie Fisheries Trust Logie Steading, Dumphail Morayshire, IV36 2QN. March 2011 This survey was funded by Rivers Findhorn, Nairn and Lossie Habitat Review and Improvement Plan M. Walters 1 and R. Laughton 2 1 = Moray Firth Sea Trout Project, Logie Steading, Dunphail, Morayshire IV36 2ON 2 = Spey Foundation, 1 Nether Borlum Cottage, Knockando, Morayshire, AB38 7SD Spey Foundation Report 04/11 Background The following report was prepared to summarize issues and problem areas regarding fish habitat and fish access within the Rivers Findhorn, Nairn and Lossie. Initially a walk over survey was proposed to identify problems with habitat however it was clear after some enquiries that a wealth of habitat data had already been collected and reported Adderton 1998; Mackay 2000, Walker 2010a Walker 2010b). This information combined with additional spot surveys was used to compile the following report. The report is intended to be a working document and will be added to and revised in the future. Meantime it will allow targets for remedial action to be identified. These can then be costed and bids to relevant funders prepared. The project was completed using funds from RAFTS and Scottish Government. 1. River Findhorn habitat review and improvement plan Upper Findhorn tributaries Issue 1: Lank of bank side cover and vegetation along upper catchment tributaries Action : Raise awareness among relevant landowners of the benefits of native deciduous trees in the riparian zone of tributaries. Encourage the adoption of environmental land management reviews perhaps looking to other local estates for ideas and potential models. Raise awareness of potential funding through SRDP. Allt na Frithe Burn Issue 2: Fish access up the Allt na Frithe Fish access up the Allt na Frithe is limited by many mad made weirs but 2 in particular could limit upstream fish migration. Also the tunnel where the Allt na Frithe crosses under the A9 is entirely concrete and passage of fish may be limited by lack of depth. There are also degraded gabion baskets that could cause potential problems. Action: Assess barriers and determine appropriate remedial action if necessary Issue 3: Cooling water discharge from Tomatin Distillery The cooling water from Tomatin distillery is significantly warmer than the ambient temperature and could be having a detrimental impact on fish populations. Action: Discussion with Tomatin Distillery and SEPA to determine what remedial action necessary. Mazeran Burn Issue 4: Bank erosion of Mazeran burn by livestock The Mazeran burn is extensively eroded in places by grazing livestock which has resulted in bank degradation. Action: Assessment of current situation and if necessary awareness raising and negotiation with local landowners to identify remedial action eg fencing and planting. Kyllachy Burn Issue5: Bank erosion of Kyllachy burn by livestock The Kyllachy burn is extensively eroded in unfenced areas of conifer plantation places by grazing livestock which has resulted in bank degradation. Action: Assessment of current situation and if necessary awareness raising and negotiation with local landowners to identify remedial action eg fencing and planting. Funtack Burn Issue 6: Dredging of Funtack Burn Dredging of Funtack Burn to maintain bankside revetments could be having severe detrimental impact on fish populations. Action: Assessment of current situation and if necessary make local landowners aware that not only is detrimental to the fish in the river but it is also illegal to dredge or carry out any other modification in the river or tributaries without a Controlled Activities Licence (CAR) from SEPA or remaining within General Binding Rules (GBR). For more information go to http://www.sepa.org.uk/water/water_regulation.aspx . Issue7: Funtrack Burn straightened featureless channel Long straightened sections of channel with limited instream habitat and banks side cover Action: Potential for habitat improvement through fencing and instream restoration techniques. Moy Burn Issue8: Erosion of Moy Burn banks Erosion of Moy Burn banks potentially by sheep grazing Action: Assessment of current situation and if necessary awareness raising and negotiation with local landowners to identify remedial action eg fencing and planting. Issue 9: Moy Burn straightened featureless channel Long straightened sections of channel with limited instream habitat and banks side cover Action: Assess otential for habitat improvement through fencing and instream restoration techniques. Little Berry Burn Issue 10: Windfarm development on Berry Burn Wind farm development in catchment?? Dallas Broughty Action: Monitor development of wind farm and take part in EIA process. Issue11: Weir at Dallas Broughty on Little Berry Burn Weir in Dallas Broughty potentially limiting fish access Action: Assessment of weir and remedial action to ensure fish access if necessary. Bogeney Burn Issue12: Conifer plantation on Bogeney burn The local estate (Dunphail Estate) is undergoing an extensive review of landuse and carrying out various environmental improvement schemes. As part of their forestry review which is being conducted by Steve Connolly from Cawdor Estates there is potential to have the forestry along the Bogeney Burn improved through the provision of adequate buffer strips and planting of native trees in the riparian zone. Action: Begin dialogue with estate factor, David Smart, and other relevant parties to include appropriate actions in management plan towards benefit of fish populations in the Bgeney Burn. Possible targets include the felling of a Sitka Spruce plantation, protection of riparian zone and if possible planting of broad leaf native species. Issue Action Urgency Likely Cost Effort required Priority Lank of bank side cover and Awareness raising with local 4 1 2 7 vegetation along upper landowners to encourage land use catchment tributaries management reviews. Fish access up the Allt na Frithe Assesment of bridge apron 4 5 4 13 Cooling water discharge from Assessment of potential impacts 4 2 4 10 Tomatin Distillery and negotiate solution Bank erosion of Mazeran burn Assesment of situation and 3 3 2 8 by livestock negotiating remedial action Bank erosion of Kyllachy burn by Assesment of situation and 3 3 2 8 livestock negotiating remedial action Dredging of Funtack Burn Raise awareness of issue with 2 2 3 7 relevant landowner Erosion of Moy Burn banks Assesment of situation and 3 3 2 8 negotiating remedial action Moy Burn straightened Assess potential for habitat 3 4 4 11 featureless channel restoration project Windfarm development on Liase with developers and ensure 2 2 2 6 Berry Burn EIA applied Weir at Dallas Broughty on Little Conduct assessment and determine 2 3 4 9 Berry Burn remedial action Conifer plantation on Bogeney Liase with local landowner to 2 2 2 6 burn include appropriate action in Estate land use management plan Urgency: 1= Very Urgent , 2= Urgent, 3= Soon, 4= Not urgent, 5= consider if necessary Cost: 1= Free , 2= Low cost , 3= Moderate Cost , 4= High Cost , 5 = Very high cost Effort: 1= No effort, 2= Low effort, 3= Moderate effort, 4= High effort, 5= Very high effort Priority: = sum of other four categories to give some idea of deliverability. 2. River Nairn habitat review and improvement plan. Summary of Habitat Report by Mackay (2000) Entire Catchement Issue 1: Invasive Non Native Species through catchment Significant areas of the River Nairn catchment are severely impacted by large areas of Invasive Non Native Species (INNS) including Giant Hogweed, Himalayan Balsam, Japanese Knotweed, American Signal Crayfish. These species severely limit biodiversity and are very destructive to the catchment and fish populations. Action: The INNS should be targeted through a catchment wide coordinated approach to management and eradication. This will likely require a specific project and funding over 3+ years to produce a successful result. Upper Nairn (E263400 N823600 to E268500 N835100 Upstream of Aberarder Falls considered inaccessible due to impassable falls (E263400, N823700). This section suffers from siltation problems limiting salmonid habitat and productivity. The sediment is likely from a combination of specific erosion sites and bank side erosion as result of grazing. The section is generally degraded with dilapidated fencing heavy grazing and bank side trampling combined with localised poor forestry. Issue 2: - Erosion downstream of Aberarder Falls Heavy erosion just down stream of Aberarder Falls (E263400, N823700) is a potential source of fine material into the river which could result in silting up of spawning gravel and destabilising the river bed downstream. Action: conduct detailed assessment of erosion and landslip to determine necessary remedial action. There is a potential need for bank reinforcement, fencing and tree planting. Issue3: Dredging and straightening of upper catchment Near where the Flichity Burn joins the River Nairn a local farmer has carried dredging of the bed pulling potential spawning gravel onto the banks. Action: Local farmers and landowners should be made aware that not only is detrimental to the fish in the river but it is also illegal to dredge or carry out any other modification in the river or tributaries without a Controlled Activities Licence (CAR) from SEPA or remaining within General Binding Rules (GBR). For more information go to http://www.sepa.org.uk/water/water_regulation.aspx . Issue 4: - Man made revetments and poor fencing by landowners downstream of Aberarder Falls The upper section of the River Nairn in the region of Aberarder and Strathnairn generally has good fry and spawning habitat but a lack of larger stones and boulders likely limits habitat for larger fish. The river meanders between man made revetments constructed from river bed material and there are signs of livestock grazing the banks where fences have broken down resulting in limited bankside vegetation and cover.