dromore river catchmentwatersandcommunities.ie/wp-content/uploads/2019/01/6a...2019/01/06 · 3....
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Upper Dromore River Catchment NFGWS - Source Protection Pilot Project
Phase II – Surface Waters
17th January 2019
Tullamore Court Hotel
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Background• Stranooden GWS one of the largest in Ireland.
1,100 domestic connections; and
400 agricultural & commercial connections.
• Abstracts water from White Lough, Ballybay, Co. Monaghan.
• Phase I – Preliminary Source Protection report completed in 2012.
• Catchment delineated at 125km2.
• Pressures perceived from both urban and rural sources.
• MCPA issues identified in 2017.
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White Lough Catchment
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Objectives• Increasing local awareness of the delineated White Lough catchment and current health of the
Upper Dromore system
• Create an understanding of the pressures impacting on the catchment
• Highlighting behavioural changes & measures that could improve the water quality
• Building an appreciation of the social, economic & environmental benefits
• Develop detailed source protection plan with local participation
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Key Phases of Road Map
1. Build partnerships
2. Characterise the catchment (i.e. build upon Phase I Assessment)
3. Further catchment characterisation
4. Identify possible mitigation strategies
5. Production of an Integrated Catchment Management Plan
6. Ongoing implementation, monitoring, feedback & effectiveness
} In Conjunction
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Upper Dromore River / White Lough Sub-Catchments
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2. Catchment Characterisation
WATERBODY
European Union Drinking Water Regulations 2014
Parametric Value S.I. No. 122 of 2014 04.05.18 11.05.18 29.05.18 08.06.18 12.06.18 14.06.18 18.06.18 21.06.18
MCPA (µg/l)
Bannaghbane Stream 0.1 <0.1 0.5 - - - <0.1 2.9 <0.1Dromore River 0.1 <0.1 0.3 <0.1 <0.1 4.6 <0.1 <0.1 <0.1White Lough 0.1 <0.1 0.2 <0.1 1.2 0.5 <0.1 0.4 <0.1
Dromore River 0.1 <0.1 0.2 <0.1 1.4 0.7 <0.1 2.7 <0.1Dromore River 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1Lough Major 0.1 <0.1 0.1 <0.1 0.2 0.1 <0.1 <0.1 <0.1
Lough Major Stream 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1Dromore River 0.1 - - - <0.1 4.5 <0.1 <0.1 <0.1
Rainfall (mm) 0 10.6* 0 43.2 1 1.8 0 0Wind Speed (meters/sec) Max Speed 7.6 10.8* 6.2 6.8 6.1 17.2 8.5 9.6
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Comparison of Phosphate Susceptibility Areas Between Sub-Catchments
Derryvalley Sub-Catchment – Higher % of‘Class 2’ soils
Lough Major Sub-Catchment – Higher % of‘Class 4’ soils
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2. Catchment Characterisation
SELECTION CRITERIA DERRYVALLEY SUB-CATCHMENT
LOUGH MAJOR SUB-CATCHMENT
Ecological Water Quality Status 2013: Q3-4 ‘Moderate Status’2017: Q3-4 ‘Moderate Status’
2013: Q4 ‘Good Status’2017: Q3-4 ‘Moderate Status’
Nutrient Conditions 2015: Phosphate ‘Poor Status’2017: Phosphate ‘Poor Status’ -
Results of MCPA Monitoring Highest MCPA concentration of 4.6ug/l
Highest MCPA concentration of 0.1ug/l
Nutrient Susceptibility Maps Higher percentage of ‘Near Surface Phosphate Susceptibility’
Lower percentage of ‘Near Surface Phosphate Susceptibility’
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Upper Dromore River / White Lough Sub-Catchments
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3. Further Catchment Characterisation• 45km of surface water courses in Derryvalley Sub-Catchment
• Approx. 75% of landowners adjacent to water channel identified (circa 79 farmers)
• Good correlation with Monaghan County Council ‘Derryvalley Project’ records
• Have been contacted by letter and follow up phone call and / or face to face conversation
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Importance of ‘Ground Proofing Maps’
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Example of Catchment Walk Mapping
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4. Further Catchment Characterisation Consequence of erosion / poaching / bare soils during heavy rainfall !!!
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4. Identify Possible Mitigation Strategies • Proposed to trial Weed Wiping Programme in Derryvalley Sub-Catchment in
2019;
• Similar Approach to NI Seagahan Weed Wiping Trial Project (using Glyphosate);
• Demonstrated MCPA residual reduction of more than 50%;
• Rush mapping used to identify landowners willing to participate in pilot;
• Project launch also used to allow landowners to sign up to the scheme.
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4. Identify Possible Mitigation Strategies
Prime candidate for fencing(note elevations)
Prime candidate for Aquamatnose pump drinking system
Prime candidate for simple costfree solution with farmers co-operation
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4. Identify Possible Mitigation Strategies Upstream monitoring point from Ballybay UWWTP – ‘Poor Status’ as a consequence of Phosphate
Downstream monitoring point from Ballybay UWWTP – ‘Bad Status’ as a consequence of Phosphate
2018 Low Flow: Upstream – 0.11 P mg/lDownstream – 0.24 P mg/l
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4. Identify Possible Mitigation Strategies
• Plan to expand the NFGWS ‘On-Site Waste Water Pilot Project’ in 2019;
• Bundled septic tank De-Sludging approach;
• Hoped price reduction will encourage participation.
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4. Identify Possible Mitigation Strategies Communication as a Mitigation Strategy!!!
• Northern Sound – Agriview 8th November 2018;
• Cavan Monaghan Science Festival: Corduff Agricultural Catchments Programme; Exploring Citizen Science on the Dromore River Corridor.
• WISDOM Project; and
• Green Flags Programme – Corcaghan Primary School
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5. ICM Plan & Implementation • Integrated Catchment Management Plan to be issued at the beginning of
March 2019;
• Contents to include: Completed initial catchment characterisation (desktop study); Further characterisation of Derryvalley Sub-Catchment (seasonal assessment); Mitigation proposals & schedule of works for 2019; and Communication strategy for 2019.
• Monthly circulars – sampling results / mitigation installation etc.