carrownisky/killary water management unit action plan basin management... · carrownisky/killary...

Carrownisky/Killary Water Management Unit Action Plan

57Number of river water bodies

Carrownisky/KillaryWater Management Unit

12Number of lake water bodies

Mayo/GalwayMain Counties

Western RBDRiver Basin District

387 km2Area

© Ordnance Survey Ireland. All rights reserved. Licencenumber 2010/15CCMA/Galway County Council.

March 2010

Sectoral Total Phosphorus Source(T his do es no t imply impact)

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River water bodies labelled on map

Sectoral Total Phosphorus Source(This does not imply impact)

Carrownisky/Killary River Water Management Unit Action Plan

57Number of river water bodies

Carrownisky/KillaryWater Management Unit

12Number of lake water bodies

Mayo/GalwayMain Counties

Western RBDRiver Basin District

387 km2Area

© Ordnance Survey Ireland. All rights reserved. Licencenumber 2010/15CCMA/Galway County Council.

March 2010

Lake water bodies labelled on map

Sectoral Total Phosphorus Source(T his do es no t imply impact)

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Sectoral Total Phosphorus Source(This does not imply impact)


FPM catchments – 1, Bundorragha.

SAC – 5, Cross Lough (Killadoon), Lough Cahasy/Lough Baun and Roonagh Lough, Mweelrea/Sheeffry/Erriff Complex, Maumturk Mountains, The Twelve Bens/Garraun Complex.

SPA – 1, Cross Lough (Killadoon).

NHA – 1, Tawnymackan Bog.

pNHA – 13, The Twelve Bens/Garraun Complex, Maumtrasna Mountain Complex, Maumturk Mountains, Dernasliggaun Wood, Lough Cahasy, Lough Baun and Roonah Lough, Mweelrea/Sheeffry/Erriff Complex, Caher Island,

Inishturk, Ballybeg Island, Cross Lough (Killadoon), Inishdalla, Frehill Island, Inishdegil Islands.

Surface Drinking Water – 2, Killeen (Mayo), Leenaun (Galway).

Nutrient Sensitive Surface Water UWWT Directive - none

Shellfish Water – 1, Killary Harbour.

Designated Bathing Water – none

PROTECTED AREAS

STATUS/IMPACTS

Overall status For rivers the status is mostly high to good status with a few river water bodies out of the total 57 within the WMU at moderate to poor status. The Lake status overall is mostly high to good with one lake at moderate status. The WMU flows into the Erriff Estuary (moderate status), Killary Harbour coastal area (high status) and the West Atlantic seaboard (unassigned status).

Status elements For most of the 57 river water bodies within the WMU the Q score dictates status, however the Bundorragha is a freshwater pearl mussel river and the conservation status of the FPM population dictates the status which has been classified as Good. All rivers pass physio-chemical monitoring standards where this is carried out. Four (4) out of a total 12 lakes within the WMU have their status dictated by monitored results from macrophytes, chlorophyll and nutrients combined with expert opinion in some cases. Corragaun Lough is a Lagoon and no status has been assigned.

Status of the main rivers in

the WMU

The principal rivers within the Carrownisky - Killary WMU are the Carrownisky river draining through Roonagh Lough to the coast, the Bunleemshough river a tributary of Roonagh Lough, the

Owennadornaun river draining to the coast, the Bundorragha river system which drains the Glencullen river, Glenummera river, Doo Lough and Fin Lough and Owennaglogh to Killary Harbour. The main inflowing river from the east is the Oirimh (Erriff) river which drains the Owenmore, Owenduff (Owenwee), Derrycraff and Glenlaur rivers to Killary Harbour. The main inflowing rivers from the south are the Laghtyfahagaun river and the Bunowen river and the Culfin river which drains through Lough Fee and Lough Muck to the sea.

The Bundorragha river is a designated Freshwater Pearl Mussel (FPM) river under the EU Habitats Directive. The FPM population are at favourable conservation status and it is essential that no deterioration in the quality of this river occurs.

The most recent EPA status classifications for these rivers indicates that 18% of all river channel length is classed as High with 62% Good. Some 5% of river length is classed as Moderate with

15% Poor.

CULFIN This river flows westward to the Atlantic and has been classed as Good (biological monitoring) along its main length. The two main lakes in the system Loch Muc (Muck) and Loch Fidh (Fee) are also classed as Good. Above Loch Fidh the inflowing river Culfin flowing from Nambrackkeagh is also at Good status but a small tributary flowing from the south east is at Moderate status (based on extrapolated land use impact). The small Fiddaunnavear river , a tributary of the Culfin, flowing from Lough Nacarrigeen (High status) is at Good status (based on land use extrapolated impact).

BUNNOWEN – This river flows northward into An Caoláire Rua (Killary Harbour) and is classed as Good based on general physical and chemical data.

LAGHTYFAHAGAUN - This is a small river draining northwards into An Caoláire Rua west of An Líonán (Leenaun) and is classed as Good on the basis of extrapolated land use.

COILLÉACH MHÓR (Culliaghmore) - This river flows through An Líonán into the fjord and is classed as Good on the basis of extrapolated land use impact.

ABHAINN OIRIMH (Erriff) – This is a major river system flowing eastward into An Caoláire Rua at the innermost point of the fjord. The river is classed as Good (Biological monitoring data) along its main channel including the section above Erriff bridge where it is named as the Owenmore river. The upper tributaries of the Owenmore, the Fiddaunarinnia and the Sruhan Owen O’Doherty are also classed as Good status. The Glenlaur tributary is classed as High status (Biological monitoring). The inflowing northeastern tributary the Derrycraff river is classed as Moderate (biological monitoring) in its lower reaches but Good in its upper reaches. One tributary of the Derrycraff, the Cross river draining Lough Glenawough, is at Good status (extrapolated land useimpact) but another, the Owencloghagh river, is at Poor status (based on extrapolated land use impact). On the Oirimh itself the main tributary Owenduff (Owenwee river) flowing from TawnyardLough is at High status. The Glendavock river flowing into Tawnyard Lough is classed as Good status. The inflowing small tributary rivers Glenacally, Glenfree and Glenageragh are all at Good status based on the extrapolated land use impacts.

STATUS/IMPACTS

Status of the main rivers in the WMU

BUNNDORRAGHA – The Bundorragha river system is one of the most important Freshwater Pearl Mussel rivers both nationally and internationally. Its FPM population is at favourable conservation status and a specific Freshwater Pearl Mussel Sub-basin Catchment Management Plan has been prepared for its protection (www.wfdireland.ie). The water quality requirements for this river are therefore very high. The main Bundorragha river section flowing from Fin Lough (Good status) is classed as Good (the biological assessment indicates High status but the physicochemical assessment indicates a status level of Good). Above Fin Lough the short section of river below Doo Lough (Good status) known as the Owengarr is also classed as Good status (again High status in relation to biological elements but Good in relation to physico-chemical). The main Glenummera river, flowing westward into Doo Lough Is at high status as indicated by biological assessment. The Glencullin river draining Lough Cunnel and Glencullin Lough into Doo Lough is classed as Good.

OWENNADONMAUN – Flowing westward into the Atlantic north of Corragaun Lough this river is classed as Poor status based on biological monitoring data.

BUNLEEMSHOUGH – This river flows north westward draining Lough Nahaltora and the area south of this, through Roonagh Lough to the sea at Sruhir Strand. It has been classed as Poor based on extrapolation from similar land use.

CARROWNISKY – The Carrownisky river is the most northerly river system in the WMU. It flows westward to the sea through Roonagh Lough. It is classed as at High status in its upper reaches above Glenkeen bridge (biological monitoring data ) and at Good status thereafter (biological monitoring data). The short section flowing out of Roonagh Lough to the sea is classed as Poor (based on extrapolated land use impact).


Over 90% of the Total Phosphorus generated within the WMU is diffuse with agriculture accounting for over 80% of TP.

Nutrient sources

WWTP – 1, Leenane

Section 4 licensed facilities - 9, of which 3 are within Galway and 6 are within Mayo

IPPCs. - None

WTP – 2, of which 1 in is in Mayo, (Killeen) and 1 is in Galway (Leenane). In addition there are some Group Water Schemes abstractions.

Point pressures

Leenane WWTP – no risks. New plant is fully operational. Wastewater Treatment Plants (WWTP) and Industrial Discharges

PRESSURES / RISKS

There are no HMWB or AWB within the WMU.Heavily Modified Water Body (HMWB) and Artificial Water Body (AWB)

There are no water bodies determined to be at risk from abstraction within the WMU.Abstractions

Almost half the water bodies within the WMU are deemed to be at risk from overgrazing pressures.

Morphology

There are 10 water bodies that have been determined to be at risk from sheep dipping activities within the WMU: IE_WE_32_378, IE_WE_32_2851, IE_WE_32_2897, IE_WE_32_2991, IE_WE_32_2570, IE_WE_32_2756, IE_WE_32_2792, IE_WE_32_2954,

IE_WE_32_3794 and IE_WE_32_2968

Dangerous substances

There are 4 water bodies at risk from forestry within WMU: WE_32_378, WE_32_3500, WE_32_3154 and WE_32_3998.

Forestry

There are 964 OSWTS within the WMU Boundary. 629 OSWTS lie within 56 river water bodies (0 of which are at risk). The remainder of OSWTS lie between the river water bodies and the seashore.

On-site wastewater treatment systems

There are 2 water bodies at risk from agriculture within WMU: IE_WE_32_4289 and IE_WE_32_3596.

Agriculture

2 quarries within WMU - both in the Erriff area in Mayo.

No landfills or mines within WMU.

There is one old mine within the Mayo portion of the WMU - Sheffry.

Quarries, Mines & Landfills

SELECTED ACTION PROGRAMMENB All relevant basic measures and general supplementary measures/surveys apply

Point Sources Investigation of sewage and trade discharges and licence review where

appropriate will be carried out.

Diffuse Sources Particular measures are required to address diffuse pollution pressures from

agriculture including investigations and enforcement under the Good Agricultural

Practices Regulations.

Supplementary measures that apply for forestry include riparian zone

management, enhancement of sediment control and drainage management for

both eutrophication and sedimentation.

Other The Freshwater Pearl Mussel Sub Basin Management Plan for the Bundorragha

catchment and proposed measures are an important aspect of the action

programme for this WMU.

Protection of drinking waters and future abstraction licensing control are also

important basic measures required to ensure good water quality.

Further investigation of quarry risk is needed before measures can be identified.

The Shellfish Pollution Reduction Programmes for shellfish growing areas apply to

the Killary Harbour Shellfish area.

Supplementary measures that apply for morphology include over-grazing

remediation measures. In addition specific oovergrazing rehabilitation measures

have been identified to assist recovery from impact in WE_32_3596,

WE_Erriff_Derrycraff_Derrinkee1 and WE_32_535, WE_Erriff_Owencloghagh

OBJECTIVES

Good status 2015 Good status to be achieved for all water bodies unless alternative objectives are identified.

Alternative Objectives

Heavily Modified/Artificial Waterbodies – None.

Extension Morphology (Overgrazing) (2021)IE_WE_32_3596, IE_WE_32_535

Extensions for Status Recovery due to prolonged timescale for improvement to allow measures to become effective (Poor and Bad status water bodies) (2021)IE_WE_32_2851, IE_WE_32_2897, IE_WE_32_2991, IE_WE_32_2570,

IE_WE_32_2756, IE_WE_32_2792, IE_WE_32_2954, IE_WE_32_3794,

IE_WE_32_2968



Status of river water bodies within the WMU

River water body status ( % number)

57%

4%

21%18%

High Good Moderate Poor Bad

River water body status ( % Length)

62%

5%

15% 18%

High Good Moderate Poor Bad

2021GESYPWE_32_2968NWE_32_2851

2009GESYGGYWE_32_2821

2021GESPWE_32_2968NWE_32_2792

2009GESYGWE_32_1767NWE_32_2764

2009GESYGWE_32_1767NWE_32_2763

2021GESPWE_32_2968NWE_32_2756

2021GESYPWE_32_2968NWE_32_2570

2009GESYGGGHHYWE_32_1767

2009HESYHWE_32_540NWE_32_1750

2009GESGWE_32_3804NWE_32_1736

2009GESGWE_32_3804NWE_32_1735

2009GESGWE_30_3038NWE_32_1731

2009HESHWE_32_540NWE_32_1711

2009HESYHHYWE_32_1706

2009HESHWE_32_3998NWE_32_1348

2009GESGWE_32_3804NWE_32_1107

2009GESGWE_30_3038NWE_32_1054

2009GESYGNWE_32_1053

Date objectiv

e to

be

achieved

Objectiv

e

Drin

king W

ater

Nutrie

nt S

ensitiv

e

Waters

Special P

rotectio

n

Area

Special A

rea of

Conservatio

n

Chemical S

tatus

Ecological S

tatus

Physio-chemical

Specific

Pollu

tants

Morphology

Phytobenthos

(Diatoms)

Fish

FreshWater P

earl

Mussel

Macroinverte

brates

(Q)

Donor W

ater b

ody

Monito

red Y

Extra

polated N

Member State Code

Protected AreasSupporting ElementsBiological Elements


2009GESYGWE_32_3575NWE_32_513

2009GESYGWE_32_1767NWE_32_484


2009HESYHGHYWE_32_3998

2009HESYHNWE_32_3995


2009GESYGWE_32_1767NWE_32_3805

2009GESYGHGYWE_32_3804


2009GESYYGNWE_32_3799

2021GESYPWE_32_2968NWE_32_3794

2009HESYHTBCNWE_32_378

2009GESYGWE_32_3575NWE_32_3774

2021GESYMMYWE_32_3596


2009GESYGWE_32_3575NWE_32_3524

2015GESYMWE_32_637NWE_32_3500

2009GESYGWE_32_3803NWE_32_3384

2009GESYGWE_32_1767NWE_32_3317


2009HESYHNWE_32_3303

2009GESGNWE_32_3154

2009HESYHWE_32_3998NWE_32_3057

2021GESYPWE_32_2968NWE_32_2991

2009HESYHWE_32_2974NWE_32_2975


2021GESYPPYWE_32_2968

2021GESYPWE_32_2968NWE_32_2954


2009GESYGWE_32_1767NWE_32_2927

2021GESPWE_32_2968NWE_32_2897

Date objectiv

e to

be achieved

Objectiv

e

Drin

king W

ater

Nutrie

nt S

ensitiv

e W

aters

Special P

rotectio

n Area

Special A

rea of C

onservatio

n

Chemical S

tatus

Ecological S

tatus

Physio-chemical

Specific

Pollu

tants

Morphology

Phytobenthos (D

iatoms)

Fish

FreshWater P

earl M

ussel

Macroinverte

brates (Q

)

Donor W

ater b

ody

Monito

red Y (E

xtra

polated N)

Member State Code



2009GESYGWE_32_1767NWE_32_915

2009GESGWE_32_3575NWE_32_869


2009GESYGNWE_32_546


2021GESYPWE_30_1516NWE_32_535

2009GESYGWE_32_3575NWE_32_517

2009GESYGWE_32_3575NWE_32_516

Date objectiv

e to

be achieved

Objectiv

e

Drin

king W

ater

Nutrie

nt S

ensitiv

e W

aters

Special P

rotectio

n Area

Special A

rea of C

onservatio

n

Chemical S

tatus

Ecological S

tatus

Physio-chemical

Specific

Pollu

tants

Morphology

Phytobenthos (D

iatoms)

Fish

FreshWater P

earl M

ussel

Macroinverte

brates (Q

)

Donor W

ater b

ody

Monito

red Y (E

xtra

polated N)

Member State Code


Carrownisky/Killary Water Management Unit Action Plan - Lakes

Status of lake water bodies within WMU

Lake water body status (No. %)

High42%

Good50%

Moderate8%

Lake water body status (Area %)

High23%

Good76%

Moderate1%

2009GESYGMGYFee ( Lough )WE_32_498

2009GESYGHHMHHYDoo LoughWE_32_490

2009HESYHHHHHYGlencullin LoughWE_32_487

2009GESYGNMuck ( Lough )WE_32_482

2009HESYHNNahaltora ( Lough )WE_32_472

2009HESYHNNacarrigeen ( Lough )WE_32_458

2009GESYGNTawnyard LoughWE_32_441

2009GESYGNLugacolliee LakeWE_32_428

2009HESYHNGlenawough ( Lough )WE_32_392

2009GESYGGGGYFin LoughWE_32_391

2009HESYHNCunnel ( Lough )WE_32_358

2015GESYMNDerrintin LoughWE_32_349

Date objectiv

e to

be achieved

Objectiv

e

Drin

king W

ater

Bathing W

ater

Nutrie

nt S

ensitiv

e

Waters

Special P

rotectio

n

Area

Special A

rea of

Conservatio

n

Chemical S

tatus

Ecological S

tatus

Physico Chemical

Nutrie

nt

Enric

hment

Morphology

Fish

Chlorophyll

Macrophytes

Monito

red Y

(Extra

polated N)

NameMember State Code


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