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Corrib Water Management Unit Action Plan
78Number of river water bodies
Corrib
Water Management Unit
20Number of lake water bodies
Galway/MayoMain Counties
Western RBDRiver Basin District
1,146 km2Area
© Ordnance Survey Ireland. All rights reserved. Licencenumber 2010/15CCMA/Galway County Council.
March 2010
River water bodies labelled on map
Sectoral Total Phosphorus Source(T his do es no t imply impact)
0
10
20
30
40
50
60
70
80
90
100
AG
RIC
ULT
UR
E
AQ
UA
CU
LT
UR
E
BA
CK
GR
OU
ND
FO
RE
ST
RY
UN
SE
WE
_IN
D
UN
SE
WE
RE
D
UR
BA
N
WW
TP
PE
AT
LA
ND
%
Sectoral Total Phosphorus Source(This does not imply impact)
Corrib Water Management Unit Action Plan
78Number of river water bodies
Corrib
Water Management Unit
20Number of lake water bodies
GalwayMain Counties
Western RBDRiver Basin District
1,146 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)
0
10
20
30
40
50
60
70
80
90
100
AG
RIC
ULT
UR
E
AQ
UA
CU
LT
UR
E
BA
CK
GR
OU
ND
FO
RE
ST
RY
UN
SE
WE
_IN
D
UN
SE
WE
RE
D
UR
BA
N
WW
TP
PE
AT
LA
ND
%
Sectoral Total Phosphorus Source(This does not imply impact)
Corrib Water Management Unit Action Plan
STATUS/IMPACTS
Overall status Approximately 66% of rivers within the WMU are at high or good status with the remaining 34% at moderate or poor status. There are 20 lakes within the WMU with 60 % at High or good status and 40% at moderate status. Lough Corrib Upper and Lower is classified at moderate status.
Status elements Q score (macroinvertebrates) and fish status dictates majority of river waterbody status within the WMU. There is no chemical monitoring data available. There are 9 lakes out of the 20 within the WMU that are monitored, for those lakes classified as moderate, introduced fish species predominantly drive the status classification. Macrophytes, nutrients, chlorophyll status and expert opinion also drive the status classification mainly for the good or high status classification.
Status of the main rivers within the Corrib WMU
The Corrib WMU includes Lough Corrib and the following prIncipal rivers: Bealnabrack, Failmore, Joyce’s rivers flowing into the northwestern part of the lake, the Cornamona river (Dooghta) also flowing in from the north west, the Folore, Owenree and Owenwee rivers draining Loughanillan and Tawnabeg Lough into the Corrib, the Owenriff (including the Bunowen) draining Loughs Bofin, Agraffard and Lettercrafroethrough Oughterard, Ballycuirke river and lake draining into lower Lough Corrib, the Corrib river draining Lough Corrib into the Corrib Estuary in Galway Bay and the the Cregg and Black (Shrule) rivers flowing in from the east.
The most recent EPA status classifications for these rivers indicates that only 8% of all river channel length is of High status and 54% is classed as Good. The remainder are classed as Moderate (19%) or Poor (19%).
BEALNABRACK: The Bealnabrack river main channel is classed as Poor status (based on biological monitoring). In its upper reaches, which drain the Maumturk Mountains, the main channel is generally Good as is its upper tributary the Glenglosh river although one small section of this is at Poor status. The Failmore river , which is a tributary of the Bealnabrack joining it shortly before Lough Corrib has been classed as
Moderate in its lower reaches but High and Good in it supper reaches. Joyce’s river has also largely been classed as Good.
CORNAMONA (DOOGHTA): This river flows into Lough Corrib through Cornamona, the river is at Good status along its length and at High status in its upper reaches.
OWENRIFF (CORRIB): The Owenriff river catchment includes a significant portion of the Connemara Bog Complex SAC/NHA in its upper catchment and the Lough Corrib SAC in the lower main river channel. The Lough Corrib cSAC in the Owenriff river has been designated for the Freshwater Pearl Mussel species protected under Annex II of the EU Habitats Directive. This species is particularly sensitive to silt, turbidity and nutrient enrichment. Filamentous algae are also causing ongoing problems particularly in the Oughterard stretch of the river. The river has seen a decline in the FPM population since 2004 and a specific Sub-basin Freshwater Pearl Mussel Plan for this river catchment has been prepared to protect the FPM species. The most recent EPA biological assessment of the river indicates the following:
The Derrygauna river which flows into Loughaphreagaun in the upper catchment is classed at Moderate status due to the unfavourable conservation status of the FPM population located there. The Glashanasmearany river flowing between Loughaphreagaun and Lough Bofin has been classed as High status. The main Owenriff channel between Lough Bofin and Lough Adrehid, between Adrehid and Agraffard and down to Oughterard has been classed as Moderate again due to the unfavourable conservation status of the FPM. Biological sampling of other indicative species indicates that the Owenriff is generally good with good fish stock but the overriding factor in determining its status is the conservation status of the FPM. The upper reaches of the Glengawbeg, draining Lettercraffroe Lough is classed as High status as are the smaller tributaries flowing from Shannaghree Lough and through Rusheeny townland. The Bunowen, another tributary of the Owenriff was classed as Moderate.
BALLYCUIRKE : The Ballycuirke river drains out of Ballycuirke Lough into the Lower Corrib. The Lough Kip river flowing into Ballycuirke Lough is classed as Good (based on the recent EPA biological monitoring). However, the Ballycuirke Lough stream which flows from Ross lake through a series of small lakes to Ballycuirke Lough is also classed as Poor (based on extrapolated land use impact). The Knockbane river which flows into Ross Lake is classed as Good and the small river which flows into Ross Lake from Knockafrin Lough is classed as Moderate. The Ballycuirke river flows into the Old Corrib River channel and joins the main Corrib river at the Friars Cut. This section of the river is classed as Poor (on the basis of biological assessment).
CORRIB River: The main channel of the Corrib river from Lough Corrib to the Corrib Estuary is classed as at Good status (biological assessment). The Terryland river which flows out of the Corrib river at Jordans Island and flows underground at Castlegar is classed as Poor status. This river is believed to emerge at Lough Atalia and at Oranmore.
BLACK (SHRULE): The Black (Shrule) River is classed as Good over most of its length with two small sections classed as Moderate (At Carrowmore townland and flowing into and out of Lough Lee s small lake)
HEADFORD River: This river flowing through Headford is classed as Moderate based on recent biological monitoring.
CREGG River: This river, which flows into Lower Lough Corrib, is classed as Good status in general with one small tributary (Waterdale river) classed as Moderate.
FPM – 1: Catchment – Owenriff
SACs -12: Galway Bay Complex, Lough Corrib, Ballymaglancy Cave, Cloughmoyne, Clyard kettle-Holes, Shrule Turlough, Gortnandarragh Limestone Pavement, Ross Lake and Woods, Mochorha Lough,
Maumturk Mountains, Connemara Bog Complex, Kildun Souterrain.
SPAs -2: Inner Galway Bay SPA and Lough Corrib SPA.
HAs - 2 Oughterard District Bog NHA, Moycullen Bogs NHA
pNHAs -27: Maumtrasna Mountain Complex, Maumturk Mountains, Altore Lake, Rathbaun Turlough, Ballymaglancy Cave - Cong, Lough Corrib, Killower Turlough, Turlough O'Gall, Belclare Turlough, Connemara Bog Complex, Lough
Hacket, Knockmaa Hill, Rostaff Turlough, Castle Hackett Souterrain, Turlough Monaghan, Turloughcor, Oughterard National School, Gortnandarragh Limestone Pavement, Ross Lake And Woods, Drimcong Wood, Ballycuirke Lough, Killarainy Lodge, Moycullen, Galway Bay Complex, Clyard Kettle-Holes, Mocorha Lough, Shrule Turlough, Cloughmoyne.
Nutrient Sensitive Surface Water (UWWT Directive) - none
Drinking waters -2 Upper and Lower Lough Corrib.
Bathing Waters - None.
Shellfish Waters - None.
PROTECTED AREAS
Corrib Water Management Unit Action Plan
There are 11,021 OSWTS within the WMU Boundary, 10,867 OSWTS lie within 78 river water bodies. Within the river water bodies 3,671 OSWTS constitute a potential risk to waters because of where they are sited and constitute a risk to 11 water bodies. The remainder of OSWTS lie in the coastal area between the river water bodies and the seashore and may pose a risk to estuarine and coastal water quality and protected areas. At risk RWB’sWE_30_609, WE_30_1952, WE_30_2290, WE_30_1481, WE_30_1964, WE_30_2681, WE_30_2025, WE_30_3484, WE_30_1966, WE_30_3542, WE_30_1534.
On-site systems
There are 8 water bodies determined to be at risk from forestry within WMU : IE_WE_30_1096 ,IE_WE_30_2037, IE_WE_30_2035, IE_WE_30_2684, IE_WE_30_3396 ,IE_WE_30_296, IE_WE_30_1531, IE_WE_30_2013
Forestry
There are 2 water bodies that may be at risk from sheep dipping activities within WMU: IE_WE_30_3219, IE_WE_30_1231Dangerous substances
19 water bodies have been determined to be at risk from Morphology within WMU: IE_WE_30_609, IE_WE_30_975, IE_WE_30_3419, IE_WE_30_1952, IE_WE_30_1481, IE_WE_30_1964, IE_WE_30_256, IE_WE_30_2681, IE_WE_30_1903, IE_WE_30_2025, IE_WE_30_3484, IE_WE_30_2617, IE_WE_30_2928, IE_WE_30_1151, IE_WE_30_1966, IE_WE_30_3219, IE_WE_30_3296, IE_WE_30_1231, IE_WE_30_3520
Morphology
There are 6 water bodies (all part of the Corrib) that have been determined to be at risk from abstraction within the WMU; IE_WE_30_609, (County Galway), IE_WE_30_3419, IE_WE_30_3484, (County Galway) IE_WE_30_975, IE_WE_30_2013, (County Galway) IE_WE_30_2681 (County Galway)
Abstractions
8 water bodies have been determined to be at risk from agriculture within WMU : IE_WE_30_609, IE_WE_30_975, IE_WE_30_1481, IE_WE_30_1964, IE_WE_30_3484, IE_WE_30_3219, IE_WE_30_3296, IE_WE_30_1231.
Agriculture
Quarries - 8: 5 quarries in Galway and 3 in Mayo. 3 water bodies at risk from quarries: IE_WE_30_975, IE_WE_30_3419, IE_WE_30_2290.
Landfills – none
Mines -none
Quarries, Mines & Landfills
Headford WWTP - New plant in place since 2007.
Moycullen WWTP - ensure capacity of treatment plant is not exceeded.
Oughterard WWTP - risks to water quality relate to insufficient WWTP capacity. A new treatment plant, capacity 4,750 p.e., to be completed by 2012. Plant requires capital works
Cong WWTP - Plant requires implementation of performance management system.
Shrule WWTP - Plant requires implementation of performance management system.
Kilmaine WWTP – ensure capacity of treatment plant is not exceeded.
Section 4s- No risks
No perceived risks from Mayo WWTP’s within WMU.
Wastewater Treatment Plants (WWTP) and Industrial Discharges
PRESSURES/RISKS
Nutrient sources Over 90% of Total Phosphorus is diffuse in nature with agriculture accounting for over 80% of TP.
Point pressures WWTP – 8: Headford WWTP, Moycullen WWTP, Oughterard WWTP, Cong WWTP, Shrule WWTP. Kilmaine WWTP, Cross WWTP and Mutton Island – Galway City. The NealeWWTP will be constructed in 2010 (funding dependant from DEHLG).
Section 4 Licensed Facilities - 11 all within the Galway portion of the WMU)
IPPC Licensed Facilities -4: Jennings Wholesale, Glanbia Farms Ltd, Newbrook Ltd, Earrai Coillte Chonnacht Teoranta.
WTP – 4: Cornamona WTP, Luimnagh WTP (Tuam RWSS), Oughterard WTP, Cong WTP. There are some Group Water Schemes abstractions within the Mayo portion of the WMU
Other No HMWB.
1 AWB within WMU - Eglinton Canal IE_WE_AWB_EGC which flows through the waterbody
IE_WE_30_3419.
Corrib Water Management Unit Action Plan
SELECTED ACTION PROGRAMMENB All relevant basic measures and general supplementary measures/surveys apply
Point Sources The UWWTD Regulations will apply to the WWTP within the WMU and the Water Pollution Acts and IPPC Directive will apply to the industrial discharges.
Oughterard WWTP has been identified as a priority for Water Framework Directive purposes. Oughterard WWTP has insufficient WWTP capacity and has insufficient assimilative capacity in the receiving water.
Investigation of sewage and trade discharges and licence review where appropriate will also be carried out. The following Point source supplementary measures have been suggested for certain river water bodies within the WMU for municipal and industrial pressures: Development control, investigate wastewater, verification of risk, decision making tools, and relocation of outfall.
Diffuse Sources Particular measures will be required to address diffuse pollution pressures from agriculture such as the Good Agricultural Practices Regulations investigations and enforcement. Supplementary measures apply within WMU for septic tanks (OSWWTS) including compliance with the new binding EPA Code of Practice for Wastewater Treatment Systems and Disposal Systems.
In relation to existing unsewered properties, improvements are required regarding the operational performance, maintenance and monitoring arrangements of septic tanks and other on-site waste water treatment systems serving such properties. In response, the Minister for Environment, Heritage and Local Government intends to bring forward and consult on proposals for legislation during 2010. It is intended that this legislation will be in place by quarter 3 of 2010. The proposed legislation will provide standards for the performance, operation and maintenance of septic tanks and similar on-site wastewater treatment systems. It will also provide for the monitoring and inspection of the performance of such treatment systems and will set out the responsibilities of households served by those systems, including requirements to carry out remedial actions where necessary.
Forestry supplementary measures include the following supplementary measures for both eutrophication and sedimentation pressures: riparian zone management, enhanced sediment control and drainage management.
Other The Freshwater Pearl Mussel Sub Basin Management Plan and proposed measures will key to the selected action programme for the Owenriff.
Overgrazing rehabilitation measures to assist recovery from impact due to channelisation
on WE_30_3107, WE_Corrib_Bealnabrack_Breenaun, and WE_30_2094,
WE_Corrib_Joyce's_Derreen(RossBy)
OBJECTIVES
Good status 2015
Alternative Objectives
Heavily Modified/Artificial water bodies - 1 AWB within WMU - Eglinton Canal
Extensions Agriculture (Phosphorous Karst Groundwater) (2021)
IE_WE_30_609, IE_WE_30_975, IE_WE_30_1481, IE_WE_30_1964, IE_WE_30_3484,
IE_WE_30_3296, IE_WE_30_3542, IE_WE_30_2290, IE_WE_30_2013,
IE_WE_30_3219, IE_WE_30_3247, IE_WE_30_1231, IE_WE_30_1534,
IE_WE_30_1904
Extension Morphology (Overgrazing) (2021)
IE_WE_30_3107, IE_WE_30_2094
Extensions for Forestry (2027)
IE_WE_30_2013
Extensions required for wastewater infrastructure to be put in place (2021)
IE_WE_30_3396
Extensions for Status Recovery due to prolonged timescale for improvement due to measures to manifest (Poor and Bad status water bodies) (2021)
IE_WE_30_2862
Corrib Water Management Unit Action Plan - Rivers
Status of river water bodies within the WMU
River water body status ( % number)
45%
21%
13%21%
High Good Moderate Poor Bad
River water body status ( % Length)
54%
19%
19%8%
High Good Moderate Poor Bad
2009HESYHHYWE_30_1464
2009GESYGGYWE_30_1463
2009GESYGWE_32_1767NWE_30_1380
2009HESHWE_31_1323NWE_30_137
2009HESYHWE_30_1464NWE_30_1364
2009GESGWE_30_3038NWE_30_1306
2009HESHWE_30_1351NWE_30_1299
2009HESHWE_30_1351NWE_30_1287
2009HESHWE_30_1351NWE_30_1286
2021GESYYPWE_30_1933NWE_30_1231
2009GESYYGHGYWE_30_1151
2009GESGGYWE_30_1096
2009HESHWE_30_1351NWE_30_1072
2009GESGWE_30_993NWE_30_1054
2009GESGWE_30_3093NWE_30_1024
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
Polutants
Morphology
Phytobenthos (D
iatoms)
Fish
FreshWater P
earl M
ussel
Macroinverte
brates (Q
)
Donor W
aterbody
Monito
red Y (E
xtra
polated N)
Member State Code
Protected AreasSupporting ElementsBiological Elements
IE_WE_Corrib
Corrib Water Management Unit Action Plan - Rivers
2009GESGWE_30_3038NWE_30_2709
2015GESYMHMHYWE_30_2703
2009HESHTBCNWE_30_2684
2009GESYYGHGYWE_30_2681
2009GESGGYWE_30_262
2009GESGWE_30_2928NWE_30_2617
2009GESYGWE_30_201NWE_30_2601
2009GESYGWE_30_3038NWE_30_2598
2009GESYYGHGYWE_30_256
2021GESYPWE_30_1534NWE_30_2290
2009HESHWE_31_1323NWE_30_2283
2009GESYGWE_31_163NWE_30_2197
2021GESYPPYWE_30_2094
2009HESYHWE_30_1464NWE_30_2092
2009HESYHTBCNWE_30_2037
2009HESYHTBCNWE_30_2035
2009GESGGYWE_30_2025
2009GESYGGYWE_30_202
2027GESPPYWE_30_2013
2009GESGWE_30_2025NWE_30_2012
2009GESYGGYWE_30_201
2009GESGGGYWE_30_1966
2021GESMWE_30_2353NWE_30_1964
2009GESYYGWE_30_1096NWE_30_196
2009GESYGWE_30_1966NWE_30_1952
2021GESYYPPYWE_30_1904
2009GESGWE_30_2928NWE_30_1903
2015GESYMMYWE_30_1900
2009HESYHTBCNWE_30_1787
2021GESYPHPYWE_30_1534
2015GESYMMYWE_30_1531
2021GESYMWE_30_1531NWE_30_1481
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
Polutants
Morphology
Phytobenthos (D
iatoms)
Fish
FreshWater P
earl M
ussel
Macroinverte
brates (Q
)
Donor W
aterbody
Monito
red Y (E
xtra
polated N)
Member State Code
Protected AreasSupporting ElementsBiological Elements
IE_WE_Corrib
Corrib Water Management Unit Action Plan –Rivers (cont)
2009GESYYGHGHYWE_30_993
2021GESYMWE_30_3484NWE_30_975
2021GESMWE_30_2353NWE_30_609
2009GESYGWE_30_993NWE_30_3594
2021GESYMWE_30_3396NWE_30_3542
2009GESGWE_30_2928NWE_30_3520
2021GESMMYWE_30_3484
2015GESYYMWE_30_2684NWE_30_3479
2009GESYYGGGYWE_30_3419
2015GESYMWE_32_637NWE_30_3403
2021GESYYMHMGYWE_30_3396
2009HESYHWE_30_1464NWE_30_3351
2021GESMWE_30_2353NWE_30_3296
2015GESYMWE_30_1531NWE_30_3278
2009GESYGWE_30_3038NWE_30_326
2021GESPWE_30_1534NWE_30_3247
2021GESYYPWE_30_1933NWE_30_3219
2009GESYGWE_30_3038NWE_30_3173
2009GESYYGWE_30_2681NWE_30_3143
2021GESYYYPHPYWE_30_3107
2009GESYGGYWE_30_3093
2015GESYMWE_30_2703NWE_30_3016
2009HESYHTBCNWE_30_296
2009GESGGGYWE_30_2928
2021GESYPWE_32_678NWE_30_2862
2015GESYMWE_30_2703NWE_30_2819
2009GESGWE_30_3038NWE_30_2818
2009HESHTBCNWE_30_280
2009GESYGWE_30_202NWE_30_2788
2009GESGWE_30_993NWE_30_2786
2009GESYGWE_32_1767NWE_30_2731
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
Polutants
Morphology
Phytobenthos (D
iatoms)
Fish
FreshWater P
earl M
ussel
Macroinverte
brates (Q
)
Donor W
aterbody
Monito
red Y (E
xtra
polated N)
Member State Code
Protected AreasSupporting ElementsBiological Elements
IE_WE_Corrib
Lake water body status (No. %)
45%
15%
40%
High Good Moderate Poor Bad
Lake water body status (Area %)
98.2%
1.5%0.2%
High Good Moderate Poor Bad
Corrib Water Management Unit Action Plan - Lakes
Status of lake water bodies within WMU
2015GESYYYGMGGMHHYCorrib Upper (Lough)WE_30_666b
2015GESYYYGMGGMHGYCorrib Lower (Lough)WE_30_666a
2009HESYHHHHHYLoughanillaunWE_30_348
2015GESYMNLoughaphreaghaunWE_30_346
2015GESYGMGGMHMYRoss LakeWE_30_345
2015GESYGMGGMGGYLettercraffroe LoughWE_30_344
2009HESYGHHHHHHYMaumwee LoughWE_30_343
2015GESYMMMYBhaile Ui Choirc ( Loch )WE_30_340
2009GESYGNParkyflaherty ( Lough )WE_30_336
2009HESYHHHHHYBofin ( Lough )WE_30_335
2009HESYHNAgraffard ( Lough )WE_30_334
2009HESYHNWE_30_326
2009HESYHNAcogga ( Lough )WE_30_325
2021GESYMNLee ( Lough )WE_30_322
2009GESGNBuffy LoughWE_30_315
2009HESHNLoughaunierinWE_30_313
2009HESYHNKip ( Lough )WE_30_303
2015GESMNCarras LoughWE_30_301
2009GESYGNWE_30_290
2009HESYHNAdrehid ( Lough )WE_30_215
Date objectiv
e
to be achieved
Objectiv
e
Drin
king
Water
Bathing W
ater
Nutrie
nt
Sensitiv
e
Waters
Special
Protectio
n
Area
Special A
rea
of
Conservatio
n
Chemical
Status
Ecological
Status
Physico
Chemical
Nutrie
nt
Enric
hment
Morphology
Fish
Chlorophyll
Macrophytes
Monito
red Y
(Extra
polated
N)
NameMember State Code
Protected AreasSupporting ElementsBiological Elements
IE_WE_Corrib