Clonarrow or Riverlyons

37 registered freehold parcels lie mostly in Clonarrow or Riverlyons, from 83 m² to 4,565,387 m² (456.54 ha, 1,128.13 acres). The dashed line is the townland's boundary. 33 neighbouring parcels touch it.

Download the townland as DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings, or as GeoJSON or KML.

No zone of a development plan covers Clonarrow or Riverlyons in the national zoning. Outside zoned towns and villages, the county development plan's rural policies apply to each application.

Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.

• 17 Nov 2025Conditional

  a) The erection of a temporary 100m high lattice type meteorological mast which will be secured to ground anchors by stay wires and will include instruments for measuring local climate conditions, services, and associated equipment; b) A fixed red aviation light will be fitted near the top of the lattice section of the proposed meteorological mast; c) Bird flight deterrent markers fitted to each stay wire at approximately 10m intervals; and d) All associated ancillary works. The temporary meteorological mast development will remain in position for a period of 5 years after which the mast, instruments, services, equipment, and all associated ancillary works will be removed. The purpose of the meteorological mast is to accurately measure the weather conditions at this site

  Permission · Offaly County Council, 2560563

• 7 Nov 2025N/a

  the development at this site located in the townland Clonarrow or Riverlyons, Co. Offaly.The Development will consist of: a) The erection of a temporary 100m high lattice type meteorological mast which will be secured to ground anchors by stay wires and will include instruments for measuring local climate conditions, services, and associated equipment; b) A fixed red aviation light will be fitted near the top of the lattice section of the proposed meteorological mast; c) Bird flight deterrent markers fitted to each stay wire at approximately 10m intervals; and d) All associated ancillary works. The temporary meteorological mast development will remain in position for a period of 5 years after which the mast, instruments, services, equipment, and all associated ancillary works will be removed. The purpose of the meteorological mast is to accurately measure the weather conditions at this site

  Permission · Offaly County Council, 2560542

• 23 May 2025Conditional

  for the erection of 4 wind turbines. A 10-year planning permission and 35 year operational life from the date of commissioning of the entire wind farm is being sought. The planning application will be accompanied by an Environmental Impact Assessment Report (EIAR) and Natura Impact Statement (NIS). See full Development Description in attached document '7048 CWF - Development Description'.

  Permission · Offaly County Council, 2560189

• 1 May 2025N/a

  the dev.will incl.the following main components:•Erection of 4wind turbines;The candidate wind turbines for T1, T2 and T4 have a rotor diameter of 150m, a hub height of 105m and a tip height of 180m. The candidate wind turbine for T3 has a rotor diameter of 117m,a hub height of 91.5m & a tip height of 150m;•Construction of permanent Turbine Hardstands & Turbine Foundations;•Construction of new permanent internal Access Tracks & upgrade of existing internal Access Tracks;•Development of an internal site drainage network & sediment control systems;•Construction of a permanent 38kV Onsite Substation with surrounding palisade fence 2.6m in height;•Installation of battery arrays located within container units (4 no. units) and associated electrical plant for grid stabilisation adjacent to Onsite Substation building with surrounding palisade fence 2.6m in height;•All associated internal underground electrical &communications cabling connecting the wind turbines to the Onsite Substation;•All associated site development works including soil excavation, spoil storage & biodiversity enhancement measures;•Installation of a meteorological mast (32m in height) for monitoring wind speeds, set in a 5m x 5m reinforced concrete foundation with surrounding paladin fence 2.4m in height;•Installation of a Relay Mast (to re-route the Three Ireland radio link between Mount Lucas and Curragh) 19.8m in height including lightning protection rods set in an 8m x 8m reinforced concrete foundation with surrounding paladin fence 2.4m in height with an adjacent outdoor cabinet on a 3m x 2m concrete base;•Temporary Road widening and strengthening works at the R402 and L50203 junction to accommodate abnormal load deliveries;•Existing bridge on L50203 (ITM 650044E, 727144N) to be permanently upgraded to accommodate abnormal load deliveries;•Temporary bridge & temporary local access road to facilitate local traffic while the bridge upgrade works are being carried out;•Upgrade of an existing Site entrance located on a private road off the L50203; and•Construction of a Temporary Construction Compound with associated temporary site offices, parking areas, security fencing welfare facilities & wastewater holding tank. An additional Temporary Construction Compound will be constructed for the bridge upgrade & temporary bridge works. A 10 year planning permission & 35year operational life from the date of commissioning of the entire wind farm is being sought. EIAR & NIS accompany this application

  Permission · Offaly County Council, 2560151

• 8 Apr 2025Conditional

  the development of a recreational shared cycle and walkway located on Bord Na Móna lands. The development proposes the following: a) The delivery of a shared cycle and walkway on Bord na Móna lands. This will include the repurposing of 18,958 meters of existing former rail bed and 827 meters along pre-existing machine access routes. b) The proposed shared cycle and walkway will connect into the existing Grand Canal Way within the townlands of Coole and Knockballyboy; the Public Amenity Facilities at Mountlucas Wind Farm within the townlands of Clonarrow or Riverlyons and Drumcaw or Mountlucas; and the Cloncreen Wind Farm Amenity Track within the townland of Clongarret. c) The construction of car and / or bicycle parking facilities at a number of gateway locations along the proposed route and the provision of EV Charging spaces at the Gateway locations. This will include; i. 3 Type 3 Gateways, ii. 2 Type 4 Gateways, iii. 7 Minor Rest Points d) Upgrade works to 2 no. local access road crossings, and 6 no. agricultural crossings. e) Upgrade works to the Croghan Tippler Bridge (BNM Ref 37-109) and the Ballycon Rail Bridge (BNM Ref 37-112). f) The construction of a new pedestrian and cycle bridge extending to 30.5 meters spanning the Grand Canal within the Coole townland, located adjacent to the existing Grand Canal lift bridge (BNM Ref 37-05). g) The erection of wayfinding and interpretative signage at Gateway locations along the route. h) The implementation of Sustainable Drainage Systems (SuDS) nature-based drainage proposals at the Gateway locations to cater for surface water drainage at car park locations. i) Fencing and screening will be erected where required for biodiversity reasons which will include 7,636 meters of ecological screening. j) All other ancillary and associated site work. This Planning Application is accompanied by a Natura Impact Statement (NIS)

  Permission · Offaly County Council, 2560115

• 29 Jan 2025N/a

  the development of a recreational shared cycle and walkway located on Bord Na Móna lands. The development proposes the following: a) The delivery of a shared cycle and walkway on Bord na Móna lands. This will include the repurposing of 18,958 meters of existing former rail bed and 827 meters along pre-existing machine access routes. b) The proposed shared cycle and walkway will connect into the existing Grand Canal Way within the townlands of Coole and Knockballyboy; the Public Amenity Facilities at Mountlucas Wind Farm within the townlands of Clonarrow or Riverlyons and Drumcaw or Mountlucas; and the Cloncreen Wind Farm Amenity Track within the townland of Clongarret. c) The construction of car and / or bicycle parking facilities at a number of gateway locations along the proposed route and the provision of EV Charging spaces at the Gateway locations. This will include; i. 3 Type 3 Gateways, ii. 2 Type 4 Gateways, iii. 7 Minor Rest Points. d) Upgrade works to 2 no. local access road crossings, and 6 no. agricultural crossings. e) Upgrade works to the Croghan Tippler Bridge (BNM Ref 37-109) and the Ballycon Rail Bridge (BNM Ref 37-112). f) The construction of a new pedestrian and cycle bridge extending to 30.5 meters spanning the Grand Canal within the Coole townland, located adjacent to the existing Grand Canal lift bridge (BNM Ref 37-05). g) The erection of wayfinding and interpretative signage at Gateway locations along the route. h) The implementation of Sustainable Drainage Systems (SuDS) nature-based drainage proposals at the Gateway locations to cater for surface water drainage at car park locations. i) Fencing and screening will be erected where required for biodiversity reasons which will include 7,636 meters of ecological screening. j) All other ancillary and associated site work. This Planning Application is accompanied by a Natura Impact Statement (NIS)

  Permission · Offaly County Council, 2560023

Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.

Designated sites

No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Clonarrow or Riverlyons.

Recorded monuments

• OF018-010001 Church
  Description

  There is a field adjacent to Clonarrow House which is known locally as a burial site though no surface traces survive. About 500m N of the burial ground there is a field known locally as the `Church Field' (OF018-034----) which may have been connected to the burial ground. No surface traces of any church were visible in this graveyard. Comerford (1883, 306) describes the site as an ancient and long disused graveyard. The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research. Date of upload: 23 May 2011

• OF018-010002 Burial ground
  Description

  Possibly 17th or 18th century burial ground enclosed by low wall and bank. Interior contains burial markers but no inscribed stones. No evidence of any building. There is a field adjacent to Clonarrow House which is known locally as a burial site though no surface traces survive. About 500m N of the burial ground there is a field known locally as the `Church Field' (OF018-034----) which may have been connected to the burial ground. No surface traces of any church were visible in this field. Comerford (1883, 306) describes the site as an ancient and long disused graveyard. The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research. Date of upload: 23 May 2011

• OF018-010003 House - 18th/19th century
  Description

  Clonarrow House of 18th or 19th century in date. The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research. Date of upload: 23 May 2011

• OF018-012 Enclosure
  Description

  Crop of enclosure shows on aerial photo (GSI 542/3). Not visible at ground level. Not visible at ground level. Aerial photographs (GSI, N 542/3) shows clear cropmark of circular enclosure. The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research. Date of upload: 23 May 2011

• OF018-013 Mound
  Description

  Marked on all eds. OS 6-inch maps as a mound. Does not show on aerial photos and present owner has no recollection of site. Not visible at ground level. The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research. Date of upload: 23 May 2011

• OF018-136 Road - class 3 togher
  Description

  The site (L 14.26m; Wth 1.57m min.; D 0.05m) is orientated ESE-WNW and is largely destroyed. The length of the site is derived from a spread of material across the field surface and the precise width of the structure could not be ascertained. Where examined, it consists of twenty-six fragmented pieces of light brushwood and two light roundwoods, longitudinally and transversely laid. Most of the wood is in poor condition and evidence for branch-trimming was noted. It is set in moderately humified Sphagnum peat with occasional Eriophorum and ericaceous remains. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-137 Structure - peatland
  Description

  A deposit (L 1.24m min.; Wth 0.77m min.; D 0.05m min.) of over fourteen pieces of mixed brushwood, a light roundwood and occasional twigs on the field surface. The elements are regularly and densely laid, one piece in depth, with the majority of the brushwood orientated SE-NW. The roundwood underlies the brushwood and is perpendicular to it. This wood is in moderate condition with branch-trimming and toolmarks evident. It is set in well-humified Sphagnum peat with frequent Eriophorum and ericaceous remains and occasional fibrous roots. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-138 Structure - peatland
  Description

  Over twenty-six fragmented pieces of light brushwood and occasional twigs on the field surface (L 1.14m min.; Wth 0.88m min.; D 0.03m). The wood is irregularly laid, in poor condition and has been damaged and partially displaced by milling. It is set in moderately humified Sphagnum peat with occasional Eriophorum and ericaceous remains. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-139 Structure - peatland
  Description

  An irregular spread of over thirty-five pieces of brushwood on the field surface (L 3.2m; Wth 2m; D 0.1m min.). On the E side the wood is denser and irregularly laid with a general E-W orientation to the elements. To the W, this material diminishes and may have been affected by milling. The brushwood (diam. 0.015-0.05m) is up to three pieces in depth. This site is set in poorly humified Sphagnum peat with occasional ericaceous remains and fibrous roots. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-140 Road - class 3 togher
  Description

  The site (L 28.19m; Wth 1.62m min.; D 0.09m min.) is orientated ESE-WSW. At its E end it consists of over fifty pieces of mixed brushwood, transversely and irregularly laid, three to four pieces in depth. The transverses (diam. 0.03-0.042m) are closely set and parallel. One underlying element is set longitudinally with lighter brushwood irregularly laid to the S. Many of these lighter elements are displaced and in semi-upright positions. The wood is in quite poor condition with some pieces partially milled and very fragmented. Two fragments of a leather shoe (02E0839:1a-b) were recovered from the site. A further fragment of leather (02E0839:2) was recovered 3.1m to the N. A number of toolmarks were noted and the site lies in homogenous, moderately humified Sphagnum peat with frequent fibrous roots and occasional Eriophorum. This site has been radiocarbon dated to cal. AD 1402-1480 (Wk-11715). Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-141 Structure - peatland
  Description

  A single stake (L 0.37m min.; diam. 0.04m) on the field surface, set at a 45° angle, which is partially decayed at its base. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-142 Structure - peatland
  Description

  Scattered plank fragments and wood-chips at two sightings on the field surface (L 9.23m min.; Wth 0.96m; D 0.1m min.). The fragments formed part of a single tangentially split plank (Wth 0.225m max.; D 0.03m). Within the disturbed spread, the material to the NW is more concentrated than that to the SE. Much of it is displaced and in a semi-upright position. The site is in poorly humified Sphagnum peat with occasional Eriophorum. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-143 Structure - peatland
  Description

  A small, irregular scatter of brushwood (L 1.94m; Wth 1.54m min.; D 0.11m) on the field surface with an associated artefact (02E0839:4a-c). The predominant element in the site is a piece of heavy brushwood orientated NE-SW. The remaining material consists of lighter, shorter elements, irregularly deposited to either side of this piece, with most of the material to the SE. One of the worked pieces of light brushwood has been radiocarbon dated to cal. AD 1285-1413 (Wk-11716). The site is in moderately humified Sphagnum peat with frequent fibrous roots. SMR OF018-146---- is 4.58m to the SE. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-144 Structure - peatland
  Description

  An irregular scatter of over fifteen pieces of brushwood on the field surface (L 3.07m; Wth 1.31m; D 0.05m). It appears to represent the remnants of a more substantial site that has been severely machine damaged. The brushwood (diam. 0.01-0.027m) has been fragmented into short lengths although it appears to be in situ. This surviving wood is in good condition and a number of toolmarks are present. The site is in moderately humified Sphagnum peat with frequent fibrous roots and occasional Eriophorum. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-145 Structure - peatland
  Description

  An irregular spread of over twenty pieces of mixed brushwood on the field surface (L 2.37m min.; Wth 2.98m; D 0.11m). Some of the marginal pieces are parallel, set up to 0.51m apart, with the intervening pieces more irregularly laid. The spread is denser at the SW extent and further pieces of heavy brushwood are evident beyond the examined area. The wood is in good condition and is very straight and regular. This site is in homogenous, moderately humified Sphagnum peat with frequent fibrous roots. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-146 Structure - peatland
  Description

  Two machine damaged pieces of brushwood (L 0.42m; Wth 0.1m; D 0.08m min.) that may have formed a single piece. The site is set in moderately humified Sphagnum peat with occasional Eriophorum. SMR OF018-143---- is 4.58m to the NW. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-147 Structure - peatland
  Description

  A dispersed, irregular deposit of over sixteen pieces of mixed brushwood (L 2m min.; Wth 1.91m min.; D 0.09m min.). The elements are up to two pieces in depth. This wood is in good condition with evidence of branch-trimming. The site is in moderately humified Sphagnum peat with occasional Eriophorum and ericaceous remains. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-148 Road - class 1 togher
  Description

  The site (L 412.4m; Wth 4.88m; D 0.31m) is orientated approximately NE-SW but this varies somewhat along its length. The site maintains a consistent structure along much of its length although it survival varies considerably. It is dominated by transversely laid brushwood and roundwoods with pegs and occasional radially split timbers at some of the central sightings. There are variations in the surviving width (Wth 2.1-4.88m) and the depth (D 0.05-0.31m) along the length of the site. All of the sightings have suffered a degree of machine damage and most of the wood is in poor condition. There is also extensive evidence of decay in this wood, possibly the result of insect infestation. Degraded toolmarks and a possible mortice were noted at one sighting which lies in moderately humified Sphagnum peat with occasional Eriophorum, ericaceous remains and unidentified reeds. The site has been dendrochronologically dated to 122±9 BC or later (Q10348). SMR OF018-163---- and SMR OF018-160---- are within 5m of the S extent of this site. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-149 Post row - peatland
  Description

  The site (L 24.69m; Wth 0.58m; D 0.91m) is orientated NNE-SSW and consists of eighteen posts and stakes. Where recorded, at the center of the site are four dispersed split stakes and a split post (diam. 0.04-0.065m). The elements are intermittently spaced. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-150 Structure - peatland
  Description

  A worked tree trunk, roundwoods and brushwood on the field surface (L 3.35m; Wth 0.89m min.; D 0.24m). The tree trunk (diam. 0.09-0.19m) is orientated NW-SE and as it narrows the number of side branches increases. Directly this, lying perpendicular to it, are four roundwoods (diam. 0.083-0.202m). Six pieces of brushwood (diam. 0.04-0.052m) are irregularly laid both below and at the same level as the tree trunk. At its widest end the tree trunk has a degraded wedge point. The wood is in a poor condition and lies in well-humified Sphagnum peat with occasional ericaceous remains. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-151 Road - class 3 togher
  Description

  The site (L 13.62m min.; Wth 5.64m; D 0.1m) appears to be orientated NE-SW and is severely damaged. It is composed of closely spaced, transverse brushwood (diam. 0.01-0.052m) with some light roundwoods and occasional twigs. The brushwood continues beyond the exposed area. The wood is in very poor condition and set in moderately humified Sphagnum peat with Phragmites and Menyanthes seeds. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-152 Road - class 3 togher
  Description

  The site (L 2.5m min.; Wth 2.38m min.; D 0.11m min.) consists of heavy brushwood with some light roundwoods and occasional twigs exposed on the field surface. Most of the elements are orientated N-S with a perpendicular roundwood supporting the upper elements. The orientation of the site could not be determined. Some of the larger elements may have been half-split and a degraded chisel point was noted. The wood is fragmentary with modern burning and set in moderately humified Sphagnum peat with ericaceous remains. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-153 Structure - peatland
  Description

  An irregular spread of brushwood and some twigs (L 1.9m; Wth 1.17m; D 0.11m). The brushwood (diam. 0.012-0.05m) is interspersed with roots. Three metal-cut worked ends were noted and the wood is set in moderately humified Sphagnum peat with ericaceous remains. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-154 Road - class 3 togher
  Description

  The site (L 3.25m; Wth 2.18m; D 0.23m) is orientated E-W and consists of very regular, densely laid, light brushwood and roundwoods with occasional twigs. At the E extent of the site there is a large tree stump, however, a relationship between the two is unclear. The wood is in a good condition with a wedge point and a chisel point present. It lies in moderately humified Sphagnum peat with Eriophorum. This site has been radiocarbon dated to 791-404 cal. BC (Wk-11717). Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-155 Road - class 3 togher
  Description

  The site (L 8.6m min.; Wth 3.63m; D 0.14m) is orientated NE-SW and composed of transverse roundwoods and brushwood. The roundwoods (diam. 0.1m max.) are regularly laid and closely set with some intermixed brushwood. A number of roundwoods with metal-cut wedge points were noted. The wood is in poor condition and set in poorly humified Sphagnum peat with Eriophorum and fibrous roots. Radiocarbon dated to 391-63 cal. BC (Wk-11722). Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-156 Road - class 3 togher
  Description

  The site (L 3.42m min.; Wth 2.16m min.; D 0.17m) consists of brushwood with occasional roundwoods and twigs. The brushwood (diam. 0.012-0.052m) and roundwoods (diam. 0.073-0.088m) are closely set and orientated in a NE-SW direction. These overlie a lower layer of less dense brushwood (diam. 0.043-0.052m) orientated N-S. The overall site orientation could not be determined. A single, degraded, metal-cut worked end was noted and the wood is in moderate condition and machine damaged. The site is set in moderately humified Sphagnum peat. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-157 Structure - peatland
  Description

  A regular deposit of brushwood (L 2.63m min.; Wth 2.74m; D 0.07m). The brushwood (diam. 0.023-0.046m) is set parallel 0.02-0.15m apart, orientated NW-SE. A single, degraded, worked end was noted and the wood is in poor condition. Machine damage has removed the centre of the site. It is set in moderately humified Sphagnum peat with natural wood and some Eriophorum in the S area. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-158 Structure - peatland
  Description

  A dispersed, irregular deposit of roundwoods and some brushwood (L 4.08m min.; Wth 3.02m; D 0.19m). The roundwoods (diam. 0.063-0.096m) and pieces of brushwood (diam. 0.02-0.045m) are in small, overlying groups of parallel pieces with no apparent orientation to the structure. The upper levels of wood are in poor condition and a number of degraded, metal-cut worked ends were noted. The site is set in moderately humified Sphagnum peat with frequent roots and occasional Eriophorum and conifer cones. There is a tree stump abutting the E extent of the site. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-159 Structure - peatland
  Description

  A deposit of ten pieces of brushwood and a roundwood partially exposed on the field surface (L 1.43m; Wth 0.53m; D 0.19m). Most of the pieces of brushwood (diam. 0.02-0.055m) and the roundwood (diam. 0.08m) are parallel and orientated NW-SE, sloping downward to 0.26m below the field surface. The exposed wood is in poor condition and a single worked end was noted. The site is set in moderately humified Sphagnum peat. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-160 Road - class 2 togher
  Description

  The site (L 30.1m; Wth 2.5m; D 0.05m) is orientated ENE-WSW. It consists of over thirty pieces of mixed brushwood and occasional twigs, which are transversely laid and closely set in a single layer. Longitudinal roundwoods bound the edge of the site at two sightings. The wood is in a moderate condition and metal-cut toolmarks and branch-trimming were noted. It is in moderately humified Sphagnum peat with Eriophorum and ericaceous remains. SMR OF018-148---- lies 4.93m SE of the SW extent. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-161 Road - class 3 togher
  Description

  The site (L 1.14m min.; Wth 2.1m; D 0.08m) is orientated NNW-SSE and composed of regularly spaced longitudinal brushwood (diam. 0.03-0.05m), a light roundwood and some twigs. Upper elements appear to have been removed by machine damage. Two metal-cut worked ends are present. The wood is in poor condition and machine damaged. Displaced wood fragments indicate the site may have continued for at least a further 10m to the NNW. It is set in moderately humified Sphagnum peat with Eriophorum and large amounts of roots and ericaceous remains. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-162 Road - class 2 togher
  Description

  The site (L 20.7m min.; Wth 3.4m min.; D 0.1m min.) consists of the substructure of a severely damaged togher of brushwood, roundwoods and pegs on the field surface. Where recorded at the N end, the remains consist of broken, transverse light roundwoods. These overlie dense brushwood (diam. 0.015-0.054m), broken to short fragmentary lengths (L 0.353m max.). There were at least seventeen pegs (L 0.38-0.47m; diam. 0.025-0.045m) present across the width of the site with a higher concentration on the W side. Most of the pegs are set at c. 45° angles with a slight indication of pairing on either side of the site. The uppermost wood is in moderate condition and a number of metal-cut worked ends were noted. At the S end, the site is of similar dimensions but only survives as fragmentary and disturbed brushwood. It is set in moderately humified Sphagnum peat with Eriophorum and ericaceous remains. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-163 Structure - peatland
  Description

  A large deposit of mixed brushwood, light roundwoods and occasional twigs (L 3.36m min.; Wth 1.45m min.; D 0.3m min.). The site has been extensively disturbed but light brushwood, twigs and pieces of root are present up to six pieces in depth. To the E of this are lighter elements that appear to be ex situ. To the W the material is less disturbed and consists of densely laid brushwood and roundwoods, orientated NE-SW. Although highly fragmented, the wood within the site is in good condition. Branch-trimming and two metal-cut wedge points were noted. This site appears to be overlaid by moderately humified Sphagnum peat with a large amount of bark, wood chips and forest debris. SMR OF018-148---- lies c. 5m to the NE. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-164 Road - class 3 togher
  Description

  The site (L 2.63m min.; Wth 0.78m; D 0.03m) consists of longitudinal brushwood and some twigs on the field surface IT has been damaged but the surviving elements (diam. 0.02-0.059m) are parallel and regularly spaced. The wood is in poor condition and set in moderately humified Sphagnum peat with Eriophorum and tree root. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-165 Road - class 3 togher
  Description

  The site (L 3.96m min.; Wth 1.89m min.; D 0.08m) is orientated N-S. It is composed of evenly spaced longitudinal roundwoods, brushwood, a split-timber, twigs and a peg. The split timber (Wth 0.18m) and pegs (diam. 0.02-0.03m) are located on the W side of the site. The roundwoods (diam. 0.06-0.09m) and brushwood (diam. 0.02-0.03m) are grouped 0.4m from the timber. This wood is machine damaged and in poor condition with no evidence of toolmarks. The site is set in poorly humified Sphagnum peat with occasional unidentified reeds. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-166 Structure - peatland
  Description

  A deposit of brushwood, mixed roundwoods, occasional twigs and a peg on the field surface (L 0.92m min.; Wth 0.9m min.; D 0.25m). Three roundwoods are orientated E-W, below which are a further five, orientated NW-SE. The brushwood (diam. 0.02-0.05m) is irregularly laid. A single peg, set at an angle of 85° is located at the S edge of the site. The wood is in a poor condition but sampling revealed better preserved material at a greater depth. This site lies in moderately humified Sphagnum peat with fibrous roots. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-167 Structure - peatland
  Description

  An dense deposit of brushwood, roundwoods and some bark and twigs (L 2.1m min.; Wth 1.07m min.; D 0.25m). All of the brushwood (diam. 0.01-0.059m) and roundwoods (diam. 0.06-0.09m) are interlaced with natural elements and the site identification is based on an apparent diversity of wood species and a degree of regularity in arrangement of the components. The wood is in moderately humified Sphagnum peat with roots, natural wood, ericaceous remains, fibrous roots and occasional unidentified reeds and nuts. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-168 Platform - peatland
  Description

  The site (L 13.41m min.; Wth 13.39m; D 0.19m min.) consists of a dense arrangement of parallel roundwoods (diam. 0.075-0.106m) and brushwood (diam. 0.03-0.034m) orientated NW-SE. These are overlain by a perpendicular arrangement of heavier roundwood, occasional brushwood and some twigs. Some of the larger elements appear to be partially interwoven. In general, the wood is very crushed and desiccated, particularly the upper exposed material. The site is in moderately humified Sphagnum peat with frequent ericaceous wood fragments and occasional unidentified reeds. This site has been dendrochronologically dated to 1570±9 BC or later (Q10349). Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-169 Road - class 2 togher
  Description

  The site (L 23.63m min.; Wth 1.5m min.; D 0.1m min.) consists of intermittent groups of stakes and a dense, irregular deposit of brushwood and twigs. At the S and N extents, the site is defined by two groups of three stakes. There is a further group of stakes at the centre of the site, adjacent to the surviving horizontal brushwood. The brushwood (L 1.5m max.; diam. 0.02-0.06m) is fragmentary, partially disturbed. The recorded stakes (L 0.42-0.72m; diam. 0.0.3-0.06m) are set at 45-80° angles. Two of the stakes are half-splits with most of the others dressed to pencil points with metal-cut toolmarks. This site is in moderately humified Sphagnum peat with some ericaceous remains and fibrous roots. There is a tree stump adjacent to the stakes at the S end of the site and the E end of SMR OF018-172---- is 1.53m further to the S. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-170 Structure - peatland
  Description

  A single stake (L 0.5m min.; diam. 0.06m) on the field surface set at a 30° angle. Recorded by the Irish Archaeological Wetland Unit (University College, Dublin) in 2002. The evidence is not sufficient to warrant its acceptance as the remains of an archaeological monument. The original survey description was compiled by the Irish Archaeological Wetland Unit (University College, Dublin). Assessed and revised by: Caimin O'Brien, Paul Walsh Date of upload: 23 May 2011

• OF018-171 Post row - peatland
  Description

  The site (L 24.86m; Wth 1.5m; D 0.81m min.) is orientated NE-SW and consists of 12 posts and stakes. Two pieces of fragmented horizontal brushwood are also associated with this site. The uprights (L 0.14-0.81m; diam. 0.036-0.08m) are regularly arranged, in general they are 0.3-2.2m apart with a cluster of three, which are closely set. They occur at 45-90° angles. Three of posts are split and multi-faceted metal-cut worked ends were recorded on four other elements. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-172 Road - class 3 togher
  Description

  The site (L 10.4m min.; Wth 0.74m min.; D 0.07m) is orientated E-W and composed of over twenty-two pieces of brushwood (diam. 0.01-0.04m) and a roundwood (diam. 0.07m), most of which are longitudinally laid. This wood is densely arranged, one to two pieces in depth. Although some milling damage has occurred the wood is generally in good condition. Woodworking is evidenced by some toolmarks and branch-trimming. It is in poorly humified Sphagnum peat with occasional Eriophorum and unidentified reeds. Radiocarbon dated to 400-118 cal. BC (Wk-11720). The S end of SMR OF018-169---- is 1.53m to the N. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-173 House - Iron Age
  Description

  The site was reported by Mr J. Kilmurray (BnM Bog Supervisor Mountlucas and Clonad Bogs). The walls of the structure (dims. 4m N-S x 4m E-W; H 2m) were composed of planks laid edge to edge and the floor, or possibly the collapsed roof, consisted of heather. Pegs secured the external corners where the ends of the planks protruded beyond the ends of each wall. Entry into the structure was via a 'trap gate' device. Items contained within the structure included a 'wooden spool' and a circle of burnt timbers. There was also a sub-rectangular timber object (L c. 0.6m; Wth c. 0.12m D c. 0.05m). with flat sides through which ran a circular perforation containing a cylinder shaped wooden 'handle'. It apparently tapered near the end with the 'handle' and had 'grit' embedded in the other end. This 'grit' was thought to be a consequence of the object being used either for shovelling or for pounding. This site was most likely Iron Age or later in date as it was situated above SMR OF018-157----, which was dendrochronologically dated to 122±9 BC or later. No remains of this structure survive. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-174 Road - class 1 togher
  Description

  The site (L 640m min.) was reported by Mr J. Kilmurray (BnM Bog Supervisor Mountlucas and Clonad Bogs). It was orientated approximately NW-SE and consisted of transverse planks with occasional mortices. This site was most likely Iron Age or later in date as it was situated above SMR OF018-157----, which was dendrochronologically dated to 122±9 BC or later. No remains of this structure survive. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

• OF018-175 Road - class 1 togher
  Description

  The site (L 670m min.) was reported by Mr J. Kilmurray (BnM Bog Supervisor Mountlucas and Clonad Bogs). It was orientated approximately N-S and consisted of transverse planks, which were morticed in some cases. It extended S into Ballynakill townland and may have formed part of SMR OF018-123----. Compiled by: Irish Archaeological Wetland Unit (University College Dublin). Date of upload: 23 May 2011

Architectural heritage

No building of the National Inventory of Architectural Heritage stands in the townland of Clonarrow or Riverlyons.

Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).

Radon

At the centre of the townland of Clonarrow or Riverlyons, about 1 in 10 homes in this area is likely to have high radon levels. Testing a home

Landslides

The 1:50,000 map rates the landslide susceptibility here as low, partly inferred.

Terrain model

LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_2159 (ZIP).

Flooding

The Office of Public Works publishes its flood maps on floodinfo.ie.

Radon Risk Map of Ireland, Environmental Protection Agency, and Landslide Susceptibility Classification, Geological Survey Ireland, both under CC BY 4.0. LiDAR: contains Irish Public Sector Data (Geological Survey Ireland & the Office of Public Works) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.

No address of the register names Clonarrow or Riverlyons with five sales or more. The sales of the area are on the page of Co. Offaly.

Name

Clonarrow or Riverlyons · Cluain Arbhach

Area

7,673,177 m² (767.32 ha, 1,896.08 acres)

Civil parish

Kilclonfert, and its townlands

Barony

Philipstown Lower

Electoral division

Mountbriscoe, the unit of the census

Census 2022

268 people lived in 82 households in the Mountbriscoe electoral division. 96% of households owned their home. 26% of homes were built since 2001. 9% of dwellings stood vacant on census night, and 0% were holiday homes.

Neighbouring townlands

Ballynakill, Brackagh, Castlebarnagh Big, Drumcaw or Mountlucas, Esker Beg, Island, Killoneen, Oldtown, Scrub or Pigeonpark

Placenames

Clonarrow or Riverlyons on logainm.ie, the Placenames Database of Ireland

Townlands, civil parishes, baronies and electoral divisions, National Statutory Boundaries, Tailte Éireann, CC BY 4.0. Census 2022, Small Area Population Statistics by electoral division, Central Statistics Office, CC BY 4.0. A townland is the smallest land division of Ireland, and the unit of a rural address. Old registers such as the 1901 and 1911 censuses file it under its civil parish and barony.