Groundwater wells and springs. This database contains records of boreholes, dug wells, springs, and site investigations. Data are derived from GSI drilling, fieldwork and surveys, Local Authorities and other state bodies, Private Well Grants, Drillers, Consultants, Group Water Schemes and Academia. It is NOT a comprehensive database, and the locations of records have different precisions depending on the source data.
GSIName GSI's name for borehole/spring/trial pit/dug well
OrigName Name of bh/spring/trial pit/etc. in original study
SrcName Name of Supply Source
Type Source Type, e.g. borehole, spring, dug well, unknown
Depth_m Depth of hole (metres)
Dpth-Rck_m Depth to rock (metres)
DTRConfid Confidence in Depth to rock finding - met, presumed, unknown
DrillDate Date well or spring construction commenced
Easting Easting, six figure Irish National Grid reference
Northing Northing, six figure Irish National Grid Reference
Loc_Acc Spatial accuracy of the Grid Reference
Townland Townland name
SixInShtNo OSi Six Inch sheet number
SourceUse The use to which the source is put, e.g., public supply souce, private, etc.
Yield_m3d The yield of the source, cubic metres per day. Value given not always the sustainable yield.
YldClass The GSI yield class. Boreholes: Excellent (>400m3/d), Good (100-400m3/d), Moderate (40-100m3/d), Poor (2160m3/d), Intermediate 430-2160m3/d), Low (<430m3/d)
ProdClass The GSI Productivity Class. Related to specific capacity. Five classes range from I (best) to V (worst).
Abstr_m3d Average reported daily abstraction, cubic metres per day. Correct value when record entered, may have changed since.
Ovrflw_m3d Average daily overflow from spring, cubic metres per day.
AbstrDDm The typical drawdown in the well, in metres, for the reported daily abstraction.
SC_m3dm The specific capacity of the well (cubic metres per day per metre) at the stated daily abstraction rate.
CasngDiamm Diameter of casing at top of hole (millimetres)
Wtrstrk1_m First reported waterstrike encountered when drilling (metres)
Wtrstrk2_m Second reported waterstrike encountered when drilling (metres)
Wtrstrk3_m Third reported waterstrike encountered when drilling (metres)
Wtrstrk4_m Fourth reported waterstrike encountered when drilling (metres)
Wtrloss1_m Depth (metres) at which water loss occurred
GenComms Comments, general
DrillComms Comments, generally related to drilling conditions
CasingComs Comments, on casing, conditions when drilling, water strikes, losses, quality