| Title | Canadian Groundwater Inventory: regional hydrogeological characterization of the south-central part of the Maritimes Basin |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Rivard, C ;
Michaud, Y; Deblonde, C; Boisvert, V; Carrier, C; Morin, R H; Calvert, T; Vigneault, H; Conohan, D; Castonguay, S; Lefebvre, R; Rivera, A; Parent, M |
| Source | Geological Survey of Canada, Bulletin 589, 2008, 96 pages; 1 CD-ROM, https://doi.org/10.4095/223958  Open Access |
| Year | 2008 |
| Alt Series | New Brunswick Department of Environment, New Brunswick Environmental Reporting Series |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; CD-ROM; digital; on-line |
| Related | This publication is related to Hydrogeological atlas of the
south-central area of the Maritimes Carboniferous basin |
| File format | pdf (Adobe® Reader® v. 6.0 is included / est fourni) |
| Province | New Brunswick; Nova Scotia; Prince Edward Island |
| NTS | 11E/13; 11L/04; 11L/05; 11L/12SE; 11L/12SW; 21H/14; 21H/15; 21H/16; 21I/01; 21I/02; 21I/03; 21I/06; 21I/07; 21I/08; 21I/09SE; 21I/09SW; 21I/10SE; 21I/10SW; 21I/11SE; 21I/11SW |
| Area | Harcourt; Bouctouche; Shediac; Moncton; Sallsbury; Petitcodiac; Sackville; Caledonia Mountains; Amherst; Cobequid Mountains; Summerside; Borden |
| Lat/Long WENS | -65.5000 -63.5000 46.6333 45.7500 |
| Subjects | hydrogeology; regional geology; stratigraphy; structural geology; surficial geology/geomorphology; geochemistry; mathematical and computational geology; geophysics; groundwater; aquifers; bedrock
aquifers; groundwater resources; resource estimation; resource management; regional planning; water utilization; water wells; groundwater regimes; groundwater flow; hydrodynamics; recharge rates; hydraulic analyses; hydraulic conductivity;
transmissivity; specific yield; modelling; bedrock geology; structural controls; faults; fractures; sedimentary rocks; hydrostratigraphic units; pump tests; permeability; porosity; water quality; groundwater pollution; salinity; water levels;
groundwater levels; piezometric levels; boreholes; geophysical logging; resistivity logging; geophysical surveys; seismic surveys, ground; seismic surveys, marine; water analyses; geochemical analyses; major element analyses; trace metals; trace
element analyses; nitrate; acidity; total dissolved solids; hydrologic budget; meteorology; surface waters; stream flow; hydrographs; glacial deposits; tills; till stratigraphy; till samples; grain size analyses; organic deposits; peatlands; soils;
soil samples; whole rock analyses; remote sensing; physiography; topography; hydrography; land use; compilation; Maritimes Basin; Appalachian Province; Moncton sub-basin; Marysville sub-basin; Central sub-basin; Sackville sub-basin; Cumberland
sub-basin; Magdalen sub-basin; Prince Edward Island Group; Richibucto Formation; Boss Point Formation; Hillsborough Formation; Databases; Phanerozoic; Cenozoic; Quaternary; Paleozoic; Permian; Carboniferous; Devonian |
| Illustrations | sketch maps; tables; photographs; logs; cross-sections; time series; stratigraphic charts; geophysical logs; profiles; cross-plots; rose diagrams; stereonets; plots; bar graphs; Box-and-whisker
diagrams; hydrographs; block diagrams; pie charts; graphs; schematic representations; ternary diagrams; models; variation diagrams; histograms |
| Program | Maritimes Groundwater Initiative |
| Program | New Brunswick Department of Environment
and Local Government, Funding Program |
| Program | Prince Edward Island Department
of Environment, Energy and Forestry, Funding Program |
| Program | Nova Scotia Environment and Labour, Funding Program |
| Released | 2008 04 01 |
| Abstract | The Maritimes Groundwater Initiative (MGWI) is a large, integrated, regional hydrogeological study focusing on a representative area of the Maritimes Basin in eastern Canada. The study area covers a
land surface of 10 500 km2, of which 9 400 km2 are underlain by sedimentary rocks. This sedimentary bedrock is composed of a sequence of discontinuous strata of highly variable hydraulic properties, and is generally overlain by a thin layer of
glacial till (mostly 4-8 m, but can reach 20mthick). Depending on the area, 46 to 100% of the population relies on groundwater for water supply, either from municipal wells or from private residential wells. The main objectives of this project were
to improve the general understanding of groundwater-flow dynamics and to provide baseline information and tools for a regional groundwater-resource assessment. This bulletin presents the current state of understanding of this hydrogeological system,
along with the methodology used to characterize and analyze its distinct behaviour at three different scales.
This regional bedrock aquifer system contains confined and unconfined zones, and each of its lenticular permeable strata extends only a
few kilometres. Preferential groundwater recharge occurs where sandy till is present. The mean annual recharge rate to the bedrock is estimated to range between 130 and 165 mm/a. Several geological formations of this basin provide good aquifers, with
hydraulic conductivity in the range 5 x 10-6 to 10-4 m/s. Based on results of numerical flow modelling, faults were interpreted to have a key role in the regional flow. Pumping-test results revealed that the fractured aquifers can locally be very
heterogeneous and anisotropic, but behave similarly to porous media. Work performed at the local scale indicated that most water-producing fractures seem to be subhorizontal and generally oriented in a northeasterly direction, in agreement with
regional structures and pumping-test results. Almost all residential wells are shallow (about 20 m) open holes that are cased only through the surficial sediments. |
| GEOSCAN ID | 223958 |
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