| Title | Investigation of the Potsdam Group sandstone aquifer vulnerability with the DFN-M approach |
| Download | Download (whole publication) |
| Author | Pehme, P; Parker, B; Sterling, S; Crow, H; Chapman, S; Kearney, M |
| Source | Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario geoscientists open house; by Russell, H A J; Ford, D; Priebe,
E H; Holysh, S; Geological Survey of Canada, Open File 8363, 2018 p. 31, https://doi.org/10.4095/306559 (Open Access) |
| Year | 2018 |
| Publisher | Natural Resources Canada |
| Meeting | Regional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; February 28 - March 1, 2018 |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Russell, H A J; Ford, D;
Priebe, E H; Holysh, S; (2018). Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario geoscientists open house, Geological Survey of Canada, Open File
8363 |
| File format | pdf |
| Province | Ontario |
| NTS | 31G/05 |
| Area | Greely; Ottawa |
| Lat/Long WENS | -76.0000 -75.5000 45.5000 45.2500 |
| Subjects | hydrogeology; geochemistry; geophysics; groundwater; aquifers; groundwater geochemistry; groundwater resources; groundwater pollution; water quality; bedrock geology; lithology; sedimentary rocks;
sandstones; structural features; fractures; urban geology; boreholes; core samples; water wells; geophysical logging; source rocks; Potsdam Group; Nepean Sandstone; water use; agriculture; water supply; source water protection; groundwater-surface
water interaction; Phanerozoic; Cenozoic; Quaternary; Paleozoic; Ordovician; Cambrian |
| Program | Groundwater Geoscience,
Aquifer Assessment & support to mapping |
| Released | 2018 02 16 |
| Abstract | As cities grow, surrounding rural communities often experience development stresses such as increased demand on local aquifers. Rural aquifers can have different threats than city centres, such as
nitrates from agriculture or pathogens related to septic systems that may not have historically been a dominant concern, but become so under the increased water demands. Case in point is the growing community of Greely, near Ottawa, Ontario which is
surrounded by agricultural lands, homes have individual septic systems, and a shallow bedrock aquifer provides the sole water supply from a communal well. The City of Ottawa has engaged the project team to examine the deeper Nepean sandstone as an
alternative water supply. An initial borehole was continuously cored through the Paleozoic bedrock sequence into the Precambrian close to the existing pumping well. The detailed Discrete Fracture Network - Matrix (DFN-M) approach was applied
including rock core logging, chemical analysis, geophysical logging, hydrogeologic and hydro-geophysical testing, with cross-hole testing pending. We present the study approach, preliminary results and future plans. In addition to dealing with
Greely's challenges, the multiple high-resolution data sets provide insight into this complex geologic/hydrogeologic setting and an initial assessment of the sandstone's viability as a water supply elsewhere. |
| GEOSCAN ID | 306559 |
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