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Full Name
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Ecologically Significant Groundwater Recharge Areas
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Abstract
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ESGRA are responsible for supporting groundwater discharge that helps sustain sensitive features like coldwater streams and wetlands. The ESGRA delineation methodology employs particle tracking techniques to identify, visualize and quantify the groundwater flow paths between the ecological feature and the recharge area. A groundwater model (MODFLOW) is used to determine groundwater heads and fluxes between all model cells. Virtual “particles” are released in the model and traced or tracked through the flow field to delineate three-dimensional pathways. Particle track endpoints are grouped and analyzed to establish significant amount of recharge in the area that feeds the ecological features.
This 2014 model result was built directly on an earlier SWP study to estimate groundwater recharge in the CLOCA watersheds (Earthfx, 2008) and on a study of the rates and directions of groundwater flow across the entire Regional Municipality of Durham and the CLOCA watersheds in particular (Earthfx, 2010).
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Feature Type
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Polygon
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Location
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CLOCA_INFO
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Feature Dataset
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CLOCA_INFO.GRDWATER.ESGRA
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Geographic Extent
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CLOCA Watershed
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Maintenance Status
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None Planned
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Horizontal Datum
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North American Datum 1983
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Vertical Datum
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Spatial Projection
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NAD83/UTM Zone 17N
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Access Constraint
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CLOCA Open Data Licence v1
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Use Constraint
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None - in accordance with licence agreement
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Citation
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Produced using information under License with the Central Lake Ontario Conservation Authority, © Central Lake Ontario Conservation Authority, 20** (**Insert year of publication of IP)
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Agency Originator
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Central Lake Ontario Conservation Authority
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Agency Distributor
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Central Lake Ontario Conservation Authority
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Online Linkage
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https://open-data.cloca.com/datasets/9ef331284e2f48a99a97bd3df80229e3_11
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Methodology
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Supplimental Info
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Related Documents
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Related Records
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