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Report: Watershed Modelling to Support Water Allocation and Planning in the Shawnigan Creek Watershed, Vancouver Island, B.C.
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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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An integrated, physically based, three-dimensional numerical model of surface water and groundwater flow has been developed for the Shawnigan Creek watershed on Vancouver Island, B.C.
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Author: Chris Donnelly, David van Everdingen, Dan Ciobotaru, and Jessica Doyle
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Date Published: Dec 2024
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Report ID: 63121
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Audience: Government and Public
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An integrated, physically based, three-dimensional numerical model of surface water and groundwater flow has been developed for the Shawnigan Creek watershed on Vancouver Island, B.C. using HydroGeoSphere. Key modelling objectives were to: 1) quantify annual and monthly water balances that describe the primary inputs and outputs from the watershed; 2) quantify hydraulic connections between aquifers and streams; 3) quantify cumulative effects of combined surface water and groundwater use on the water balance and hydraulic connection between aquifers and streams; and 4) quantify the potential impacts of a future (conservative) climate projection on the water balance and hydraulic connection between aquifers and streams. Modelling results suggest that water use has a small influence on the water balance at the watershed scale but, depending on the direction of hydraulic connection, can lead to increased water losses from streams or reduced water gains to streams. The modelling project illustrates an approach to support the Provinces efforts to conjunctively manage surface water and groundwater and provides watershed-specific information that can be used by statutory decision makers when considering water license applications.
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Report Type
Subject
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Region - Vancouver Island |
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Watershed Groups - 930 - Vancouver Island (West) Rivers |
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Water Information - Groundwater |
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Water Information - Water Management |
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