Southern Gulf Islands Groundwater Availability Assessment Report, 2021
· Southern Islands · Reports & Publications · 2021
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Topics: Marine & foreshore · Fresh water & aquifers · Transportation & ferries · Governance & budget — our classification, not the Trust's.
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October 18, 2021 Project No.19-53 __________________________________________________________________________________________________________________________________________________________________________________________________________ GW Solutions Inc. Unit 24 – 4800 Island Hwy, Nanaimo, BC, V9T 1W6 Tel. (250) 756-4538 * abarroso@gwsolutions.ca Islands Trust Area Groundwater Availability Assessment Prepared for: Islands Trust Prepared by: GW Solutions Inc. October 2021 Islands Trust Area Groundwater Availability Assessment October 18, 2021 ___________________________________________________________________________________________________________________________________________________________________________________________________ _______________________________________________________________________________________________________________________________________________________________________________________________________ Page ii Project No.19-53 Table of Contents 1 EXECUTIVE SUMMARY ..................................................................................................................................................... 1 2 GROUNDWATER AVAILABILITY ASSESSMENT.............................................................................................................. 1 2.1 ESTIMATION OF WATER USE ............................................................................................................................................. 2 2.1.1 Estimation of Surface Water Withdrawals ............................................................................................................. 2 2.1.2 Estimation of Groundwater Withdrawals ............................................................................................................... 6 2.1.4 Water Use Estimation Results ............................................................................................................................ 13 2.2 WATER BALANCE MODEL ............................................................................................................................................... 14 2.2.1 Model Methodology ............................................................................................................................................. 14 2.2.2 Data Inputs .......................................................................................................................................................... 16 2.2.3 Data Outputs ....................................................................................................................................................... 18 2.2.4 Sensitivity Analysis Water Balance Model .......................................................................................................... 18 3 CONCLUSIONS .....................................................................................................................
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