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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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Updated aquifer maps and monthly water balances for the Nicomekl and Serpentine watersheds, located in the Fraser Valley, British Columbia.
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Author: Jacob Nunn, Ismena Bystron, Paul Kobler, Jos Beckers and Tim Bennett
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Date Published: Feb 2025
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Report ID: 63159
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Audience: Government and Public
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This report presents updated aquifer maps and monthly water balances for the Nicomekl and Serpentine watersheds, located in the Fraser Valley. Aquifer maps were updated using data from the Provincial GWELLS database and supplemental geologic information (geotechnical borehole logs, geophysical survey results). Updated aquifer mapping was completed for aquifer numbers: 42, 53, 55, 56, 1261, 57, 58, 59, 61, 62 and 1144. This updated mapping from 2019 does not include results from more recent studies. Monthly water budgets covering the 1969-2017 period were subsequently developed for the Nicomekl and Serpentine watersheds. These are aggregated watershed-scale water budgets that do not provide water balances for individual aquifers. For the Nicomekl watershed, water use is inferred to be relatively evenly spread between licensed surface water use, unauthorized surface water use and groundwater use. For the Serpentine watershed, the total water use appears to be dominated by unlicensed surface water diversions. The water budgets indicate that between 1969 and 2017, total water use in the Nicomekl watershed increased by about 218% while this increase is about 118% for the Serpentine watershed. However, on an annual basis, total water use by 2017 remained a relatively small portion of the overall water budgets for the two watersheds, comprising 10% for Nicomekl and 5% for Serpentine, respectively. Groundwater use was estimated to comprise 18% of the annual groundwater budget for the Nicomekl watershed and 3% for the Serpentine watershed by 2017. While these are small proportions, localized areas of groundwater level declines have been noted from monitoring data for aquifers 33, 41, 50 and 1144. These locations with declining water levels are correlated with aquifers with higher water use intensity.
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Report Type
Subject
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Region - Lower Mainland |
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Water Information - Groundwater |
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Water Information - Water Management |
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