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Investigating the age of water

This document is also available in pdf format: fs Information about the age of ground water can be used to define recharge rates, refine hydrologic models of ground-water systems, predict contamination potential, and estimate the time needed to flush contaminants from ground-water systems. CFCs also can be used to trace seepage from rivers into ground-water systems, provide diagnostic tools for detection and early warning of leakage from landfills and septic tanks, and to assess susceptibility of water-supply wells to contamination from near-surface sources. During the past 50 years, human activities have released an array of chemical and isotopic substances to the atmosphere. In the atmosphere, these substances have mixed and spread worldwide. Young ground water is typically found at depths from 0 to feet in unconsolidated sediments and at depths up to feet in fractured-rock systems.

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a readily-available way of dating young (i.e. up to decades old) waters. This paper focuses on the practicalities of dating and tracing groundwater movement. Request PDF on ResearchGate | Dating of young groundwater using four anthropogenic trace gases (SF6, SF5CF3, CFC and Halon): methodology. Download Citation on ResearchGate | Dating of Young Groundwater | In can be used as a tool to trace the flow of groundwater and to define recharge rates.

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