The concentrations of conservative solutes in seepage lakes are determined by the relative inputs of precipitation vs. groundwater. In areas of road salt application, seepage lakes may be at high risk of salinization depending on groundwater flow. Here, we revisit a 1992 analysis on the salinization of Sparkling Lake, a deep seepage lake in Northern Wisconsin. The original analysis predicted a rapid increase in chloride concentrations before reaching a steady steady of 8 mg L⁻¹ by 2020. Forty years of monitoring Sparkling Lake show that rather than reaching a dynamic equilibrium, chloride concentrations have steadily increased. We update the original box model approach by adding a soil reservoir component that shows the slow steady rise in chloride is the result of terrestrial retention. For freshwater rivers and lakes, chloride retention on the landscape will both delay chloride impairment and prolong recovery and must be considered when modeling future chloride contamination risk.

中文翻译：

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威斯康星州波光湖缓慢而稳定的盐碱化

渗流湖中保守溶质的浓度由降水与地下水的相对输入决定。在道路撒盐地区，渗水湖可能会因地下水流量而面临盐碱化的高风险。在这里，我们重温了 1992 年对威斯康星州北部深渗湖 Sparkling Lake 盐化的分析。最初的分析预测在达到稳定的 8 mg L ^{−1之前氯化物浓度会快速增加}到 2020 年。40 年的 Sparkling Lake 监测表明，氯化物浓度没有达到动态平衡，而是稳步增加。我们通过添加土壤储层组件来更新原始箱模型方法，该组件显示氯化物缓慢稳定上升是陆地滞留的结果。对于淡水河流和湖泊，景观中的氯化物滞留将延迟氯化物损害并延长恢复时间，在模拟未来氯化物污染风险时必须考虑。