Scholarlink

<p>The study quantifies baseflow contributions in the Büyük Menderes River Basin, western Türkiye, using three baseflow separation techniques: the Digital Filter Method (DFM), the Smoothed Minima Technique of the British Institute of Hydrology (SMTBIH) and the Revised Smoothed Minima Technique (RSMTBIH). Daily streamflow data from eight gauging stations (1960–2015) were analyzed to compute the Baseflow Index (BFI) and assess spatial–temporal variations across elevation and season. The mean annual BFI values ranged between 0.18 and 0.62, indicating moderate to high groundwater contributions. Seasonal results revealed the highest BFI values in winter and spring (0.45–0.62) and the lowest in summer (0.18–0.30), reflecting the influence of precipitation. An elevation-dependent pattern was identified across the basin’s full elevation range (70–1067&#xa0;m), with BFI medians increasing from lowlands to mid-elevations (200–399&#xa0;m), declining at intermediate elevations (600–799&#xa0;m), and rising again toward higher altitudes. Although the limited number and uneven distribution of gauging stations across elevation classes constrain the ability to generalize basin-wide patterns, the close agreement among the three methods supports the reliability of the baseflow separation results. These findings highlight the importance of adaptive baseflow management strategies to mitigate the risks of water scarcity in the context of a changing climate.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Baseflow index estimation using digital and minima methods in the Büyük Menderes Basin

  • 期刊论文

  • 发表日期：

    2025年11月15日

查看全文
  • Merve Nur Güngör,
  • Arzu Ozkaya

摘要

The study quantifies baseflow contributions in the Büyük Menderes River Basin, western Türkiye, using three baseflow separation techniques: the Digital Filter Method (DFM), the Smoothed Minima Technique of the British Institute of Hydrology (SMTBIH) and the Revised Smoothed Minima Technique (RSMTBIH). Daily streamflow data from eight gauging stations (1960–2015) were analyzed to compute the Baseflow Index (BFI) and assess spatial–temporal variations across elevation and season. The mean annual BFI values ranged between 0.18 and 0.62, indicating moderate to high groundwater contributions. Seasonal results revealed the highest BFI values in winter and spring (0.45–0.62) and the lowest in summer (0.18–0.30), reflecting the influence of precipitation. An elevation-dependent pattern was identified across the basin’s full elevation range (70–1067 m), with BFI medians increasing from lowlands to mid-elevations (200–399 m), declining at intermediate elevations (600–799 m), and rising again toward higher altitudes. Although the limited number and uneven distribution of gauging stations across elevation classes constrain the ability to generalize basin-wide patterns, the close agreement among the three methods supports the reliability of the baseflow separation results. These findings highlight the importance of adaptive baseflow management strategies to mitigate the risks of water scarcity in the context of a changing climate.