The favorable overall conditions for the utilization of groundwater in fluvioglacial aquifers are impacted by significant heterogeneity in the hydraulic conductivity, which is related to small-scale facies changes. Knowledge of the spatial distribution of hydraulically relevant hydrofacies types (HF-types), derived by sedimentological analysis, helps to determine the hydraulic conductivity distribution and thus contribute to understanding the hydraulic dynamics in fluvioglacial aquifers. In particular, the HF-type “open framework gravel (OW)”, which occurs with the HF-type “bimodal gravel (BM)” in BM/OW couplings, has an intrinsically high hydraulic conductivity and significantly impacts hydrogeological challenges such as planning excavation-pit drainage or the prognosis of plumes. The present study investigates the properties and spatial occurrence of HF-types in fluvioglacial deposits at regional scale to derive spatial distribution trends of HF-types, by analyzing 12 gravel pits in the Munich gravel plain (southern Germany) as analogues for outwash plains. The results are compared to the reevaluation of 542 pumping tests. Analysis of the HF-types and the pumping test data shows similar small-scale heterogeneities of the hydraulic conductivity, superimposing large-scale trends. High-permeability BM/OW couples and their dependence on recognizable discharge types in the sedimentary deposits explain sharp-bounded small-scale heterogeneities in the hydraulic conductivity distribution from 9.1 × 10⁻³ to 2.2 × 10⁻⁴ m/s. It is also shown that high values of hydraulic conductivity can be interpolated on shorter distance compared to lower values. While the results of the HF-analysis can be transferred to other fluvioglacial settings (e.g. braided rivers), regional trends must be examined with respect to the surrounding topography.

河流冰川含水层中地下水利用的有利总体条件受到水力传导率明显异质性的影响，这与小规模的相变有关。通过沉积学分析获得与水力有关的水相类型（HF型）的空间分布的知识，有助于确定水力传导率的分布，从而有助于理解河床含水层的水力动力学。特别是，在BM / OW联轴器中出现的HF型“开放式框架砾石（OW）”与HF型“双峰砾石（BM）”同时具有很高的导水率，并极大地影响了水文地质方面的挑战，例如规划开挖坑排水或羽流的预后。本研究通过分析慕尼黑砾石平原（德国南部）的12个砾石坑作为冲刷平原的类似物，调查了区域性河流冰川沉积物中HF型的性质和空间分布，以得出HF型的空间分布趋势。将结果与542次抽水试验的重新评估进行比较。对HF类型和泵送测试数据的分析显示出类似的小范围的水力传导率异质性，叠加了大范围的趋势。高渗透率BM / OW对及其对沉积物中可识别排放类型的依赖性解释了9.1×10的水力传导率分布中的小范围非均质性尖峰 通过分析慕尼黑砾石平原（德国南部）中的12个砾石坑作为类似的冲积平原。将结果与542次抽水试验的重新评估进行比较。对HF类型和泵送测试数据的分析显示出相似的小范围的水力传导率异质性，叠加了大范围的趋势。高渗透率BM / OW对及其对沉积物中可识别排放类型的依赖性解释了9.1×10的水力传导率分布中的小范围非均质性尖峰 通过分析慕尼黑砾石平原（德国南部）中的12个砾石坑作为类似的冲积平原。将结果与542次抽水试验的重新评估进行比较。对HF类型和泵送测试数据的分析显示出类似的小范围的水力传导率异质性，叠加了大范围的趋势。高渗透率BM / OW对及其对沉积物中可识别排放类型的依赖性解释了9.1×10的水力传导率分布中的小范围非均质性尖峰^-3至2.2×10 ^-4  m / s。还表明，与较低的值相比，可以在较短的距离上插入较高的水力传导率值。尽管可以将高频分析的结果转移到其他河流冰河环境（例如，辫状河流），但必须针对周围地形检查区域趋势。