The composition and distribution of macro-invertebrates of benthic species can be influenced by water quality. The primary objective of this study was to understand the spatial distribution and composition of macro-invertebrates of benthic nature in the upper Awash River below and above Ginchi Town. The study was carried out for a period of three months from February 2020 to April 2020, and macro-invertebrates samples were collected from three stations using Surber sampler with 500 \(\upmu\)m/mesh size and 25 cm × 25 cm (0.0625 m²) of sampling area coverage. The present study showed that, in the study area, there was a low density of macro-invertebrates and species richness in general with a comparative difference between the pool riffle habitats in density and family richness. And the total abundance of benthic macro-invertebrates showed a positive correlation with NO₃-N, dissolved oxygen, and total phosphorus, while a negative correlation with all the other physicochemical parameters measured during the study period. Spatial and monthly variations in the diversity and richness of benthic macro-invertebrates were attributed to the effects of human action and changes in environmental factors. So, the water shade management system should be applied to control pollution factors that can affect the macro-benthic fauna community.

底栖物种的宏无脊椎动物的组成和分布会受到水质的影响。本研究的主要目的是了解银地镇下方和上方阿瓦什河上游底栖自然宏非脊椎动物的空间分布和组成。该研究从 2020 年 2 月到 2020 年 4 月进行了为期三个月，使用尺寸为 500 \（\upmu\）m/目、采样区域覆盖范围为 25 cm × 25 cm （0.0625 m²） 的 Surber 采样器从三个站点收集了宏无脊椎动物样本。目前的研究表明，在研究区域，宏无脊椎动物的密度和物种丰富度总体较低，池状无脊椎动物栖息地在密度和科丰富度方面存在比较差异。底栖宏无脊椎动物的总丰度与 NO_3-N、溶解氧和总磷呈正相关，而与研究期间测量的所有其他物理化学参数呈负相关。底栖宏无脊椎动物的多样性和丰富度的空间和月度变化归因于人类活动和环境因素的变化。因此，应应用水阴管理系统来控制可能影响宏底栖动物群落的污染因素。