Watershed morphometric assessment is about measurements and calculations of land surface forms for the purpose of understanding hydro-geomorphological character and patterns. Important natural environment geo-information and summary of the spatial characteristics of Tana River Basin (TRB) in Kenya have been obtained through hydro-geomorphometric analysis. Advanced Spaceborne Thermal Emission and Reflection Radiometer Digital Elevation Model (ASTERDEM) data and ArcGIS (ESRI Inc., version 10.4.1) together with published mathematical equations were applied to extract morphometric parameters of the drainage basin, which covers a total area of 94,930 km² and a span of 527.75 km. The quantitative morphometric analysis considered a total of 28 relief, areal, and linear hydro-morphometric characteristics of the TRB. Relief parameters of the basin suggest moderate-to-low overall watershed steepness, upland with rolling land surface patterns, rugged landforms susceptible to erosion and sediment transportation, and a landscape in evolution process tending towards maturity. This means stability of the land surface can be attained with intensive land degradation reversing strategies like erosion control measures. Areal characteristics further support the basin’s susceptibility to erosion as shown by stream length, stream drainage density, and circulatory ratio values. Also, the areal aspects portray peak runoffs with short duration flashes. Linear parameter value results such as bifurcation ratio imply that infiltration capacity varies with stream orders across the watershed. This hydro-geomorphometric analysis would be useful to land and water managers, researchers and practitioners of TRB, and other similar systems in designing and planning soil and water conservation and management practices such as soil erosion control, groundwater recharge activities, catchment modelling, runoff and flood studies, prospecting groundwater mapping, and biological applications.

流域形态计量学评估是关于对地表形态的测量和计算，目的是了解水文地貌特征和模式。通过水文地貌分析获得了肯尼亚重要的自然环境地理信息和塔纳河流域（TRB）的空间特征摘要。先进的星载热发射和反射辐射计数字高程模型（ASTERDEM）数据和ArcGIS（ESRI Inc.，版本10.4.1）以及已发布的数学方程式一起用于提取流域的形态参数，该流域的总面积为94,930 km ²跨度为527.75公里。定量形态计量分析考虑了TRB的总共28个浮雕，面积和线性水形态特征。该盆地的浮雕参数表明，总体流域陡度为中等至较低，高地具有滚动的地表格局，易受侵蚀和泥沙输送的崎land地形，以及演化过程中趋于成熟的景观。这意味着可以通过强化土地退化逆转策略（例如侵蚀控制措施）来实现土地表面的稳定性。地域特征进一步支持流域的侵蚀敏感性，如流长，流排水密度和循环比值所示。同样，面积方面描绘了短时闪烁的峰值径流。诸如分叉比之类的线性参数值结果表明，渗透能力随流域内的水流次序而变化。这种水文地貌分析将对土地和水的管理者，TRB的研究人员和实践者以及其他类似系统在设计和规划水土保持和管理实践（例如土壤侵蚀控制，地下水补给活动，集水区模型，径流和径流）方面有用。洪水研究，地下水勘测和生物应用。