Data quality deterioration in the Lake Tana Sub-basin, Ethiopia: scoping study to provide streamflow and water withdrawal data

Abstract

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Priority Research Topics to Improve Streamflow Data Availability in Data-Scarce Countries: The Case for Ethiopia

“…Worqlul et al [48] used old streamflow data from surrounding catchments to parametrize a hydrologic model in the Robit and Dangishta catchments of the upper Blue Nile basin. Moreover, unreliable streamflow data was observed in the low flow of the Gilgel Abay river after 2006, which jumped from the long-term average by about 200% [32,50,51].…”

“…The impetus for this review is the increasing number of studies that reported existing problems of streamflow monitoring in Ethiopia and called for action [32][33][34]. We also hypothesize that hydrological services in African counties would greatly benefit from the findings of studies that address priority research questions in streamflow monitoring and, hence, the need to identify them for the region.…”

“…As a result, recent data collection is relying on individual research project activities [29,30]. For instance, Haile et al [31] and Taye et al [32] demonstrated how reversing the unavailability of streamflow data in the Lake Tana sub-basin of Ethiopia is possible through supporting data providers.…”