Hourly, Daily and monthly temperature data were used to assess the daily solar pump operation for the duration of two years. These data were also used to assess the size of three systems in Kirua kahe water supply scheme for rural areas. Economic analysis were conducted from designed three different systems and compared with existing ones.

These monthly mean temperature data were collected from the Ilongo station at Great Ruaha river basin in Iringa. The data were collected from 1990 to 2018 by Tanzania Meteorological Agency.

These daily stream flow data were collected from the Igawa station, Kimani river, Great Ruaha river basin in Iringa, Tanzania. The data were collected from 1950 to 2020 by Tanzania Meteorological Agency.

These hydrological mean daily streamflow data were collected from the Igawa station at the Mbarali river, Great Ruaha river basin, Iringa, Tanzania. The data were collected from 1960 to 2019 by Tanzania Meteorological Agency and Rufiji Basin Water office.

These daily mean temperature data were collected from the Msembe station at Great Ruaha river basin in Iringa. The data were collected from 1990 to 2018 by Tanzania Meteorological Agency.

These monthly precipitation data were collected from the Great Ruaha river basin in Iringa, Tanzania. The data were collected from 1990 to 2018 by Tanzania Meteorological Agency.