Accuracy of KU-STIV for discharge measurement in Ghana, Africa

2017

English

Kobe University provided a training program in Japan within a SATREPS project to three Ghanaian hydrologists on discharge measurement by using an image analysis software KU-STIV, developed at Kobe University for flow measurement. Then, three delegates from the Kobe University, Japan visited Ghana to actually measure stream flows at three rivers stations on the Densu River basin in Ghana. The flow measurements are carried out by using two techniques, KU-STIV and Vale-port current meter. The measured discharges were very small, less than or equal to 1m3/s. The maximum relative measurement error between the two methods is roughly about twenty percent so that it is acceptable considering the measurement condition at the site. The paper briefly summarizes the usefulness of discharge measurement by an image analysis technique to avoid the risks of field measurements in African regions.

Fujita, I.; Kobayashi, K.; Logah, F. Y.; Oblim, F. T.; Alfa, B.; Tateguchi, S.; Kankam-Yeboah, K.; Appiah, G.; Asante-Sasu, C. K.; Kawasaki, R.