Todzie River

Todzie is a stream in Ghana that forms part of the border with south-west Togo. The terrain elevation above sea level is estimated to be 5 meters. Todzie can also be spelled Todjé, Todje, Toji, Todie, or Todzie in other languages.

The Todzie River's annual runoff is highly variable. The minimum annual runoff (1958) was 79 x 106 m3, while the maximum was 587 x 106 m3 from 1957 to 1968. (1963). The average for the time period was 345 x 106 m3. The catchment area of the Todzie River is 2200 km2. The area commanded by the gauging stations Todzienu and Tove, on the other hand, is slightly smaller and totals 2120 km2. The average annual flow on the Todzie River at Todzienu is estimated to be 11 m3 s-1, with a reliable yield (50-year return period) of about 0.05 m3 s-1. The 100-year flood is estimated to be approximately 140 m3s-1. Given the monthly and annual variability in flow, the Todzie River, as previously reported, could significantly contribute to flooding in the Keta lagoon. When there is no inflow, the estimated capacity of the Keta lagoon is 360 x 106 m3. Figure 7 depicts the average annual flow on the Todzie. Peak flows occur in June and October, as expected, with low flows occurring between November and April. This is low when compared to a mean of 6.6 m3s-1 for November from 1957 to 1968. During the same time period, however, the mean annual flow ranged between 2.5 m3 s-1 and 18.5 m3 s-1. The highest recorded peak flow on the Todzie River was 215 m3 s-1 in 1968. The data were not continuous between 1964 and 1990, but the average discharge for November during that time period was 7.1 m3 s-1.

Length: 267 km (166 mi)