Hydrology Banner

River Flows

The hydrometric network used for the control and day to day operations of the Kariba reservoir comprise of thirteen stations where water levels are monitored daily. Flow measurements are carried out at eight of these stations which include the Victoria Falls, one of the key stations on the Zambezi River. Coincidentally, the maximum flow recorded at Victoria Falls was during the early construction phase of Kariba Dam in March 1958 at 10,000 cubic metres per second.  The lowest flows recorded to date at Victoria Falls were during the 1995/96 season which had an annual mean flow of 390 cubic metres per second, whereas the Long Term Mean Annual flow at Victoria Falls is 1,100 cubic metres per second.

FLOWS AT SELECTED STATIONS:

Chavuma

Zambezi River flows at Chavuma are in recession. However, there is a data gap since 4th July 2020 due to a knocked-down gauge plate by water current (process to undertake maintenance works mission is underway). Since then, extrapolated estimates are adopted as a gap-fill measure, closing the period under review at an estimated 308m3/s on 16th July 2020, while the flow recorded last year on the same date was 110m3/s.

From:
3 July 2020
To:
16 July 2020
DateFlow (m3/s) 2020Flow (m3/s) 2019
3/7/2020357129
4/7/2020351128
5/7/2020346127
6/7/2020341126
7/7/2020337124
8/7/2020331121
9/7/2020329120
10/7/2020326119
11/7/2020323117
12/7/2020321114
13/7/2020318114
14/7/2020315113
15/7/2020312112
16/7/2020308110
chavuma

Nana's Farm

The Zambezi River flows at Nana’s Farm, located some 33km upstream of Victoria Falls, are in recession, closing the period under review at 1,099 m3/s on 16th July 2020. The flow observed on the same date last year was 379m3/s.

From:
3 July 2020
To:
16 July 2020
DateFlow (m3/s) 2020Flow (m3/s) 2019
3/7/20201462438
4/7/20201436435
5/7/20201403427
6/7/20201374423
7/7/20201345421
8/7/20201319415
9/7/20201280409
10/7/20201264404
11/7/20201234402
12/7/20201202398
13/7/20201179392
14/7/20201155390
15/7/20201126384
16/7/20201099379
nana

Ngonye

Flows at Ngonye are in recession, closing the period under review at 936 m3/s on 16th July 2020, while last year’s flow on the same date was much lower, at 362m3/s

From:
3 July 2020
To:
16 July 2020
DateFlow (m3/s) 2020Flow (m3/s) 2019
3/7/20201183414
4/7/20201160411
5/7/20201140407
6/7/20201119402
7/7/20201104398
8/7/20201082393
9/7/20201054388
10/7/20201047385
11/7/20201028384
12/7/20201000375
13/7/2020988374
14/7/2020968369
15/7/2020949364
16/7/2020936362
ngonye

Victoria Falls/Big Tree

The Zambezi River flows at Victoria Falls are in recession, closing the period under review at 1,099 m3/s on 16th July 2020. The flow observed on the same date last year was 585m3/s.

From:
3 July 2020
To:
16 July 2020
DateFlow (m3/s) 2020Flow (m3/s) 2019
3/7/20201462719
4/7/20201436705
5/7/20201403698
6/7/20201374691
7/7/20201345677
8/7/20201319663
9/7/20201280650
10/7/20201264636
11/7/20201234630
12/7/20201202623
13/7/20201179610
14/7/20201155604
15/7/20201126598
16/7/20201099585
vic-falls