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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

The Zambezi River flows at Chavuma are receding, closing the period under review at 235m3/s as of 28th July 2025, whilst last year on the same date it was much lower at 164m3/s.

From:
15 July 2025
To:
28 July 2025
DateFlow (m3/s)(2024/25)Flow (m3/s)(2023/24)
15-Jul290198
16-Jul286195
17-Jul281192
18-Jul277189
19-Jul272186
20-Jul268183
21-Jul263181
22-Jul258178
23-Jul255176
24-Jul252173
25-Jul248171
26-Jul245169
27-Jul240167
28-Jul235164
chavuma

Ngonye

Flows at Ngonye are receding, closing the period under review at 700m3/s as of 28th July 2025. The flow recorded last year on the same date was lower at 431m3/s.

From:
15 July 2025
To:
28 July 2025
DateFlow (m3/s)(2024/25)Flow (m3/s)(2023/24)
15-Jul973498
16-Jul951490
17-Jul924484
18-Jul896480
19-Jul878473
20-Jul850469
21-Jul828463
22-Jul807454
23-Jul786451
24-Jul761448
25-Jul750440
26-Jul730436
27-Jul715435
28-Jul700431
ngonye

Victoria Falls (Nana’s Farm Station)

The Zambezi River flows at Victoria Falls – Nana’s Farm Station are in recession, closing the period under review at 814m3/s as of 28th July 2025.  The flow observed on the same date last year was lower at 433m3/s.

From:
15 July 2025
To:
28 July 2025
DateFlow (m3/s)(2024/25)Flow (m3/s)(2023/24)
15-Jul1,228493
16-Jul1,195488
17-Jul1,160483
18-Jul1,126476
19-Jul1,097454
20-Jul1,057453
21-Jul1,029451
22-Jul994449
23-Jul963448
24-Jul942446
25-Jul904443
26-Jul873441
27-Jul840437
28-Jul814433
vic-falls