Hydrology Banner

Victoria Falls/Big Tree

The Kariba Lake is designed to operate between levels 475.50m and 488.50m (with 0.70m freeboard) for hydropower generation.

The Lake level has been rising due to increase in Local rainfall activity, flows in the immediate streams and mainstream Zambezi River, closing the period under review at 476.83m (9.18% usable storage) on 15th February 2023, compared to 478.85m (23.47% usable storage) recorded on the same date last year.

The Zambezi River flows at Victoria Falls are steadily increasing, as the rain season progresses, closing the period under review at 1,323m3/s on 15th February 2023. The flow observed on the same date last year was 986m3/s.

DateFlow (m3/s)(2022/23)Flow (m3/s)(2021/22)
2 February928877
3 February952899
4 February978920
5 February1,006942
6 February1,022968
7 February1,039958
8 February1,054962
9 February1,072965
10 February1,111967
11 February1,140970
12 February1,179978
13 February1,218980
14 February1,264984
15 February1,323986
From: 
Thursday, February 2, 2023
To: 
Wednesday, February 15, 2023
Lake Levels Graphic: 
Vic-Falls

Chavuma

The Zambezi River flows at Chavuma are in recession, closing the period under review at 153m3/s as of 24th August 2026, whilst last year on the same date it was at 148m3/s.

From:
11 August 2026
To:
24 August 2026
DateFlow (m3/s)(2025/26)Flow (m3/s)(2024/25)
11-Aug183183
12-Aug181180
13-Aug177176
14-Aug175173
15-Aug173170
16-Aug171168
17-Aug169165
18-Aug166163
19-Aug164160
20-Aug162158
21-Aug160154
22-Aug157152
23-Aug155151
24-Aug153148

Ngonye

Flows at Ngonye are steadily decreasing, closing the period under review at 535m3/s as of 17th August 2026. The flow recorded last year on the same date was at 487m3/s.

From:
4 August 2026
To:
17 August 2026
DateFlow (m3/s)(2025/26)Flow (m3/s)(2024/25)
4-Aug649599
5-Aug635590
6-Aug631577
7-Aug618570
8-Aug609555
9-Aug600545
10-Aug590539
11-Aug577532
12-Aug569527
13-Aug566516
14-Aug557510
15-Aug548500
16-Aug539494
17-Aug535487

Victoria Falls (Nana’s Farm Station)

The Zambezi River flows at Victoria Falls – Nana’s Farm Station are steadily decreasing, closing the period under review at 564m3/s as of 17th August 2026.  The flow observed on the same date last year was at 513m3/s.

From:
4 August 2026
To:
17 August 2026
DateFlow (m3/s)(2025/26)Flow (m3/s)(2024/25)
4-Aug703665
5-Aug691648
6-Aug674626
7-Aug661616
8-Aug641606
9-Aug631594
10-Aug624581
11-Aug613570
12-Aug601562
13-Aug590550
14-Aug582540
15-Aug578530
16-Aug570519
17-Aug564513