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 have been decreasing with a record of isolated rise due to rainfall activity being recorded on the catchment, closing the period under review at 960 m3/s on 17th May 2021. The flow recorded last year on the same date was 991 m3/s.

From:
4 May 2021
To:
17 May 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
4/5/20211,1851,624
5/5/20211,1881,551
6/5/20211,1931,480
7/5/20211,1971,406
8/5/20211,1931,346
9/5/20211,1721,294
10/5/20211,1501,242
11/5/20211,1191,200
12/5/20211,0941,158
13/5/20211,0611,117
14/5/20211,0341,083
15/5/20211,0111,047
16/5/20219861,022
17/5/2021960991
chavuma

Nana's Farm

The Zambezi River flows at Nana’s Farm, located some 33km upstream of Victoria Falls, which have been increasing due to second wave of incoming inflows from the upper Kariba catchment, have started decreasing and closing the period under review at 2,851m3/s on 17th May 2021. The flow observed on the same date last year was 4,000 m3/s.

From:
4 May 2021
To:
17 May 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
4/5/20212,7574,451
5/5/20212,7694,453
6/5/20212,7924,410
7/5/20212,8114,393
8/5/20212,8304,374
9/5/20212,8464,333
10/5/20212,8704,303
11/5/20212,8794,244
12/5/20212,8814,211
13/5/20212,8774,195
14/5/20212,8794,163
15/5/20212,8744,117
16/5/20212,8634,066
17/5/20212,8514,000
nana

Ngonye

Flows at Ngonye are decreasing closing the period under review at 2,371 m3/s as of 17th May 2021, while last year’s flow on the same date was 3,127 m3/s.

From:
4 May 2021
To:
17 May 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
4/5/20212,9364,150
5/5/20212,9194,082
6/5/20212,8854,009
7/5/20212,8423,913
8/5/20212,8013,831
9/5/20212,7633,736
10/5/20212,7183,673
11/5/20212,6643,598
12/5/20212,6123,521
13/5/20212,5593,436
14/5/20212,5133,357
15/5/20212,4623,282
16/5/20212,4053,207
17/5/20212,3713,127
ngonye

Victoria Falls/Big Tree

The Zambezi River flows at Victoria Falls which have been increasing due to second wave of incoming inflows from the upper Kariba catchment, have started decreasing and closing the period under review at 2,851m3/s on 17th May 2021. The flow observed on the same date last year was 4,375m3/s.

From:
4 May 2021
To:
17 May 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
4/5/20212,7574,532
5/5/20212,7694,532
6/5/20212,7924,462
7/5/20212,8164,444
8/5/20212,8304,427
9/5/20212,8464,392
10/5/20212,8704,375
11/5/20212,8794,306
12/5/20212,8814,255
13/5/20212,8774,238
14/5/20212,8794,221
15/5/20212,8744,153
16/5/20212,8634,066
17/5/20212,8514,000
vic-falls