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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

Zambezi River flows at Chavumapeaked for the second time at 3,460m3/sas of 8th April 2021, due to the influence of head-flood plains discharge before it started decreasing, closing the period under review at 2,283m3/son 15th April 2021. The flow recorded last year on the same date was 4,516,m3/s.

From:
2 April 2021
To:
15 April 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
2002/04/212,1175,450
2003/04/212,4835,573
2004/04/212,9115,715
2005/04/213,1635,805
2006/04/213,3035,825
2007/04/213,3965,803
2008/04/213,4605,772
2009/04/213,4235,726
2010/04/213,2825,598
2011/04/213,0825,417
2012/04/212,8655,209
2013/04/212,6394,954
2014/04/212,4494,726
2015/04/212,2834,516
chavuma

Nana's Farm

The Zambezi River flows at Nana’s Farm, located some 33km upstream of Victoria Falls,have been decreasing due to reduced rainfall activity and inflow from the upper Kariba Catchment, closing the period under review at 2,996m3/s on 15thApril March 2021. The flow observed on the same date last year was 3,782m3/s.

From:
2 April 2021
To:
15 April 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
2002/04/213,2734,101
2003/04/213,2664,019
2004/04/213,2533,966
2005/04/213,2513,942
2006/04/213,2413,913
2007/04/213,2313,876
2008/04/213,2193,842
2009/04/213,1673,801
2010/04/213,1383,736
2011/04/213,0993,715
2012/04/213,0773,715
2013/04/213,0533,743
2014/04/213,0243,756
2015/04/212,9963,782
nana

Ngonye

Flows at Ngonye have been decreasing due to reduced rainfall activity and inflow from the Barotse flood plains, closing the period under review at 2,650m3/sas of15thApril 2021, while last year’s flow on the same date was4,226m3/s.

From:
2 April 2021
To:
15 April 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
2002/04/213,0363,847
2003/04/212,9893,815
2004/04/212,9413,786
2005/04/212,9193,786
2006/04/212,8803,791
2007/04/212,8543,828
2008/04/212,8253,873
2009/04/212,7923,918
2010/04/212,7633,966
2011/04/212,7354,009
2012/04/212,7044,063
2013/04/212,6804,114
2014/04/212,6644,182
2015/04/212,6504,226
ngonye

Victoria Falls/Big Tree

The Zambezi River flows at Victoria Falls have been decreasing due to reduced rainfall activity and inflow from the upper Kariba Catchment, closing the period under review at 3,006m3/s on 15thApril 2021.The flow observed on the same date last year was3,793m3/s.

From:
2 April 2021
To:
15 April 2021
DateFlow (m3/s) 2020/21Flow (m3/s) 2019/20
2002/04/213,2734,153
2003/04/213,2664,086
2004/04/213,2534,020
2005/04/213,2513,954
2006/04/213,2413,922
2007/04/213,2313,890
2008/04/213,2193,857
2009/04/213,1673,825
2010/04/213,1383,762
2011/04/213,0993,730
2012/04/213,0773,699
2013/04/213,0533,683
2014/04/213,0243,730
2015/04/213,0063,793
vic-falls