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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 Chavuma have been increasing steadily during the week under review due to isolated rainfall activities on the catchment, closing at 533m3/s on 12th February 2019, while the flow observed last year on the same date was 2,131m3/s.

From:
6 February 2019
To:
12 February 2019
Date Flow(m3/s)
06/02/2019499
07/02/2019513
08/02/2019518
09/02/2019522
10/02/2019542
11/02/2019532
12/02/2019533
chavuma

Nana's Farm

Nana’s Farm Gauge Station is located about 33km upstream of Victoria Falls. The Zambezi River flows at this station have been increasing due to sporadic rainfall activity around the catchment during the period under review, closing the week at 623m3/s on 12th February 2019. The flow observed on the same date last year was 1,020m3/s.

From:
6 February 2019
To:
12 February 2019
Date Flow(m3/s)
06/02/2019579
07/02/2019585
08/02/2019586
09/02/2019609
10/02/2019616
11/02/2019623
12/02/2019623
nana

Ngonye

Flows at Ngonye have been increasing steadily with a record of fluctuation during the week under review, closing the week at 729 m3/s on 12th February 2019, while last year’s flow on the same date was 1,756m3/s.

From:
6 February 2019
To:
12 February 2019
Date Flow(m3/s)
06/02/2019669
07/02/2019692
09/02/2019689
10/02/2019703
11/02/2019710
12/02/2019721
13/02/2019729
ngonye

Victoria Falls/Big Tree

Flows at Victoria Falls decreased with records of fluctuation due to reduction in local and upstream rainfall-runoff on the Upper Zambezi Catchment, closing the week under review at 530m3/s on 12th February 2019. Last year on the same date, the flow was 1,043m3/s.

From:
6 February 2019
To:
12 February 2019
Date Flow(m3/s)
06/02/2019519
07/02/2019513
08/02/2019530
09/02/2019524
10/02/2019519
11/02/2019524
12/02/2019530
Victoria Falls/Big Tree