Table 1 Estimated hydraulic time constant τ and Total Drainable Water Storage (TDWS) S0 over Congo and its sub-basins.

From: Current availability and distribution of Congo Basin’s freshwater resources

  

DWSA

TWSA

Basin

Area [km2]

τd [month]

\({S}_{0}^{{{{{{{{\rm{d}}}}}}}}}\) [mm]

\({S}_{0}^{{{{{{{{\rm{d}}}}}}}}}\times\)Area [km3]

τt [month]

\({S}_{0}^{{{{{{{{\rm{t}}}}}}}}}\) [mm]

\({S}_{0}^{{{{{{{{\rm{t}}}}}}}}}\times\) Area [km3]

Kasaï

895 633

9.3 ± 0.2

250 ± 5

220 ± 4

10.1 ± 0.8

255 ± 20

228 ± 18

Middle Congo

879 050

2.6 ± 0.2

103 ± 7

90 ± 6

2.6 ± 0.2

103 ± 7

90 ± 6

Ubangui

649 495

8.6 ± 0.8

97 ± 8

63 ± 5

8.6 ± 0.8

97 ± 8

63 ± 5

Sangha

213 654

5.7 ± 0.5

95 ± 9

20 ± 2

5.7 ± 0.5

95 ± 9

20 ± 2

Lualaba-North

250 975

1.7 ± 0.3

89 ± 11

22 ± 3

1.7 ± 0.3

89 ± 11

22 ± 3

Lualaba-South

454 093

7.7 ± 0.2

149 ± 4

67 ± 2

13.9 ± 0.9

235 ± 12

107 ± 5

Lualaba-Lukuga

267 108

105.8 ± 3.0

88 ± 4

20 ± 1

174.2 ± 4.7

148 ± 3

40 ± 1

Weighted average

∑ 503 ± 10

  

∑ 571 ± 20

Congo

3 615 546

4.3 ± 0.1

133 ± 3

476 ± 10

4.4 ± 0.2

139 ± 6

502 ± 22

  1. Results are shown for both cases, when the Drainable Water Storage Anomaly (DWSA) and Total Water Storage Anomaly (TWSA) are considered. The different estimates between the two cases, over the Kasaï, Lualaba-South, Lualaba-Lukuga, and the entire Congo Basin are highlighted in bold.