The water balance of Lake Kyoga, Uganda

Figures & data

Fig. 1 Map of the East African lake region (after Sutcliffe and Parks 1999).

Fig. 2 Lake Kyoga region, including runoff stations and raingauges.

Fig. 3 Gaugings at Kamdini, Fajao and Paraa, 1940–1979 (after Sutcliffe and Parks 1999).

Fig. 4 Gaugings at Masindi Port, Kamdini, Fajao and Paraa, 1922–1978.

Fig. 5 Differences between annual flows at Masindi Port and at Kamdini, 1940–1977.

Table 1 Selected runoff stations in Kyoga basin

WDD no.	River	Area (km^2)	Lat. °N	Long. °E	Years of record	No. of years	Mean runoff
							(m^3×10^6)	(mm)
822/17	Mpologoma	3390	0 50	33 47	1949–1980	25	616	182
822/18	Malaba	1458	0 35	34 03	1956–1980	15	477	327
822/28	Namalu	175	1 47	34 35	1959–1976	11	11.9	67.7
822/40	Siroko	265	1 14	34 15	1953–1983	18	156	587
822/41	Simu	165	1 18	34 17	1953–1984	21	120	724

Fig. 6 (a) Basin annual average rainfall, 1902–1985; (b) number of stations used; (c) standard error of estimate; and (d) comparisons of monthly rainfall averages pre- and post-1961.

Fig. 7 Annual runoff from selected stations (see Table 1 for WDD nos) and basin rainfall.

Fig. 8 Lake Kyoga: Kamdini outflow + lake storage change vs Jinja inflow, 1940–1977.

Fig. 9 Lake Kyoga: outflow–inflow + lake storage change vs basin rainfall, 1940–1977.

Table 2 Lake Kyoga water balance, 1940–1977

Component	Volume (km^3)
Jinja inflow	28.54
Kamdini outflow	28.96
Lake rainfall	6.27
Lake evaporation	8.22
Local inflow	2.62

Fig. 10 Lake Kyoga: outflow + lake storage change vs total inflow, 1940–1977.

Fig. 11 Annual flows: Masindi Port + lake storage change and Jinja, 1915–1977.

Fig. 12 Masindi Port: published and estimated annual flows, 1915–1939.