RAINFALL AND DISCHARGE OF THE RIVER MURRAY, LXIII. 
S = Second feet per square mile. 
Ml Du ee 
ihen=s>— 31°536 x 8300 ~ 5617483 = Dx X *00000382 
Example for Year 1890. 
D = 181,462,000,000 
Dy — [81462 
Then I 181462 x °00005186 = 9°41 
Then S = Dy °00000382 = 181462 x °00000382 = 0°69 
ANNUAL DISCHARGE, RAINFALL AND RUN-OFF OF MUR- 
RUMBIDGEE CATCHMENT AT GUNDAGAT. 
aoe ? Annual : jou ‘ Run-oft. 
ar | inches over | Gundacni i Rae Ree Second Depth in | Percentage 
Year. |hole ontch-| Gundneai in| Gundagat in| Second | Deptt in | discharged. 
| Gundagai. cubic feet. | perannum. (square mile] catchment, 
1890 | 33:93 181,462 | 4,165,794 0 69 9-41 28 
1891 | 37°95 256,486 5,888,134 0-98 13°30 30 
1892 | 30°44, 165,826 3,806,839 0°63 8°60 29 
1893 | 33°42 156,231 3,586,543 9°60 8°10 25 
1894 | 39°86 270.887 6,218,703 1°03 14°05 30 
1895 20°73 101,347 | 2,326,598 0°39 5°26 25 
1896 25°06 74.956 1,720,702 0:29 3°89 15 
S87 | 25°90 87,783 2,015,236 0 34 4°56 17 
1898 | 22°49 83,515 2,032,033 O34 4°59 Zilt 
1899 25°37 100.979 2,318,148 0°39 a 24 21 
1900 | 34°71 ef bss VOLT 4,078,897 0°68 SoS) 26 
1901 | 25°69 86,475 1,985,156 0°33 4°48 Ie 
1902 17°76 17°421 399.929 0:07 0°90 5 
1903 | 29 76 71,667 1,645,304 0:27 3°72 12 
1904 | 25/51 66,708 1,531,392 0:25 3°46 13 
Mean: 286 126,928 | 2,914,627 0:49 6°58 21:6 
The diagram, Appendix *‘H,’’ has been plotted from the 
tabulated figures given in the foregoing statement and 
covers a period of 15 years, viz., from 1890 to 1904. The 
greatest annual precipitation during this period occurred 
in 1894, when 39°86 inches of rain was recorded and the 
run-off reached its highest point, viz., 35% of the rainfall. 
This run-off, if spread over the catchment area, would 
represent a depth of 14°05 inches, and the mean rate of flow 
would be 1°03 second feet per square mile of catchment. 
The total gauged discharge at Gundagai for the year 1894 
