10 Hydrology and Climate Impacts on Streamflow and Sediment …
227
0
20
40
60
80
100
120
JAN FEB MAR APR MAY JUN JUL AUG SEPT OCT NOV DEC
Monthly River Discharges (m 3
/s)
Months
MIN
AVERAGE
MAX
Fig. 5 Mean monthly river discharge in the Nyando River Basin at RGS 1GD4
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0
500
1000
1500
2000
2500
1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
Annual River Discharge (m 3
/day)
Total Annual Rainfall (mm)
Years
Total rainfall (mm)
Total rainfall (mm)
Annual Discharge (m3/day)
Fig. 6 Annual river discharge and total annual rainfall in the Nyando River Basin at Koru and
Lumbwa Rainfall stations
in the Nandi Hills, and gradually decreases in the southeastern direction, bringing
variations in discharge.
227
0
20
40
60
80
100
120
JAN FEB MAR APR MAY JUN JUL AUG SEPT OCT NOV DEC
Monthly River Discharges (m 3
/s)
Months
MIN
AVERAGE
MAX
Fig. 5 Mean monthly river discharge in the Nyando River Basin at RGS 1GD4
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0
500
1000
1500
2000
2500
1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
Annual River Discharge (m 3
/day)
Total Annual Rainfall (mm)
Years
Total rainfall (mm)
Total rainfall (mm)
Annual Discharge (m3/day)
Fig. 6 Annual river discharge and total annual rainfall in the Nyando River Basin at Koru and
Lumbwa Rainfall stations
in the Nandi Hills, and gradually decreases in the southeastern direction, bringing
variations in discharge.