BILATE RIVER BASIN DEVELOPMENT STUDY
PRELIMINARY REPDRT
VOLUME II HYDRO-METEOROLOGICAL DATA
>
D. Jovanovic civ. eng. Teclegiorgis Goitom civ. eng.
National Water Resources Commission Executive Organ
Addis Ababa
July 1974Introduction
The         available         hydrometeorological         data         fronTStaCrons         within tne Bilate River Basin as well as from some stations in the
neighbouring basins are compiled in tnis volume. There are seven meteorological stations within tne Bilate River catch ment with classes varying from two to four. There is no single 1st class station in the Bilate drainage basin. The summary of the-nneteorological stations ia shown in tne table
on    page    two. as follows:
Classification of meteorological stations is
1st Class: Maximum and Minimum thermometers, dry and wet bulb thermometers, thermometer on barometer, thermograph a..d hydrograph, intensity and standard ram- auges, aneroid 
o
barometer, solar thermometer Diack tank, solar tnermometer
silver tank and ground thermometer, evaporation pan and anemometer, sunshine recorder, wind and cloud observation 
and water temperature.
2nd Class: Maximum and Minimum thermometers, dry and wet-bul thermometers, evaporation pan and anemometers intensity and standard rain-gauges.
3rd Class: Maximum and Minimum thermometers and. standard 
raingauge.
4th Class: Standard rain-gauge.
g f
* / \
.
There are only two hydrological stations in the Bilate River Basin one is at Shashemene Soddo bridge, while dire other is at the Bilatentena Bridge. The Alaba Colito Station has an automatic water level recorder and a cableway, where flow measurements have been conducted for three years only (as shown in the table on page 41). The station at Bilatentena has only a staff gauge.
Detailed proposal for improving the hydrometeorological network in the Bilate catchment will be given in the next stage of the study.
(I)l*t*r*a'.oeol BevOor/. . _
—
Ht«retoglco<  Sio'ien
.
fl
U«oo>*i>»«icol Blotto*
.SUMMARY OF METEOROLOGICAL GAUGING STATIONS
2
i
ST.
N«
NAME OF STATION
TYPE OF
STATION
(Class)
r
DURATION OF ,
RECORD                  OPERATING
r
ELEVATION (
A S 1       1GEOGRAPHICAL
DESCRIPTION OF
STATION
DISTANCE OF STATION
FROM NEARBY TOWN
REMARKS
ORGANIZATION            (m)               LOCATION               LOCATION              OR VILLAGE
I
1
(a) HOSSAINA -A-
(b) HOSSAINA            -A-
C. A. A                      2290
1
2 (a) ALABA COLITO
(b) ALABA COLITO
NWRC
CAA
N W R C.
------- |
1850
(
07*32’ N
37° 50' E
07° 32' N
37*51' E
07*22' N
38*06’ E
1
____ I
3
4
5
BILATE AGR ESTATEZA
SHONE A-
BILATEN TENA
DATE OF
INSTALLATION
Mor. 1, 1953
Feb 5, 1972
Jan       1966
Mar 6, 1973
Mar 1971
Feb 7, 1973
Jan 29,1973
Feb l, 1965
Feb 1,1965
Jul 1, 1971
Apr 1, 1954
—
Dec 6,1969
Jon 29,1973
CAA —
N W R C 1 --------
NWRC
6
ABONSA                         A-
7         SAKI                                A-
8        ABELA
*
I
9          (a) WOLLAMO      SODO * lb) WOLLAMO       SODO *
____
3 rd
3 rd
3 rd
gnd
3 rd
4 th
4 th
3 rd
3 rd
3 rd
3-
xrd
4th
-~
Evap. Pan 8
Raingauge
.
2000
1
1
1500
i540
2060
07*22' N
38*06' E
06*41' N
38*01' E
07*20' N
37*57' E
06*58' N
38*09' E
07*08' N
37*59' E
06*53' N
38*00' E
06*42' N
37*56' E
06*52' N
37*44' E
4 th
4 th
3 rd
gnd
(Years)
16
(1953-1968)
2
(1972-1973)
7
(1966-1972)
(1973)
1
(1972)
1
(1973)
(1973)
_ ----------------- .
9
(1965-1973)
9
(1965-1973)
3
(1971-1973)
14
(1954-1972)
3
(1970—1972)
1
(1973)
-
1
(1973)
1
(1972)
2
(1972-1973)
6
(1966-1971)
2
(1972-1973)
CAA
CAA
CAA
CAA
N W R C 2050 , 06*52' N
3^*44 E
06*56' N
10        YIRBA
*
j
II
12
13
14
WEST AWASSA             *
1 _____
AJE
WULBAREGH
-M-
*
1
Moy 30,1973
Feb. 17, 1972
Feb. 3,1972
Jan.1,1966
Jan.1,1972
NWRC
NWRC
NWRC
NW R C
AAR
AAR
38*17' E
07*10' N
38*26' E
07*15' N
38*21' E
07*42’ N
38*12' E
07*03' N
38*29' E
07*03' N
At the
S1M
At the Kembara
Synod Mission
At the
S1M
At the
S.l M
At the Bilate
Agr. Estate
At the
Police Station
At the
Police Station
In the
Adventist Mission
In the
Adventist Mission
At the
NCD
At tne
S.l M
At the
Police Station
At the
Police Station
1
At Eshetu's
Farm
At the
Police Station
245Kms. from Addis Ababa
235 Kms. from Addis Ababa
3l5Kms. from Addis Ababa i
315 Kms. from Addis Ababa
50 Kms from Soddo
25Kms from Alaba Colito
68Kms. from Awassa
30 Kms from Alaba Colito !
l5Kms from Bodlti
30 Kms. from Alabo Colito
390Kms from Aadis Ababa
39OKms from Addis Ababa
40Kms  from  Awassa
|
ISKms from Awassa
33 Kms from Shashamene
1
1
On the way to , Alaba Colito
On the way to Hossaino
(a) AWASSA *
(b) AWASSA *
1760
|
At Furfuru River
Bridge
At the
AAR
At the
AAR
57Kms. from Butojlra
227Kms from Addis Abot
— ___  - -
|227Kms.from Addis Abab a
1
|      38*29' E
■LEfiENP
A- = Stations inside Bilate Basin
*         = Stations outside Bilate Basin
C A A .   = Civil Aviation Administration
N C D. = National Community Development
LEGEND
N.W.R C.=         Notional Water Resources                 Commission AAR              =        Awassa Agricultural Research
SIM               =             Sudan Interior MissionRift Valley Lakes Basin Station hossaIha (S J, mj
Lot N. ^XL72_32‘
RAINFALL DATA (mm)
Elevation 2290— Long. E. _ S7° 50
Province SHOA
Year
Jan
Feb
Mar
Apr
May
June
Aug
Sept
Oct
Nov
Dec
7 otui
Remar
1953
1954
1955
1956
1957
1958
1959
-
28
127 3
30 1
15 5
67.4
56.0
—
17. 1
l.l
16.0
25 3
50.2
104.8
1298 5
1472.9
1237 3
I960
1961
1952
16 3
0 ,C
0.0
40 4
1963
1 964
1965
-
10.8
29.0
40.4
7.5
25 2
34.3
35
34 9 105 4 83 9
36.3
183 6
36 3
118.5
280.5
80 0
129.5
40 6
142 2
16-4
297 0
-
76 0
225 5
210 8
-
106.7 75 6
250.2 94 8
199 0
183 2
84 9
115 1
117 7
186 8
134 9
208 5 156. 9 174.7 112  5
187 0
189 4
i62   6
251 5 155 0
79 0
1811
168 9
239 7
258 2
205.2
185 4
126 6
182.6
280 1
210.5
117 2
172 2
170 2
184 3
132 1
115 4 189. 2
228 7
255.2
74 3
128 7
—
222 8
60 0
148 9
115 9
169 0 130 7
74 5 176 0
2.1
33 5
57 8
232.0
46.0
67. 8
104 7
4.3
107 7
36 7
48
84 9 47. 3 59 0
81 5
22 .0
22. 1
10 5
2.6
57
69
—
26 2
60
53.4
64 6
17 1
00
—
00
69 5
42 2
0.3
30 4
29 3
0.1
29.4
58
39. 6
17
35 0
75 5
49 6
—
00
-
1349 4
1098 2
1292 9
1966
1.0
—
72 1
1967
196a
00
15
18 0
68 0
115.0 34 5
274 0 123 5
89 0
96 2
56 2
121.7
107. 1
135.5
—
76.9
249.7
214. 8
72 .9
82 6 114 8
31 7
58 5 158 5
—
182 2
201 3
140 5
142 6
125. 6
—
no. 9 119. 1
113 0
110 8
122.1
169 3
118 8
53 3
110 0 75 34
£k!MAI!£_J2AIA
Station         HOSSAINA       (S.J.M )
Basin KIFT VALLEY
Detoil Ave. Minimum Temperature (Jr. *
Lot N. _972 .32-------------- Long.E. ?7’ 50'
lakes Elevation 2290. It)
°c 
-----------
Year
1
J<m
—
-
8.4
Feb
Mar
Apr
Moy
June
76 9.3
—
8.3 8.1 98
July
7.6 10.0
9.1
Aug
71
9.8 89
Sept
51
93 92
6.7
Oct
Nov
Dec
Tatai
Remarks
i I953
■ I954
I I 95 5
—
8.0
5.5
—
9.1 8.7
88
—
6.1 85
■
1
9.5       84
■-   ■-
11
! I956           6.6         6 .7
8.5
10. 5       7.9
7.2       74
■
I957
76
10.6        10 7      9.4
10.4       10.3       10 7
—
51
6.8
—
5.6
I958         8.3        10.1          9.6         - ,—
-_
—
I 1959
I960
1961 7 9
1962 6 . 9
10. 1
-
12.1
10.0      10. 3       9.9           -
— II.0
—
88
9.7
87
—        11.8       10 1         108          II 5     10 8
38
71
66
■•
65
8.1
79
9.5
9.4
—
9.3
7.8
93
-
89
8.4
84
1 1__
—
7.7
6.2
32
7.9
8 .5
82
II 0
99
9.6
78
9.1
7.6
87
-
67
89
8.6
76
9 .0
76
5.0
-
<
12 .2     10.8
10 8                      H 4
-
II .7         117
r
II 3
1963    i __       9.3
1964        7.7      | 9.1
1965         7 4        6 . 8
1966        7. 1
-
1967       5 . 1         9 3 1966        4 . 6         9.4
II .1
1
II I
9.9
9 .0
11.9
10 9     1 1 0 1 0.0
10 3
10.6
87
11.5  [ 9.5          10 . 1       10 4      10 .3     9 8
10.7      8 1          9.7          —           9 .3       8 8
11.2 195 9.4 II . 1 10. 6 10.4
1 1 .7 10.8 9.9 10.8 10.0 9 . 8
—
Z1
96        -
1—
______ 1______
. .. 1__
L5
.CLIMATIC DAIA_ Station at hossana is i m ) ^0Sin rift valley lakes
Detail Ave Dal,y Temperalure
Elevotion
07°       32*
37°      50' 2290           (m)
°C
Ye a«
I953
I954
I955 I956
I957
I958
I959
, I960
Jar
Feb
Mar
Apr |
- —— n —
uure i July
"L-1     3
Nov
______ i —________       —
£>•'    • Tate
—
I7 4
I6 8
—
18.6
16. 6
18.0
20.0
20 0
—
18.5
18.6
19. 2
19.6
19.5
21 4
—        17. 8      16. 2           5.6      1 5 8 18.8       18.2      16 .9       16.7        15.5 18.3      16.8       16 0       15.4       15.1 18.8      19 .3       18.9      18 .1      18.1
———
16 6      16.0 ---- .
4
17 0 I 1 6. 3
16.4 15 4 16.7
15.6 15 3 14.2
,______„
-
19.8      19 4         2 0.0      19 0
I6. 9
—
—
18.8      17 8              ■
__
19 3        19.0      19 .0      18.5         —          __           —         13. 0       17 4        17 2
—
16.6 15.4
—
14.7        15.4      15.5      1 5 .6       15.6       15.8
I96I         I6. 2
—        15. 7       15.0      13.8          —          —           —           —           —
I962
I963
I9 6 4
I5.4
17 8
L
18.2       16.8      15. 8       15.3        14 9     1 5 4      15 4        15 9       15 2
-        | 16.4         18 4      n~6.4         -            -
-            —         15 4       16.0        16.5       15 .2
I5 6        16 6       17. 3       17 2       16 .0      15.0         14 .3      14 2      14.3      14 8        15. 1       14.3
I9 6 5       I4 8        16 1        17 2        17.0      15.7        —          —          —     | —                  —           —          —
I966 ' I967
—
17. 2        17.4       16.9       15 4       15.7        15 3  ; 15 e         15.6        15 6        14 8
I5 2         17. 8      18.0        17.5       16.4       15 4       14 . 8       14 9      15.0       14 .8       15.1         —
1
I968         I4.8       15. 5       16.8          -       ! -
1
-            —           —     1                   15 3         —            - I6
CLIMATIC DATA
Station at hossaina (s 1 M )
Basin ghibie-omo
Elevation .
Lot N. 070 32' Long E. 37° 50‘
2290 im)
Detail Ave Maximum Temperature Unit °C
t ear
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
To lai
Remar ks
1 954
1955
1956
1957
1958
1959
I960
1961
1962
1963
1964
1965
1966
1967
1968
1969
—
26 5
27 0
—
30.5
28 2
26 5
24 5
24.0
-
23 4
22 1
-
25 2
24 9
-
29 3
27 6
29 3
32 5
29.9
28 5
28 3
—
25.4
23 5
24 5
25 4
—
26.3
21.6
—
28.1
29 7
30 7
2 8.4
33.2
28 6
27 5
—
23 9
25 6
24 7
25.5
24 2
25.3
24.0
-
-
28 1
26 1
27 0
27 9
25.0
19 2
24 6
210
23.0
23.3
23.5
23 3
—
-
27 1
27 9
25 8
29 2
—
27 6
21 4
19 1
22 2
20 6
22 4
23 3
23 0
25 5
24 0
28.0
—
27. 1
20 8
16.7
20 5
20.0
19 9
—
1
1
24 5
22 0
1
21.3
20 9
-
21 3
24 3
23 5
25 8
22 7
25 5
18 6
-
19 4
18 9
18 2
—
20 3
18 7
—
—
21 6
22 2
22 8
25 9
24 3
22 5
19 2
10 9
19 4
18 1
—
20 0
19 8
—
—
23 8
23 7
24 4
28 9
26 7
—
20 2
19 9
20 9
18 9
-
21 3
20 2
L
__
24 9       26 3 24 2       27 2 24 1       25 3 30 7        32 0 27 0           - 23 5        26 4
217         23 0
—
21 6       2 1 9 24 3       23 4 20.3        22 4
—— 22 2        23 5 21 3        21 5 22 2         -
——
27 5
—
—
32 4
27 1
27 7
22 6
22 0
21 5
21 0
—
24 7
—
—
—
1
__ 11
RAINFALL DATA (mm)
Rift Volley Lakes Basin GHIBIE-OMO
Station H0S6A1NA IfcLW.R.C)
Lat. N. _0_7*32*
Elevation ________________ (m)
Long. E.
Province—SJDAMO •
Year
Jan
Feb
Mar
Apr.
May
June
July
Aug.
Sept
Oct
Nov
Dec
Total
Remarks
1972
—
81.1*
65.9
164.9
71.4
138.1
196.3
181.2
152.3
5.6
0.0
18.1
1973
25.5
4.6
0.0
40.7
155.3
1 42.5
152.1
241.5
215.4
64.3
0.0
19.7
1061.6’
1974
16.1
24.2
137.1
2 2.4
139.8
80.6
L—
Record of 25 dayse
CLIMATIC DATA
Lot N 07^32^ _ Long E t _5L° 51
Station at HOSSANA (N.W.R.C.)Basin _QHIBIE-OMO
Detail Ave. Minimum Temperature Unit °C
ElevationIml
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
1972
1973
1974
-
8.3
76
8.0
10.0
83
10.5
11.7
98
10.5 10.6
12.1 10.7
9.9 9.0
9.8
10.2
8.4
10.8
10.2
10.1
10.2
9 9 10 8 9.4
9.7 8.9 8 0
9.0
5.7
_.. 1
M
-M- Record of 25 daysCLIMATIC DATA Basin GHL01L-DMO....
9
Station at
Elevation
Lat N 07°J>2L____________ Long.E.
_____
Detail _Dpily Temperature
Unit
°
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
1972
-
13 6*
17.1
16 2
17 0
15.6
15.4
15 1
15.6
16.9
16.8
16 9
•
1973
16.8
18.4
20.0
19.6
16.8
15.8
15.0
14.6
15.3
15 4
15.8
14.4
1974
16 0
16.6
16.0
17. 1
15 8
14.8
•
----- ---- .        4
■* 25 daysCLIMATIC DATA
Station at HOSSAINA (NW.RC)  Basin _GHIBIE-OMO
Detail Ave Maximum Temperature Unit °C
Lot N 07°32*
Long E 37°5l‘
Elevation
(m^
Tear
Jon
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
C)ec
Totoi
1972
1973
1974
—
25.3
24.3
19 2*
26.9
24.9
23 7
28 2
22.2
22 0 23 5
272 22.9
24.3 22.7
21.5
21.3
21.1
19.9
19.9
20.1
19.1
21.2
20.9
23 0 24.1
21.8 2 3.5
24 8
2 3.2
—
—
—
—
i
—
-
—
1
L
1
* Record of 25 days10
Rift Valley Lakes Basin Station _AU\BA__£OlLLIO
Lot. N. 07*22*
RAINFALL DATA (mm)
Elevation IB50 Im.)_________ . (m)
Long. E. ~3£*Q6* Province S_HOA
Year
Jan.
Feb
Mar
Apr.
May
June
July
Aug
Sept.
Oct
Nov
Dec.
Total
Remarks
1966
15.0
140.0
88.0
235.0
38.0
93.5
118.0
16 3.0
86.0
26.0
10.0
0.0
1012.5
1967
0.0
3 3.0
56.0
61.0
187.0
—
—
—
—
—
9 0.0
0.0
1968
6.0
158.0
36.0
176.0
54.5
68.5
135.0
135.5
99.5
38.0
35.0
6.0
948.0
1969
54.0
174.0
—
105.0
115.0
78.0
148.0
34.0
—
—
—
0.0
1970
119.0
71.0
184.0
—
98.0
36.0
185.0
170.0
138.0
6 6.0
0.0
—
1971
6.0
1.0
26.5
79.0
204.0
94.0
122.0
105.0
123.0
90.0
90.0
—
1972
3.0
137.0
92.0
173.0
53.0
65.0
78.0
159.0
114.0
19.0
0.0
25.0
918.0
1973
56.0
—
0.0
29 0
187.9
111.0
263.6
210.1
59.4
71.1
0.0
40.8
1974
0.0
13.1
127.2
5.0
81 2CLIMATIC, data
10a
Lat N. 07o22'
Station at ALABA COLITO
Basin rift VALLEY
Elevation
Long E. -38*06*
Detail EVAPORATION
Unit c.M.
-L&5Q
EZJon
F eb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
1973        — 1974       22.0
1
—
21.7
24.8
207
25.4
21.3
------ .
20.5
15.1
16.3
19.5
15.8
13 9
16.9
18.7
20.4
—
-------
1---
—
__
_____
—
----------- ------------ !
II
* Sum of 25 daysCLIMATIC DATA
Lot N
07° 22'
Station at ALABA COLITOBasin JUFT VALLEY
30° 06'
Elevation
Long E
1850
(m)
Detail . Ave. Minimum Temperature Unit
°C_
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
1966
1967
I960
1969
1970
1971
1972
—
—
7.4
12 9
12.1
10 4
13.6
III
12.6
12 5
12.2
85
—
12 6
10.6
—
13.1
12.9
13.1
13 1
13.3
12.5
—
12 2
13 2
13 0
9.4
III
—
—
1973
1974
11.6
10.2
10.0
13 6
—
113
—
12.3
12.9
13.4
6.2
12 8
12.2
13.2
12.0
13.8
127
—
12 2
12 5
13 1
12.6
112
13.4
—
12.8
12.9
13.2
12.4
127
13.2
12.7
—
12 4
13.2
13.2
12 6
11.3
15.8
12.5
—
12.1
—
13.4
13.8
10.8
13 0
10.4
—
10.9
—
II 5
II 3
83
II.1
8.8
11.2
9.4
—
60
10 5
83
8.4
80
68
90
79
—
—
90
76
r1
|12
CLIMATIC DATA
Lot N 07- 22* Long E. _38°06'
Station at __ALABA CO.LITOBasin _RjFT VAXLEY  Elevation 1650
Detail Ave daily Temperature_____________  Unit____________ °_C__ ____ _______ — —
(m)
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
1966
1967
1968
1969
—
—
178
20.0
19 2
18.6
204
20 5
19 3
196
20 2
18 8
—
21 2
190
—
19 8
207
—
22 2
19 9
20 0
202
195
200
—
19 8
20.0
22 2
19 3
19 6
19 5
16.5
19.7
19 8
19 2
20.4
20.4
19 6
—
—
18 0
—
18 2
187
178
180
182
19 3
18 6
18 4
18 0
17.9
—
18 8
18.9
19 3
IB 2
19 2
19 2
—
18 0
180
18 2
177
180
18.1
—
18.6
—
18 8
19 3
18 7
190
—
18 8
—
re 8
18.5
17.2
184
18 3
18.1
—
16.4
18 2
18 6
18 0
16 6
18.5
18 1
—
—
191
17.3
__                    j
1970
1971
1972
1973
1974
19 8
19.7
19 0
19.8
—
20 2
1
J
1 
:13
Station at ALABA COUTO
CLIMATIC DATA
Basin RIFT valley
Detail _Ay.e Maximum Temperature Unit
Lot N _Q7122'
Long.E. .5®° 06 Elevation _____________ I85O_       (m)
°C -------------------------
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sepl
Oct
Nov
Dec
Total
Remarks
1966
—
272
—
1967
—
1968
1969
282
271
29 9
26 0
266
29 8
275
—
1970
26 4
282
1971
26 9
29 0
1972
279
1973
—
29.2
1974
28 1
26 1
.—--------
29 1
264
28 5
276
- -----------
32 0
269
26 8
27.4
257
275
—
273
26 9
--
31 3
292
28 1
25 6
26.8
26 6
274
25 1
28.7
26 9
266
24 9
—
25.3
25 3
255
23 9
270
25 1
23 6
—
23 2
23 0
23.2
23 0
25 2
23.0
23 4
—
24 0
242
22.5
23 5
25 1
22 0
24 8
—
25 I
—
24 I
24 8
266
25 0
26 3
—
26 7
260
257
28 1
25 6
272
25 4
26.8
—
26 7
259
290
276
278
26 4
28 0
28 3
—
—
29 2
27.0
♦
H
—
—
—
f
______14
Rift Volley Lakes Basin
RAINFALL DATA (rnrnj
Elevation- J34Q.Lml Long. E. . 38 0l‘
e
Year
Jan
Feb
Mar
Apr
May
June
July
---------------- 1 Remar ki
1971
1972
1973
—
4.3
27.5
—
94.8
0.0
72.9
11.8
1.6
—
154.8
4 3.7
—
87.5
44.2
—
83.4
78.9
—
9 8.4 215.1
90.7
73.7 49.3
13.3
24.9 739.5 10.6 613.0
•
______________
Source from monthly Weather Report of the C.A.ACLIMATIC DATA
Lot N. _Q£_°_4l2
Station at_______ BILATE ag ESTATE_________ Basin Rift valley
Long E _3§LOI
Elevation _
L34Q_
(m)
Detail Ave Minimum Temporaturc 
Unit
°C
Year
Jan
Feb
Mar
Apr.
May.
June
July
Aug
*
Sep1
Oct
Nov
Dec
Total
Remarks
1971
—
—
—
—
—
—
—
—
I4 5
—
—
I4 I
1972
15.1
16 1
14 5
16 1
153
155
16 3
15 5
I 5.6
I4 8
I4 3
I5.3
1973
15 5
164
15 5
16.1
17 1
167
157
16 2
I6 I
I4 8
I3 9
I3 7
—i
rCLIMATIC DATA
Lot N. 06c 41*__________ _
Station at .BILATE __AG. ESTATE Basin RIFT VALLEY Elevation 1340
Lona.E. 38° O* _
(m)
Detail Ave. Doily Temperature Unit °C__________________________________________________________
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
1971
—
—
—
—
—
—
—
—
—
—
—
—
1972
23.4
23 2
23 2
22 6
22 4
21.6
21 4
21 4
21 8
22 4
22 5
23 4
1973
240
25.0
254
24 8
23 4
22.4
20 8
20 8
22 0
21 6
22 2
22.1
tz
ZOCLIMATIC DATA
Basin RIFT VALLEY
Lot N _ 06741’_______________
Station atQILATE AG ESTATE
Detail _Avj
Long.E. _38®pi‘ Elevation1340
_______
(m)
Unit°C-
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Tolal
Remarks
I9TI
—
—
—
—
—
—
—
—
1972
31 6
30.4
31 9
29.0
294
278
26.4
1973
32 4
336
35 2
33 4
29.7
28 2
25 9
27 4
25.5
279
29 5
279
—
29.9
28 5
—
30.7
30 5
29 8
31.5
30 5
1974
LRift Valley Lakes Basin
Station^ SHONE___________
Lot. N. ^Q7 °J2Q'______________
RAINFALL DATA (mm) Elevation____________________
Long. E. _37257?
(m)
Province—$1° AW0
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sepl
Oct
Nov.
Dec
Total
Remarks
1973
1974
0.0
*6.9
35.7
0.0
196.0
63.5
18.2
181.3
151 .4
73.2
334.1
176.2
12 6.7
69,6
0.0
32.2
L
_______
-* Record of 22 days19
Rift Valley Lakes Basin Stations! LAt £ N_T EJ\LA
Lot. n. 06*58'
RAINFALL DATA (mm)
Elevation
Long. E. 3J°Q9’
(m)
ProvinceSJDAMQ
Year
Jan.
Feb
Mar
Apr.
May
June
July
Aug
Sept
Oct
Nov.
Dec
Total
Remarks
197 3
—
3.2
0.0
59.7
90.7
112.6
293.6
62.6
114.7
72.5
13.4
—
----------
-
1' Valley Lakes ^_B_OSh Station & bonsa
Lot N 070
08'
HA INFALL _DATA^j_mrn2 Elevation           20QQ__ Long E. 370 59'
(m)
Province. SHOA
Year
Jan
Feb
Mar
Apr
May
June         July
Aug
Sept
Remar V
1965          - 1966        5 . 0
1967        2 6
1968        2 8
1969        37 3
1970        122 3
1971            32 2
1972          —
1973        31 1
0 0         72.9 154 3       68 5
36 2       93 3
69 7      100 3
145.3      117 9
80 0        236 3 57          66 7
89 1           42 4 66          00
-
204 9
179 2
186 5
142 8
45 8
100 9
215.3 41.4
56 7
61 9
168 0
64 2
96 4
62 5
162 2
—
1519
79 2
89 0
86 5
138.0
76 5 65
118 7
112 6
246.2
135 8
100 5
158 4
184 4
1064
194 6
222 5
215 8
102 9
174 8
1113       144.2
II5 I
I69 6
I97 4
I39 8 HO 4
77 6I I4I 0
Oct
I40.9
33 3 56 6 32 4
O9 66 2
I
Nov
29 4 72
204 I 38 4
Dec             1 cfal 16 5
0   0      1234 5
04
II 0
1382 6
1099 4
OI         00        9889 0O
842^     72 3
1047.9
43 3      81 4 107 2  I 23 8 0
143.6   i so,        47 5
—             85 0
78 8
22 0
I
'---------
L
1 ______
Source Civil Aviation Adm ms fration
L2i
Rift Valley Lakes Basin
Station SAKIE ________________
Lat. N. _0 6°53,/
RAINFALL DATA (mm)
Elevation1SXLQ
Long. E.38_°0 0*
(m)
Province—SJOAMO
Year
—
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept.
Oct
Nov
Dec
Total
Remark s
1965
—
0.0
58 9
1966
1967
15 7
58.8
64.6
8.6
17.9
75.8
1968
82
1969
1970
1971
|972
1973
59.9
63.5
13 0
107 7
1 II . 1
31.0
—
37.5
52.3
III .4
221.0
58 5
29.3
—
151.1
181.5
191.6
209.0 96.6
105.0
155.0
136.0
—
94.8
38.7
250.2
73.5
127.6
—
175.5 136.9
174.7
66.8
64.0 142 .8
67.7
51.1
144.0
165 5 133.3
—
06.2
299.0
187.5
—
100 5
—
164.4
89.0 25.4.7
45.2 213.2
1404
lll.l
11.5
182.0 141.8
—
165.7
48.2
7 5.6
69.0
34.3
1 51.5
166.0 110.0
—
—
167. 4
68.1
58.3
65.3
16.5
107.5
—
03.8
11.3
124.7
27.2
54.5
—
43 4
2.1
14
2.7
6.2
15.0
—
54.6
—
1093.5
1269.5
—
907. 2
—
—
. .. .
60.5
—
—
—
—
10 .0
—
40.2
—
-----
1
—
-----------
—
—
—
—
-
—
----------
-4
Source* Civil Aviation Adminisfration22
Z?/7f Valley Lakes Basin Station __ABE_L_A (WA DllJ
Lot. N.          06°42'
—
RAINFALL DATA (mm) Elevation____ 1400__________
Long. E.          37°56*
(m)
Province—_S_LQA_MCL_
Year
Jan
Feb
Mar.
Apr.
May
June
July
Aug.
Sept
Oct
Nov.
Dec.
Total
Remarks
1971
—
—
—
—
—
—
124.0
91 .5
79.8
103.2
9.3
18.1
—
1972
II.8
48.9
15.4
1544
126.8
119.9
131,6
83 1
37.8
51.2
97.2
19.3
897.4
•
PREC
PITATI
ON
r-^e
1973
11.5
0.0
0.0
8.6
14 4.9
73.7
171.9
95.0
32.8
114.0
4.4
0.0
656.8
AVE.
MAXIK
UM TJ
MPERZ
TURE
•c
1973
31.1
32.7
33.7
—
28.7
26.8
24.8
24.1
27.2
27 9
29.8
29 9
AVE.
MINIMI
M TEN
P.
1973
14.1
16.4
16.6
16.7
16 5
15.2
15.0
14.9
14 4
13.0
12.1
DAILY
TEMP.
1973
22.6
24.6
25.2
—
22.7
21.6
20.0
19.6
21.0
22.2
21.4
21.0
Source * WApu ”ft Valley L <J k e >
WQLLAMO- SODDO (SIM) L.ai N 06°52'
RAINFALL DATA (mm)
Elevation 2060. Long E 37° 44*
(m)
Province. SlDAMO
I
I954
I955
I956 j
I957
I958
I959
I960
I96I
I962
I963
I964
I965 | I966
197I
I972
Jan
Feb
Mar
—
587
—
I88.0
540
I36 0
I230
—
85.2
—
63 8
96 I
99 I
Apt
56 9 83 3
—
227I
I55.0
I55.5
—
—
2I2 8
265 5
11 6 8 I93 4
22I 7
Moy
June
272 5 2226
—
I74 5
2765
I2I 0
—
—
no 2
89 5 2I9 2 59 0
65 4
July
246 0 I450
I53 9
208 5 304 2 275.3
—
295 5
20I 0
I 60 2
253 5
I27 9
409 I
Aug —
2575
2580
87I
I
II3 8
I29 0
— —
338 0
I0I 0
23 8
—
86 I
30 3 4
Sept
Oct
Nov
Dec
Total
Remai V
—
49 2 •'      I 0
—
43.9 j     26 5 58 5 j     59 5
380       78.0 j 6.0       42 0
—
-
20         00 7 0         76 0
I52 9 I84 7
235.5 47.0
II60
—
—
I23 5 I57 6
25 3
—
63 5
44 0
—
2750 1030
1110
—
—
154 5
—
24 3
—
178 8
—
—
—
30 8
42 5
21 5
72 0
—
151.5
49 5
62 6
—
—
—
23 7
39 5
—
174
20
25
32 0
—
15 4
37 3
33 5
102 0
—
—
88 5
1456.8
-
1318.2
i° i
3
60
I00
I
44
i 79 I
■
J____
2220
800
280.0
30 5 i 283 0 2II 5
___ i I 2 4.9
263 2 I I40.5
93 3
I05 5
32 9
I
I
I4
7 0 I05 I
I387
j 2290
i
2696 i______
1.
i
1
_____
Source Civil Aviotion Administration24
CLIMATIC DATA
Lot N O6°52'
Station at wollamo - SODDO (S i m.) Basin
Long E 37°44*
GHIBIE - OMO
Elevation
2060
(m)
Detail Ave. Daily Minimum Temp.r: imatic i
Station at wollamo— SODDO (S I M) Basin GHiBiE-cMO Detail Ave Daily Temperature
L
t levat icn
06°    52    ‘ 37’ 44' 2060
/ Mar        / 4pr
May     1 June         I July
—      1 23 0      23 3
189 , 172
—
24 9     25 2
—
24 4
——
23 0 20 7
1958       22 2      22.6 1959       23 4      24 0 I960
1961 1965 1966
24 2 23 3
—
—
19.2
22 6 22 6
21 8 20 8
21.0
19 4
18 6
17 3
22 8 26 2 24 2
227 23 2 23 6
21 .8 23 5 23 5
19 9      17 8
218        —          —
1
-— 190      18 8        —
18 8       174       17.0      16.0
172
166
15 6CLIMATIC L AJA Station at wollamo-soddo (S i. m ) Basin ghiqie-omo
Detail Ave. Daily Maximum Temp
Lo1 N Long E.
Elevation
06° 52
37° A A' 2060           (m)
Uni1
°C
tear
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Tolai
Remark .      1
I954
I956
I957
I958
I959
—
—
—
3I.7
—
33 I
T
30.4 |
24 6
—
297
259
26 7
22 8
—
257
24 2
—
32 2
32 5 30.7 .
-I
I960
I96I
I962
1963
I965 '
I966
—
366
3I.9
32.6
34 2
—
—
30 0
L
—
37.2
3I.I
33.6
354
—
—
300
—
35.6
33 6
32 I
32 2
—
—
—
265
24 7
—
—
27 I
23 9
23.6
32 4
—
29 4
3I.6
28.0
300
—
—
24.9 24.0 23.7
—
—
25 5
—
2I 3
2I6
—
25.2
22.0
23.5
—
2I 7
22.3
243
20 6
20.1
■
2I4
229
240
—
20 5
26 5
3I 8
3I0 J 28 2 ,
-
—
26 4
24 2
259
—
—
28 2
293
281
—
—
—
39.6
33.4
337
34 1
—
■■
289
276
—
—
—
357
340
333
34 1
—
—
30 3
25,9
—
—
r— -
I
—
—
1—
--
—Rift Valley Lakes Basin GHIBIE - OMO station WOL L AMO - SODDO ( N W R C ) *
Lot. N X>6*52'________________
RAINFALL DATA £mmj
Elevation 20 5Q--------------------------
Long. E. _37*44’
<> t
(m)
Province- SIDA MO
/ Year / Jan         / Feb        / Mar
Apr.   | May       1 June   T July
Aug
Sept
Oct
Nov
Dec
Total
Remarks
/ 1969 /
1970
1971
1972
1973
1974
-
II 3.5
39.5
8.5
I—
--
' 31.2 3 01.6 11.4 101.8 59.8 71.4
—
161.4
109.9
24 6.9
—
101.0
197.4 112.3
137.8
169.3
113.9
—
195.1
301.3
131.1
—
2 62.5
130.8
21.2
—
221.1
245.5
4 1.9
—
92.8
119.5
195.1
—
0.0
32.3
47.9
0.0
5.0
90.0
1623.0’
1548.7’
•
—
7T"
—
—
-----------
—
—
Outside Bilote Basin.CLIMATIC DATA
Station at JVOL^Mp-SODDO*(N.W.R.C) gasin _GHJB!E-OMO_
Detail _Ave Mjpjrnjjni./Temperature Unit
Lal N. _06»52' Long.E.
Elevation
°C______
2050 (m),
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
0c1
NOV
Dec
Total
Remarks
1969
—
—
—
—
—
—
—
—
—
—
—
I2 I
—-
1970
II 5
13 0
12 3
12.0
Ill
104
97
9.4
96
8.9
92
8.3
1971
9.8
12.4
14 1
12.2
13.0
10 9
75
7.7
7.5
7.8
7.8
77
1972
82
83
87
8.3
8.5
9.6
7.5
8.2
86
9.1
8.4
—
--
_
------- ---- _                        -4
[
■“ 129
C L.IMATIC DATA
Lot N
OG° 52'
Long E
37* A A
station at wol l.amo - &UDDO M ( N W H.C ) Basin GHIBIE-OMO
Elevation
2050 ln>)
Detail Ave. Daily Terrperaluie________________________Unit
°C
/ Year           / Jon          / Feb        /Mar        1Ap'     1 May
June            July
Aug
Sept
Oct
Nov
Dec
Total
Remark'
/ 1969
1970
1971
1972
178
17.4
-J
1
-
19.4
19.0
16 2
-
15.7
-I
180          18.0 |   17.2 198        179       176 16 8       16.4       16.2
1
—
15 8
154
146
—
15 0
13 6
134
—
14 4
13.8
13.9
—
15 6
14 1
14.3
—
15 8
14.3
14 8
—
170
14.8
14 4
13 7
16 8
14 3
-------------- -j
J
J
-   -I
1
-
■
rz
'-
—
—
—
------ ----
•
—
—
— JJ __ . j —!
1
h-z*
-M-Oufside Bilote Basin30
CLIMATIC DATA
Station at W0LLAM0-S0D00 (N.W R.C.)M Basin GHIBIE-OMO
Detail Ave. Maximum Temperature Unit
Elevation
Lot N. Q6°52’ Long.E. 3T°44‘
2050 Im)
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sepi
Oct
Nov
Dec
Total
Remarks
1969
1970
197 1
1972
—           —          —          —         —           —         —          —        —          —         —         25.3
240       25.7       23.8      24.1       23.2      21.1       20.2     19.3      21.7       22.6      24 7      25.4
24.9       25.7       25.6    | 236       22.1       19.8      19.7       20.0      20 7      20.8      21.9       20.9
23.2      24.2       25.0       244       23.8      19.7       19.4      19.6      20.0      20.4      204
1
1(
t
i
l.i * Outside of Blllote Basin
11Voll.y L.jXes BoJ(
R UNFALL DATA (mm)
■fOfion YIRB A *
I at N 06“56'
Elevation
(n~>
r—
year
3 ®’17
Provinc e. S 10 A M 0
Jan
Feb
Mar
Apr
May
June
July
Aug
Sepl
Oct
Nov
Dec
I ola 1
Remark',
1973
1974
—
17.2
05
30.4
55
233.7
96.1
68.4
204.3
136.2
126.5
2 20.8
—
116.2
—
151.2
—
170.3
-
8.5
—
21.6
—
—
—
1
•
_
*- Ouf»lde Bllote Ba«inRrff VaUey Lakes Bo-;in Station WEST AWASSaJ
Lat. N 07*10*
RAINFALL DATA (mm)
Elevation Long. E. . 30 26'
32
O
(m)
Province..3.10 AMO
1 Year
1973
Jan
Feb
Mar
Apr
May
~~~
—
■---------------------
LJ
X Outside Blisle Basin
/CLIMATIC DATA
Basin RIFT VALLEY LAKES Elevalion Long E' ‘ 3S°?6
Unit ____ Cm
Oct
Lat N. 07° iq1
Station at __ WEST AWASSA*
Detail
P Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Nov
Dec
Total
Remarks
1973
—
—
—
—
—
17.2
18.2
170
13.4
13.1
11.0
Ii
i
12.6
_ --------
-- --- —
--R'/fr Valley L. a k e s & os i r Station AJE
Lal N 07 °I5 Year
1972 1973
RAINFALL D ATA_ (mrn)
E le va lion Long E. 38-21
Province SHOA
May         June 130.7      65.6      102.2
215.5     74.1
T oftj |              Remark,
152.7
‘‘Record of 13 days
Outside Bllafe Basin> Lakes Basin
WULBAREGH * 07°42'
Maine ALL DATA (mm)
Elevation Long E 38-I2'
imj
E'fovince SIDAMO
n
Feb
Mar
Apr
115.6
77.7
165.4
13.9
1.0         0.0         22.5
May
37.0 166.7
June
154.6
128.5
July 212.6 186.5
Aug
—
Sept
— Oct
1
hu.
0.0
------------------ 1—
Ti tai          , Remar ►
174.5     75.3      0.0
214.0    221.2     62.1       0.0
— 0.0 0.0
i
.jfslde Bilafe Basin36
Riff Valley Lakes Basin Station AWASSA
Lot. N. _07 ° 03*
RAINFALL DATA (mm)
Elevation _ 1760
Long. E. _Mt29l
(m)
Province___SIDAMO
Year
Jan.
Feb.
Mar
Apr.
May
June
July
Aug
Sept.
Oct
Nov
Dec.
Total
Remarks
1966
92 5
0.0
117.5
148.5
160 0
1967
1968
1969
10 5
0.0
0.0
—
36.0
—
—
35.4
110.8
1970
44.3
61.8
1971
11.6
2.6
138.8
139.7
47.9
169 5
—
157.0
89.4
65.9
—
1450
131.0
53.5
640 132.0
—
68.2
216.5
—
139.0
96.0
23.0
—
—
232.1
34.9
1972
1973
1974
15.7
15.0
7.3
95.3
13.0
53.7
0.0
0.0
0.0
II.0
0.5
4.7
10 9
36.4
4.4
18.1
95.0
132 4
7 6.7
17.0
80.9
57.4
181.7
124.2
128.0
127.6
61.1 17 3.8
99.4
89.6
93.9
140.3 100.7
—
136.6
172.2
114.4
158.9
207.7
92.0
115.0
139.7
108.8
67.0 118.2 89.0
60.5
—
33.0
48.5
109.6
64.2
15.9
41.0
24.3
0.0
130.5
7.6
0.4
1027 0
—
—
1003.5
965.8
—
—
801.4
-----------------
----------------.
--------  . —
*                Outside Belate Basin *24 Days Record'MAT
IC I TA
37
A WA SSA X
Defa , Evaporation
11
/ Year        1 Jon
IIF 7 VALLEY LAKES nil Cm.
□7°03* 38* 2 9*
1 Feb
' Mat          1 Apr
May
1972
1373
19 74
12.2
170
13.7
15.3
23.2
June
13.5
T
July
•
Aug
Sept
14 2
178
15.B
□tiGn          1760
i'.ts.
15.3         12.1
lb.8          15.2
14.8          12.3
io.e          12.3 10.2
13.3 12.3
10.8 9.4
10.5
10.3
13.3
15.8
14.8
14. 0
-1
175 4
—
------  .
—
—
--
-
■
-
-1
___
1J
— i
i
“ '1
_____
X Outside Bilote Basin
t-1*8
CLIMATIC DATA
Lot N. o.7I_^3 Long.E. 18° _ 29'
Station at awassa * Basin
valley lakes Elevation »760
(m,\
Detail Ave. Minimum Temperature Unit °C__________________________________________ -
Year
Jan
Feb
Mar
Apr.
May.
June
July
Aug
Sept
Oct
Nov.
Dec
Total
Remarks
1966
7 . 1
II .9
10.5
12.8
II. 1
II . 1
13.0
II .9
12. 0
III
5 .3
4 8
1967
4 8
7 0
10.5
12.6
13.6
12.6
13 8
12.6
12.1
II .2
10 8
2. 8
1968
1 . 6
12.5
9 .3
10.9
10.4
12.6
-
II .5
II . 1
9.7
-
8.4
1969
9 .5
II . 8
14.1
12.2
12.3
II . 8
-
—
—
—
—
—
1970
13.2
12.1
14. 6
14.8
14.1
14.7
13 9
14.4
14.2
14 0
7 . 8
7 8
1971
11.2
12 6
12.5
-
13.3
14.1
14.0
13.6
13.0
13. 1
10 3
8 . 8
19 7 2
10.0
12.6
II .3
13.7
12 9
13.3
—
13.4
12.8
1973
11.6
10. 8
IL 7
13 8
14.5
14.2
13.8
14.2
13.6
II. 1
II 7
10. 9
9.5
10.8
5.6
1974
9.3
11.2
13.9 X
11.4
13 6
12.6
•
.
* Outside Bilate Basin
ouf.,noi-CLIMATIC DATA
Station at _AWAS_SA * Basin R,pT valley lakes ElevationL760
Detail Ave. Daily Temperature                   Unit °C
Lot N. o? ° _03‘ Long. E .
Im)
X 2 4 days aver age
• rut♦
S tai ion at AWASA Defail
CLIMATIC DATA
Basin JLLtl_VoUfxA£_Mll
Lat.   N.
Lona.E.
Elevation .J16.Q
____
38° 29*
nmJIemperaluiA_ Unit
I'llMean and Total Monthly and Annual Flows of
Bilate River at Alaba Colito
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul .
Aug.
Sep.
Oct.
Nov.
Dec.
Total
_6
10 cu.m.
Average flow
cu.m./sec.
0.58
0. 46
1.41
1.65
5.42
14.33
24.96
34.30
43.78
20.68
5.61
1.14
1971
12.96
Total flov/
10^cu.m.
1.55
1.11
3.78
4.26
14.53
37.15
66.86
91.85
113.48
55.38
14.55
3.86
408.36
1972
Average flow
cu.m./sec.
0.71
3.20
2.84
6.48
7.63
4.77
14.12
35.96
34.81
14.11
2.19
0.58
10.68
Total flow 106 cu.m.
1.91
7.99
7.60
>9.02
? 0.43
12.37
37.83
96.31
90.22
37.79
5.68
1.54
348.69
Average flow
cu.m./sec.
0.49
0.28
0.20
0.21
2.11
1.80
7.40
24.09
44.77
24.57
5.46
1.05
9.41
1973
Total flow 10  cu.m.
n
1.31
0.67
0.54
0.54
5.65
4.67
19.83
64.51
116.03
65.81
14.16
2.82
—
296.54
—
Average Annual Flow for 1971-1973*. 351.20 X 10^ cu.m
or
11.2 cu.m./sec

Summery

Bilate River Basin Hydrometeorological Data Summary

Bilate River Basin Development Study - Hydrometeorological Data Summary

        Key Findings
        Report Date: July 1974
Authors: D. Jovanovic & Teclegiorgis Goitom (National Water Resources Commission)
Scope: Compilation of hydrometeorological data from Bilate River Basin and neighboring areas
Time Period: Data from 1953-1974

    

Station Network Overview

Station Type	Count	Details
Meteorological Stations	7 within Bilate Basin	Classes 2-4 (no 1st class stations)
Hydrological Stations	2	Shashemene Soddo bridge and Bilatentena Bridge

Station Classification System

Class	Equipment
1st Class	Maximum/Minimum thermometers, dry/wet-bulb thermometers, thermograph, hydrograph, rain-gauges, barometer, solar thermometers, evaporation pan, anemometer, sunshine recorder
2nd Class	Maximum/Minimum thermometers, dry/wet-bulb thermometers, evaporation pan, anemometers, rain-gauges
3rd Class	Maximum/Minimum thermometers, standard rain-gauge
4th Class	Standard rain-gauge only

Key Hydrological Data

Year	Average Annual Flow (m³/s)	Total Annual Flow (10⁶ m³)
1971	12.96	408.36
1972	10.68	348.69
1973	9.41	296.54
1971-1973 Average	11.2	351.20

Notable Stations

Station Name	Type	Elevation (m)	Years of Record	Key Data Collected
Hossana (S.I.M.)	3rd Class	2290	1953-1974	Rainfall, min/max temperatures
Alaba Colito	2nd/3rd Class	1850	1966-1974	Rainfall, evaporation, temperatures
Bilate Ag. Estate	3rd Class	1340	1971-1973	Rainfall, temperatures
Wollamo Soddo	3rd Class	2050-2060	1954-1973	Rainfall, temperatures

Recommendations

The report notes that detailed proposals for improving the hydrometeorological network in the Bilate catchment will be provided in the next stage of the study.