SOMALIA
GEOGRAPHY AND POPULATION
Somalia, with a total area of 637 660 km2, has the longest coastline in Africa: in the north on the
Gulf of Aden and in the east on the Indian Ocean. It is bordered by Kenya in the south, by Ethiopia
in the east and by Djibouti in the north-east.
The cultivable area was estimated at about 8 million ha in 1985, or 13% of the total area. In 1984, it
was estimated that about 980 000 ha were cultivated with annual crops, i.e. 12% of the cultivable
area. About 18 000 ha consisted of permanent crops in 1993.
The total population is about 9.25 million (1995), of which 74% is rural. Average population
density is about 15 inhabitants/km2. The annual demographic growth rate is approximately 3.1%.
Agriculture is the second traditional occupation for most Somalis, after nomadic livestock grazing.
Some 70% of the working population was engaged in agriculture in 1991 and this sector accounted
for 65% of the country's GDP, including forestry and fisheries. Bananas are the principal cash
crop, accounting for 40.3% of export earnings in 1988.
CLIMATE AND WATER RESOURCES
Climate
The climate of Somalia is of the arid to semi-arid type, with an average annual temperature of 27°C.
It is hotter and drier in the interior and on the Gulf of Aden, but cooler on the Indian Ocean Coast.
Annual rainfall is less than 250 mm in the north, about 400 mm in the south, and 700 mm in the
south-west. On average, the country receives 253 mm of rainfall per year. Rainfall distribution is
bi-modal. It falls mostly in the gu (mid-April to June) and the der (October to December) seasons.
The country is regularly subject to periods of drought.
Water resources
The total internally produced water resources are estimated at 6 km3/year, the incoming surface
water resources at 9.74 km3/year. Water resources in Somalia are dominated by surface water.
Along the Gulf of Aden, there is a mountainous zone with rugged relief which is subject to
torrential flows, causing considerable erosion. The land slopes down towards the south and the
south-flowing watercourses peter out in the sands of the desert.
The rest of the country consists of a plateau, which is crossed by the two main rivers of Somalia,
the Shebelli and Juba rivers, originating from the Ethiopian plateau and draining in a south-easterly
direction towards the Indian Ocean. Over 90% of the discharge of these rivers originates from
runoff in the Ethiopian highlands and there are large variations in discharge from year to year.
Within Somalia the discharge decreases rapidly, due to losses by seepage, evaporation, overbank
spillage due to low channel capacity and water abstraction. Often the rivers cease to flow in the
lower reaches during the early part of the year. Contribution to river flow from inside Somalia
occurs only during heavy rainfall.
The contribution of other drainage basins to surface water is generally insignificant. This normally
consists of occasional runoff in seasonal watercourses.
Groundwater potential is limited because of the limited potential for recharge. In the northern
region, some subsurface flows in the wadis are tapped for small irrigated farms (1-25 ha).
However, studies are still needed required for the exploration of groundwater.
Dams
There are no dams on the Shebelli river within Somalia, but off-stream storage exists at Jowhar
(200 million m3), upstream from the greater part of the irrigated lands and downstream of the
Jowhar sugar estate. A second off-stream storage reservoir, which would store 130-200 million
m3, is proposed for Duduble, upstream of Jowhar. Another proposed dam is the Baardhere dam on
the Juba river, primarily for hydropower, but which should also provide maximum water control
and storage in the Juba Valley irrigation projects.
Water withdrawal
In 1987, total water withdrawal was estimated at 0.87 km3 (Figure 1). Agricultural water
withdrawal, about 0.79 km3 or 97% of total withdrawal, is mainly for the full or partial control
irrigation schemes.
IRRIGATION AND DRAINAGE DEVELOPMENT
Despite the importance of irrigation for the main cash crops in Somalia (bananas and sugar cane),
the development of irrigation and drainage systems is very poor. In the main irrigated areas in the
Juba and Shebelli valleys, there is no organized system of water allocation and management and
there is a salinity problem. Irrigation potential is estimated at 240 000 ha. In 1984, the total water
managed area was about 200 000 ha, of which only 50 000 ha had reasonably controlled irrigation,
the rest being spate irrigation entirely for maize production (Figure 2).
In 1984, as regards full or partial control irrigation schemes, about half were traditional, small-scale
schemes and half medium and large private and state schemes (Figure 3), with irrigated farms
supporting some 135 000 people. Irrigation is practised mostly along the Shebelli and Juba rivers.
For irrigation water management and drainage, services are almost non-existent. The lack of an
effective water authority or management system is one reason for the low (20-25%) irrigation
efficiency and deteriorating performance. Farmers, individually or in groups, abstract water from
rivers or canals regardless of crop rotation or crop water needs. Water use is governed by proximity
to the distribution outlet and extraction upstream.
The major irrigated crops are maize (spate), sugar cane (mainly state farms) and bananas (mainly
private farms) (Figure 4). Official statistics show, for the period 1970-1986, a slight decrease in
area and a static yield for bananas, while there was an increase in area and a considerable drop in
yield for sugar cane. This can be attributed mainly to the increasing drainage problems and soil
salinity at the Jowhar sugar estate on the Shebelli river. As for maize, an important irrigated and
rainfed crop, production increased sharply due to the wide expansion of the planted area (from 102
000 ha in 1971 to 350 000 ha in 1985), while yields remained low. In irrigated areas, maize yields
remained low because of the inefficient irrigation system, limited availability of research, the
absence of higher yielding varieties, and a shortage of inputs.
INSTITUTIONAL ENVIRONMENT
The main institution in charge of water resources management and development in Somalia is the
Ministry of Mineral and Water Resources (MMWR), and its National Water Centre (NWC). The
Water Development Agency (WDA) is responsible for operations exploiting groundwater resources
for domestic water supply.
TRENDS IN WATER RESOURCES MANAGEMENT
A study carried out by the World Bank in 1987 outlined a proposed strategy for the development of
irrigation, drainage and water management systems. In the short term, the plan included:
rehabilitation of the existing systems; completion of the Water Master Plan for the Shebelli and Juba
rivers; registration of all irrigated farms within a cadastral system; allocation of legal water rights
and management of the water allocation system; development of an effective system of water
charges; gradual transfer of operation and maintenance responsibility to the holders of water rights;
and incentives for adaptive research.
For the long term, the construction of the Duduble reservoir, to control the Shebelli river, and the
Baardhere dam on the Juba river were planned. However, even with the completion of the Duduble
reservoir, the water availability would still be limited in quantity and quality due to the salinity
problem. Upstream 'return-to-river' drainage might contribute to higher salinity further downstream
unless outfall drains to the ocean were constructed, in which case the maximum area in the Shebelli
valley would be about 50 000 - 60 000 ha, if irrigation efficiency increased to 50%. As far as the
Baardhere dam is concerned, it was originally designed to irrigate up to 170 000 ha, but the size of
the dam seems to have already been reduced to irrigate 50 000 ha, because of the need to share
water with Ethiopia.
The future of irrigation and agriculture in general is primarily related to a return to political stability.