1. 1.5 Birds Eye view of Spate Irrigation Experience In Oromia Yohannes Geleta

2.  1.7 million ha potential irrigable land is available (Slope < 5%)  only 212,796 (14%) hectares have been developed in the region  In the past, four categories of irrigation schemes have been recognized. Those categories of irrigation schemes include:  Traditional irrigation schemes  Modern small scale irrigation schemes constructed by both Government and NGO's  State owned irrigation farms/ Large scale irrigation schemes  Privately owned irrigation farms In the past irrigation developments in Oromia Region were restricted small-scale irrigation schemes (up to 200-300 ha), only on river diversions & Spring development.

5. Vision  Irrigation Water Supply and Drainage Development process team (IWSDDT) under the umbrella of OWRB aspire to see people of Oromia prosperous through proper irrigation water supply, irrigation water resource utilization for agriculture and proper land drainage management. 212,796 hec. 13 % 1.7mil.he. Irrigation Developed Irrigation potential Agricultural Potential land The future direction indicates that it is not only to bring irrigation potential area which is 1.7 mil.hec. but also to supply irrigation water to all agricultural potential land of Oromia.

6. Mission  The Irrigation and Drainage development process team under the sunshade of OWRB mission is to support peoples of Oromia with their genuine participation to attain food self-sufficiency and produce surplus for market by securing water for agricultural production through irrigation and land drainage development with sustainable policies, strategies and laws of water resource management. Major Objectives up to 2015 include:  To supply sufficient and continuous irrigation water for 928,737hec. which increase Land Under Irrigation from existing 12% to 54%  To carry out drainage land development i.e to decrease the current 4 million hectare waterlogged area by 70%

7.  Breakthrough to medium and large scale Irrigation Development  Aggressive implementation of schemes such as Fentale, Tebela & Kolba  Spate Irrigation Development  Ground Water Development  Modern Land drainage Development  Small pump Irrigation Development  Water Fund Establishment  Irrigation Water Fee Implementation  Cost Recovery  Capacity Building in Design and Construction  Application of New W. saving technology like Geo-membrane lining, hydro flume,closed conduit irrigation system and others.

8.  Spate Irrigation in Oromia Region specially in lowland area of Oromia is traditionally Known and experienced.  Traditionally Known as Galchaa direct meaning is to collect and transport flood to the command area.

9. Contd.  ‘Modern’ Spate Irrigation In Oromia is Started in 1998 in East and West Harerge Zone  The First Spate Irrigation in Oromia mainly are  Ija Galma waqo (Fedis – East Harargee)  Ija Malabe(Fedis- East Harargee)  Bililo ( Mi’eso- West Harargee)  Hargetii (Mi’eso – West Harargee)

10.  East, Southeast and South Oromia:  Huge Potential for spate & conventional irrigation development Lowland areas of Oromia, especially those in Hararge, East Shawa, Arsi, Bale, Borena and Guji zones are known to have ample potential area for spate irrigation, small, medium & large scale conventional irrigation development. 10

11. No clearly classified & Recognized spate irrigation in the region. But to differentiate one from the other we Can be classify based on the water availability 1. High land / semi-perennial/ Spate - From the wadi which has water flow for more than a month (semi- perennial) Which resembles to semi conventional irrigation Like Boru, Hargetii, e.t.c 2. Conventional Spate From flashy rivers – rivers which have flow of short duration, hours or days. Like Ija Galma Waqo

12.  Study and Design of spate irrigation plan for 2000 -2002 Eth.cal  2001 -10488ha -6579 HH  2000 -47450 ha- 29250 HH  Construction plan for 2000-2002Eth. Cal  19833ha -19829 HH-2001  38033ha -36413HH – 2000

13.  More than 7000ha benefiting the community  Boru  Ija Galma Waqo  Hargeti  Bililo  Dhakata  And others

14. Moisture increase on the farm land

15. Contd. Transports Fertile soil

16. Yield increase: Effect of Spate irrigation on crop production  Field visit & data collection (2007) by IFI project –(OWRB & JICA) on 280 ha land is done-  Production is more higher than non irrigated condition and good rain season production.

17. Wheat with out irrigation Wheat with irrigation

18. Teff without Irrigation Teff with Irrigation

19. Traditional Intake From WadiFrom Road side

21. It is blessing transports fertile soil to irrigation land. May be curse it affects the structure and canal

22. Silt in the D.box Silt in the main canal b/n two structures

23. Full of Silt Canal with good gradient for spate water

24. Flood Crossing structures Low Cost Drops

25. Sheet metal flumeConcrete Flume

26. Critical Conditions Planted in the middle of the canal  WUA characteristics is different from the conventional  Land holding size is different  No law for spate irrigation land  By law is not formulated for spate irrigation  No water fee  No turn

27. Contd. Scheme Management  Scheme hand-over to the community is not exercised.  Operation manual has to be considered  Maintenance in the traditional is labour consuming (head work)  Silt removal from canals is also critical issue