ministry of water and irrigation (mowi united republic of tanzania

MINISTRY OF WATER AND MINISTRY OF WATER AND IRRIGATIONIRRIGATION

(MoWI(MoWI

UNITED REPUBLIC OF UNITED REPUBLIC OF TANZANIATANZANIA

TANZANIA WATER BASINSTANZANIA WATER BASINS

DISTIRIBUTION OF IRRIGATION DISTIRIBUTION OF IRRIGATION POTENTIALSPOTENTIALS

High potential: 2.3 million ha High potential: 2.3 million ha Medium potential: 4.8 million ha Medium potential: 4.8 million ha Low potential : 22.3 million haLow potential : 22.3 million haTotal 29.4 million haTotal 29.4 million ha

KILIMANJARO ZONAL KILIMANJARO ZONAL IRRIGATION AND TECHNICAL IRRIGATION AND TECHNICAL

SERVICES UNIT (KZITSU)SERVICES UNIT (KZITSU)

The KZITSU covers the three regions:The KZITSU covers the three regions:– Tanga - 26,809 sq.km;Tanga - 26,809 sq.km;– Kilimanjaro - 13,309 sq.km;Kilimanjaro - 13,309 sq.km;– Arusha - 36,486 sq.km.Arusha - 36,486 sq.km.

Total irrigation potential is Total irrigation potential is approximately 219,542 haapproximately 219,542 ha whereas whereas

total area under irrigation is total area under irrigation is estimated at over 96,513 ha as estimated at over 96,513 ha as

follows:follows:Tanga region: Tanga region: 8,676 ha 8,676 haKilimanjaro region: Kilimanjaro region: 45,767 ha45,767 haArusha region: Arusha region: 42,070 ha 42,070 ha 96,513 ha 96,513 ha

According National Irrigation Master According National Irrigation Master Plan(2002), there are four (4) types of Plan(2002), there are four (4) types of small-holder irrigation schemes existing in small-holder irrigation schemes existing in Kilimanjaro Irrigation Zone:Kilimanjaro Irrigation Zone:

Traditional irrigation schemes………. 630 Traditional irrigation schemes………. 630 Water harvesting schemesWater harvesting schemes ((Spate Irrigation)Spate Irrigation) …………..…………....6 …………..…………....6

Modern irrigation schemes……………..26 Modern irrigation schemes……………..26 Improved traditional irrigationImproved traditional irrigation

Schemes………………………………...42 Schemes………………………………...42 TOTAL 704TOTAL 704

ZONAL IRRIGATION AND TECHNICAL SERVICES UNITS(ZONAL IRRIGATION ENGINEERS / OFFICERS)

IRRIGATION INFRASTRUCTURE

CONSTRUCTION AND SUPERVISION SECTION

(HEAD)

IRRIGATION RESEARCH, TECHNOLOGY PROMOTION AND

MONITORING & EVALUATION SECTION (HEAD)

IRRIGATED CROP PRODUCTION PROMOTION AND TECHNOLOGY

DISSEMINATION SECTION(HEAD)

IRRIGATION RESEARCH, TECHNOLOGY PROMOTION AND MONITORING &

EVALUATION DIVISION(ASSIT. DIRECTOR)

IRRIGATION SECTOR(DIRECTOR)

MINISTRY OF WATER AND IRRIGATION

IRRIGATED CROP PRODUCTION, OPERATION AND MAINTENANCE AND TECHNOLOGY

DISSEMINATION DIVISION(ASSIST.. DIRECTOR)

IRRIGATION OPERATION AND

MAINTENANCE AND DOCUMENTATION

SECTION(HEAD)

IRRIGATION PLANNING AND

DESIGN SECTION(HEAD)

DISTRICT IRRIGATION

OFFICES

WATER SECTOR

IRRIGATION INFRASTRUCTURE

DEVELOPMENT DIVISION(ASSIST. DIRECTOR)

ORGANIZATIONAL STRUCTURE – KILIMANJARO ZONAL IRRIGATION AND

TECHNICAL SERVICES UNIT

ASSISTANT ZONAL IRRIGATION

ENGINEER

WORKSHOP AND

MACHINERY MAITENANCE (HEAD

OF SECTION)

SURVEY AND DESIGN

(HEAD OF SECTION)

CONSTRUCTION, SUPERVISION

AND FOLLOW-UP

(HEAD OF SECTION)

SOILS, AGRONOMY AND

DOCUMENTATION

(HEAD OF SECTION)

ACCOUNTS

(Accoutants)

PROCUREMENT

(Supplies Officers)

SURVEY

(Surveyor)

DESIGN

(Engineer)

SOILS

(Soil Scientist)

AGRONOMY

(Agronomist)

DOCUMENTATION

(Documentalist)

CONSTRUCTION AND

SUPERVISION

(Engineer)

FOLLOWUP OF OPERATION AND

MAINTENANCE

(Engineer / Agronomist)

FINANCE AND

ADMINISTRATION

ACCOUNTS AND

PROCUREMENT

(HEAD OF SECTION)

REGIONAL IRRIGATION

OFFICE

(Irrigation Engieer / Officer)

DISTRICT IRRIGATION

OFFICE

(Irrigation Engieer / Officer)

ZONAL IRRIGATION AND TECHNICAL SERVICES UNIT

(ZONAL IRRIGATION ENGINEER)

• Role of the Zonal Irrigation and Technical Services Units:– Assist districts in identification of potential areas

for irrigation development;– Conduct topographical surveys or supervise

survey work whenever implemented by private surveyors;

– Assist districts to develop plans and designs of irrigation schemes and prepare tender documents for District Tender Boards;

– Assist districts in the process of tendering of works and procurement of facilities;

– Assist districts in supervision of contracts;

– Conduct awareness seminars to district staff and facilitate district teams to organize awareness seminars and workshops to farmers;

– Assist in the arrangement of training for various stakeholders;

– Assist in the commissioning of completed irrigation schemes;

– Selection of dam sites and design dams for construction;

– Assist districts in monitoring production in completed irrigation schemes;

– Assist districts in the preparation of sub-component budgets; and

– Preparation and submission to BTC of compiled sub-component budget, quarterly and annual Reports.

Some important activities in hand1.0 Rehabilitation of Makeresho Irrigation

Scheme (2009/10…..)2.0 Rehabilitation of Mandaka Mnono

Irrigation Scheme (2009/10…..)3.0 Kivulini Irrigation Scheme (2009/10…..)4.0 Mbuganyekundu Irrigation scheme (2009/10…..)

Makeresho headworks completing sluice gate and intake gate

• Diversion works for Makeresho headworks construction

Makeresho main Canal construction

2.0 Mandaka Mnono Irrigation Scheme

Concrete block lining for mandaka Mnono MC

Construction of Flume for Mandaka Mnono MC

3.0 Kivulini Irrigation Scheme

Kivulini Main canal lining with concrete blocks

Cattle trough for livestock

4.0 Mbuganyekundu Irrigation Scheme– Spate Irrigation

• Flood dyke construction to protect the floods entering the scheme

Baray River during floods

Main Canal Check drop structure

Division structure

Harvested Onions on bags

• Onion harvesting parking in 10 kg bags ready for export

DIVERSIFICATION OF SPATE IRRIGATION

Use of harvested crop leftover for livestock feeding

Stock piling maize leftover after harvest storing for future consumption

• Truck carrying maize leftover for stockpiling

• Stockpiling maize leftover for livestock consumption during dry season

• Hays of beans leftover for livestock which are said to have high nutrients

Naming’ongo Irrigation scheme one of typical Spate Irrigation

scheme

• Sketch of headwork design

Newly completed headwork with a bridge

Trash Rack

Semi Automatic Flood Flushing

gates

• Tree logs in front of upstream apron after flooding

• Downstream of headworks the part with semi-automatic Flood Flushing gates

Semi-Automatic Flood flushing gates

• Downstream of headwork/bridge

Solid wear part

Semi-automatic Flood Flushing gates

Chain saw cutting logs of trees

Cut down tree logs using chain

saw

• Beneficiaries cutting down the tree logs using chain saw

Cut down tree logs using chain

saw

OTHER IMPORTANT ASPECT OF SPATE IRRIGATIONespecially improvement of Post Harvest Losses which is estimated to be 40%

• Traditional wooden stick storage facility

Inlet /outlet

• Storage facility made of soil bricks with capacity 1000 kgs

Inlet

Outlet with a pad lock

• Storage facility made of burnt bricks with capacity 2,000 kgs

Outlet with a pad lock

Inlet

• Storage facility made of cement paste with capacity 1000 kgs

inlet

Outlet with a pad lock

Improved grain storage tanks with capacity of 50 tons

Outlet with a pad lock

Inlet

Other coupled activities with regard to Spate Irrigation and adaption to climate change

a) Water saving technologies b) Environmental protection by minimizing use of firewood in (1) Improved cooking stoves (2) Use of Rice husks to burn bricks

a) Rainwater harvesting tank from roofs with capacity of 16,000 lts

Outlet with a pad lock

Inlet pipe from roof gutters

• Drip irrigation – Bucket kit

lock20 lt bucket

Lateral pipes

• Drip irrigation family Kit

200 lt water storage tank

Filter

Laterals

• Drip irrigation at agricultural show

Laterals

Agricultural Farmers show on every 8th of August of each year. Demonstration of water saving technologies

200 lt water storage tank

200 lt water storage tank

Use of Tridle pumps for irrigation

Treadle pump

b) Improved Stove it uses only quarter of fire wood

Collecting rice husks from paddy milling machines

Using rice husks to burn bricks

Using rice husks to burn bricks

Participation in International Workshop on Mainstreaming Spate irrigation in Higher Education will be fruitful if at the end of workshop we will be able to produce curriculum which can put the acquired knowledge into practice and solve people’s problem at grassroot level.

I can quote former United Nation Secretary General Mr. Koffi Annan who once said that in ‘Africa Knowledge is not lacking. What is lacking is to put the Knowledge into practice”

Materials I brought with me which can be useful to workshop1) Development of Standard scheme design document for Rainwater Harvesting Based Irrigation2) Tanzanian National Irrigation Policy

3) Arusha Technical College (ATC) Degree in Irrigation curriculum

Opinions expressed during my presentation does not necessarily reflects those from Ministry of Water and

Irrigation

By Eng. Kamil Aron Nkya255 754 496 805

kamilnkya@yahoo.com