- Distribution of cultivated area in Nepal
S.N |
Types |
Area (‘000 ha) |
1 |
Cultivated area |
2641 |
2 |
Irrigable area(including forest area) |
2178 |
3 |
Irrigable area(Excluding forest area) |
1778 |
4 |
Irrigation infrastructure developed |
1091 |
5 |
Actual irrigation |
768 |
2. Arable area expansion (1000 ha)
S.N |
Items |
1998 |
2003 |
2008 |
1. |
Total irrigated area |
768 |
968 |
1190 |
2. |
Year round irrigation |
418 |
638 |
890 |
3. |
Monsoon irrigation |
350 |
330 |
300 |
Forms of irrigation
- Surface versus ground irrigation
- Both surface and ground water (shallow tube wells)-Terai
- Rivers, streams and natural springs-Hills
- Hills Vs Terai
Hills |
Terai |
Equity of development |
Public sector is more focus and powerful in Nepal. |
Cost of development is very high. |
Development cost lower |
Regional development |
Potential for development |
- Large Vs small projects
Large |
Small |
Capital intensive |
Labor intensive |
Long gestation period |
Short gestation period |
Create high employment opportunities |
Single and simple design |
Estimation of water demand
- Cropping patterns: Before and after
- Crop income: I = f(y)
- Farm budget
- Market prices are used for determining the income from crop yield
- Water requirement for crop: the additional water should be supplied until marginal physical product (MPP) is reduced which is economically profitable.
- MPP = Marginal benefits/Marginal costs
Criteria for water charge
- Cost of construction
- Ability of Farmers
- Benefits derived from irrigation
- Running cost