Integrated runoff harvesting system
Setting up the infrastructure involves dividing the land in the valley into raised beds of ±10 m x 20 m which are separated by furrows, acting as drainage channels. Below the furrows is a pond. These furrows, however, can also fulfil the opposite role – distributing runoff water from upslope in the valley bottom if required. A diversion channel has been constructed to guide runoff from a track towards the valley. The channel is 0.5 m deep, 1 m wide, over 100 m in length and with a gradient of 0.5% - 1.0%. It is estimated that the ratio of catchment to cultivated area is 10:1. The channel is left open to divert runoff in times of shortage (though, naturally, as with any rainwater harvesting system, there has to be rain locally before it can be harvested). This water then can be held by the furrows whose outlet can be blocked. Citrus fruits (oranges) and mangoes are planted on the beds, and intercropped with annuals.
Purpose of the Technology: The purpose is production of cash crops, based on reclamation of land and control of concentrated runoff. The impact is achieved through a flexible method
of drainage/water harvesting, which helps ensure suitable moisture conditions for growth.
Establishment / maintenance activities and inputs: The main maintenance aspect is clearing inlets, channels and removing vegetation, using common household hand tools such as spades and hoes.
Natural / human environment: The technology is situated in a valley near a swamp. It consists of growing both annual and perennial crops throught the year. The farm is located in a semi-arid area. The soil is sandy loam and shallow.
Lugar: Katakwi, Katakwi, Uganda
No. de sitios de Tecnología analizados:
Difusión de la Tecnología: distribuida parejamente sobre un área (approx. 1-10 km2)
¿En un área de protección permanente?:
Fecha de la implementación: hace menos de 10 años (recientemente)
Tipo de introducción
| Especifique insumo | Unidad | Cantidad | Costos por unidad (Uganda shillings) | Costos totales por insumo (Uganda shillings) | % de los costos cubiertos por los usuarios de las tierras |
| Mano de obra | |||||
| Labour | ha | 1,0 | 270,0 | 270,0 | 100,0 |
| Equipo | |||||
| Tools | ha | 1,0 | 42,0 | 42,0 | 100,0 |
| Material para plantas | |||||
| Seeds | ha | 1,0 | 23,0 | 23,0 | 100,0 |
| Fertilizantes y biocidas | |||||
| Compost manure | ha | 1,0 | 10,0 | 10,0 | 100,0 |
| Costos totales para establecer la Tecnología | 345.0 | ||||
| Costos totales para establecer la Tecnología en USD | 0.34 | ||||
| Especifique insumo | Unidad | Cantidad | Costos por unidad (Uganda shillings) | Costos totales por insumo (Uganda shillings) | % de los costos cubiertos por los usuarios de las tierras |
| Mano de obra | |||||
| Labour | ha | 1,0 | 340,0 | 340,0 | 100,0 |
| Equipo | |||||
| Tools | ha | 1,0 | 315,0 | 315,0 | 100,0 |
| Material para plantas | |||||
| Seeds | ha | 1,0 | 71,0 | 71,0 | 100,0 |
| Indique los costos totales para mantenecer la Tecnología | 726.0 | ||||
| Costos totales para mantener la Tecnología en USD | 0.73 | ||||
Negative: Can lead to waterlogging
