1.2 Detalles de contacto de las personas de referencia e instituciones involucradas en la evaluación y la documentación de la Tecnología

Nombre del proyecto que financió la documentación/ evaluación de la Tecnología (si fuera relevante)

People and Resource Dynamics Project, Nepal (PARDYP)

Nombre de la(s) institución(es) que facilitaron la documentación/ evaluación de la Tecnología (si fuera relevante)

ICIMOD International Centre for Integrated Mountain Development (ICIMOD) - Nepal

1.3 Condiciones referidas al uso de datos documentados mediante WOCAT

¿Cuándo se compilaron los datos (en el campo)?

15/09/2006

El compilador y la/s persona(s) de referencia claves aceptan las condiciones acerca del uso de los datos documentados mediante WOCAT:

Sí

1.5 Referencia al (los) Cuestionario(s) de Enfoques MST

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Structural and vegetative measures to improve the quality of drinking water contaminated due to poor sanitation and seepage

2.2 Descripción detallada de la Tecnología

Descripción:

This technology combines structural and vegetative measures to improve the quality of drinking water in an open spring. The quality of water was deteriorating due to poor sanitation and seepage around the spring. The spring was located near to Dhotra village at Barbot sub-settlement, Kabhrepalanchok district. About five households depended on the spring for their drinking water supplies with a further
10 using it regularly and 10-15 using it occasionally during the dry season.
The main purpose of implementing the technology was to improve the quality of drinking water in the spring by preventing it from being contaminated by surface runoff during the rainy season. This technology has long been implemented across Nepal’s midhills. In this case a development project (PARDYP) mobilised the users and provided them with technical and material support to make the improvements.
A spring user group was formed. With project help, it built a walled structure (a spring box) over the spring and check dams around the spring, and planted grasses around the spring box and trees in the catchment. These measures prevented the direct flow of surface water into the spring thus reducing contamination and turbidity. Users built a 1.8m long, 1m wide and 1.5m high spring box with a zinc sheeted roof. Check dams were built across the surrounding gullies and rills. A main 2.5m long, 0.5m wide, and 1m high check dam was constructed near the source to prevent surface runoff from entering the spring. A drainage channel was made to drain off wastewater. Vetiver grass seedlings were planted around the spring box and trees were planted in the adjoining catchment. These activities were carried out at the beginning of the rainy season.
This technology is simple and durable and the only maintenance needed is to keep the surroundings clean and to repair any damage.
The case study area receives about 1200 mm of annual precipitation of which about 80% occurs during the monsoon season (June to September). The area mostly has red soils which are highly weathered and, if not managed properly, are very susceptible to erosive processes.

2.3 Fotografías de la Tecnología

2.5 País/ región/ lugares donde la Tecnología fue aplicada y que se hallan comprendidos por esta evaluación

2.6 Fecha de la implementación

Si no se conoce el año preciso, indique la fecha aproximada:

• hace más de 50 años atrás (tradicional)

2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• mediante proyectos/ intervenciones externas

Comentarios (tipo de proyecto, etc.):

Local community, with the contribution from individual community members or from external support have been implementing since generations. In this particular case project mobilized the spring users community and assisted them by providing technical and material support during programme implementing period.

3.1 Propósito(s) principal(es) de la Tecnología MST

• Improve water quality

3.2 Tipo(s) actuales de uso de la tierra donde se aplica la Tecnología

Comentarios:

Major land use problems (compiler’s opinion): High pressure on limited land resources due to overuse of crop, forest, and grazing lands; increased inputs of agrochemicals which will lead to the deterioration of drinking water quantity and quality

Major land use problems (land users’ perception): Water quality deterioration resulting from poor sanitation

Constraints of wastelands / deserts / glaciers / swamps: private land-abondent by village elite, communal land-open grazing

3.3 Información adicional sobre el uso de tierras

Número de temporadas de cultivo por año:

• 3

Especifique:

Longest growing period in days: 150; Longest growing period from month to month: Jun - Oct; Second longest growing period in days: 120; Second longest growing period from month to month: Nov - Feb

3.4 Grupo MST al que pertenece la Tecnología

• manejo de agua superficial (manantial, río, lagos, mar):

3.5 Difusión de la Tecnología

Especifique la difusión de la Tecnología:

• distribuida parejamente sobre un área

Si la tecnología se halla difundida homogéneamente en un área, indique el área aproximada que cubre:

• < 0.1 km2 (10 ha)

3.6 Medidas MST que componen la Tecnología

Comentarios:

Main measures: vegetative measures, structural measures

Type of vegetative measures: scattered / dispersed

3.7 Principales tipos de degradación del suelo encarados con la Tecnología

Comentarios:

Main causes of degradation: overgrazing (uncontrolled access to grazing land), other natural causes (avalanches, volcanic eruptions, mud flows, highly susceptible natural resources, extreme topography, etc.) specify (concentrated runoff during rainy season), education, access to knowledge and support services (lack of knowledge - water quality treatment)

Secondary causes of degradation: deforestation / removal of natural vegetation (incl. forest fires) (uncontrolled access to forest land), poverty / wealth (lack of captial - conservation activities)

3.8 Prevención, reducción o restauración de la degradación del suelo

Especifique la meta de la Tecnología con relación a la degradación de la tierra:

• reducir la degradación del suelo

4.1 Dibujo técnico de la Tecnología

4.2 Especificaciones técnicas/ explicaciones del dibujo técnico

Structural and vegetative measures applied to improvewater quality of spring

Location: Barbot Dhotra. Kabhrepalanchowk district

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: control of concentrated runoff: impede / retard, improvement of ground cover

Secondary technical functions: increase / maintain water stored in soil

Scattered / dispersed
Vegetative material: T : trees / shrubs, G : grass

Trees/ shrubs species: Michelia champaca

Grass species: Vetiveria lawsoni

Structural measure: spring box wall
Material: concrete
Height of bunds/banks/others (m): 1.5
Width of bunds/banks/others (m): 1.02
Length of bunds/banks/others (m): 1.89

Structural measure: check dams
Height of bunds/banks/others (m): 1
Width of bunds/banks/others (m): 0.5
Length of bunds/banks/others (m): 2.5

Structural measure: cut-off drain
Material: Stone
Depth of ditches/pits/dams (m): 0.2
Width of ditches/pits/dams (m): 0.25
Length of ditches/pits/dams (m): 3

Construction material (stone): locally available

Construction material (concrete): cement, sand, brick

4.3 Información general sobre el cálculo de insumos y costos

Especifique cómo se calcularon los costos e insumos:

• por unidad de Tecnología

Especifique la moneda usada para calcular costos:

• dólares americanos

4.4 Actividades de establecimiento

	Actividad	Tipo de medida	Momento
1.	Planting vetiver grass around the spring box	Vegetativas	beginning of rainy season
2.	Planting tree species in the catchment	Vegetativas	beginning of rainy season
3.	Building of check dams to divert stream and gully runoff water	Estructurales	start of the rainy season
4.	Buildingof the spring box	Estructurales	start of the rainy season
5.	Construction of concrete floor in front of spring box	Estructurales	start of the rainy season
6.	Construction of drainage channel	Estructurales	start of the rainy season

4.5 Costos e insumos necesarios para el establecimiento

	Especifique insumo	Unidad	Cantidad	Costos por unidad	Costos totales por insumo	% de los costos cubiertos por los usuarios de las tierras
Mano de obra	Building spring box and planting trees	Persons/day	69,0	1,6	110,4	80,0
Material para plantas	Grass seedlings	unit	1,0	4,0	4,0
Material de construcción	Cement	unit	1,0	44,0	44,0
Material de construcción	Gravel / sand	unit	1,0	55,0	55,0	100,0
Material de construcción	Bricks	unit	1,0	188,0	188,0
Material de construcción	Empty sacks	unit	1,0	5,0	5,0
Material de construcción	Tinc sheet	unit	1,0	16,0	16,0
Material de construcción	Steel wire	unit	1,0	1,0	1,0
Material de construcción	Transportation	unit	1,0	10,0	10,0	15,0
Costos totales para establecer la Tecnología					433,4

Si el usuario de la tierra no cubrió el 100% de los costos, indique quién financió el resto del costo:

PARDYP and District Development Committee

Comentarios:

Duration of establishment phase: 12 month(s)

4.6 Actividades de establecimiento/ recurrentes

	Actividad	Tipo de medida	Momento/ frequencia
1.	replacement/ gap filling with new tree seedings	Vegetativas	/as required
2.	maintaining height of the planted grass	Vegetativas	/as required
3.	Cleaning spring box surroundings	Estructurales	as per need
4.	Maintenance of wall/ floor against damage	Estructurales	as per need
5.	Maintenance of check dam against damage	Estructurales	as per need

4.7 Costos e insumos necesarios para actividades de mantenimiento/ recurrentes (por año)

	Especifique insumo	Unidad	Cantidad	Costos por unidad	Costos totales por insumo	% de los costos cubiertos por los usuarios de las tierras
Mano de obra	Maintaining springbox	Persons/day	2,0	1,6	3,2	100,0
Indique los costos totales para mantenecer la Tecnología					3,2

Comentarios:

Machinery/ tools: hoe,spade, shovel, nails, hammer, pliers, trowel, steel pan bucket, and jug

The cost is only for unit technology, it can not be extrapolated to hector basis, as in 2006.

4.8 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

Material cost was comparatively high followed by labor cost. For this technology several actors contributed. The land users contributed 61 percent, District Development Committee contributed 26 percent and PARDYP contributed 13 percent, and the department of forest and PARDYP regional coordinator contributed by providing planting materials( vetiver).

5.1 Clima

5.2 Topografía

Comentarios y especificaciones adicionales sobre topografía :

Altitudinal zone: 900 m a.s.l.

5.3 Suelos

Si se halla disponible, adjunte una descripción completa de los suelos o especifique la información disponible, por ej., tipo de suelo, pH/ acidez de suelo, capacidad de intercambio catiónico, nitrógeno, salinidad, etc. :

Soil depth on average: Variable

Soil texture: Red soils with high clay content

Soil fertility is very low

Soil drainage / infiltration is medium

Soil water storage capacity is very low

5.4 Disponibilidad y calidad de agua

Comentarios y especificaciones adicionales sobre calidad y cantidad de agua:

Water quality (untreated): More contamination during monsoon season (June- September), source: mainly natural springs

5.6 Las características de los usuarios de la tierra que aplican la Tecnología

Indique otras características relevantes de los usuarios de las tierras:

Land users applying the Technology are mainly common / average land users

Population density: 200-500 persons/km2

Annual population growth: 2% - 3%

15% of the land users are average wealthy and own 35% of the land.
85% of the land users are poor and own 65% of the land.

Off-farm income specification: In most farm households, off-farm income plays at least a minor and increasingly a major role. Occasional opportunities for off-farm income present themselves in the form of daily
labour wages. Some households’ members receive regular salaries, whilst an increasing number of Nepalis are
working in India, the Middle East, Malaysia, and elsewhere and sending remittance incomes home.

5.7 Área promedio de la tierra que pertenece a o es arrendada por usuarios de tierra que aplican la Tecnología

5.8 Tenencia de tierra, uso de tierra y derechos de uso de agua

Tenencia de tierra:

• estado
• individual, con título

Derechos de uso de tierra:

• comunitarios (organizado)

Derechos de uso de agua:

• acceso abierto (no organizado)

6.1 Impactos in situ demostrados por la Tecnología

Impactos socioeconómicos

Ingreso y costos

Impactos socioculturales

Impactos ecológicos

Ciclo de agua/ escurrimiento de sedimento

Suelo

6.3 Exposición y sensibilidad de la Tecnología al cambio climático gradual y a extremos relacionados al clima/ desastres (desde la percepción de los usuarios de tierras)

Cambio climático gradual

Cambio climático gradual

	Estación	tipo de cambios climáticos/ climas extremos	¿Cómo es que la tecnología soporta esto?
temperatura anual		incrementó	bien

Extremos (desastres) relacionados al clima

Desastres climatológicos:

	¿Cómo es que la tecnología soporta esto?
tormenta de lluvia local	no muy bien
tormenta de viento	bien

Desastres climatológicos

	¿Cómo es que la tecnología soporta esto?
sequía	no muy bien

Desastres hidrológicos

	¿Cómo es que la tecnología soporta esto?
inundación general (río)	no muy bien

Otras consecuencias relacionadas al clima

Otras consecuencias relacionadas al clima

	¿Cómo es que la tecnología soporta esto?
periodo reducido de crecimiento	bien

6.4 Análisis costo-beneficio

¿Cómo se comparan los beneficios con los costos de establecimiento (desde la perspectiva de los usuarios de tierra)?

¿Cómo se comparan los beneficios con los costos de mantenimiento/ recurrentes (desde la perspectiva de los usuarios de tierra)?

Comentarios:

Clean water is available immediately after only a little investment. Government and PARDYP support meant that the short-term benefit was positive. Without this support the short-term costs would equal the benefi ts.

6.5 Adopción de la Tecnología

• más de 50%

Si tiene la información disponible, cuantifique (número de hogares y/o área cubierta):

15 households in an area of 10 ha

De todos quienes adoptaron la Tecnología, ¿cuántos lo hicieron espontáneamente, es decir, sin recibir incentivos/ pagos materiales?

• 0-10%

Comentarios:

100% of land user families have adopted the Technology with external material support

15 land user families have adopted the Technology with external material support

Comments on acceptance with external material support: survey results

There is a moderate trend towards spontaneous adoption of the Technology

Comments on adoption trend: Local people with inadequate access to drinking water or whose source is contaminated are
likely to adopt the technology after raising the funds themselves.

6.7 Fuerzas/ ventajas/ oportunidades de la Tecnología

Fuerzas/ ventajas/ oportunidades desde la perspectiva del usuario de la tierra
Increased availability of drinking water has reduced women’s workload during the dry season. How can they be sustained / enhanced? Improve the technology by building a closed storage tank.

Fuerzas/ ventajas/ oportunidades desde la perspectiva del compilador o de otra persona de referencia clave
Water turbidity decreased from 23 nephelometric turbidity units (NTU) in August 2004 to 7 NTU in August 2005. How can they be sustained / enhanced? Encourage spring users to plant more multiple grasses and tree species around the catchment area
Faecal contamination decreased from 500 coliform formation units (CFU)/100 ml in August 2004 to 200 CFU/100 ml in August 2005. Similarly, the levels of ammonia (NH3) and nitrate (NO3 in the spring water have decreased (NH3 from 0.5 to 0 mg/l; and NO3 from 0.7 to 0.5 mg/l). Total hardness of spring water remained the same at 30 mg/l. How can they be sustained / enhanced? Regular maintenance, especially cleaning the surrounding area is needed; also need a clean pot for extracting the water.

6.8 Debilidades/ desventajas/ riesgos de la Tecnología y formas de sobreponerse a ellos

Debilidades/ desventajas/ riesgos desde la perspectiva del compilador o de otra persona de referencia clave	¿Cómo sobreponerse a ellas?
Coliform bacteria are still a problem	Treat the water using SODIS, boiling, fi lters, chlorination or other methods before drinking.
The water available during the pre-monsoon season is insufficient for the15 households, leading to conflicts; the water source can be contaminated from unclean water fetching pots.	The water in the spring box should be siphoned into a storage tank fi tted with an overfl ow mechanism,cleaning outlet, lockable cover, and taps. This would protect the water source from contamination from open access and improve the quality and availability of water. The amount available could be increased by tapping other spring sources.

7.2 Vínculos a las publicaciones disponibles

Título, autor, año, ISBN:

ICIMOD (2007) Good Practices in Watershed Management: Lessons Learned in the Mid Hills of Nepal. Kathmandu: ICIMOD

¿Dónde se halla disponible? ¿Costo?

ICIMOD