A Rainwater Harvesting (RWH) Demonstration System. [Sainte-Lucie]

  • Création:
  • Mise à jour:
  • Compilateur:
  • Rédacteur:
  • Examinateur:

Entité concernée: Saint Lucia

Précisez si la technologie indiquée dans le modèle, ou une partie de cette technologie, est protégée par des droits de propriété intellectuelle: Non

État complet: 91%

Informations générales

Informations générales

Titre des bonnes pratiques:

A Rainwater Harvesting (RWH) Demonstration System.



Entité concernée:

Saint Lucia

Droits de propriété intellectuelle

Précisez si la technologie indiquée dans le modèle, ou une partie de cette technologie, est protégée par des droits de propriété intellectuelle:



Utilisation courante des terres sur le site

  • Cultures
  • Pâturages
  • Terrains forestiers
  • Habitat humain

Contribution aux mesures de la DDTS

  • Atténuation
  • Adaptation
  • Adaptation

Liens avec les autres thèmes relatifs aux meilleures pratiques

  • Renforcement des capacités et sensibilisation
  • Suivi et évaluation/recherche de la gestion durable des terres et de la DDTS


Section 1. Contexte de la meilleure pratique : conditions du cadre (environnement naturel et humain)

Brève description de la meilleure pratique

A Rainwater Harvesting (RWH) Demonstration System
which will promote a simple and low-cost water supply technology
which can provide water of an acceptable quality. This would complement
the current water scheme and ensure the reliability of
water supply within the Fond D’or watershed, particularly during
the dry season and periods of induced and natural drought. This
activity would include needs assessments; training of contractors;
construction of 20 RWH units at homes, schools, community centres,
health centres, sporting facilities, etc; community awareness
exercises; and an evaluation of the economic and other major
impacts on demonstration households|


Fond D'Or Watershed

Si le lieu a des limites clairement définies, spécifier son extension en hectare:


Estimation de la population vivant sur le site:


Brève description de l’environnement naturel du site

The area is characterised by hills and valleys,ranging in topography of 0-50 degrees.|
Climatic predisposition of the area - Subtropical life
zone.The Fond D’Or watershed is the second largest in St. Lucia and comprises
approximately 9860 acres or 3990 hectares. Approximately 23% of the watershed
is under protection - Government Forest Reserves which are located in the upper
watershed. The Fond D’Or watershed is among the seven (7) of the 37
watersheds in St. Lucia that are an important source of water supply. The most
extensive area of natural forest is located along the northern
According to the land capability map of St. Lucia (OAS 1988) only 11.3% of and in the watershed falls under productive or prime agricultural land classes
(I, II, III).|

Conditions socio-économiques dominantes des personnes vivant sur ou à proximité du site

The control of land by a single or few land owners dates back to the plantation era. There have been some
interventions including the MVDP project which to sought to reallocate land to
the local community for farming purposes while at the same time maintaining
the commercial agricultural core. The project also targeted the housing sector by making available sites and service schemes in settlement expansion areas and regularized as far as possible existing spontaneous settlement areas.
The area benefits from a strong economic base in agriculture.There are close
to1000 commercial banana farmers in the District of which the majority are
located in the Fond D’Or watershed. The community has some experience in agro processing - the well known Aunt Lucie processing plant was located in Grande Ravine.
The strong spirit of togetherness of the people of the watershed notwithstanding their geographic location within 10 settlements was seen as a strength. This is manifested in the existence of several local community based groups and organizations historically and currently.Unemployment in the watershed is high especially among the youth and
outside agriculture and the distributive trades; while other sectors are at the rudimentary stage of development.

Sur la base de quel critère/indicateur(s) (sans relation avec la stratégie) la pratique proposée et technologie correspondante ont-elles été considérées comme « meilleures »?


Section 2. Problèmes abordés (causes directes et indirectes) et objectifs de la meilleure pratique

Principaux problèmes abordés par la meilleure pratique

The rational of revisiting this traditional system has to do with the reduction of the general quality and quantity of water present within rivers and streams,within the boundries of the Fond D'Or Watershed.Also,this practice,assists in water storage during periods of drought.|

Décrivez les principaux problèmes liés à la dégradation des terres abordés par la meilleure pratique

Drought and inadequate potable water supply

Précisez les objectifs de la meilleure pratique

A Rainwater Harvesting Study was conducted and implemented by the IWCAM project and its design and recommendations implemented. The objectives of this system is to serve as a back up to augment household water supply and to safeguard  the health of community members, within the project area. |

Section 3. Activités

Brève description des principales activités, par objectif

Selecting households to implement rainwater harvesting system and establish system for demonstration purposes.
A rainwater harvesting Study was conducted within the watershed to determine feasibility of establishing system within the project area.||
Public awareness and sensitisation activities were conducted to involve and help improve on the knowledge base of community members.
Training activities were conducted to increase capacity of the members of the community,in terms of establishing the system.|

Brève description et caractéristiques techniques de la technologie

It consist primarily of a guttering, storage tank and fuel pump.The basic operations of this system are as follows;
(a)When rain falls the water is diverted from the roof to the guttering.
(b)After diversion to the guttering the initial flow is flushed for debris etc.
(c)After lushing, the water then flows into the storage tank .
(d)The water is then treated with chlorine , then pumped as needed, throughout the household.

Section 4. Institutions/acteurs impliqués (collaboration, participation, rôle des parties prenantes)

Nom et adresse de l’institution développant la technologie

IWCAM Demonstration Project;Saint Lucia.|Mabouya Valley,Dennery.

La technologie a-t-elle été développée en partenariat ?


Dressez la liste des partenaires :

Fond D'Or Watershed Management Committee.(FDWMC)

Précisez le cadre de promotion de la technologie

  • Initiative nationale – gouvernementale
  • Initiative basée sur un programme/projet

La participation des parties prenantes locales, y compris des OSC, a-t-elle été recherchée au cours du développement de la technologie ?


Dressez la liste des parties prenantes locales:

Fond D'Or Watershed Management Committee. (FDWMC)|Local Building Contractors.|Ministry of Health.(Health Centres)|Local Community Groups.|Ministry of Education.(Local Schools)|Ministry of Sports.

Précisez le rôle des parties prenantes ci-dessus dans la conception, l’introduction, l’utilisation et la maintenance de la technologie, le cas échéant.

The local contractors were trained to establish these systems at various locations within the watershed.(Homes, schools, community centres,health centres, sporting facilities, etc).The Fond D'Or Watershed Management Committee was integrally involved in the development,introduction and implementation of the system.The other stakeholders,Schools, Health Centres etc,are beneficiaries of the system,as the RWH system were established within their compounds for use.Also,these beneficiaries may serve as an important source of information, as regards its use and functions. |

La population vivant sur ou à proximité du site a-t-elle été impliquée dans le développement de la technologie?


Par quels moyens?
  • Consultation
  • Approches participatives


Section 5. Contribution à l’impact

Décrivez les impacts sur site (les deux principaux impacts par catégorie)

Although this is not a new idea, because traditionally St. Lucians have always collected rainwater, especially in remote areas, where it was difficult to obtain pipe-bourne water, the system has been modified.|

Décrivez les deux principaux impacts hors site (dans les environs)

The benefit of having an alternative source of water for domestic use can improve on the socio-economic living conditions of people within the community.
This system can help to ease the pressure on demands for potable water from reservoirs by residents,thus making more water available for additional developmental projects.|

Impact sur la biodiversité et le changement climatique


As I mentioned earlier,this practice is important,especially as it relates to periods of drought, where, whenever rainfall events occur, water can be captured and stored for household use. |
This best practice has a positive impact in relation to Climate Change adaptation.Due to this practice,the effects of drought is mitigated to some extent,since this provides an alternative source of water for various domestic requirements. |
This practice may not contrtibute to the reversal or improvement of the negative impacts of climate change because it is basically adaptive by nature.

Une analyse coût-avantage a-t-elle été réalisée?

Une analyse coût-avantage a-t-elle été réalisée? :


Section 6. Adoption et caractère transposable

La technologie a-t-elle été diffusée/introduite sur d’autres sites?

La technologie a-t-elle été diffusée/introduite sur d’autres sites? :


Pouvez-vous identifier les trois principales conditions ayant favorisé la réussite de la meilleure pratique/technologie présentée?

The water quality of the Fond D’Or River and consequently Fond D’Or Bay is
a serious concern. The IWCAM project over the past 2 years has set up water
quality stations along the rivers in the Mabouya Valley. Most are seriously
• Declare the area around the new proposed Intake a forest reserve in accordance
with the Forest Soil and Water Conservation Act, to safeguard water supply
and integrity.
The adequate supply of quality potable water is a chronic and serious problem
in the Fond D’Or watershed, notwithstanding the size of the watershed
(second largest in the island) and low population density. Water supply from
the current system lags behind the current demand. Based on the population
of 10,000 people the current water demand is 60 litres per person or 6.91l/s.|
A recent study conducted under the IWCAM project by Massachusetts
Institute of Technology (2008) revealed that the watershed has the capacity to
supply current and future water demands (current – 25 years) but not via the
current supply system. A major new intake in a location of adequate supply,
along with supporting infrastructure, is proposed at Tournesse (tributary of
Riviere Du Mabouya).
(IWCAM 2008)
Source: IWCAM Water Supply Study|


Selon vous, la meilleure pratique/technologie proposée peut-elle reproduite, y compris avec un certain degré d’adaptation?


Si oui, à quel niveau?
  • Local
  • Sous-national
  • National
  • Sous-régional
  • Régional

Section 7. Leçons tirées

Liées aux ressources humaines

The system does not require an excessive number of human resources to establish and maintain.

Liées aux aspects financiers

. This system is practical and reliable once there is rainfall and the equipment continues to function properly. Also, in the long run, it can reduce on water expenses for households,therefor cost efficient.|

Liées aux aspects techniques

The system is very easy to establish and can be replicated successfully within other areas with very little difficulties.

Section 8. Questions supplémentaires de l'étape 1

Questions supplémentaires de l'étape 1

Commitment date: 38355.0