““Drop” of Drop” of LifeLife

Why this project ?

St. Sebastian Convent is located in coastal area of the western province. Students are facing problem with shortage of drinking water. In this area water supply is only twice in a week. School didn't have proper storage for water. Though the school has tubewell students were facing problem with drinking water because the ground water in the area is salty. This Water is also not good for cooking, drinking, washing clothes, agriculture etc..

We are …..

Group “Parakkramabahu” Nimali Edirimanna Saman Alvis Shanthi Perera Malithi Soyza

In this project we role played as committee members of “ Lanka Rain Water Harvesting Forum”

Selection and Visit

Al Hidaya Tamil Collage at Hambanthota. School is located in one of the gruffest areas in Sri Lanka.

Al Azar Muslim Collage at Putlam. This School also located in other gruffest area in Sri Lanka.

We selected two villages to conduct experiment and find the rain fall in the arid area. They are

Location…Dry ZoneWet Zone

Sear Zone Al Azar M.C. Putlam

Al Hidaya T. C. Hambanthota

Major Water Resources are

• Kelani ganga (2292 km²)

• Kalu ganga (2719 km²)

• Maha oya (1528 km²)

• Attanagalla oya (736 km²),

• Gin ganga (932 km²),

• Nilwala ganga (971 km²)

• Bentota ganga (629 km²).

• 15000 tube-wells.

500 L

Rain water Collecting System (RWCS)

We developed RWCS using GI sheets to measure the rain fall in the selected villages. It covers 1 square unit and 6 inches in height. A down pipe was arranged to collect the water from collector to fill the tank. RWCS was placed at an open area near the grade 7 class room in the AlHidaya Tamil Collage and Al Azar Muslim Collage .

Rain Gauge Meter

RWCS

Plan of action Meet the selected village school students and

request them to cooperate and measure the rainfall in their area.

Place “Rain Water Collecting System” at their School and demonstrate how to collect data.

Collect the data about rainfall for one month from the schools every Friday via E mail and chat.

Prepare a brochure, conduct campaign and organise exhibition to create awareness among community people.

Water collected…

 Week

1week 2

Week 3

Week 4

Total

Hamban thota

47 L 78 L 66 L 30 L 221 L

Putlam 26 L 42 L 24 L 72 L 164 L

 Week

1week 2 Week 3

Week 4

Total

Hambanthota 23mm 34mm 29mm 12mm

98mm

Putlam 12mm 23mm 11mm 18mm64m

m

Recorded Rainfall - May

0

5

10

15

20

25

30

35

Hambanthota Putlam

1st Week

2nd Week

3rd Week

4th Week

Quick View

Rainfall in Srilanka

Season

The South & South West

The Central Hill Country

The Northeast

Avg. Temp

Avg. Rainfall

Avg. Temp

Avg. Rainfall

Avg. Temp

Avg. Rainfall

Dry Season ( Dec –April)

22-300C 136mm 08-210C 92mm 26-330C 63mm

Monsoon Season ( May-August)

25-290C 210mm 13-190C 210mm 25-280C 278mm

Inter-Monsoon Season (Sept – November)

24-290C 224mm 11-200C 240mm

After collecting data from the schools we have conducted research using internet to find information about rainfall and temperature in Srilanka. It helped us to calculate quantity of rainfall available for harvesting

Roof as a Collector

Roof Area in Sq.m

Quantity of rainfall available for harvesting (litres)

50 11,050

100 22,100

500 110,500

1000 221,000

We surprised to see good rainfall during all seasons. We also felt that the easy way to harvest the rain water is using the roof as a Collector. We did simple calculation to find quantity Of rainfall available for harvesting with average rainfall of 24.5mm

Roof

Roof Guttering

Storage Vessel

Outlet

Over flow

Proposed Plan for Rain Water Harvesting

Suggestions Govt. and NGO should create awareness

among community about water conservation methods.

Banks should encourage to develop Rain Water Harvesting by providing loans to construct.

Govt. should encourage people by providing subsidy

Govt. should act as a role model by developing rain water harvesting system (RWHS) for all offices.

Municipality should insist on RWHS for new approval of buildings.

Each individual should feel it as his responsibility to conserve water by RWHS

Outcome of the project

The School Management was highly motivated and very happy with project " Drop of Life". They also funded to install "Rain Water Harvesting System" in the school.

References Students & teachers of

Al Hidaya Tamil Collage - Hambanthota Al Azar Muslim Collage -Putlam

National Water and Drainage board officers Our Principal, Teachers and Parents http://www.rainwaterharvesting.org/methods/methods.htm http://www.tn.gov.in/dtp/rainwater.htm http://www.rainwaterharvesting.com/ http://akash-ganga-rwh.com/RWH/WaterHarvesting.html http://www.asiahotels.com/weather/

Sri_Lanka.asp#northeast

“Never let a drop of water flow to the sea without using”

King Parakkramabahu the Great

Kingdom of Polonnaruwa

Thank You