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Problem Statement:

The average volume of the dam during rainy seasons specifically is 35.53 million Liters. To test

the truth of this claim, the researchers gathered the average rainfall volume count of the months

of the rainy seasons, June to November, of the year 2013. The data that are gathered are as

follows respectively, in millions per liter: 26.05, 35.35, 64.8, 42.65, 19.05, and 6.4. Is the rainyseasons volume claim true?

Introduction:

The La Mesa Dam is one of the largest earth dams in the Philippines and part of the Angat-Ipo-

La Mesa water system that is managed by the Metropolitan Waterworks and Sewerage System.

The Manila Water treats the water collected in the dams reservoir on-site by the Maynilad

Water Services, and at the Balara Treatment Plant. Both water companies are private

concessionaires awarded by the Metropolitan Waterworks and Sewerage System, the

government agency in charge of water supply. During the rainy seasons, the average water level

is in between 79-79.3 meters that corresponds to the average volume of 33.53 in million liters.

The researchers would corroborate if this satisfies the average volume of the reservoir given by

the Manila Water in which the data gathered was the average rainfall during the rainy seasons

specifically in the range of months from June to October for the year 2013.

Methodology:

A naturalistic observation type of research was utilized in the study to gather data given by

Manila Water, without any manipulation, on the analysis of monthly average rainfall on the year

2013. Manila Water has a jurisdiction on giving accurate data because their governing body,

MWSS, approves them. Document review and interview are the techniques used by the group

for the data collection. One of the advantages of this type of research is that it allows the

researcher to directly observe the subject in a natural setting.

Background Study:

The La Mesa Watershed and Eco-Park consists of the La Mesa Dam and anecologicalnature

reserve site locatedQuezon City.It is part of theAngat-Ipo-La Mesa water system.

La Mesa Dam is an earth dam that can hold up to 50.5 million cubic meters and occupying an

area of 27 square kilometers built to supply water toMetro Manila and its suburbs. It is part of a

2,000-hectare watershed located in Fairview,Quezon City,San Jose del Monte

City inBulacan andRodriguez, Rizal.The reservoir is elevated at 100 meters above sea level.

The water collected in the reservoir is treated on-site by theMaynilad Water Services, and attheBalara Treatment Plant further south by theManila Water. Both water companies are

privateconcessionaires awarded by theMetropolitan Waterworks and Sewerage System, the

government agency in charge of water supply. It is a vital link to the water requirements of 12

million residents of Metro Manila considering that 1.5 million liters of water pass through this

reservoir every day.

http://en.wikipedia.org/wiki/Ecologicalhttp://en.wikipedia.org/wiki/Nature_reservehttp://en.wikipedia.org/wiki/Nature_reservehttp://en.wikipedia.org/wiki/Quezon_Cityhttp://en.wikipedia.org/wiki/Angat_Damhttp://en.wikipedia.org/wiki/Ipo_Damhttp://en.wikipilipinas.org/index.php?title=Metro_Manilahttp://en.wikipilipinas.org/index.php?title=Quezon_Cityhttp://en.wikipilipinas.org/index.php?title=San_Jose_del_Monte_Cityhttp://en.wikipilipinas.org/index.php?title=San_Jose_del_Monte_Cityhttp://en.wikipilipinas.org/index.php?title=Bulacanhttp://en.wikipilipinas.org/index.php?title=Rodriguez,_Rizalhttp://en.wikipedia.org/wiki/Maynilad_Water_Serviceshttp://en.wikipedia.org/w/index.php?title=Balara_Treatment_Plant&action=edit&redlink=1http://en.wikipedia.org/wiki/Manila_Waterhttp://en.wikipedia.org/wiki/Concessionairehttp://en.wikipedia.org/wiki/Metropolitan_Waterworks_and_Sewerage_Systemhttp://en.wikipedia.org/wiki/Metropolitan_Waterworks_and_Sewerage_Systemhttp://en.wikipedia.org/wiki/Concessionairehttp://en.wikipedia.org/wiki/Manila_Waterhttp://en.wikipedia.org/w/index.php?title=Balara_Treatment_Plant&action=edit&redlink=1http://en.wikipedia.org/wiki/Maynilad_Water_Serviceshttp://en.wikipilipinas.org/index.php?title=Rodriguez,_Rizalhttp://en.wikipilipinas.org/index.php?title=Bulacanhttp://en.wikipilipinas.org/index.php?title=San_Jose_del_Monte_Cityhttp://en.wikipilipinas.org/index.php?title=San_Jose_del_Monte_Cityhttp://en.wikipilipinas.org/index.php?title=Quezon_Cityhttp://en.wikipilipinas.org/index.php?title=Metro_Manilahttp://en.wikipedia.org/wiki/Ipo_Damhttp://en.wikipedia.org/wiki/Angat_Damhttp://en.wikipedia.org/wiki/Quezon_Cityhttp://en.wikipedia.org/wiki/Nature_reservehttp://en.wikipedia.org/wiki/Nature_reservehttp://en.wikipedia.org/wiki/Ecological

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Abstract:

The main purpose of this research is to claim whether the average volume of rainfall satisfies the

gathered data as mentioned above. Since the population size is less than 30, we used the t-test

hypothesis statistical test using the claimed average rainfall as the null hypothesis. Calculations

were done and as a result the claimed average rainfall was accepted because the computed valueis in the accepted area of the critical value.