Scientific Article Rio Piedras & Guaralcanal stream vol3Document Transcript
PR Water Cops CL C L C W A T E R Q U A L I T Y . B L O G S P O T . C O M V O L U M E # 2 A P R I L 1 3 , 2 0 1 1 Introduction p. 1 Abstract p. 1 Introduction Purpose p. 2 Where does the water (CWA, for its acronym in stances to a body of wa- Materials p. 2 you use come from? Do English) establishes that ter can damage its qual- you always have enough water quality should be ity, which stops it from Procedure p. 3 water or is it limited at evaluated and maintained being suitable for what it the place where you live? in accordance with estab- was designated. Results p. 4-5 What factors affect the lished (USEPA, 2002). The concept of water Result Analysis p. amount and quality of the pollution depends on the 5-6 water where you live? purpose to which the wa- Conclusion p. 6 The over enrichment ter is designated. with nutrients and the contamination with patho- gens of the bodies of wa- Excessive amount of ter negatively affect nutrients to bodies of their use for public con- sumption, for industry water reduce their water quality, which can lead to and agriculture, and as being habitat for wild life an eutrophic state. (USEPA 2005). We understand that the addition of sub- The Clean Water Act Rio Piedras—Jardín Botánico Abstract Water Contamination The multidisciplinary of land use can affect and Think-quest.org or project Water Cops PR plant and animal communi- Blogger. CL, will make students to ties that live along it. This project also has the explore their own water- This project also in- purpose of making stu- shed and understand what tends to develop technol- dents create conscious- happens to the flow of ogy skills on students in ness about the environ- water over them. The applications such as Log- ment they live in.Contaminated urban river students will also visual- ger Pro and Vernier Soft- ize the way in which hu- ware LabQuest, MS Pub- man activities impact the lisher 2007, ArcGIS Ex- river’s hydrology and the plorer , Adobe Premier way in which the change
P AGE 2 Purpose Students will investigate their own water- (Spanish), and Technology - Video Docu- shed to understand the flow of water in mentary - Adobe Premier. Geography them, how human activities can affect its and Technology - GeoMapping - ArcEx- hydrology, and how the usage of land by plorer, in English (Spanish), and Technol- humans can also affect the hydrology wa- ogy - Blog Thinkquest.org Google Blog- tershed. ger. Students from elementary through high school level will be involved in this project. During the development of the students are in-they involve sub-tasks and tasks to com- plete the following products : "In Science, Mathematics and Technology - Scientific Article (Journal)-In English Water Cops collecting data Materials Water Cops CL project is a multi-application where students have the oppor- tunity to perform research on water quality from several points of Rio Pie- dras. The students will be using technologies such as: Vernier Technology to take water quality measurements. It will be chosen an urban water body close to the school and two sampling locations will be selected in this body of water. There will be three trials for each sample using the different sensors of Vernier LabQuest. Some of the measurements which will be performed are: -Turbidity -Conductivity This measurements were took using : -Alkalinity Vernier Labquest Sensors -pH -Temperature -Dissolved Oxygen - Stream Flow VernierVernier Labquest and Ion Selec- tive Electrodes Labquest Water Quality kit P R WA TER COP S CL NEW S
CLCW A TERQUA LIT Y.BLOG SP OT .COM P AGE 3 Procedure Part I. Physical Assessment of Wa- Part III. Biological Assessment ter Quality Part II. Chemical Evaluation of Wa- ter Quality Description: As a component of Description: As a component of water quality research, the students Description: As a component of water quality research, the students observe, measure and map the water quality research, the students collect, identify and analyze data. physical characteristics of a stream use handhelds LabQuest Vernier This information is analyzed to of water. Quantitatively, using scientific and current sensors for draw conclusions given the local handheld computers scientific Lab measuring pH, dissolved oxygen, creek water. Quest Vernier sensors and current temperature and turbidity. Students Objectives: At the end of the pro- flow, the students measure different develop a hypothesis, record data gram, students will be able to: parameters (mentioned in the ma- obtained including measurements 1. Define the terms watershed, ero- terials section). Qualitatively, stu- and observations. So students may sion, contamination and local water- dents use the skills of observation do a scientific conclusion. sheds. to notice specific characteristics of Objectives: Upon completion of the 2. Make graphs with the collected the river. project, students will be able to: data. Objectives: Upon completion of the 1.Define the terms of watersheds, project, students will be able to: source of pollution including indi- 1. Define the terms of the water- rect sources, pH, dissolved oxygen shed, erosion, and deposition. and turbidity. 2. Identify local watersheds by 2. Identify different sources of con- name. tamination. 3. Use scientific tools to determine 3. Explain how pollutants travel physical water quality by collecting through the river basin and explain data. how different chemical proportions 4. Build a watershed model-map of a stream affect water quality. using the titles, legends and their 4.Develop products with the ob- role. tained results. 5. Develop ways to maintain a 5. Use math while collecting data. healthy water body based on physi- 6. Apply the scientific method. Water Cops analyzing water quality data cal, chemical and biological evalua- tion. Water Cops collecting data with sensors Conference Corredor Ecológico Team Work
P AGE 4 Water Quality Sampling in the Rio Piedras On Saturday, January 22, “normal” range for a quantity of DO for optimal 2011, at 10:21 A.M. we, stream or a river can cause for optimal conditions for The Green Team, went to harm to the aquatic organ- the organisms. The average the Rio Piedras to collect isms that live there like DO of this river is 4.7 mg/L. water samples. The water stonefly larvae or mosqui- The pH is a measure of state was normal and the toes. The average tempera- acidity or alkalinity of a solu- sky was clear with isolated ture of this river is 23.7 ° tion. The pH indicates the clouds. The latitude was C. concentration of hydronium 18.38837 and the longitude The dissolved oxygen of ion (H30 +) present in cer- was 66.05904. a body is the quantity of tain substances, in this case The temperature of a oxygen that the water has. water. According to our re- body of water influences The measurements took in search, the Rio Piedras has its overall quality. Water the two points of the Rio an average pH of 7.68. This temperatures outside the Piedras have the minimum pH is optimal for the survival of all marine organisms. Water quality at this point of the Rio Piedras is generally acceptable for domestic use and water. Turbidity is a measure of water’s lack of clarity. Water with high turbidity is cloudy, while water with low turbidity is clear. The cloudiness is produced by light reflecting off of particles in water; therefore, the more particles in the water, the higher the turbidity. Stream flow or discharge is the volume of water that moves through a specific point in a stream during a given period of time. Stream flow is an important factor in the stream ecosys- tem and is responsible for many of the physical characteristics of a stream. Stream flow has two Vernier Labquest components. The first is flow velocity, and the second is the volume of water in the stream. The average of the stream flow was 0.18 cfs. The conductivity of a substance defines as the ability or power of conducting heat, electricity. Pure water is a good conductor of electricity. According to our results, the sample has medium levels of conductivity. The normal conductivity level in a river or lake is of 5.5 μS/cm, however our readings were of 381 μS/cm. The average of the conductivity was 381 μS/cm. Water Cops preparing for the water quality data collection of the Rio PiedrasOld Aqueduct - Jardín Botánico P R WA TER COP S CL NEW S
CLCW A TERQUA LIT Y.BLOG SP OT .COM P AGE 5Water Quality Sampling in the Guaralcanal StreamOn Saturday, January 29, 2011 or river can cause harm to the two points of the Rio Piedrasat 9:30 A.M. we, The Green aquatic organisms that live there have the minimum quantity ofTeam, went to the Guaralcanal like stonefly larvae or mosqui- DO for optimal living condi-stream to collect water samples. toes. Our results can compare to tions for the organisms. TheThe water state was normal and the temperatures of the rivers DO is around the 4.7mg/Lthere were no clouds. The lati- in the US during the summer which is the average in thistude was 18.37715 and the longi- time. The average water tem- zone. The average of the DOtude was 66.04630. perature was 24.1°C. was 4.3 mg/L. The temperature of a body ofwater influences its overall qual- The DO of a body is the quantityity. Water temperatures outside of oxygen that has the water.the “normal” range for a stream The measurements took in theTurbidity is measure inNephelometric turbidityUnits, NTU. According tothe USGS, the turbidity ofsurface water is usually be-tween 1 NTU and 50 NTU.Water is visibly turbid atlevels above 5 NTU. Theaverage turbidity in thissite of the Guaralcanalstream is 25..3NTU. Water quality sampling in Guaralcanal streamStream flow or discharge is the The conductivity is a substancevolume of water that moves define as the ability or power to conducting heat and electric-through a specific point in a ity.. Pure water is a good con-stream during a given period of ductor of electricity. Accordingtime. Stream flow is an impor- to our results, the samples hastant factor in the stream eco- medium levels of conductivity.system and is responsible for The normal conductivity in amany of the physical character- river or lake is of 5.5µs/cm,istics of a stream. Stream flow however our readings were ofhas two components. The first 521µs/cm.is flow velocity, and the secondis the volume of water in thestream. The average of the Mr. Hernádez and Mr. Carrión using the Flow rate sensorstream flow 0.20 cfs.
P AGE 6Analysis of a Watershed in Puerto Rico a) climatic data including seasonal and station densi- ties of both: extremes and averages. b) road map Possible dynamic models : a) Buffer zones map vs actual construction or aerial photos. c) hydrographic maps b) Population density vs. amount of available water re- d) hydrological data (inventory of water, surface sources runoff, river network); c) Analysis of potential areas for reforestation preventing e) lists of species for the fauna and flora, land and water, its distribution, life histories, economically contamination of the canal. important species, rare species and unique or that d) Map of places that could be designated as protected re- are in danger of extinction; serves or for the benefit of all. e) Map of the hot spots and dividing by their effect f) population density (minimum, medium, severe) . g) flood map h) ecosystem i) Soil maps (distribution, nutrients, toxic minerals); j) Anthropological studies; k) Sources of pollution past, present and future can do so by searching or a tour of the area using GPS. l) location and description of existing environmental problems, location of critical areas. Water Cops working with theDiscussion of the Results Scientific Article According to the dynamic model created with the ArcGISExplorer can be seen clearly that the population density surround-ing the sampling area is extremely high. Research tells us that mostof the parameters are expected and normal levels, but we have towatch some of these which are the maximum allowed or are al-ready at higher levels than expected.With this model, students can create spatial analysis of data ac-quired, organized and manipulated by them. Ms. Evalexa Tomei helping the Water Cops members Students sampled two areas of Rio Piedras river: Jardín Botánico and Guaralcanalstream. In the first site of the stream the samples showed normal levels of measurement,except turbidity and conductivity that are in the maximum level of the accepted range. Inthe second site the samples showed a level of nitrate and ammonium above the maximumlevel of range accepted. This second point is the most affected by pollution which theNH4 and NO3 levels are strongly affected, reflecting a level far above the expected level.The possible causes are the agricultural runoff, some kind of human pollution entering thewater, animal feedlots, runoff from fertilized fields, or treated municipal wastewater beingreturned to streams. Graphing with Vernier Labquest P R WA TER COP S CL NEW S
CLCW A TERQUA LIT Y.BLOG SP OT .COM P AGE 7 Contact us clcwaterquality.blogspot.com Colegio Mater Salvatoris COMPUTER LEARNING 17 años apoyando la educación en Puerto Rico Edificio BBVA Calle Amarillo #206 San Juan Puerto Rico Phone: 787-764-2222 Fax: 787-764-9999 clcwaterquality.blogspot.com www.clcpr.com