Cover Image
close this book Water purification, distribution and sewage disposal for Peace Corps volunteers
close this folder Section 1: Water supply sources
View the document Overview:
View the document Background information
View the document Evaluation of sources
View the document Factors influencing the quality of water
View the document The quantity of water
View the document Types of sources
View the document Development of water sources
View the document The basic requirements of a water supply
View the document Selection of the source of supply
View the document Lesson plans

Lesson plans

WATER SUPPLY SOURCES

LESSON NO. 1

LESSON OBJECTIVE: Describe the methods used to locate and record existing water supply sources with respect to the community to be served.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS RELATED READING

Topographic

Contouring

Hand out exercise on topographic contouring and assist students where necessary.

 

Topographic

Mapping

Discuss the use of the compass and the interpretation of topographic maps.

Manual of' Field Geology p. 21-25.

Any basic laboratory manual of Physics Geology

 

Demonstrate drawing a crude topographic map of a prominent topographic feature.

Manual of Field Geology p. 36-50.

 

Outline what features are to be included and how they are to be represented in a topographic sketch map.

A. F. M. TM 5-700 p. 6-15.

 

Assign students to groups of five. Have each group map a quarter mile area. Each map should include the following features:

1) man-made structures

2) livestock grazing areas

3) water supply sources

4) disposal systems

 

Plane Table

Mapping

Demonstrate how to construct a more service able map, the plane table map.

 

 

WATER SUPPLY SOURCES

LESSON NO. 2

LESSON OBJECTIVE: Demonstrate how to identify and evaluate various water supply sources.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/ RELATED READING

Rook and Soil Type

Outline the physical characteristics and discuss the hydrological properties of the basic rock end soil types.

 
 

Assist students in identifying the basic rock and soil types.

 
 

Have each student identify rock and soil types from a series of circulating samples.

 

Physical and Chemical Pollutants.

List the major chemical and physical pollutants and discuss the nature of these

Manual of Individual

Water Supply Systems

p. 5-13.

Identification of Physical Pollutants

Demonstrate how to identify turbidity with measuring cup.

 
 

Assist students in identifying physical pollutants from A suite Or water samples. Water samples should reflect the various pollutants: turbidity, color, odor, taste and temperature.

 

Water Supply Sources

Outline the factors that influence the quality and quantity of a given water supply source.

Manual of Individual

Water Supply Systems

p. 13-20

 

List and discuss the characteristics of the various water supply sources.

WHO Monograph #42

Chapter 5.

 

Demonstrate evaluating these sources in the field.

WHO Monograph #42

Annex 4 (p. 271-275).

also p. 39-42.

 

Assign students to groups of five.

 
 

Assign each of these groups to a three mile area.

 
 

Have each group evaluate each source in its area in terms of

1) location

2) quantity

3) quality as determined from any physical pollutants present and possible sources of contamination.

Assemble groups to have each group report on the feasibility of the water supply sources in its area.

 

 

WATER SUPPLY SOURCES

LESSON NO. 3

LESSON OBJECTIVE: Discuss developments that will improve the quality and yield of the various water supply sources.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/RELATED READING

Water Point

Developments

Recall the need for water source developments and describe several of these.

WHO Monograph #42

Chapter 5

Small Water Supplies

p. 14-25.

 

Demonstrate a method for determining the relative coot of a source development from a list of its components and an estimate of the labor cost.

VTH #2, p. 5-7, 11-13.

WHO Monograph #42

Annex 7, p, 297-310.

 

Supervise students in estimating the relative cost of basic developments for

1) lakes and ponds

2) streams and rivers

3) cisterns

4) springs

Have each student describe and estimate the relative coat of a development for each of the four sources listed above.

Diagrams or charts of these types of developments.