Chickamauga Dam: Power, Water, and the Tennessee River

Materials Needed

• Paper or a notebook
• Pencils, colored pencils, or markers
• Ruler
• One clear glass or cup
• Water
• Small blocks, books, or building pieces
• Small toy boat, paper boat, or folded piece of paper
• Optional: computer or tablet for viewing a map of the Tennessee River and Chickamauga Dam
• Optional: flashlight or small battery-powered light for a hydropower demonstration

Lesson Overview

Learner: Olivia, age 11

Suggested time: 60–90 minutes, with an optional outdoor or research extension

Big question: How does Chickamauga Dam help people, and how does it change the river environment?

Learning Objectives

By the end of the lesson, Olivia will be able to:

• Locate Chickamauga Dam on a map and identify its connection to the Tennessee River.
• Explain at least three purposes of the dam, such as producing electricity, helping boats travel, supporting flood control, or creating a reservoir.
• Describe, in simple steps, how moving water can help produce electricity.
• Identify at least one benefit and one possible environmental change caused by a dam.
• Create and explain a model, diagram, or short presentation about Chickamauga Dam.

Success Criteria

Olivia is successful when she can:

• Correctly label the Tennessee River, Chickamauga Dam, upstream water, and downstream water on a simple diagram.
• Explain how water movement can turn turbines to generate electricity.
• Give three accurate reasons dams are useful.
• Discuss both helpful effects and possible challenges of dams.
• Use evidence from the lesson in her final project.

Introduction: The River Mystery

Hook

Ask Olivia:

Imagine that a giant wall is built across a river. Would the river stop? Would boats still be able to travel? Could the river help turn on the lights in your home?

Tell Olivia that Chickamauga Dam is a large dam on the Tennessee River near Chattanooga, Tennessee. It is part of a system operated by the Tennessee Valley Authority, often called the TVA. The dam helps control and use river water in several ways.

Connect to What Olivia Knows

Ask Olivia to think-pair-share with a parent, teacher, or stuffed animal “learning partner.” If she is working independently, she can write her answers in her notebook.

1. Where does the water in a river come from?
2. What jobs might a dam do?
3. What might happen to a river if a wall blocked part of its flow?

Explain the lesson plan:

“First, we will learn where Chickamauga Dam is and what it does. Then we will investigate how moving water can make electricity. Finally, you will design and explain your own Chickamauga Dam project.”

Body: Learn and Investigate

Part 1: Find Chickamauga Dam on the Map — I Do

Show Olivia a map of Tennessee, the Tennessee River, and the Chattanooga area. If a map is not available, describe the location using a simple hand-drawn map.

Explain these key ideas in student-friendly language:

• The Tennessee River: A major river that flows through parts of the southeastern United States.
• Chickamauga Dam: A dam on the Tennessee River near Chattanooga, Tennessee.
• Reservoir: A lake or large body of stored water created or controlled by a dam. The water behind Chickamauga Dam is called Chickamauga Lake.
• Hydroelectric power: Electricity made by using moving water.
• Lock: A structure that helps boats move between areas of water at different heights.

Model a simple map drawing. Include:

1. A winding line for the Tennessee River.
2. A large wall crossing the river for Chickamauga Dam.
3. Blue shading upstream of the dam to represent Chickamauga Lake.
4. An arrow showing water moving downstream.
5. A small boat near the lock.
6. A lightning-bolt symbol near the dam to represent electricity.

Quick Check

Ask Olivia:

• Which direction does water usually move: upstream or downstream?
• What is the name of the stored water behind the dam?
• Why might a boat need a lock?

Part 2: What Does Chickamauga Dam Do? — We Do

Work together to match each dam purpose with its explanation. Olivia can draw lines, use sticky notes, or write the matches in her notebook.

Dam Purpose	What It Means
Producing electricity	Moving water can spin turbines connected to generators.
Helping navigation	A lock helps boats travel past the dam.
Managing water levels	The dam helps control the movement and storage of river water.
Supporting recreation	The reservoir can provide places for boating, fishing, and other outdoor activities.
Supporting communities	The river system provides benefits for people, businesses, transportation, and wildlife management.

Think-Pair-Share: Is a Dam Helpful?

Have Olivia choose two roles:

• River Scientist: Thinks about water, animals, plants, and habitats.
• Community Planner: Thinks about electricity, boats, recreation, and people who live nearby.

Ask her to answer:

1. What is one way the dam helps people?
2. What is one way the reservoir can help animals or plants?
3. What is one possible challenge for fish or other river animals?

Explain that dams can provide important benefits, but they also change a river. A dam may change water speed, water temperature, fish movement, and the habitats where plants and animals live. Scientists and engineers study these changes and look for ways to protect the river.

Part 3: How Moving Water Makes Electricity — I Do

Use the following explanation and draw each step as you say it:

1. Water is stored in the reservoir behind the dam.
2. Water is allowed to move through special passages in the dam.
3. The moving water pushes against turbine blades.
4. The turbines spin a generator.
5. The generator changes the motion into electrical energy.
6. Electricity travels through power lines to homes, schools, and businesses.

Use this comparison:

“A turbine is a little like a pinwheel. Wind spins a pinwheel, but flowing water spins a turbine.”

Hands-On Demonstration: Water Energy

1. Place a cup on a stable surface.
2. Hold a small paper pinwheel or toy wheel near a gentle stream of water from a faucet. If this is not possible, use a paper boat in a bowl of water and gently move the water with your hand.
3. Observe how moving water can push or move an object.
4. Discuss how a much larger and faster flow of water could turn turbine blades.

Safety: Use only a small amount of water, clean up spills, and keep water away from electrical outlets and devices. Never go near a dam or fast-moving water without an adult and proper safety guidance.

Formative Assessment: Explain It in 30 Seconds

Ask Olivia to explain this sentence in her own words:

“Water at Chickamauga Dam can become electricity because…”

Listen for these ideas: moving water, turbines, generators, and electricity. Correct any confusion by having Olivia act out the process: one hand is the water, one hand is the turbine, and a pretend light switch shows the electricity.

Part 4: Build a Dam Model — We Do, Then You Do

Shared Design

Use books, blocks, or building pieces to create a model river:

1. Make two sides of a river using blocks or books.
2. Leave a channel for water to flow.
3. Build a small wall across the channel to represent the dam.
4. Place a paper boat upstream of the dam.
5. Discuss where a lock might be placed so the boat could travel past the dam.

Do not pour water onto books, electronics, or furniture. For a water test, use a shallow tray, sink, bathtub, or outdoor area with adult supervision.

Design Challenge: Engineer a River System

Olivia chooses one of these project options:

• Option A: Build a model of a dam, reservoir, river channel, lock, and power station.
• Option B: Create a labeled poster showing how Chickamauga Dam works.
• Option C: Make a short presentation called “A Day in the Life of Chickamauga Dam.”
• Option D: Write a journal entry from the viewpoint of a boat captain, fish, engineer, visitor, or nearby resident.

The project must include:

• The Tennessee River
• Chickamauga Dam
• Chickamauga Lake or reservoir
• One explanation of hydroelectric power
• One explanation of how boats can pass the dam
• Two benefits of the dam
• One possible challenge for the environment

Optional Measurement Challenge

Have Olivia use a ruler to design a scale drawing. For example:

• 1 centimeter = 1 kilometer
• Blue represents water.
• Brown represents the dam.
• Green represents land or wildlife habitat.
• Arrows show water movement.

Ask: “Why is a map scale useful when showing a real place?”

Real-World Connection

Explain that people who study or work with dams may have different jobs, including:

• Engineers who design and inspect structures
• Hydrologists who study water movement
• Ecologists who study plants and animals
• Electricity specialists who monitor generators
• Boat operators who use locks and river channels
• Park and recreation workers who help visitors use the lake safely

Ask Olivia to choose one job and explain:

1. What might this person do at or near Chickamauga Dam?
2. What science or math skills would the person use?
3. What safety rule might be important?

Differentiation and Choice

Support for a Learner Who Needs More Structure

• Provide a partially completed diagram with the words reservoir, dam, turbine, generator, lock, and river.
• Use sentence starters:
  • “The dam helps people by…”
  • “Moving water can…”
  • “One change to the environment may be…”
• Allow Olivia to explain her project orally instead of writing a long report.
• Review one purpose of the dam at a time rather than discussing all purposes together.

Extension for a Learner Ready for More Challenge

• Research the history of the Tennessee Valley Authority and why dams were built in the Tennessee Valley.
• Compare hydroelectric power with solar or wind power.
• Investigate how a fish passage or fish-friendly design might help river animals.
• Calculate how many small homes could be powered if each used a chosen amount of electricity. Clearly label the estimate as imaginary.
• Write a balanced argument answering: “Should communities build more dams?”

Different Learning Formats

• Visual: Use maps, diagrams, color coding, and labeled drawings.
• Auditory: Explain the process aloud or record a short audio report.
• Hands-on: Build and test a model river system.
• Digital: Create a slide presentation or digital diagram.
• Writing-focused: Complete the engineer journal or write a persuasive paragraph.

Assessment

Formative Assessment During the Lesson

• Map labeling check
• Purpose-and-explanation matching activity
• 30-second explanation of hydroelectric power
• Questions during the model-building activity
• Observation of whether Olivia can explain upstream, downstream, reservoir, turbine, and lock

Summative Assessment: “Dam Expert” Demonstration

Olivia presents her model, poster, presentation, or journal entry to an adult. She should explain:

1. Where Chickamauga Dam is located
2. What happens to water behind the dam
3. How the dam can help produce electricity
4. How the dam supports boats or navigation
5. Two benefits of the dam
6. One environmental challenge and one possible way people could study or reduce it

Simple Rubric

Skill	Excellent	Developing	Needs More Practice
Location and map	Accurately labels the river, dam, and reservoir.	Labels most features correctly.	Needs help identifying the features.
Dam purposes	Explains three or more purposes clearly.	Explains two purposes.	Names a purpose but cannot explain it yet.
Hydroelectric power	Correctly explains water, turbines, generators, and electricity.	Explains some of the steps.	Needs to review the sequence.
Environmental thinking	Explains a benefit and a challenge with a reasonable example.	Identifies a benefit and challenge.	Needs help considering more than one point of view.
Communication	Project is clear, labeled, creative, and supported with explanations.	Project communicates the main idea.	Project needs more labels or explanation.

Conclusion: Tell What We Learned

Recap

Ask Olivia to complete these statements:

• “Chickamauga Dam is located on the…”
• “The water stored behind the dam is called…”
• “Moving water can produce electricity when it turns…”
• “A lock helps…”
• “One benefit of a dam is…”
• “One environmental change caused by a dam might be…”

Exit Ticket

Olivia answers these questions in her notebook:

1. What is one new fact you learned about Chickamauga Dam?
2. What part of the dam system would you like to investigate further?
3. If you were designing a new dam, what would you do to help people and protect wildlife?

Final takeaway: Chickamauga Dam is more than a wall across a river. It is part of a larger river system that can help produce electricity, support navigation, manage water, and provide recreation. At the same time, changing a river can affect habitats, so careful planning and scientific study are important.

Optional Follow-Up Activities

• Take a supervised field trip to a safe public viewpoint near Chickamauga Dam. Observe the river, shoreline, boats, signs, and safety barriers without entering restricted areas.
• Keep a three-day water journal recording rain, puddles, streams, or water use at home.
• Design a “River Helper” invention that protects fish, reduces erosion, or improves boating safety.
• Create a family quiz with five questions about dams, rivers, and hydroelectric power.