CBSE · Class 10 · Geography · Chapter 3
Water Resources — Class 10 Geography (CBSE) explained
- Board exam 2026-27
- 4 lessons
- 32 scenes
- About 27 min
- Updated
Quick answer
Water Resources is Chapter 3 of CBSE Class 10 Geography. It covers water uses and renewability, interpreting water-scarcity evidence, agricultural water demand, multi-purpose river projects, flood-control limitations and locally adapted harvesting. AI Lessons teaches it in 4 narrated lessons (about 27 minutes) with an AI tutor and board-pattern practice.
What you’ll learn
Lesson 1: Why a Renewable Resource Becomes Scarce
7 min- Water Supports Life and Keeps Moving
- Water Scarcity Is Not Only About Rainfall
- Water Everywhere, but Drinking Water Is Scarce
- Food Production Places Heavy Demands on Water
- Industry and Urbanisation Intensify Water Pressure
- Atal Jal: From Consumption to ConservationNot assessed
- Enough Water Can Still Be Unsafe Water
- Conservation Protects Health, Food and Livelihoods
Lesson 2: Multi-purpose River Projects: Purposes and Consequences
7 min- Hydraulic Structures Have a Long HistoryNot assessed
- One River Project Can Serve Several Purposes
- What a Dam Does and How It Is ClassifiedNot assessed
- Projects Link Agriculture and Industry
- A Bhadu Song Expresses the Experience of FloodingNot assessed
- Damming Changes River Flow and Habitats
- Sardar Sarovar: Water for Drought-prone Areas
- Flood-control Dams Can Have Unintended Consequences
Lesson 3: Managing Water: Irrigation, Map Work and Harvesting
7 min- Irrigation Must Balance Access and Efficiency
- Upstream Diversion Can Affect Downstream UsersNot assessed
- Board Map Work: Names and Supported Locations
- Harvesting Methods Match Local Conditions
- Flood Safety: Warnings, Safe Movement and Clean Water
- Rajasthan's Tankas Store Rooftop Rainwater
- Rooftop Water Can Support Groundwater Recharge
- Stored Water Supports Use Between Rainfalls
Lesson 4: Rainwater Harvesting in Practice
7 min- Shillong: Heavy Regional Rainfall Does Not End ScarcityNot assessed
- New Water Supply Can Change Traditional Practice
- Gendathur Adapts Rooftop Harvesting to Household Needs
- Tamil Nadu Makes Rooftop Harvesting CompulsoryNot assessed
- Bamboo Pipes Deliver Water Near Plant RootsNot assessed
- Investigate Pollution and Discuss Competing Water Needs
- Use Evidence to Classify Scarcity and Evaluate Projects
- Recap: Explain Scarcity, Evaluate Projects and Trace Harvesting
Key concepts
- Water uses and renewability
- Surface run off and ground water are continually renewed and recharged through the hydrological cycle.
- Interpreting water-scarcity evidence
- Water is visible, but obtaining drinking water remains difficult.
- Agricultural water demand
- Irrigated agriculture is the largest consumer of water. Farmers use wells and tube-wells to increase their produce, but continued over-exploitation can make groundwater levels fall.
- Multi-purpose river projects
- The many uses of impounded water are integrated, so these dams are called multi-purpose projects.
- Flood-control limitations
- Flood control is one purpose of dams, but it is not a guaranteed outcome. Sedimentation in reservoirs can trigger floods, and big dams are mostly unsuccessful in controlling floods during excessive rainfall.
- Locally adapted harvesting
- The important principle is adaptation: the method responds to the setting and the purpose.
- Recharge diagram interpretation
- Some water is used immediately, while the excess supports recharge.
- Gendathur adaptation
- Rooftop rainwater harvesting is successfully adapted in many rural and urban parts of India. Gendathur is a village in Mysuru, Karnataka, where villagers install household rooftop systems to meet their water needs.
Exam focus
- Board exam
- CBSE assesses this chapter in the 2026-27 year-end board examination.
- Syllabus
- Water Resources. Learning outcomes: examine the reasons for conservation of water resource in India; analyse and infer how the multipurpose projects are supporting the requirement of water. Map work: Water Resources - Locating and Labeling: Salal, Bhakra Nangal, Tehri, Rana Pratap Sagar, Sardar Sarovar, Hirakund, Nagarjun Sagar, Tungabhadra.
- Not assessed
- These parts go beyond the 2026-27 syllabus and are taught for understanding only: Atal Jal: From Consumption to Conservation, Hydraulic Structures Have a Long History, What a Dam Does and How It Is Classified, A Bhadu Song Expresses the Experience of Flooding, Upstream Diversion Can Affect Downstream Users, Shillong: Heavy Regional Rainfall Does Not End Scarcity, Tamil Nadu Makes Rooftop Harvesting Compulsory and Bamboo Pipes Deliver Water Near Plant Roots.
- Map work
- Board map items (locate and label; may also be asked for identification): dams Salal, Bhakra Nangal, Tehri, Rana Pratap Sagar, Sardar Sarovar, Hirakund, Nagarjun Sagar, Tungabhadra. The 2026-27 sample paper Q19 asked for Sardar Sarovar (Narmada, Gujarat) or Bhakra Nangal (Sutluj-Beas basin).
- Exam note
- (sample paper Q16, rainwater harvesting in a drought-prone district, shows the board situational style.) Do not supply locations from memory; flag for owner review.
- Map work
- The board sets word-only alternatives to map questions for visually impaired candidates (2026-27 sample paper Q9/Q19, e.g. "Where is the Meenambakkam international airport located?"), so stating each place and its location in words is directly exam-useful.
- Paper pattern
- Social Science 80 marks, 3 hours, 38 questions; Section B Geography 20 marks (17 + 3 map pointing). VSA 2 marks (<=40 words), SA 3 marks (<=60 words), LA 5 marks (<=120 words), case-based 4 marks (3 sub-questions, <=100 words); map question in Geography 3 marks.
- Question style
- About 50% of board questions are competency-focused.
- Practice in the app
- 93 board-pattern questions with marking schemes: 30 multiple choice (1 mark), 28 very short answer (2 marks), 20 short answer (3 marks), 5 long answer (5 marks) and 10 case-based (4 marks).
Sample questions with marking points
Board-pattern questions from the AI Lessons practice set for this chapter. The marking points show what an examiner looks for; full model answers are in the app.
Very short answer2 marks
Aquatic fauna previously moved along a continuous river during spawning. Explain how constructing a dam can interfere with this movement.
Marking points
- Dams fragment rivers and interrupt their continuity.1
- River fragmentation makes aquatic migration difficult, especially for spawning.1
Short answer3 marks
A hill village wants a system that separates water collection from water use. Using the arrangement in Kaza village, describe how it could convey, store and release water.
Marking points
- A kul conveys water to the village tank.1
- A circular village tank collects and stores the water.1
- Water is released from the tank as and when required.1
Long answer5 marks
A household in semi-arid Rajasthan wants to collect rooftop rainwater for dry months. Explain the collection route to a tanka, the handling of the first spell of rain and the benefit of storage. Then state the extent of household adoption and annual per-house collection in Gendathur as evidence of modern use of this harvesting principle.
Marking points
- Rainwater travels from a sloping roof through a pipe into an underground tanka in the main house or courtyard.1
- The first spell of rain is not collected because it cleans the roof and pipes; subsequent showers are collected.1
- Stored rainwater remains available until the next rainfall and supplies drinking water when other sources dry up, particularly in summer.1
- Nearly 200 households in Gendathur have installed rooftop harvesting systems to meet their water needs.1
- Each house in Gendathur can collect and use about 50,000 litres annually.1
Frequently asked questions
What does Water Resources cover in Class 10 Geography?
It covers water uses and renewability, interpreting water-scarcity evidence, agricultural water demand, multi-purpose river projects, flood-control limitations and locally adapted harvesting. AI Lessons teaches it in 4 lessons: Why a Renewable Resource Becomes Scarce, Multi-purpose River Projects: Purposes and Consequences, Managing Water: Irrigation, Map Work and Harvesting and Rainwater Harvesting in Practice.
Is Water Resources in the CBSE Class 10 board exam?
Yes. CBSE assesses Water Resources in the 2026-27 year-end board examination. 8 short parts go beyond the syllabus and are marked as not assessed.
Why is water classified as a renewable resource?
Surface run off and groundwater are continually replenished through the hydrological cycle. The hydrological cycle continually renews and recharges water.
Which activity is the largest consumer of water?
Irrigated agriculture. Irrigated agriculture is the largest consumer of water.
What are multi-purpose projects?
The many uses of impounded water are integrated, so these dams are called multi-purpose projects.
What is the reason?
The reason is the connection between different parts of the economy. Water and power can link agricultural development and the village economy with rapid industrialisation and urban growth.
Which river project belongs to the Mahanadi basin and integrates conservation of water with flood control?
Hirakud. Hirakud belongs to the Mahanadi basin and combines water conservation with flood control.
How does AI Lessons teach Water Resources?
As 4 narrated, animated lessons (32 scenes, about 27 minutes in all), with an AI tutor that knows the step you are on and board-pattern practice with marking schemes. The full lessons open after sign-in on an AI Lessons account.
Watch the full lesson
Water Resources, as a narrated, animated lesson
4 lessons · 32 animated scenes · about 27 minutes, with an AI tutor that knows the step you are on and 93 board-pattern questions with marking schemes.
Lessons open after sign-in. A parent or guardian holds the account and adds each child.