The land beneath Odisha
Physical geography is the study of the natural setting: the rocks underfoot, the shape of the land, the rivers that drain it, the climate that waters it, and the soils, forests and wildlife it supports. In Odisha these elements are closely linked. Some of the oldest rocks on Earth form its plateaus, the Eastern Ghats divide its interior, great rivers build a delta on its coast, and the monsoon shapes its farming, forests and floods. This section brings all of them together in one place.
How the topics connect
Read them in this order. Each one builds on the one before: rocks give rise to landforms, landforms guide the rivers, and climate and soil together decide what grows and lives where.
Topics in this section
Each topic page gives the full picture with maps, tables and key facts. Linked articles go deeper into individual regions, rivers and rock systems.
GeologyThe rock foundation
Odisha’s rocks span more than three billion years, from the Archaean cratons of the north to the young alluvium of the delta.
- Precambrian rocks cover about 72.5% of the state
- Singhbhum Craton, Eastern Ghats Belt and Bastar Craton
- Gondwana basins hold the coal of Talcher and Ib Valley
PhysiographyRelief and landforms
Odisha is divided into five physiographic regions, from the deltaic coast to the Eastern Ghats and the western uplands.
- Coastal plains, highlands, plateaus, rolling uplands and river valleys
- Deomali (1,672 m) in Koraput is the highest peak
- Plateaus 305–610 m; rolling uplands 153–305 m
Drainage SystemRivers and basins
Most of Odisha’s rivers flow east to the Bay of Bengal; a few in the south-west drain to the Godavari.
- The Mahanadi basin covers about 42% of the state
- Mahanadi, Brahmani and Baitarani build one combined delta
- Hirakud on the Mahanadi is one of the world’s longest dams
ClimateMonsoon and seasons
A tropical monsoon climate with hot summers, a rainy south-west monsoon and frequent cyclones from the Bay of Bengal.
- Most of the rain falls between June and September
- Western Odisha records some of India’s highest summer temperatures
- The coast is exposed to cyclones, floods and storm surges
SoilsTypes and fertility
Soils follow the rocks and relief: red and laterite soils on the uplands, alluvium in the deltas and valleys.
- Red, red-and-yellow and laterite soils dominate the interior
- Deltaic alluvium is the state’s most fertile farmland
- Black soils occur in parts of western Odisha
ForestsNatural vegetation
Tropical moist and dry deciduous forests, with sal dominant, cover much of the hills; mangroves fringe the coast.
- Sal forests of Simlipal, Kendujhar and Sundargarh
- Mangroves of Bhitarkanika at the Brahmani–Baitarani mouth
- Kendu leaf, bamboo and other forest produce support livelihoods
National ParksHighest protection
Odisha’s national parks protect its most important habitats, from tiger forests to mangrove creeks.
- Simlipal: sal forests, waterfalls and tigers of Mayurbhanj
- Bhitarkanika: mangroves and saltwater crocodiles
Wildlife SanctuariesHabitats and species
A network of sanctuaries across the plateaus, the Eastern Ghats and the coast, including Chilika and Satkosia.
- Elephants, tigers, leopards and gaur in the forest sanctuaries
- Chilika: migratory birds and Irrawaddy dolphins
- Gahirmatha and Rushikulya: olive ridley turtle nesting
Key physical facts
A quick reference for revision.
| Location | 17°49′–22°34′ N, 81°29′–87°29′ E, on the east coast of India |
|---|---|
| Area | 1,55,707 sq km |
| Physiographic divisions | Coastal Plains · Middle Mountainous and Highlands Region · Central Plateaus · Western Rolling Uplands · River Valleys |
| Highest peak | Deomali (1,672 m), Koraput district |
| Largest river | Mahanadi (about 494 km in Odisha) |
| Largest lake | Chilika, a brackish-water lagoon on the coast |
| Oldest rocks | Archaean rocks of the Singhbhum Craton, over 3 billion years old |
| Coal-bearing rocks | Gondwana basins of Talcher and Ib Valley |
| Climate | Tropical monsoon; rain mainly from the south-west monsoon (June–September) |
| Main natural hazards | Cyclones, floods, droughts and heat waves |
For exam preparation
Questions on Odisha’s physical geography come up often in OPSC, OSSC, OSSSC and university examinations. Focus on:
Names & locations
Peaks, plateaus, rivers, tributaries, dams, lakes and protected areas, and the districts they lie in.
Figures
Heights, lengths, basin areas and the proportions of forest and soil types. Learn them in round numbers.
Relationships
How rocks control landforms, how relief guides rivers, and how climate and soil shape forests and farming.
Maps
Practise sketching the five physiographic regions and the major rivers on an outline map of Odisha.
Continue to Economic Geography
See how Odisha’s land, water, minerals and forests support its agriculture, industries, energy and transport.
Note: Figures are drawn from government and academic sources and are rounded for clarity. Please check important figures against official publications. Spotted an error? Let us know.