Geography of Karnataka
Overview
Geography of Karnataka is a core component of the Environmental Studies section in KAR TET Paper I. Questions typically test your knowledge of the state's physical features, river systems, climate zones, and natural resources. Since this is a Karnataka-specific exam, expect 3–5 questions directly from this topic.
Mastering this topic requires understanding how Karnataka's geography influences its agriculture, settlements, and livelihoods—a perspective essential for teaching EVS effectively. The state's diverse landscape—from coastal plains to the Deccan Plateau—provides rich material for classroom discussions on environment and sustainability.
Focus on factual recall (names, locations, statistics) and the ability to connect geographical features with human activities. Map-based mental visualization will help you answer questions faster.
---
Key Concepts
- **Location and boundaries**: Karnataka lies between 11°31'N to 18°45'N latitude and 74°12'E to 78°40'E longitude. It shares borders with Maharashtra (north), Goa (northwest), Kerala (south), Tamil Nadu (southeast), Telangana (northeast), and Andhra Pradesh (east). The Arabian Sea forms the western boundary.
- **Four natural regions**: Karnataka divides into the Coastal Region (Karavali), Western Ghats (Malnad), Northern Plateau (Bayaluseeme), and Southern Plateau—each with distinct terrain, climate, and vegetation.
- **Western Ghats as a biodiversity hotspot**: The Sahyadri range runs north-south, acting as a climate barrier. It causes heavy rainfall on the western slopes and rain-shadow effect on the eastern plateau.
- **River systems are peninsular**: All major rivers (Krishna, Cauvery, Tungabhadra) are rain-fed, non-perennial, and flow eastward into the Bay of Bengal. Only west-flowing rivers like Sharavathi and Netravathi drain into the Arabian Sea.
- **Tropical monsoon climate**: Karnataka experiences three seasons—summer (March–May), monsoon (June–September), and winter (October–February). Rainfall varies from 4000+ mm in Malnad to less than 500 mm in north-central districts.
- **Rich mineral wealth**: Karnataka ranks first in India for gold production (Kolar Gold Fields) and is a major producer of iron ore, mangite, and granite.
---
Formulas / Key Facts
| Feature | Key Fact | |---------|----------| | **Area** | 1,91,791 sq km (6th largest state in India) | | **Highest peak** | Mullayanagiri (1,930 m) in Chikkamagaluru district | | **Longest river** | Krishna (entire length ~1,400 km; ~483 km in Karnataka) | | **Major west-flowing rivers** | Sharavathi, Netravathi, Kali, Gangavalli | | **Major east-flowing rivers** | Krishna, Cauvery, Tungabhadra, Bhima, Malaprabha, Ghataprabha | | **Jog Falls** | On Sharavathi River; 253 m drop; second-highest plunge waterfall in India | | **Highest rainfall district** | Udupi / Uttara Kannada (coastal Malnad belt) | | **Lowest rainfall district** | Raichur / Bagalkot (north-central plateau) | | **Major minerals** | Gold (Kolar, Raichur), iron ore (Bellary), manganese (Shimoga, Bellary), granite | | **Forest cover** | Approximately 20% of state area; evergreen and deciduous forests in Western Ghats |