Physical geography, resources and projects
2. Geological history and landforms
Jharkhand is a piece of the ancient peninsular shield, and its rocks explain where its resources lie: metals sit in the oldest crystalline rocks, while coal sits in much younger sediments that were dropped into troughs of the old surface.
| Rock group | Where | What it gave |
|---|---|---|
| Singhbhum craton: Archaean granites and gneisses with the Iron Ore Group, cut by the Singhbhum shear zone | East and West Singhbhum | Iron ore; copper and uranium along the shear zone |
| Chotanagpur granite-gneiss complex, with mica-bearing pegmatites | Most of the plateau: Ranchi, Hazaribagh, Koderma, Giridih | Undulating plateau surface; mica, feldspar, granite |
| Gondwana sediments (Permian coal measures; the Barakar Formation is the chief coal-bearer) kept in down-faulted troughs | Damodar valley; Auranga, Hutar and Daltonganj basins; Deoghar; Rajmahal | Coal |
| Rajmahal Traps: Mesozoic basalt lava flows | North-east: Sahibganj, Pakur, Godda, Dumka | Rajmahal hills; black soil |
| Laterite caps and river alluvium (youngest) | Pat region; Ganga fringe and valley floors | Bauxite on the plateau surfaces; fertile valley soils |
The state is largely the Chotanagpur plateau, a dissected, undulating surface; the Forest Survey of India counts no hill district. The state climate plan describes four levels that step down from west to east.
| Level | Approximate height | Where |
|---|---|---|
| Pat region (highest) | 800 to 1,100 m | North-western Ranchi and the southern edge of Palamu; Netarhat in Latehar is its best-known hill station |
| Ranchi plateau, and the surface across the Damodar trough | About 600 m | Separated from the surface of the same height by the Damodar trough |
| Lower Chotanagpur plateau | About 300 m | The outer, lower surface |
| Valleys, plains and low hills | 150 to 300 m | River valleys and the Rajmahal hills in the north-east |
- Parasnath (Giridih district, about 1,365 m) is the highest point of the state; Jains call it Sammed Shikhar and the Santals Marang Buru.
- Netarhat (Latehar) is the 'Queen of Chotanagpur'; Trikut (near Deoghar), the Dalma range (East Singhbhum, elephant habitat) and the Saranda hills (West Singhbhum, sal forest and iron ore) complete the list.
3. Drainage: river systems and waterfalls
Rivers rise on the plateau and radiate outward. They are rain-fed and seasonal, flow in narrow rocky valleys with little floodplain, and plunge over plateau scarps as waterfalls. Some go to the Ganga system (the Damodar and Mayurakshi through West Bengal, the North Koel through the Son); others reach the Bay of Bengal directly through Odisha and West Bengal (the Subarnarekha, and the South Koel as the Brahmani). The Ganga itself touches only the north-eastern edge, at Sahibganj and Pakur.
| River | Rises and flows in Jharkhand | Goes on to | Remember |
|---|---|---|---|
| Damodar | Rises on Khamarpat hill in Latehar (Palamu district before 2001); flows east down the Damodar trough through Ramgarh, Bokaro and Dhanbad | West Bengal; joins the Hooghly (about 592 km) | “Sorrow of Bengal”; Konar, Bokaro, Jamunia and Barakar join it |
| Barakar | Rises near Padma in Hazaribagh; Tilaiya dam is in Koderma and Maithon dam in Dhanbad | Joins the Damodar near Dishergarh, West Bengal | Chief tributary; the DVC's two dams stand on it |
| Subarnarekha | Rises near Nagri, Ranchi (about 600 m); flows through Ranchi, Seraikela-Kharsawan and East Singhbhum (Chandil, Jamshedpur, Ghatshila) | West Bengal and Odisha; Bay of Bengal near Talsari (about 395 km) | Kharkai (joins near Jamshedpur), Kanchi and Raru are tributaries; Hundru Falls |
| South Koel | Rises on the Ranchi-Lohardaga plateau and flows south | Odisha; meets the Sankh near Rourkela to form the Brahmani | Koel + Sankh = Brahmani, which reaches the Bay of Bengal |
| North Koel | Rises on the same plateau; flows through Latehar and Palamu, past Betla; Burha and Auranga join it | Joins the Son in Bihar | Flows north, unlike the South Koel |
| Mayurakshi | Rises on Trikut hill near Deoghar; the Massanjore (Canada) Dam is at Dumka | Enters West Bengal and flows into the Hooghly | Birbhum and Murshidabad lie on its course |
4. Climate, seasons and soils
Jharkhand has a humid subtropical climate in the north and a tropical wet-and-dry climate in the south-east. The state portal describes three seasons: a cold season from November to February, a hot season from March to mid-June, and the south-west monsoon from mid-June to October. The 2014 state climate plan says 80 to 82 per cent of the annual rain falls in the monsoon, and it gives the annual rainfall as 1,200 to 1,600 mm. Quote the range, because individual stations differ.
| Season | Months | What the sources say |
|---|---|---|
| Cold | November to February | The most pleasant part of the year; Ranchi's December days run from about 10 °C to the low 20s °C |
| Hot | March to mid-June | May is the hottest month, with highs near 37 °C and lows near 25 °C |
| Monsoon | Mid-June to October | Brings most of the rain; July and August carry nearly half the annual total |
The soils are formed from the weathering of the older rocks, so their distribution follows the geology. The portal lists five types.
| Soil | Where | Teaching point |
|---|---|---|
| Red | Damodar valley and Rajmahal area | The most widespread soil over the valleys |
| Micaceous | Koderma, Jhumri Telaiya, Barkagaon, around Mandar hill | Carries particles of mica from the granite-pegmatite rocks |
| Sandy | Hazaribagh and Dhanbad | Light soil that drains quickly |
| Black | Rajmahal area | Tied to the basalt of the Rajmahal area |
| Laterite | Western Ranchi, Palamu, parts of Santhal Pargana and Singhbhum | Found on weathered plateau surfaces |
5. Agriculture, irrigation and the valley projects
Agriculture depends on the monsoon. The 2014 state plan, citing older data, says about 43 per cent of the land is cultivated, cropping intensity is 117 per cent, and 92 per cent of the cultivated area has no irrigation. About 40 per cent of the cropped area is given to rice, much of it rain-fed upland (gora) and lowland rice. The percentages come from documents of 2009 to 2014 and must be quoted with that date.
The Damodar Valley Corporation (DVC) came into existence on 7 July 1948, India's first multipurpose river valley project. Its plan was cut from eight dams and a barrage to four dams and the Durgapur barrage. All four dams stand in Jharkhand; the Durgapur barrage is in West Bengal.
| Project | River and district | Status (date of the source) | Purpose |
|---|---|---|---|
| Tilaiya (DVC) | Barakar, Koderma | Opened 1953 | Flood control, water, power |
| Konar (DVC) | Konar, Hazaribagh | Opened 1955 | Flood control, water |
| Maithon (DVC) | Barakar, Dhanbad | Opened 1957 | Flood control, power |
| Panchet (DVC) | Damodar, Dhanbad | Opened 1959 in most sources (1958 in one) | Flood control, power |
| Tenughat (state, outside DVC) | Damodar, Bokaro | Built 1978 by the Bihar government | Water for Bokaro steel and industry |
| Chandil dam (Subarnarekha Multipurpose Project) | Subarnarekha, Seraikela-Kharsawan and East Singhbhum | 99% complete in 2009 Lok Sabha figures; a 2025 report calls the project incomplete | Power, irrigation, water |
| Icha dam (same project) | Kharkai, West Singhbhum | 30% complete in 2009 | Irrigation, drinking water |
| Massanjore (Canada) dam | Mayurakshi, Dumka | Commissioned 1955 with Canadian counterpart funds | Irrigation, power |
| Kutku (North Koel) dam | North Koel, inside Palamau Tiger Reserve | Work from 1972, halted 1993, cleared 2018, halted again in 2023 (report of March 2025) | Hydro-power and irrigation through barrages (proposed) |
The Subarnarekha Multipurpose Project, begun in 1982–83, plans two dams (Chandil on the Subarnarekha and Icha on the Kharkai), two barrages (Galudih and Ganjia) and canals. A 1977 parliamentary reply gave its design irrigation as 2.185 lakh hectares. The status figures are perishable: the 2009 Lok Sabha reply is the latest official figure found here, so check the Water Resources Department before using them.
6. Minerals and the mining belts
The state's minerals page (undated) says the state holds about 40 per cent of India's mineral resources. It ranks the state first in coal reserves, second in iron ore, third in copper ore and seventh in bauxite, and calls it the sole producer of prime coking coal. These ranks are the state's own claim, so quote them as such. Uranium at Jaduguda in Singhbhum is mined by the Uranium Corporation of India, set up in October 1967.
| Mineral | Main districts | Used for |
|---|---|---|
| Coal | Jharia, Bokaro, Karanpura, Hutar, Auranga, Daltonganj, Deoghar, Rajmahal fields | Fuel and coking |
| Iron ore | Singhbhum, Palamu | Iron and steel |
| Copper ore | Singhbhum, Giridih | Copper |
| Bauxite | Palamu, Ranchi, Gumla, Lohardaga | Aluminium, alum |
| Mica | Koderma, Giridih, Hazaribagh | Insulation, mica powder |
| Fireclay | Dhanbad, Hazaribagh, Palamu, Bokaro, Giridih, Ramgarh | Firebricks, stoneware |
| Limestone | Hazaribagh, Santhal Pargana, Palamu, Singhbhum, Ranchi | Lime, cement, fertiliser |
| Dolomite | Palamu, Garhwa | Cement, magnesia |
| China clay | Lohardaga, Ranchi, Dumka, Sahibganj, Singhbhum | Crockery, glass |
| Graphite | Palamu | Pencils, crucibles |
7. Population, tribes and the district pattern
The 2011 Census counted 32,988,134 people in Jharkhand (16,930,315 men and 16,057,819 women), a density of 414 per square kilometre. The urban share is 24.05 per cent and the rural share 75.95 per cent. Scheduled Tribes number 8,645,042, or 26.21 per cent. The Forest Survey of India counts 17 tribal districts. Census 2011 is used throughout because it is the last full census whose district figures this chapter could check.
| District | ST share (%) | Belt |
|---|---|---|
| Khunti | 73.25 | South Chotanagpur plateau |
| Simdega | 70.78 | South Chotanagpur plateau |
| Gumla | 68.94 | South Chotanagpur plateau |
| West Singhbhum | 67.31 | Kolhan |
| Lohardaga | 56.89 | South Chotanagpur plateau |
| Dumka | 43.22 | Santhal Pargana |
| Ranchi | 35.76 | South Chotanagpur plateau |
| Bokaro | 12.40 | North Chotanagpur coal belt |
| Dhanbad | 8.68 | North Chotanagpur coal belt |
| Chatra | 4.37 | North Chotanagpur |
| Koderma | 0.96 | North Chotanagpur, mica belt |
The tribal share is highest on the south-western plateau and in Kolhan, and lowest in the coal and mica belt of North Chotanagpur, where mining and industry drew migrants and diluted the tribal share. Tribal-majority districts are where the forest and land questions of JH-08 carry the most weight.
Density is highest in Dhanbad (about 1,300 per square km in 2011 tables) and lowest in the south-west, where Simdega is among the least dense districts (about 160). Decimals differ across sources, so teach the order and not the decimal.
Key takeaways
- Checked on 27 October 2026, the state portal lists 24 districts in 5 divisions. The state began with 18 districts; 2001 added four and September 2007 added two. Always date a district count.
- The plateau steps down from the Pat region (800 to 1,100 m) to the valley plains (150 to 300 m). Parasnath, about 1,365 m in Giridih, is the highest point.
- Damodar and Barakar drain to the Hooghly; the Subarnarekha and the South Koel (as the Brahmani) reach the Bay of Bengal through Odisha; the North Koel joins the Son. Lodh, about 143 m on the Burha, is the highest waterfall.
- Minerals follow geology: iron, copper and uranium in the Singhbhum craton, coal in the Damodar and Rajmahal basins, mica and fireclay on the north-western plateau.
- Four DVC dams opened between 1953 and 1959 (Panchet's year varies by source). The Subarnarekha Multipurpose Project was still incomplete in the latest official figures found, from 2009.
- Rain is seasonal: about 80 per cent falls in the monsoon, and under a tenth of the cultivated area was irrigated in the 2014 plan's data, so rain-fed farming dominates.
Practice questions (16)
Attempt each one before opening the answer. Every explanation names the tempting wrong option as well as the right one, because that is where marks are lost.
According to the JPSC homepage, how many districts did Jharkhand have when it was formed on 15 November 2000?
Show answer
Answer: B — 18
The JPSC homepage gives 18 districts at formation. Four districts were added in 2001 (Latehar, Simdega, Jamtara and Seraikela-Kharsawan), making 22, and Khunti and Ramgarh in September 2007 brought the total to 24, the count the state portal gives when checked on 27 October 2026. The 24 is the trap: it is today's count, not the count at formation.The state portal lists five divisions. Consider these statements about the district counts of the divisions:
P. Palamu has 3 districts.
Q. North Chotanagpur has 7 districts.
R. Kolhan has 5 districts.
S. Santhal Pargana has 6 districts.
Which of the statements are correct, as per the portal checked on 27 October 2026?Show answer
Answer: C — P, Q and S only
Palamu (3), North Chotanagpur (7) and Santhal Pargana (6) match the portal. Kolhan has 3 districts (West Singhbhum, Seraikela-Kharsawan and East Singhbhum), not 5, so R is wrong. The tempting key 'P and Q only' leaves out the correct Santhal Pargana count, which the portal lists as six districts.Match each district with the district it was carved out of in the 2001 and 2007 reorganisation: P. Khunti, Q. Ramgarh, R. Latehar, S. Simdega. Which matching is correct?
Show answer
Answer: B — P-Ranchi, Q-Hazaribagh, R-Palamu, S-Gumla
Khunti was carved out of Ranchi and Ramgarh out of Hazaribagh, both in September 2007. Latehar was formed from Palamu and Simdega from Gumla, both in April 2001. A common slip swaps the two 2001 parents: Latehar came out of Palamu and Simdega out of Gumla, and Simdega was a subdivision of Gumla until it became a district.According to the state portal's division list, which is the headquarters of the Kolhan division?
Show answer
Answer: C — Chaibasa
The portal gives Chaibasa as the Kolhan headquarters. Jamshedpur is the largest city of East Singhbhum but not the divisional headquarters, Seraikela is a district headquarters, and Medininagar is the headquarters of the Palamu division.Which plateau level of Jharkhand, standing about 800 to 1,100 metres above mean sea level, is the highest in the state's own climate plan?
Show answer
Answer: A — Pat region
The 2014 state plan puts the Pat region at 800 to 1,100 m, the Ranchi plateau at about 600 m, the lower Chotanagpur plateau at about 300 m, and the valleys and Rajmahal hills at 150 to 300 m. The Ranchi plateau is the trap: it is the largest plateau surface, but it is lower than the Pat.According to the state portal, the micaceous soil of Jharkhand is found in which of the following areas?
Show answer
Answer: B — Koderma, Jhumri Telaiya and Mandar hill
The portal places micaceous soil in Koderma, Jhumri Telaiya, Barkagaon and around Mandar hill. Hazaribagh and Dhanbad have sandy soil, the Rajmahal area has black soil, and West Ranchi and Palamu have laterite.In the state portal's climate description, which month is called the hottest, with daily highs near 37 °C?
Show answer
Answer: C — May
The portal names May as the hottest month, with highs near 37 °C and lows near 25 °C. June is the trap: the highest temperature on record in the 2014 plan (46.5 °C) fell in June 2010, but that is a single extreme, not the typical hottest month the question asks for.Consider these statements about the high points of Jharkhand:
P. Parasnath is the highest point in the state.
Q. Netarhat is the highest point in the state.
R. Netarhat lies in Latehar district.
Which are correct?Show answer
Answer: A — P and R only
Parasnath, about 1,365 m in Giridih district, is the highest point. Netarhat is a hill station in Latehar on the Pat plateau, but it is not the highest point, so Q is wrong. R is true. The tempting 'P only' fails because R is also correct.Which rock formation hosts the coal of Jharkhand's major coalfields, in the standard geological account?
Show answer
Answer: D — Gondwana sediments
Coal lies in the Gondwana sediments, deposited in down-faulted basins such as the Damodar trough. The Iron Ore Group is the host of iron ore, the Rajmahal Traps are Mesozoic lava flows, and the Chotanagpur gneiss is crystalline basement, which holds no coal.Which river flows north and joins the Son in Bihar?
Show answer
Answer: A — North Koel
The North Koel flows north and joins the Son near the Jharkhand-Bihar border. The South Koel goes south into Odisha to form the Brahmani with the Sankh, the Subarnarekha reaches the Bay of Bengal, and the Barakar joins the Damodar.Consider these statements about the rivers of Jharkhand:
P. The South Koel joins the Sankh near Rourkela to form the Brahmani.
Q. The North Koel joins the Brahmani.
R. The Subarnarekha reaches the Bay of Bengal.
S. The Damodar is a tributary of the Mahanadi.
Which statements are correct?Show answer
Answer: B — P and R only
The South Koel and Sankh meet near Rourkela to form the Brahmani, and the Subarnarekha reaches the Bay of Bengal near Talsari. The North Koel joins the Son, not the Brahmani, and the Damodar drains east to the Hooghly, not to the Mahanadi.Which is the highest waterfall in Jharkhand, lying on the Burha river in Latehar district?
Show answer
Answer: C — Lodh
Lodh falls about 143 m and is described as the highest in the state. Hundru, on the Subarnarekha, falls about 98 m, and Dassam, on the Kanchi, about 44 m. Jonha is known for its steps rather than its height.Consider these dam-and-river pairings: P. Tilaiya dam on the Barakar, Q. Massanjore dam on the Mayurakshi, R. Chandil dam on the Subarnarekha, S. Maithon dam on the Damodar. Which of the pairings are correct?
Show answer
Answer: B — P, Q and R only
Tilaiya is on the Barakar, Massanjore on the Mayurakshi near Dumka, and Chandil on the Subarnarekha. Maithon is on the Barakar, not the Damodar, so S is wrong; that swap is the one the exam uses.Arrange these DVC dams in the order in which they were first opened: Panchet, Konar, Tilaiya, Maithon.
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Answer: D — Tilaiya, Konar, Maithon, Panchet
Tilaiya opened in 1953, Konar in 1955, Maithon in 1957 and Panchet in 1959 (1958 in one source). Panchet comes last on either date. The tempting order puts Maithon before Konar, which reverses two dates that differ by only two years.The table gives the area and the 2011 population of four districts: Dhanbad, area 2,040 sq km, population 2,684,487; Ranchi, 5,097 sq km, 2,914,253; Lohardaga, 1,502 sq km, 461,790; Gumla, 5,360 sq km, 1,025,213. Using the table alone, which district has the highest population density?
Show answer
Answer: D — Dhanbad
Density is population divided by area: Dhanbad 2,684,487 / 2,040 is about 1,316 per sq km; Ranchi 2,914,253 / 5,097 about 572; Lohardaga 461,790 / 1,502 about 307; Gumla 1,025,213 / 5,360 about 191. Ranchi is the trap: it has the largest population, but its area is far larger.Which of these coalfields is NOT listed among Jharkhand's coal reserves on the state minerals page?
Show answer
Answer: B — Korba
The page lists Jharia, Bokaro, Karanpura, Hutar, Auranga, Daltonganj, Deoghar and Rajmahal. Korba is a coalfield of Chhattisgarh, so it is not among the Jharkhand fields in this list.