Sand Mining in Riverbeds: The Real Environmental Consequences

A river carries sand down from the hills. That sand settles on the bed. People dig it out for concrete and roads. Dig too much, and the river loses more than sand.

This lesson covers what goes wrong. It then covers who makes the rules, the penalties, and how UPSC asked about it.

1.1 What happens to the riverbed?

Mining becomes harmful when it takes out more than the river brings in. The official guidelines say this makes the bed lower, upstream and downstream of the spot.

A lower bed brings more problems: – Bank erosion: banks get taller and then collapse. – Damaged structures: bridge supports and pipelines can be undermined. – Lost habitat: more mud in the water blocks light, and plants and fish lose food.

Replenishment means the sand a river brings down from upstream each year.

1.2 Why does sand mining lower the water table?

A river and the ground beside it are linked. In many places, water in the floodplain aquifer drains toward the stream. An aquifer is a layer of rock or sand that holds underground water.

When mining lowers the bed, the river level falls. The groundwater beside it then drains faster. So the water table drops.

The guidelines also warn about the pits left behind. Pumping water out of mined channels can dry up wells. In extreme cases, the ground can crack or sink.

Memory hook: lower bed, lower river, lower water table.

1.3 Why does it pollute groundwater?

Riverbed sand works like a filter. Water passes through it on its way underground. The layer cleans the water first.

The guidelines name two ways mining spoils this filter: – Mining makes the filter layer thinner, especially over recharge cracks. – Fine material dumped in the channel chokes the sand layer, and heavy vehicles press it down.

Once the filter is thin or blocked, dirty water reaches the aquifer more easily.

1.4 What is not on the list of effects?

The official lists of damage include a lower bed, lost habitat, a lower water table and polluted water. Lower salinity of the river is not on either list. Salinity means the amount of salt in water.

Common mistake: picking “decreased salinity” because it sounds like a natural result of a changed river. No document opened lists it.

Sand does not belong to one national law of its own. The rules sit in two layers.

2.1 Is sand a major or a minor mineral?

Sand is a minor mineral. Section 3(e) of the Mines and Minerals (Development and Regulation) Act, 1957 (the MMDR Act) defines minor minerals.

Section 15 lets State governments make rules for minor mineral leases. Section 23C lets them make rules to stop illegal mining, transport and storage. So control of sand mining sits with the States.

Common mistake: saying the Centre grants sand leases. It does not. The States do.

2.2 What does the Centre do?

The Centre sets guidelines. It does not grant leases. Three bodies matter:

• MoEFCC issued the Sustainable Sand Mining Management Guidelines, 2016, and the Enforcement and Monitoring Guidelines for Sand Mining, 2020.
• The Ministry of Mines prepared a Sand Mining Framework with the States and sent it to all of them.
• The Ministry of Mines, with the Indian Bureau of Mines, built a Mining Surveillance System. It uses space technology to catch illegal mining.

Legal sand mining also needs an environmental clearance (EC). For sand, the State Environment Impact Assessment Authority (SEIAA) grants it. It uses the EIA Notification of 14 September 2006.

3.1 What is the penalty for mining without a licence?

Section 4 of the MMDR Act bars mining without a licence or lease. Section 21(1) sets the penalty for breaking that rule. It is up to five years in prison. The fine is up to five lakh rupees per hectare of the area.

Read the last words with care. The fine is per hectare, not a flat cap.

Common mistake: remembering “5 years and 5 lakh” as a fixed pair. The fine is counted per hectare.

3.2 What is a District Survey Report?

A District Survey Report (DSR) maps a district’s sand sources. It shows how much a stretch of river can lose and where mining should be kept out. A DSR is valid for five years.

The 2016 EIA changes made the DSR the base for any clearance. A draft DSR is not enough.

3.3 What did the Supreme Court decide in 2025?

On 8 May 2025, the Supreme Court dismissed Uttar Pradesh’s appeals. The Saharanpur District Magistrate had issued an e-auction notice on 13 February 2023 for riverbed sand. The National Green Tribunal (NGT) had held that notice illegal. The Supreme Court agreed.

The Court said: – A valid and subsisting DSR alone can be the base for an environmental clearance. – A draft DSR cannot support a clearance. – It called for zero tolerance of unauthorised sand mining.

So the order is survey first, clearance second, auction third.

4.1 What is M-sand?

M-sand is manufactured sand. Crushers make it from quarry waste and rock. It can stand in for river sand in construction.

River sand is liked for concrete because its grains are rounded. The guidelines say desert sand is mostly unfit for concrete. Wind wear makes its grains round in a way that does not bind well.

Common mistake: thinking any sand will do. Grain shape decides how well sand binds.

4.2 What did Maharashtra do in 2025?

On 13 May 2025, the Maharashtra Cabinet cleared a policy to push M-sand in construction. Reports called it mandatory. The government release asks government, semi-government and public bodies to use M-sand on priority.

The policy cuts the royalty on M-sand units from Rs 600 to Rs 200 per brass. It also asks that M-sand follow the Bureau of Indian Standards norm IS 383:2016.

4.3 How do Kerala and Himachal Pradesh differ?

Two States moved in the other direction on river sand.

• Kerala: river sand mining stopped in 2016. On 21 May 2025, the Revenue Department approved guidelines to resume it. They follow EMGSM 2020 and need a DSR for each district.
• Himachal Pradesh: a mineral policy released in February 2024 lets heavy machines such as JCB and Poclain dig. They may take riverbed material up to 1 to 2 metres deep. It replaced the 2013 policy, and Kangra environment groups objected.

The same national guidelines produce different State rules.

5.1 What did UPSC ask in 2018?

UPSC CSP 2018, Paper I, Question 81 asked for the possible consequences of heavy sand mining in riverbeds. The options were:

1. Decreased salinity in the river. 2. Pollution of groundwater. 3. Lowering of the water table.

The answer is (b), 2 and 3 only. Statement 1 is the trap.