⚠️ Natural Hazards of UP

Introduction

Uttar Pradesh is vulnerable to multiple natural hazards because different parts of the state face very different physical conditions. The easiest way to remember this lesson is through regional pairing:

• north and north-east: stronger seismic and flood vulnerability
• east: major river floods
• Bundelkhand: drought and water stress
• plains in general: heat waves, cold waves, and dense fog

Once that pattern is clear, the rest of the lesson becomes much easier to retain.

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Seismic Zones of UP

India is divided into 4 seismic zones (II to V), with Zone V being the most seismically active. UP falls primarily in Zones II, III, and IV.

Zone-wise Distribution

Seismic Zone	Risk Level	Areas in UP
Zone IV	High Damage Risk	Northern UP — parts of Indo-Gangetic plain near Nepal border (Gorakhpur, Bahraich, Lakhimpur Kheri, Maharajganj)
Zone III	Moderate Damage Risk	Most of UP — Lucknow, Kanpur, Varanasi, Prayagraj, Meerut, Agra
Zone II	Low Damage Risk	Southern UP — Bundelkhand, parts of Vindhyan region

Key Earthquake Facts

Fact	Detail
Most vulnerable zone	Zone IV — northern districts along Nepal border
Reason for risk	Proximity to Main Boundary Thrust (MBT) of Himalayas
Historical earthquake	1934 Bihar-Nepal Earthquake (8.1 M) — felt severely across eastern UP
2015 Nepal Earthquake	7.8 M — significant damage in northern UP districts
Building codes	BIS (Bureau of Indian Standards) seismic design codes apply

Northern UP districts in Zone IV are at risk because they sit on deep alluvial deposits that amplify seismic waves — a phenomenon called site amplification.

The key earthquake idea is not that UP lies in the most extreme national zone, but that northern alluvial districts can still feel stronger shaking because of both Himalayan influence and site amplification.

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Floods — Eastern UP's Annual Challenge

Flooding is the most frequent and destructive natural hazard in Uttar Pradesh, primarily affecting the eastern and central regions.

Flood-Prone River Basins

River	Origin	Flood-Prone Districts
Ghaghra (Sarayu)	Tibet/Nepal	Bahraich, Barabanki, Ayodhya, Azamgarh
Rapti	Nepal	Gorakhpur, Deoria, Maharajganj
Gandak	Nepal	Kushinagar, Deoria
Sharda (Mahakali)	Nepal	Lakhimpur Kheri, Pilibhit
Ganga	Uttarakhand	Varanasi, Prayagraj, Ballia
Gomti	Pilibhit (UP)	Lucknow, Jaunpur
Yamuna	Uttarakhand	Agra, Mathura (occasional)

Why Eastern UP Floods Annually

• Rivers originate in Nepal Himalayas — carry enormous volume during monsoon
• Flat terrain with gentle gradient — water cannot drain quickly
• Silting raises riverbeds — rivers overflow banks easily
• Deforestation in Nepal catchments increases runoff
• Large parts of eastern and central UP are treated as flood-prone in standard hazard summaries

Flood Impact

Impact	Detail
Annual affected population	~2–3 crore people
Crop damage	Kharif crops (rice, maize) destroyed annually
Infrastructure	Roads, bridges, embankments damaged
Displacement	Lakhs displaced every monsoon season
Waterborne diseases	Cholera, typhoid, diarrhea spike during/after floods

This is one of the strongest geography contrasts in UP:

• eastern UP suffers from too much monsoon water
• Bundelkhand suffers from too little stored water

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Droughts — Bundelkhand's Chronic Crisis

While eastern UP battles floods, Bundelkhand faces the opposite extreme — recurring droughts.

Drought-Prone Districts

District	Division	Key Issue
Jhansi	Jhansi	Rocky terrain; poor groundwater
Lalitpur	Jhansi	Very low irrigation coverage
Jalaun	Jhansi	Ravine erosion; thin soil
Hamirpur	Chitrakoot	Water scarcity; migration
Mahoba	Chitrakoot	Historical tanks silted
Banda	Chitrakoot	Most drought-affected; extreme heat
Chitrakoot	Chitrakoot	Forested but water-scarce

Causes of Drought

• Rainfall: 75–100 cm (below state average of ~110 cm)
• Rocky/impervious soil — poor groundwater recharge
• Deforestation and degradation of catchment areas
• Traditional Chandela-era tanks have silted up
• Over-extraction of limited groundwater

Government Response

Initiative	Purpose
Bundelkhand Package (2009, 2012)	Drought relief, water conservation
Ken-Betwa River Link	Long-term water transfer solution
MGNREGA	Employment during drought years
PM Krishi Sinchai Yojana	Micro-irrigation expansion
Watershed Development	Rainwater harvesting, check dams

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Heat Waves (लू / गर्म लहर)

Heat waves are a life-threatening hazard in UP, particularly in western UP and Bundelkhand.

Heat Wave Criteria (IMD Definition)

Category	Plain Areas	Hilly Areas
Heat Wave	Max temp ≥ 40°C and departure ≥ 4.5°C from normal	Max temp ≥ 30°C with same departure
Severe Heat Wave	Max temp ≥ 40°C and departure ≥ 6.5°C from normal	—

Most Affected Areas

District	Peak Temperature	Period
Banda	47–48°C	May–June
Jhansi	46–47°C	May–June
Agra	45–46°C	May–June
Prayagraj	45–47°C	May–June

Impact

• Hundreds of heat-related deaths reported annually
• Crop wilting — especially late Rabi crops
• Water demand spikes; borewells dry up
• Power grid strain from air conditioning demand

Heat waves should be remembered together with the climate lesson: they intensify where summer heat, dryness, and Loo conditions are strongest.

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Cold Waves (शीत लहर)

Feature	Detail
Period	December – February (peak in January)
Criteria	Min temp ≤ 10°C and departure ≥ 4.5°C below normal
Most affected	Western UP — Meerut, Agra, Muzaffarnagar
Lowest temperatures	1–3°C recorded in western UP
Impact	Hypothermia deaths among homeless; Rabi crop frost damage

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Dense Fog (कोहरा)

Feature	Detail
Period	December – January
Worst affected	Gangetic Plain — Lucknow, Varanasi, Kanpur, Agra
Visibility	Drops to below 50 meters in severe events
Duration	Can persist for 12–18 hours continuously
Transport impact	Hundreds of trains delayed; flights cancelled; road accidents
Agriculture impact	Delays wheat flowering; promotes fungal diseases

Fog is a classic Gangetic plain hazard because winter moisture, low temperature, and calm wind often combine over the flat plains.

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Disaster Management Framework

National Level

Body	Role
NDMA (National Disaster Management Authority)	Policy, plans, guidelines
NDRF (National Disaster Response Force)	Specialized rescue and relief
IMD (India Meteorological Department)	Weather warnings, forecasts
CWC (Central Water Commission)	Flood forecasting

State Level

Body	Role
UPSADMA (UP State Disaster Management Authority)	State-level disaster planning
SDRF (State Disaster Response Force)	State rescue operations
Relief Commissioner	Coordinates flood/drought relief
District Magistrate	District-level disaster management head

NDRF Battalions in UP

Location	Battalion	Covers
Varanasi	9th Battalion NDRF	Eastern UP
Ghaziabad	8th Battalion NDRF	Western UP

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Hazard Summary Matrix

Hazard	Most Affected Region	Peak Period	Primary Cause
Earthquake	Northern UP (Zone IV)	Any time	Himalayan tectonic activity
Floods	Eastern UP	July–September	Nepal-origin river flooding
Drought	Bundelkhand (7 districts)	June–September (failure)	Low/erratic rainfall + rocky terrain
Heat Wave	Western UP, Bundelkhand	May–June	Loo winds from Thar Desert
Cold Wave	Western UP	December–January	Central Asian cold air incursion
Fog	Gangetic Plain	December–January	High moisture + low temperature + calm winds

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Summary Cheat Sheet

Term	Quick Recall
Seismic Zone IV in UP	Northern districts (Gorakhpur, Bahraich, Kheri)
Most of UP	Seismic Zone III
Flood pattern	Eastern and central UP are the most flood-prone belts
Key flood rivers	Ghaghra, Rapti, Gandak (Nepal origin)
Drought region	Bundelkhand (7 districts)
Hottest district	Banda (~48°C)
Heat wave threshold	≥40°C + 4.5°C above normal
Cold wave threshold	≤10°C + 4.5°C below normal
Fog months	December–January
NDRF in UP	8th Bn (Ghaziabad), 9th Bn (Varanasi)
State disaster body	UPSADMA