30 September 2026
Heavy rainfall in Nepal's Gandak basin pushed the Gandak to 91.25 metres at Bagaha in West Champaran, above the previous highest flood level of 90.90 metres set on 29 September 2024, the Bihar Water Resources Department said. The river's highest flood discharge of 2026, 5,43,500 cusecs (5.435 lakh), had been recorded at Valmikinagar on 28 September. Embankments were breached in Saran and Gopalganj (Sheetalpur-Banjariya), and a ring embankment of the Tirhut Main Embankment breached in Muzaffarpur. More than 200 villages were affected, and the Chief Minister made an aerial survey of West Champaran to direct relief and rescue operations.
Record level at Bagaha:
91.25 metres
Previous high (29 Sep 2024):
90.90 metres
Peak 2026 discharge at Valmikinagar (28 Sep):
5,43,500 cusecs
Villages affected:
More than 200
Why it matters for exams: Transboundary rivers, barrages and embankments of north Bihar are core disaster-management and geography topics.
UPSC
In plain words
Cusec Cubic feet per second — A unit of river discharge.
Barrage Gated river structure — It regulates the flow of water downstream.
30 September 2026
The India Meteorological Department's end-of-season figures put the June to September 2026 southwest monsoon rainfall at 759.4 mm against a long period average of 868.6 mm.
That is 87 per cent of the long period average, a deficit of about 13 per cent, and the lowest seasonal rainfall since 2015.
It is the fourth-lowest monsoon since 2001 and the thirteenth-lowest since 1901.
East and Northeast India recorded 1,017 mm, or 74 per cent of its average, the region's lowest monsoon rainfall since 1901, while the South Peninsula got 542 mm, or 76 per cent.
Northwest India was at 94 per cent and Central India at 97 per cent of their averages.
Of the 36 meteorological subdivisions, 18 had normal rainfall, 17 were deficient and Odisha alone was in the excess category.
June was the weakest month at 65 per cent of normal, July was at 101 per cent, August at 84 per cent and September at 92 per cent.
Season rainfall:
759.4 mm
Long period average:
868.6 mm
Share of the average:
87 per cent
East and Northeast India:
1,017 mm, 74 per cent of average
Subdivisions:
18 normal, 17 deficient, 1 excess, of 36
Why it matters for exams: Seasonal monsoon percentages, the long period average and the subdivision count are asked almost every year in geography and environment sections.
Kerala PSCUPSCSSC
In plain words
LPA Long Period Average — The average rainfall over a long reference period, against which a season's rainfall is measured.
IMD India Meteorological Department — The national weather agency, under the Ministry of Earth Sciences, that issues India's monsoon statements.
Subdivision Meteorological subdivision — One of the 36 regions into which the IMD divides India for rainfall reporting.
30 September 2026
West Bengal Chief Minister Suvendu Adhikari announced an allocation of Rs 1,200 crore for the Ghatal Master Plan in the current financial year. The flood control project is estimated to cost about Rs 1,500 crore in all, shared equally between the Centre and the state. It covers 11 blocks and five municipalities across Purba and Paschim Medinipur, an area of 1,659 sq km, spanning five assembly and three Lok Sabha constituencies. Excess water is to be channelled through canals and rivers into the Rupnarayan, the main drainage outlet. The plan was first drawn up in the 1970s at an estimated Rs 50 crore and had not been executed for about 50 years. The Chief Minister said work should be carried out on a war footing after Durga Puja and completed by June next year, before the monsoon begins.
Allocation this financial year:
Rs 1,200 crore
Total project cost:
About Rs 1,500 crore
Area covered:
1,659 sq km
Main drainage outlet:
Rupnarayan river
Original 1970s estimate:
Rs 50 crore
Why it matters for exams: River names, flood control plans and centre-state cost sharing are regularly combined in a single question.
Kerala PSCUPSC
In plain words
Master plan Flood control master plan — A single engineering plan covering drainage, embankments and channels for a whole flood-prone basin.
Block Community development block — The administrative unit below a subdivision in Indian districts, used for rural development work.
30 September 2026
Nature published on 30 September 2026 a study from the Centre for Ecology and Conservation at the University of Exeter showing that butterfly wing markings work together with flight dynamics to create illusory motion.
High-speed video of take-offs filmed at 1,000 frames per second showed that patterned wings produced significantly greater motion confusion than unpatterned treatments.
A phylogenetically controlled analysis of 757 morphotypes across 397 European butterfly species found the effect to be an evolutionarily widespread strategy.
Digital evolution experiments using genetic algorithms, selecting only for motion confusion, independently produced high-contrast butterfly-like wing patterns.
In a touch-screen test with 100 human participants over 3,000 trials, attacks fell further behind the butterfly as forwards confusion rose: between the most and the least confusing species tested, the centre of attacks shifted backwards by about 38 per cent of average body length.
The authors describe the combination as potentially one of the most successful visual defence strategies in moving animals.
Species in phylogenetic analysis:
397 European butterfly species
Backward shift in attack centre, most vs least confusing species:
about 38 per cent of average body length
Institution:
University of Exeter
Why it matters for exams: Camouflage and mimicry are standard ecology topics, and this gives a dated primary study with precise numbers.
Kerala PSCUPSC
In plain words
phylogenetic analysis phylogenetic analysis — A method that compares species along their evolutionary family tree to test whether a trait is widespread or isolated.
30 September 2026
Nature published on 30 September 2026 a study that reclassifies Westlothiana lizziae, one of the best known fossils from East Kirkton in West Lothian, Scotland.
The specimen dates to the Early Carboniferous, in the Visean stage.
It had been widely cited as the earliest terrestrially adapted stem amniote, that is a land-adapted close relative of the amniotes; the new phylogenetic analyses return it instead as a stem tetrapod.
The evidence includes unexpected plesiomorphies of the skull roof, palate, braincase and mandible, together with aquatic adaptations such as an ossified internal gill skeleton and extensive denticles on the palate and mandible.
The authors conclude that terrestrial adaptations, including an amniote-like pedal formula, the loss of fin-like forelimb function and superficially claw-like terminal phalanges, evolved in a mosaic fashion in a transitional, amphibious context before the origin of the tetrapod crown group.
Fossil:
Westlothiana lizziae
Site:
East Kirkton, West Lothian, Scotland
Age:
Early Carboniferous (Visean)
Why it matters for exams: The water-to-land transition is standard biology and the item supplies the exact fossil, the place and the geological stage.
Kerala PSCUPSC
In plain words
tetrapod four-limbed vertebrate — The group of vertebrates with four limbs, including amphibians, reptiles, birds and mammals.
amniote amniote — A vertebrate whose embryo develops in a fluid-filled amniotic sac, allowing reproduction away from water.
30 September 2026
Singareni Collieries Company Limited and TGGENCO have drawn up a plan to supply 75,500 tonnes of coal a day to the State's thermal power plants.
Of this, 56,000 tonnes a day will move by 14 railway rakes and 19,500 tonnes a day by road.
Daily requirements are Yadadri 34,000 tonnes, Kothagudem 24,000 tonnes, Bhadradri 15,000 tonnes and Kakatiya 4,500 tonnes.
About 15.02 lakh tonnes were supplied to TGGENCO plants up to 28 September, against 11.44 lakh tonnes in the same period last year.
Officials link the higher demand to dry conditions associated with El Nino.
Daily coal plan:
75,500 tonnes
By rail:
56,000 tonnes (14 rakes)
By road:
19,500 tonnes
Supplied up to 28 September:
15.02 lakh tonnes
Why it matters for exams: Singareni and state power generation are staple Telangana economy and energy topics.
Kerala PSCUPSC
In plain words
SCCL The Singareni Collieries Company Limited — Coal-mining company serving Telangana's coal belt.
TGGENCO Telangana Power Generation Corporation — The State's power generation company that runs the thermal plants.
30 September 2026
On 30 September 2026 five new projects of the Kerala Forest Development Corporation were inaugurated at the Mascot Hotel, Thiruvananthapuram.
The SHOLA brand (Seek-Hike-Observe-Lodge-Absorb) offers workation facilities at Gavi and Suryanelli, described as the first workation in the government sector in Kerala.
The corporation also launched ATMA, a brand for tea and coffee grown on its plantations.
Work began on a premium pod stay at Vagamon, where four pods are due by December.
A 'Travel Today Pay Tomorrow' instalment scheme for trips and eco-guide training for nature interpretation also started.
Brand:
SHOLA
Workation sites:
Gavi and Suryanelli
Tea and coffee brand:
ATMA
Vagamon pods:
Four, due December
New projects launched:
Five
Why it matters for exams: Forest-based tourism schemes and the role of the Kerala Forest Development Corporation are recurring Kerala PSC topics.
Kerala PSCUPSC
In plain words
Workation Work + vacation — Working remotely from a holiday destination.
KFDC Kerala Forest Development Corporation — A State public sector body that runs forest plantations and forest-based ventures.
30 September 2026
Wayanad will be declared an e-waste-free institutional district on 2 October 2026, Onmanorama reported on 30 September.
The drive is led by local self-government institutions, the Suchitwa Mission and the Clean Kerala Company.
Taluk-level collection centres have been set up so that items such as fluorescent tubes, CFL bulbs and lithium batteries do not pollute soil and water.
Minister T Siddique announced the plan at a meeting with district officials.
ETV Bharat reports that the wider district drive begins on 1 November 2026, with Haritha Karma Sena assisting collection.
District:
Wayanad
Declaration date:
2 October 2026
Lead agencies:
Suchitwa Mission, Clean Kerala Company
Why it matters for exams: Links waste management, local self-government and the work of Suchitwa Mission and Clean Kerala Company.
Kerala PSCUPSC
In plain words
E-waste Electronic waste — Discarded electrical and electronic equipment such as computers, phones and batteries.
Haritha Karma Sena Haritha Karma Sena — The green task force that collects waste from households and institutions for local bodies.
30 September 2026
The National Biodiversity Authority (NBA) will mark its 23rd Foundation Day on 1 October 2026, and the Ministry of Environment, Forest and Climate Change released a note on 30 September. Since 2008, over Rs. 278 crore has been realised through Access and Benefit Sharing (ABS), and more than Rs. 200 crore has been disbursed for biodiversity conservation and community benefits. The NBA works through a three-tier structure: the NBA nationally, State Biodiversity Boards and Union Territory Biodiversity Councils, and Biodiversity Management Committees at the local level. The disbursements have supported over 10,500 Biodiversity Management Committees, 28 State Biodiversity Boards and 7 Union Territory Biodiversity Councils. Around Rs. 100 crore has been released for Red Sanders conservation through the Andhra Pradesh Forest Department and State Biodiversity Board.
Realised through ABS since 2008:
over Rs. 278 crore
Biodiversity Management Committees supported:
over 10,500
State Biodiversity Boards supported:
28
Union Territory Biodiversity Councils supported:
7
Why it matters for exams: The NBA and the three-tier biodiversity governance structure are standard environment-law questions in UPSC and Kerala PSC papers.
Kerala PSCUPSC
In plain words
ABS Access and Benefit Sharing — Users of biological resources share the benefits with the providers and local communities.
BMC Biodiversity Management Committee — The local-level body in the NBA's three-tier structure.
30 September 2026
A Supreme Court bench headed by Justice MM Sundresh heard the long-pending 2015 firecracker petition on 30 September 2026. The Court said it would neither accept a total ban nor allow bursting through the whole day. It proposed fixed time windows for approved firecrackers during Diwali, balancing religious sentiments against the health of children, the elderly and the ill. The Court was open to permitting joint firecrackers (ladis) under conditions. At the request of the Additional Solicitor General, it allowed time until 15 October 2026 for the results of outdoor testing of barium in green firecrackers. Delhi-NCR rules were left to be heard with the overlapping MC Mehta case.
Bench:
Justice MM Sundresh
Time allowed for barium test results:
15 October 2026
Petition filed:
2015
Why it matters for exams: Links Article 21 and environmental jurisprudence with Article 25 religious sentiments, a recurring polity and environment theme.
Kerala PSCUPSC
In plain words
Green firecrackers Low-emission firecrackers — Crackers formulated to emit less particulate matter than conventional ones.
Barium Barium compounds in crackers — A chemical used for green colour in fireworks and a focus of the emission testing.
30 September 2026
UNESCO lists 'The wider area of Mount Olympus' as a World Heritage property inscribed in 2026. It lies in northern Greece and holds the country's highest peak. The listing cites criteria (vi) and (x) and covers 18,938 hectares. Glacial cirques, limestone cliffs and karst sinkholes mark the site, which is a glacial refugium for forest species and a Mediterranean biodiversity hotspot with significant plant endemism. It is the legendary home of the Twelve Olympian Gods.
Property:
The wider area of Mount Olympus
Year inscribed:
2026
Area:
18,938 hectares
Criteria:
(vi)(x)
Why it matters for exams: New World Heritage inscriptions are regular current-affairs questions.
Kerala PSCUPSC
Background
Sikkim became India's first fully organic state in 2016, banning chemical fertilizers and pesticides. It became the 22nd state of India in 1975. It is India's second smallest state in area and its least populous, with Gangtok as capital. Sikkim shares international borders with Nepal, Bhutan and China. Khangchendzonga National Park is India's 1st UNESCO Mixed World Heritage Site.
Fully organic:
2016
Became a state:
1975 (22nd state)
Capital:
Gangtok
Borders:
Nepal, Bhutan, China
Why it matters for exams: India's first fully organic state and Sikkim's basic profile are among the most repeated questions on the state.
Kerala PSCUPSC
Background
Tsomgo Lake, also known as Changu Lake, is situated at 12,313 feet above sea level in East Sikkim. It lies in the high-altitude Himalayan region near Nathu La Pass and is reached via Gangtok. Local folklore says the lake was formed from the tears of the gods, who wept on discovering the plight of local villagers. It is considered sacred by the indigenous Sikkimese people.
Altitude:
12,313 feet
Also known as:
Changu Lake
Region:
East Sikkim, near Nathu La
Why it matters for exams: Lakes of Sikkim and their alternate names are direct-recall geography items.
Kerala PSCUPSC
Background
Gurudongmar Lake lies in Mangan district, Sikkim, at 17,800 feet above sea level, among the highest lakes in India. The page lists it as a source of the Teesta River. It is a sacred pilgrimage destination for Buddhists and Sikhs. According to legend, Guru Padmasambhava blessed a portion of the lake so that it would never freeze completely. The nearest airports are Bagdogra and Pakyong.
Altitude:
17,800 feet
District:
Mangan
River:
Teesta
Why it matters for exams: High-altitude lakes and the origin of the Teesta are recurring geography questions.
Kerala PSCUPSC
Background
The Sikkim State Disaster Management Authority held State Disaster Risk Reduction Day 2026 at Chintan Bhawan, Gangtok, on the theme 'Prepared Children, Resilient Future'. The chief guest recalled the Sikkim earthquake of 18 September 2011 as a lasting reminder of the State's vulnerability. He said the 2023 Glacial Lake Outburst Flood further highlighted the changing and complex nature of risks in the Himalayan region. Under the Friday Safety Five programme, schools, ICDS centres and Anganwadi centres give five minutes every Friday to mock drills, hazard identification and evacuation practice. A longitudinal study, 'From Multi-Hazard Risk to Resilience', was launched with Amrita University, IIT Roorkee and Sikkim University.
Recalled:
Earthquake of 18 September 2011
Friday Safety Five:
5 minutes every Friday
Venue:
Chintan Bhawan, Gangtok
Why it matters for exams: Disaster management authorities, drills and Himalayan hazards (earthquake, GLOF) are staple topics.
Kerala PSCUPSC
30 September 2026
Congress general secretary Jairam Ramesh said on 30 September 2026, citing a media report, that the Union government has approached the Supreme Court seeking a stay on proceedings in the Calcutta High Court on petitions challenging the Great Nicobar Island Project.
According to Ramesh, the Calcutta High Court had upheld the right of a petitioner to file her challenge, which the Centre had questioned.
The project includes a proposed transhipment port at Galathea Bay; Ramesh says its cost has been revised upward from Rs 72,000 crore to Rs 92,000 crore.
The Congress argues that the port could cause large-scale ecological damage, including destruction of coral colonies, and one of the petitions concerns violations of the Forest Rights Act, 2006.
Five petitions are pending in the Calcutta High Court; the final hearing in the Forest Rights Act petition is fixed for 25-26 November 2026, Ramesh said.
He said 5 October 2026 is the likely date on which the Supreme Court will hear the Centre's plea.
Port site:
Galathea Bay
Project cost:
Rs 92,000 crore (figure cited by Congress)
Final hearing, Calcutta High Court:
25-26 November 2026
Why it matters for exams: The Great Nicobar project links strategic infrastructure, the Forest Rights Act 2006 and coastal ecology, all favourites in GS and environment papers.
Kerala PSCUPSC
30 September 2026
Union Environment Minister Bhupender Yadav handed over India's first PRAMAAN certificates under the Indian Forest and Wood Certification Scheme (IFWCS).
The recipients are the Andhra Pradesh Forest Development Corporation, for 33,000 hectares, and Shri Govind Mohapatra, a bamboo farmer linked to the Odisha Bamboo Development Agency.
PRAMAAN stands for Programme for Recognition and Accreditation of sustainable Management practices for Agroforestry And Natural forestry resources.
The scheme was launched in December 2023 and is operated by the Indian Institute of Forest Management, Bhopal.
Accreditation is by the National Accreditation Board for Certification Bodies under the Quality Council of India.
Certification rests on the National Working Plan Code 2023 and independent third-party audits.
Scheme launched:
December 2023
APFDC certified area:
33,000 hectares
Operating agency:
IIFM, Bhopal
Why it matters for exams: New environment certification schemes, their operating agencies and accreditation bodies are common in environment and governance questions.
Kerala PSCUPSC
30 September 2026
On 30 September 2026 WHO published the 120-page manual 'Prevention and management of heat-related illness at mass gatherings: considerations for implementation'. It treats extreme heat as a growing health, safety and operational risk for large public events. It sets out three health risk management phases: preparation, impact mitigation and recovery. A separate Risk Assessment Tool spreadsheet accompanies the manual. It applies where access to safe water, cooling, transport or medical care is limited.
Manual length:
120 pages
Risk management phases:
3
Why it matters for exams: Climate-linked health risks and WHO guidance are frequent in health and environment questions.
Kerala PSCUPSC
30 September 2026
The Union Cabinet chaired by Prime Minister Narendra Modi approved the Green Energy Corridor Phase-III scheme for development of the intra-state transmission system with Battery Energy Storage Systems on 30 September 2026.
Total project cost is ₹1,86,405 crore: ₹1,36,378 crore for intra-state transmission systems and ₹50,000 crore for battery energy storage systems.
Central financial support is ₹54,082 crore.
The scheme targets evacuation of 135 GW of renewable energy and deployment of 50 GWh of battery storage by FY 2032-33.
Greenfield projects use Tariff Based Competitive Bidding and brownfield work uses Cost Plus Basis.
State Transmission Utilities implement it, with Transmission Service Providers taking part under the Build-Own-Operate-Maintain model.
It supports the target of 900 GW installed non-fossil capacity by 2035.
Total project cost:
₹1,86,405 crore
Central financial support:
₹54,082 crore
Renewable evacuation target:
135 GW
Battery storage:
50 GWh
Why it matters for exams: Green Energy Corridor phases, outlays and the 900 GW non-fossil target for 2035 are staple economy and energy questions.
Kerala PSCUPSC
Background
Worldwide there are six Regional Specialised Meteorological Centres (RSMCs) mandated to issue advisories and name tropical cyclones.
The India Meteorological Department is one of the six RSMCs.
It provides cyclone and storm surge advisories to 13 member countries under the WMO/ESCAP Panel, including Bangladesh, India, Iran, Maldives, Myanmar, Oman, Pakistan, Qatar, Saudi Arabia, Sri Lanka, Thailand, the United Arab Emirates and Yemen.
RSMC New Delhi names tropical cyclones developing over the north Indian Ocean, including the Bay of Bengal and the Arabian Sea.
Naming helps identify each cyclone, removes confusion when cyclones occur at the same time and helps warnings reach a wider audience.
RSMCs worldwide:
Six
Member countries served under the WMO/ESCAP Panel:
13
Names cyclones over the north Indian Ocean:
RSMC New Delhi
Why it matters for exams: Who names cyclones in the Indian Ocean and why is a recurring geography and disaster-management question.
Kerala PSCUPSCSSC