Extended Flash Check: Forty-Five More Questions

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Name the three additional lake-formation types beyond the original five, and the mechanism behind each. — Karst (dissolving soluble rock), subsidence (ground sinking, often from mining/extraction), landslide-dammed (a landslide blocks a valley).
What is the standard world example of a karst lake system? — Croatia's Plitvice Lakes.
What binational/bilateral agreement restricts large-scale diversion of Great Lakes water outside its basin, and when was it signed? — The Great Lakes–St. Lawrence River Basin Water Resources Compact, 2008.
What long-term climate trend affecting all five Great Lakes is frequently cited alongside pollution and invasive species? — Declining winter ice cover.
Which Kazakh lake is part-fresh and part-saline within a single basin? — Lake Balkhash.
Which Kyrgyz lake's name translates to "warm lake," and why does it rarely freeze? — Lake Issyk-Kul; due to its great depth, mild salinity, and geothermal inputs.
Which African lake is the world's largest permanent desert lake, nicknamed the "Jade Sea"? — Lake Turkana, Kenya.
Which African lake is at genuine risk of a limnic (gas) eruption, and what two smaller lakes share this rare hazard category? — Lake Kivu (Rwanda/DR Congo); Lake Nyos and Lake Monoun (both Cameroon).
Which reservoir is the world's largest by surface area, and on what river/dam was it created? — Lake Volta, Ghana; created by the Akosombo Dam on the Volta River.
Which Bolivian lake effectively dried up in 2015, and name the three combined causes. — Lake Poopó; upstream water diversion for mining/agriculture, drought, and rising evaporation.
Why is Lake Maracaibo's classification as a true "lake" sometimes disputed? — It is geologically a tidal bay/estuary connected to the Gulf of Venezuela rather than a fully closed inland basin.
Name the freshwater lake on the same river system as the Dead Sea that is often confused with it, and state one key difference. — The Sea of Galilee (Lake Tiberias/Kinneret); it is freshwater and only about 210 m below sea level, versus the Dead Sea's saline water and roughly 430 m depth.
Which Turkish lake is a large soda (alkaline) lake used traditionally for detergent-free laundering? — Lake Van.
Which Iranian lake has shrunk by over 80–90% since the 1990s, and what is the primary cause? — Lake Urmia; upstream dam construction, agricultural withdrawal, and reduced precipitation.
Which three-country lake sits on the Rhine's course through the Alps? — Lake Constance (Bodensee) — Germany, Austria, Switzerland.
Which lake is the largest entirely within the European Union? — Lake Vänern, Sweden.
Which Canadian lake is currently facing a modern eutrophication crisis comparable to Lake Erie's historic one? — Lake Winnipeg, Manitoba.
Which lake is the world's largest volcanic-caldera lake, and what large island sits within it? — Lake Toba, Indonesia; Samosir Island.
Which Central American lake hosts a population of freshwater-adapted bull sharks? — Lake Nicaragua.
Which reservoir's creation forced the relocation of the Abu Simbel temples, and on which river/dam was it created? — Lake Nasser; created by the Aswan High Dam on the Nile.
Which river drains Lake Baikal, and into which larger river system does it feed? — The Angara River, feeding into the Yenisei system.
Which river links Lake Titicaca to Lake Poopó? — The Desaguadero River.
Name the seventh Indian lake-formation type (beyond the original six), and its standard Indian example. — Karst/spring-fed; Sasthamkotta Lake, Kerala.
Which Kashmir Valley lake is generally cited as its deepest? — Manasbal Lake.
Name the two pairs of glacial twin lakes that make up the "Kashmir Great Lakes" trekking circuit. — Gangabal–Nundkol and Vishansar–Krishansar.
Which Rajasthan lake is commonly cited as Asia's second-largest artificial lake, and who built it? — Jaisamand Lake (Dhebar Lake); built by Maharana Jai Singh of Mewar.
Which Rajasthan lake's embankment carries the Rajprashasti, a long dynastic marble inscription? — Rajsamand Lake.
Which Ajmer lake predates Udaipur's lake cluster by roughly two centuries, and who built it? — Ana Sagar Lake; built by Anaji Chauhan in the 12th century.
Which Odisha lake is generally cited as the state's largest freshwater lake (distinct from Chilika's brackish title)? — Ansupa Lake.
Which Kerala backwater venue specifically hosts the Nehru Trophy snake-boat race each August? — Punnamada Lake.
Which Tamil Nadu water body is an 11th-century Chola-era irrigation tank still supplementing Chennai's drinking water? — Veeranam Lake.
Name Lonar Lake's two rim temples. — Daitya Sudan and Kamalja Devi.
What was the Ithai Barrage originally built for, and what unintended ecological consequence followed? — Hydropower generation and irrigation; it stabilised Loktak's water level and let phumdi mats proliferate unchecked.
Which Himachal Pradesh lake is sacred to Hindus, Buddhists, and Sikhs simultaneously? — Rewalsar Lake.
Name the two Kumaon lakes (beyond Nainital and Bhimtal) named for the number of interconnected parts or sides they have. — Sattal ("seven lakes") and Naukuchiatal ("nine-cornered lake").
Which Tripura lake is famous for its island water-palace, and what is that palace called? — Rudrasagar Lake; Neermahal.
Which Meghalaya reservoir, near Shillong, is also known as Barapani? — Umiam Lake.
Which lake is commonly cited as Asia's largest freshwater oxbow lake, and in which state and river system does it sit? — Kanwar Lake (Kabar Tal); Bihar, on the Gandak/Burhi Gandak river system.
Which Hyderabad lake, built in the 16th century, is famous for a monolithic Buddha statue and Ganesh-immersion tradition? — Hussain Sagar.
Which Indian reservoir holds the record for largest water-spread area, and which holds the record for largest live storage capacity? — Govind Ballabh Pant Sagar/Rihand Reservoir (area); Indira Sagar (capacity).
Which Himachal Pradesh reservoir on the Beas river is also a Ramsar-designated wetland? — Maharana Pratap Sagar (Pong Dam Lake).
Name the river on which the Tehri Lake reservoir sits. — The Bhagirathi river.
What triggered the February 2021 Chamoli disaster, and what infrastructure did it destroy? — A massive rock-and-ice avalanche from a hanging glacier on Nanda Devi; it destroyed the Rishiganga hydropower project and badly damaged the Tapovan-Vishnugad project.
What triggered the October 2023 South Lhonak Lake GLOF, and which dam did it damage? — A landslide (possibly linked to a seismic tremor) falling into the rapidly growing moraine-dammed lake; it damaged the Teesta-III dam at Chungthang.
Why does Pangong Tso recur so often in current-affairs coverage unrelated to its physical geography? — Because its cross-border position along the Line of Actual Control has made it a recurring flashpoint in India–China border tensions, notably during the 2020 standoff.

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