Which one of the following is an artificial lake ?

Provides a general definition: 'A lake is a natural depression filled with water,' and notes lakes have different origins.

A student could use this rule to ask whether Kodaikanal Lake occupies a natural basin (natural origin) or was created by human action (artificial).

States explicitly that India has many artificial (man-made) lakes and gives an historical example (Sudarshan Lake).

A student could use this pattern to treat Kodaikanal Lake as plausibly artificial and then look for local evidence (presence of a dam, reservoir function, or historical construction date).

Explains how man-made lakes are commonly created (erecting a dam across a river valley to form reservoirs) and gives examples.

A student could check whether Kodaikanal Lake has a dammed inlet/outlet or is described as a reservoir to infer artificial origin.

Gives a concrete South Indian example (Veeranam Lake) of a lake functioning as a water reservoir supplying a city, implying human-managed/artificial usage.

A student could compare Kodaikanal Lake to Veeranam: if Kodaikanal serves as a constructed reservoir for water supply, that supports it being artificial.

Shows that some well-known Indian lakes (Wular) have specific natural origins (tectonic), illustrating the contrast between natural origin types and man-made lakes.

A student could seek statements or geological/photographic evidence identifying Kodaikanal Lake's origin (tectonic/glacial vs. constructed) to decide which category fits.

Describes Kolleru as the largest freshwater lake in India and explicitly calls it a natural flood‑balancing reservoir for the Krishna and Godavari rivers (language implying natural origin).

A student could check historical records or maps for any dam/engineering works creating the lake — absence would support a natural origin.

Refers to Kolleru as an 'inland lagoon' associated with river delta palaeo‑channels, a geomorphological description typical of naturally formed coastal/riverine lakes.

Compare satellite imagery or coastal geomorphology maps to see whether Kolleru fits lagoon/deltaic formation patterns rather than impoundment by a dam.

NCERT lists Kolleru among examples of lakes formed by river action and coastal features (spits, bars forming lagoons), placing it in a category of naturally formed lakes.

Use basic coastal-process knowledge (location between deltas, presence of sandbars) to infer natural lagoon formation unless evidence of artificial construction exists.

States Kolleru lies between the deltas of Godavari and Krishna and groups it with other coastal lagoons — a geographic pattern suggesting natural origin via deltaic/coastal processes.

A student can inspect regional topography and river mouths on a map to see if the lake's position is consistent with lagoon formation rather than a reservoir created by damming.

Provides a clear example of an artificial lake (Dhebar/Jaisamand) built by constructing a dam — useful as a contrastive pattern for identifying artificial lakes.

Apply the pattern: if Kolleru had been artificial, sources would note dam construction or purpose (like Jaisamand); absence of such descriptions points away from an artificial classification.

States that most freshwater lakes in the Himalayan region are of glacial origin and explicitly lists Nainital among important freshwater lakes.

A student could use this rule (Himalayan freshwater lakes are typically glacial) plus Nainital's Himalayan location on a map to infer Nainital is likely a natural (glacial) lake and then seek direct confirmation.

Describes Naini (Nainital) Lake as the town's sole drinking-water source and the focus of conservation efforts, implying a natural freshwater supply rather than a purely ornamental/man-made reservoir.

Combine this with the typical role of natural lakes as municipal water sources to suspect Nainital is natural, then check historical/formation records.

Gives a clear example of an artificial lake (Pushkar) created by damming, providing a pattern for what textual evidence of artificial origin looks like.

A student can look for similar language (e.g., 'created', 'dam built across') in sources about Nainital to test whether it was man-made.

Notes that India has many artificial (man-made) lakes and gives an ancient example, showing that artificial lakes do exist in the region and must be distinguished from natural ones.

Use this general point plus knowledge of local geography to avoid assuming all regional lakes are natural and to prompt searching for specific origin information for Nainital.

Describes 'dissolution lakes' in Uttarakhand (and Bhimtal), illustrating another natural formation process distinct from artificial creation.

A student could compare Nainital's physical/geomorphological descriptions to known natural-formation types (glacial, tectonic, dissolution) to rule out an artificial origin.

NCERT states most freshwater lakes in the Himalayan region are of glacial origin (i.e., naturally formed).

Since Renuka Lake is in Himachal (a Himalayan state), a student could check regional glacier/geomorphology maps to see if Renuka fits the common glacial-origin pattern.

The Renuka snippet locates the lake in Sirmaur, Himachal and describes cultural/tourist features but does not mention construction (dam) or reservoir status.

A student could combine this absence with the location clue (Himalayan region) and look for historical records or dam infrastructure near Sirmaur to confirm natural vs. artificial origin.

Pushkar Lake is given as a clear example of an artificial lake created by building a dam across a river.

Use this formation pattern (dam across headwaters) as a checklist: search for any dam/river-engineering history at Renuka to test if it matches an artificial-lake example.

Dhebar (Jaisamand) is cited as an explicit large artificial lake built by constructing a dam across a river — another concrete example of artificial-lake creation.

Compare the known formation mechanism of Dhebar (dam across a river) with topographic and hydrological maps of Renuka to see if similar dam/reservoir features exist.

GC Leong defines man-made lakes as those formed by erecting concrete dams across river valleys (reservoirs), providing a clear rule for identifying artificial lakes.

Apply this definitional rule: check whether Renuka has a dam, reservoir infrastructure, or is in a dammed valley to determine if it fits the 'man-made' definition.