Recently, linking of which of the following rivers was undertaken?

Describes the 'National Water Grid' concept and lists a Ganga-Kaveri Link Canal that would pass through basins including Godavari and Krishna, showing that inter-basin link proposals explicitly involve Godavari–Krishna corridors.

A student could check project timelines, government releases, or maps of the National Water Grid to see whether any constructed link between Godavari and Krishna was completed around 2016.

Explains the Ganga-Kaveri Link Canal concept and mentions that flood waters of Godavari could be used via a water grid, implying planning-level ideas to transfer Godavari waters into southern basins (which include Krishna).

Compare the conceptual canal route and lifting/distribution scheme with administrative project approvals and construction status circa 2016 to judge whether an actual Godavari–Krishna link existed then.

States that much of the annual flow in south Indian rivers like the Godavari and Krishna has been harnessed, indicating existing major river infrastructure that would affect feasibility and need for linking projects.

Use knowledge of existing reservoirs/dams (names, locations) and check whether new interlinking works were added around 2016 connecting those harnessed systems.

Lists inter-state water disputes for both Krishna and Godavari, showing strong political/technical sensitivities that typically accompany large inter-basin link projects.

Investigate whether any formal dispute settlements, agreements, or court orders around 2016 referenced new inter-basin link construction between these rivers.

Defines Godavari and Krishna as consequent east‑flowing peninsular rivers draining to the Bay of Bengal, implying geographic alignment that makes canal or link proposals between them conceptually plausible.

Overlay river-course maps and basin boundaries to see where physical proximity could allow a link and then check project records for work done circa 2016 in those locations.

Lists major components of a proposed National Water Grid and shows the Son (Sone) basin appears in Ganga-Kaveri link plans, indicating Son is considered in inter-basin linking schemes.

A student could check spatially whether Son and Mahanadi basins are part of the same national linking proposals and then look up project timelines/news to see if a Son–Mahanadi link was actually built around 2016.

Explicitly lists proposed inter-basin links under consideration, including a set of links and mentions Mahanadi-Godavari as being under consideration — showing Mahanadi was a candidate for linking projects, though not Sone specifically.

Use this pattern (Mahanadi being in proposed links) plus a map to see whether a Mahanadi–Sone connection was considered, then search policy documents/news for execution dates near 2016.

Describes how large river-link schemes (Ganga–Kaveri) would draw and distribute water, including lifting and transferring between basins — gives the technical/administrative model used for major links.

Apply this model to test plausibility: check if a Mahanadi–Sone link would require similar barrages/lifts and whether such infrastructure was completed around 2016 in official records or media.

Raises practical issues (terrain, lifting water, sufficient surplus) that are central to whether digging a canal is enough — useful for assessing feasibility and likely timing of any new inter-basin link.

Combine terrain and surplus-water considerations with a topographic map between Mahanadi and Sone to judge whether a link would be technically simple (and thus more likely to be completed recently) or difficult (less likely).

Gives the geographic course, basin area and states covered by the Mahanadi, enabling identification of where linking works would need to start or end.

Use these basin boundaries with a map showing the Sone basin to assess the geographic separation and therefore how ambitious a link would be and whether such a project plausibly could have been completed by 2016.

States a geographic fact: at the Khandwa–Burhanpur gap the Narmada and Tapi come close to each other, indicating physical proximity that makes a link technically plausible.

A student could check a map (or coordinates) of that gap to judge the shortness/feasibility of any inter-basin canal and whether a recent project would need major long-distance works.

Describes the National Water Grid concept and explicitly lists that the Ganga–Kaveri Link Canal passes through the basins of Son, Narmada, Tapi, etc., showing linking these basins has been a formal proposal.

Compare the long-standing proposal status in this source with timelines of actual construction (news/government records) to see if a new link specifically between Narmada and Tapi was executed around 2016.

Explains the Ganga–Kaveri Link Canal scheme would distribute water via existing rivers and canals, and mentions using flood waters of the Narmada and Godavari—an example of planned inter-basin transfers involving Narmada/Tapi.

Use the scheme's described routing to infer whether any segment linking Narmada–Tapi would be a new standalone project or part of a larger, previously proposed national plan.

Mentions a specific Sardar Sarovar proposal: a diversion canal from Narmada to Kutch and western Rajasthan—an example of concrete inter-basin/diversion works already envisaged for Narmada.

A student could look up implementation status and dates of Sardar Sarovar-related diversion works to assess whether linking activity in 2016 would be unprecedented or part of an earlier program.

Notes that Narmada and Tapi are both west‑flowing rivers and exceptions to the general east‑flowing peninsular pattern—context on drainage direction helpful when reasoning about linking across watersheds.

Combine with a watershed map to see required elevation changes/engineering (e.g., whether gravity flow is possible) and therefore how likely a recent, simple link would be.