Query about Block and Sub Districts

[Shivangi Desai]

Hey All,

Somewhat naive query but I am finding it very confusing to figure out the difference in SubDistrict and Blocks of a State.

In lgdirectory website they have list of village associated with a state and also a list of villages that are covered by blocks. The second one is a subset of the first. So there are villages which do not have any blocks associated with them.

Isn't that weird?

For example:- This is a snippet of list of these villages in Tamil Nadu:-

DistrictCode	DistrictName	SubDistrictCode	SubDistrictName	VillageCode	VillageName
33	610	Ariyalur	5983.0	Andimadam	931845	Varadarajanpettai
43	610	Ariyalur	5787.0	Ariyalur	931841	Ariyalur (South)
152	610	Ariyalur	5786.0	Udayarpalayam	931850	Jayankondamcholapuram
203	610	Ariyalur	5786.0	Udayarpalayam	931852	Udayarpalayam (East)
205	610	Ariyalur	5786.0	Udayarpalayam	931853	Udayarpalayam (West)

Am i missing something?

Any help will be much appreciated.

Thanks & Regards,

Shivangi

[chris mathen]

Blocks and subdistricts are different administrative entities but spatially they can overlap each other. In some states, blocks and subdistrict are same ( if I remember correctly, Andhra Pradesh) 

Regards, 

Christopher Kuruvilla Mathen

Research Scholar

IIT Kharagpur

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[sreeram kandimalla]

Villages not covered by any Blocks or ULBs are flagged as possible data problems and are listed in the exception reports on the LGD website. 

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[Shivangi Desai]

Hey Chris & Sreeram

Thanks for the information.

Sreeram, will check this link and see if that's the problem (I have not looked at ULB's, so probably good idea to do that mapping too).

The site seems down today. So once it's up I will try it out.

Thanks,

Shivangi

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