1) west bengal muncipal building rules 2007
Control of development of parks, public open spaces, ponds, wetlands, canals, river and other water front
and brick fields:—
Rule 8 sub rule (3) No canal, pond, water body, wetland, rivulets, jhora, water source, natural spring, streams, drains, culverts shall be filled up:
Provided that after taking due consideration of the existing relevant Acts, the drainage, slope, slip, landslide, ecology,culture, environment, pisciculture, fire fighting or any other material consideration, and for reasons to be recorded in writing theBoard of Councillors with the prior approval of the State Government, may allow any canal, pond, rivulets, streams, rivers, Hood
plain area to be filled up.
2) i s your sale deed duly stamped and registered? inorder to confer clear title purchase of plot should have been by registered sale deed . in your case you have purchased property from seller whose name is not on records .
3) it is necessary to peruse court order of sulahanma entered into between parties . you should have obtained certified copy of order from court before purchase of property and it should have been enclosed to your sale deed
4) contact a local lawyer . you would get the records but may take some time as it is of 1960