Question

what does a perennial well signify about the place in a survey map extract ??
​

Answer 1

Answer:

Blue color is used in the topographical map to show water bodies like perennial river, canal, well, tank and spring.

Topographic Map Colors

The color brown is used to denote most contour lines on a map, which are relief features and elevations. Topographic maps use green to denote vegetation such as woods, while blue is used to denote water features like lakes, swamps, rivers, and drainage.

Answer 2

Answer:

Perennial well signify that the place has a higher water table and are shown by blue dots.