Question

Study the extract of the Survey of India Map Sheet No. G43S7 Map 8 and answer the following questions [Eastings 36-46, Northings 85-95]:

1. Give the four-figure grid reference of a settlement with
   1. Spot height •233.
   2. Post Office.
   3. Spot height 301.
   4. Δ364
2. Give the six-figure grid reference of
   1. An overhead tank at Karja Mota.
   2. A temple north of Rampura.
   3. the spot height that marks the highest point in the extract.
   4. the surveyed tree south of Ikhapura.
3. State the compass direction of
   1. Arniwada from Juvol
   2. Antroli from Kotda
   3. Chekhla from Rampura
   4. Sangla from Bantawada
4. What do the Spot heights •301 (grid square 4193) and •269 (grid square 3985) represent?
5. In the given map extract, in which course of its journey is the Banas river? Give a reason to support your answer.
6. Name two man-made features in grid square
   1. 4185
   2. 4592
7. State two features of the Western Railway as shown in the map extract.
8. Give a reason for each of the following:
   1. There are few settlements on the banks of the main river in the given map extract.
   2. A number of streams after flowing for short distances, disappear.
9. State the features that make Chitrasani an important settlement in the region.
10. What is the direction of flow of Balaram Nadi? What does the black dots in the river bed indicate?
11. What do the contour lines between grid square 3985 and 4186 represent?
12. What do the following mean?
    1. Open scrub in grid square 4192.
    2. The tree marked 192 in grid square 3988.
    3. 8r in grid square 4192.
    4. Δ364 in grid square 4086.
13. How are the gentle and steep slopes shown on the map?
14. State two main sources of water at the settlement of Antroli.
15. Despite the presence of metalled roads and electricity, why are there no big settlements in the region?
16. Calculate the area in sq. kms within the Eastings 40 to 44 and Northings 85 to 89.
17. What do you understand by open scrub? What does the white colour on the extract signify?
18. What do the reddish closely placed dots covering the most of the extract signify? Comment on the land usage where the lines are present.
19. Sanjay needs to go from the covered tank at Sangla to that at Antroli. What types of road would he take? How much distance would he travel?
20. What is the total area of the actual ground represented in the map extract? Show the calculation you have made.

Answer 1

1. 1. 4193
   2. 4486
   3. 4288
   4. 4086
2. 1. 454927
   2. 402923
   3. 424943
   4. 379877
3. 1. South-east
   2. North-west
   3. North-west
   4. South-west
4. •301 represents the peak of the conical hill whereas •269 represents the low range peak of Col and saddle.
5. Banas river is in the middle course as the river flows sluggisly forming meanders. The volume of water increases and the speed decreases.
6. Two man-made features in
   1. 4185 - Temple, chatri, Metalled road.
   2. 4592 - Temple, cart track.
7. 1. This railway line has cutting with tunnel.
   2. It has pars.
8. 1. It is due to presence of broken ground which indicates that this region get seasonal rainfall and it gets flooded during rainy season.
   2. Due to the presence of sandy soil.
9. It has national highway connectivity, post office, temple, perennial lined wells, covered tank, western railways lines, unsurvey power line.
10. It is towards North west, it indicates the sediments or load.
11. 1. 3985 - col and saddle
    2. 4186 - Ridge, conical hill, steep slope
12. 1. Open scrub: It is a region of scanty rainfall where thorny bushes are grown. Cattle rearing is the main occupation.
    2. surveyed tree
    3. relative height of the river bank is 8 m.
    4. It indicates the triangulation height is 364 m.
13. When contours are spaced far from one another at equal distance, it indicates gentle slope. When contours are placed very close to one another, it indicates steep slope.
14. Perennial lined wells, covered tanks.
15. Due to the presence of depresssions, broken ground and dry streams.
16. No. of Easting = 4
    No. of Northing = 4
    Area = 4 × 4 = 16 sq. km.
17. Open scrub is a region of scanty rainfall where thorny bushes are grown. White colour indicates that is an uncultivated or barren land.
18. It indicates the sand dunes. The region has sandy soil.
19. 3 km 450m
20. 100 sq km.
    No. of Easting = (85 – 95) = 10
    No. of Northing = (36 – 46) = 10
    Area = 10 × 10 sq km = 100 sq. km