GEOGRAPHY OF DARRANG DISTRICT
The District Darrang is situated at the center
of the state, which comes under North Bank Plain Zone (NBPZ) of
Assam, occupies a geographical area of 1850.58 sq.
km between longitudes 20o09'N to 26o95'N
and latitudes 91o45'E to 92o22'E.The
district is surrounded in the north by Udalguri District, in the
east Sonitpur District and in the west by Kamrup District. The major
physiographic variation of the district is in general considered
to be plain except high land areas, flood prone areas, char lands
and swampy areas. The mighty Brahmaputra flows along the southern
periphery of the district. Thus, the district is also well connected
with the water ways. The river Brahmaputra is the main river
in the border of the south of the district flows from the east to
west direction. Other important tributaries of the Brahmaputra
are Barnadi, Nanoi, Mangaldai, Nowanodi, Saktola, Dhansiri,which are
the main River flowing through the district and the rivers are perennial
in nature.
WEATHER INFORMATION OF THE DISTRICT :
CLIMATE AND RAINFALL:
The climate of the district is congenial. In the
winter, the northern part of the district is colder than the rest
of the district The average temperature ranges from 10o to 30o C.
Average annual rainfall is about 1791 mm. The relative humidity
is about 37% in the month of February/ March and about 82% in other
months. The monsoon of the district commences from the end of March
and intensity gradually increases up to August and then declines
to the minimum during November and December. The rainfall of the
district is given below in table
COMPARATIVE CHART OF MONTH & YEAR WISE
TOTAL RAINFALL (mm) :-
|
Month |
Year |
|
2002 |
2003 |
2004 |
2005 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
| January |
31.8 |
0.0 |
17.2 |
34.6 |
0.0 |
0.0 |
25.2 |
0.0 |
0.0 |
4.0 |
19.6 |
| February |
0.0 |
60.4 |
2.2 |
13.4 |
30.6 |
125.4 |
17.6 |
2.2 |
0.0 |
8.0 |
0.0 |
| March |
80.6 |
40.4 |
44.0 |
141.1 |
2.2 |
13.8 |
106.9 |
59.4 |
148.4 |
126.2 |
18.4 |
| April |
144.8 |
223.4 |
267.8 |
333.0 |
146 |
562.6 |
220.3 |
170.2 |
315.4 |
82.5 |
458.6 |
| May |
253.0 |
311.2 |
283.0 |
129.6 |
102.4 |
223.6 |
204.8 |
293.9 |
287.2 |
236.4 |
181.7 |
| June |
259.8 |
205.0 |
174.0 |
234.4 |
225.8 |
323.0 |
397.2 |
154.9 |
560.9 |
264.0 |
610.2 |
| July |
265.2 |
189.2 |
527.0 |
223.8 |
107.4 |
445.8 |
422.2 |
361.8 |
480.4 |
327.2 |
109.2 |
| August |
172.4 |
217.4 |
128.4 |
599.2 |
201.6 |
219.6 |
130.0 |
236.6 |
217.9 |
367.9 |
133.2 |
| September |
59.6 |
229.4 |
103.9 |
84.4 |
76.6 |
456.8 |
159.8 |
29.5 |
205.3 |
233.1 |
184.8 |
| October |
3.2 |
212.0 |
151.2 |
122.8 |
93.0 |
138.4 |
23.4 |
150.0 |
113.4 |
70.0 |
112.7 |
| November |
13.8 |
0.0 |
11.2 |
0.0 |
29.0 |
19.4 |
0.0 |
4.0 |
0.0 |
1.4 |
0.0 |
| December |
0.0 |
0.0 |
0.0 |
0.0 |
11.4 |
0.0 |
0.0 |
0.0 |
1.0 |
0.0 |
0.0 |
| Total
: |
1284.2 |
1688.4 |
1709.9 |
1916.3 |
1026.0 |
2528.4 |
1707.4 |
1462.5 |
2329.9 |
1720.7 |
1828.3 |
Total Rainfall (mm) amount received during 2002
to 2012 (10 years) by Darrang District :
COMPARATIVE CHART OF MONTH & YEAR WISE
TOTAL RAINY DAYS :-
|
Month |
Year wise & Month wise Nos. of days |
|
2002 |
2003 |
2004 |
2005 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
| January |
1 |
0 |
5 |
3 |
0 |
0 |
3 |
0 |
0 |
1 |
4 |
| February |
0 |
5 |
1 |
1 |
5 |
6 |
2 |
1 |
0 |
1 |
0 |
| March |
6 |
7 |
4 |
9 |
1 |
3 |
10 |
5 |
6 |
8 |
2 |
| April |
12 |
19 |
17 |
24 |
13 |
15 |
13 |
11 |
20 |
9 |
21 |
| May |
11 |
16 |
16 |
19 |
11 |
8 |
10 |
11 |
20 |
15 |
9 |
| June |
17 |
11 |
16 |
9 |
16 |
15 |
14 |
10 |
20 |
12 |
20 |
| July |
17 |
12 |
20 |
17 |
12 |
18 |
16 |
17 |
13 |
17 |
10 |
| August |
12 |
11 |
6 |
19 |
6 |
9 |
8 |
16 |
11 |
13 |
13 |
| September |
12 |
13 |
10 |
6 |
5 |
14 |
9 |
2 |
11 |
12 |
14 |
| October |
1 |
5 |
8 |
10 |
6 |
5 |
4 |
2 |
4 |
1 |
7 |
| November |
2 |
0 |
1 |
0 |
3 |
2 |
0 |
1 |
0 |
1.0 |
0 |
| December |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
1 |
0 |
0 |
| Total
: |
91 |
99 |
104 |
117 |
80 |
95 |
89 |
76 |
106 |
90.0 |
100 |
TEMPERATURE :
The temperature in the region begins to increase
from the end of February and reaches the highest point during June
and July. January is the coldest month of the year. The air is highly
humid throughout the year and winds are light in the district. But
some of the cyclonic storm and depressions from the Bay of Bengal
occur in the monsoon and post monsoon periods accompanied by heavy
rain. Thunder storms occur during the period from March to May.
Fog occurs in the winter months.
GEOGRAPHICAL FEATURES/ LAND USE PATTERN :
The total geographical area of the district is
1,85,058 hectare. The gross cropped area in the district is 1,34,518 ha
and the net sown area is calculated as 73,619
ha. The area sown more than once is 59,351 ha.
The cropping intensity is 182.72%. Out of the total cultivable area,
2.88 % is still cultivable waste. Out of the total geographical areas
1.70% areas covered as current fallow land. Permanent pastures and
grazing land covered 3, 105 ha (1.68% of the total geographical area),
Land under misc. trees groves not included in net area sown covered
4,760 ha (3.53 % of gross cropped area).
Soil Status :
The status of soil ranges from old alluvial to new
alluvial. The soils are sandy to sandy loam in texture and clayey in low
lying areas. Soils are mostly acidic and are characterized by medium to
high organic carbon, low to medium phosphorus and potash content. The
northern border is covered by Alluvium, accompanied by another thin belt
of older alluvium; the rest of the District is covered by sandstone &
shale.
Agro ecological situation (AES) of the District
(Based on soil and topography)
|
Sl. No. |
Agro-ecological situation |
Blocks covered |
Characteristics |
|
01. |
AES-1 |
Sipajhar, Pub Mangaldai, Kalaigaon(Part),
Khairabari (Part), Bechimari |
Low land with lower elevation |
|
02. |
AES-2 |
Sipajhar, Pub Mangaldai, Dalgaon-Sialmari,
Kalaigaon(Part), Bechimari, Pachim Mangaldai, |
Upland with medium rainfall |
|
03. |
AES-3 |
Sipajhar, Pub Mangaldai, Dalgaon-Sialmari, |
Medium land with medium rainfall |
|
04. |
AES-4 |
Kalaigaon(part), Khairabari (Part) |
Deep water with lower elevation |
