Major Functions Of The Department

Contents

    Major and Medium Irrigation Sector
    Flood Management Sector
    Drainage Sector
    Command Area Development and Water Management


Major and Medium Irrigation Sector

Statistics of Land Pattern of Bihar

Sl. No.

Category

Area in Hectare

1

Forest Land

6,76,400.00

2

Land Under Misc. Tree, Groves

2,11,709.00

3

 Current Fallow
 Other Fallow
 Cultivable Waste

2,56,783.00
6,87,570.00
79,319.00

4

Net Area under Cultivation

56,05,798.00

5

Barren Land and Permanent Pasture

5,03,381.00

6

Area under Non Agricultural use

13,95,340.00

Total

94,16,300.00


Post bifurcated Bihar supports a population of 8.29 crores, within a geographical area 94163 sq. km. making it one of the most densely populated states in India. The thrust on agriculture in general and irrigation in particular has been pronounced on account of tremendous increase in population density. Bihar's problems of poverty and lack of economic growth can be addressed only through a rapid growth of agricultural productivity. To attend this goal, extension of irrigation facilities on a large scale is required. Massive investments need to be made for creation of irrigation potential and utilization of created potential through construction of major and medium irrigation schemes. The ultimate irrigation potential, which can be created, is 98.38 lakh ha out of which 53.53 lakh ha can be created through major and medium irrigation schemes. Till March 2015, a potential of 29.25 lakh ha has been created through 15 major and 78 medium schemes and 10 major and 3 medium ongoing schemes.

 Completed Major Schemes.

 Completed Medium Schemes.

 Ongoing Major & Medium Schemes

 Potential Created through Completed Major & Medium Schemes

 Reservoirs of Bihar

 Irrigation Achievements

 Revenue Realization

 Participatory Irrigation Management

 Interlinking of Rivers

 Details of Irrigation Projects

Flood Management Sector

Bihar is the most flood affected state of the country, accounting around 17.2% of the flood prone area of the country. Out of 94.16 lakh ha of geographical area, 68.80 lakh ha (76% of North Bihar and 73% of South Bihar) is flood prone. Presently 28 out of 38 districts of Bihar are flood-prone.

Sl. No. Flood Prone District Geographical Area
(Sq. Km)
Maximum Inundation in any particular year (from 1995 to 2010)
(Sq. Km)
North Bihar
1 Araria 2830 1690
2 Begusarai 1918 820
3 Darbhanga 2279 2020
4 Purvi-Champaran 3968 2600
5 Gopalganj 2033 1970
6 Katihar 3057 1850
7 Khagaria 1486 1150
8 Kishanganj 1884 490
9 Madhepura 1788 1030
10 Mudhubani 3501 2460
11 Muzaffarpur 3172 2330
12 Purnia 3229 1260
13 Saharsa 1692 1680
14 Samastipur 2904 1620
14 Saran 2641 950
16 Sheohar 443 330
17 Sitamarhi 2200 2180
18 Siwan 2219 450
19 Supaul 2420 1930
20 Vaishali 2036 1220
21 Pashchim Champaran 5228 1930
  Total (A) 52928 31960

South Bihar

22 Bhagalpur 2570 1130
23 Bhojpur 2474 475
24 Buxar 1624 435
25 Lakhisaray 1299 340
26 Nalanda 2367 903
27 Patna 3202 878
28 Shekhpura 606 400
  Total (B) 14142 4561
  Total (A+B) 67070 36521

Flood management works so far implemented comprise of construction and maintenance of embankments, revetment in selected portions of river banks, land spurs and other necessary flood protection works.

All the rivers excluding the Burhi Gandak joining the Ganga on its left bank in Bihar flows through a considerable length in Nepal. A large part of their catchments fall in the glacial regions of great Himalayas. Thus the remedial measures of the flood problem of Bihar acquires international dimensions. As a long term measure construction of storage reservoirs and extensive water shed treatment in upper catchments of river is essential.

As a short term protective measure, construction of embankments along rivers have been taken up. By constructing about 3732 km of embankment, around 36.33 Lakh ha of area has been brought under reasonable protection.

Sl. No. RiverLength of River in Bihar
(Km)
Catchment Area
(LHa)
Flood Prone Area
(Lha)
Length of Embankment Constructed
(Km)
Area under Protection
(LHa)
1 Gandak 260 4.188 3.35 511.66 6.24
2 Burhi Gandak 320 9.601 8.21 779.26 6.73
3 Kosi 260 11.410 10.15 451.21 9.72
4 Bagmati 394 6.500 4.44 650.34 1.67
k Baduaa 130 2.215

1.05

64.95  
5 Kamla-Balan 120 4.488 3.7 190.00 5.62
6 Mahananda 376 6.150 5.15 225.33 1.01
7 Ghaghra 83 2.995 2.53 132.90 0.79
8 Punpun 235 9.026 6.13 37.62 0.20
9 Ganga 445 19.322 12.92 596.92 2.44
10 Sone 202 15.820 3.70 59.54 0.21
11 Kiul-Harohar   17.225 6.34 14.00 0.00
12 Chandan 118 4.093 1.13 18.23 0.06
  TOTAL     68.80 Lha 3731.96 km  

Year-wise statement of lengths of embankment constructed and are protected thereof:

Year Cumulative Length of Embankment in Km Cumulative area protected in LHaRemarks
upto 1992 3454.00 28.34 As per report of 2nd Bihar State Irrigation Commission
1992-2005 3540.00 29.16 3454 Km embankment lengh subsequently revised to 3540 Km by including Forward Embkt./Chharkies
2005-2010 3610.00 29.46
Champaran Embkt.(Gandak) 10.40  Km
Bagmati29.60 Km
Tirmuhani Kursela(Kosi)30.00 Km
Total70.00 Km
2010-2012 3677.09 3050
Bagmati53.37 Km
Bhutahi Balan1.72 Km
Kamala12 Km
Total67.09  Km
2012-2013 3732.00 36.33
Bagmati6.00 Km
Kamla4..00 Km
Adhwara(Jhim Jamura)4.70 Km
Chandan40.21 Km
Total54.91 Km
Target(2013-2017) 3732+1555.72(new) =5287.72 36.33+19.99(new) =56.32 km
Bagmati186.63 Km
Adhwara(Jhim Jamura)47.30 Km
Chandan52.79 Km
Mahananda1196.00 Km
Sikrahna73.00 Km
Total1555.72 Km

The existing embankments are under increasing pressure due to rise in the bed level of rivers due to heavy silts brought by the rivers from Nepal. Due to abnormal changes in river courses, anti erosion works for protection of embankment and some very essential flood fighting works become essential every year.

Flood Protection Work to be taken up before flood 2015

Daily Flood News (During Flood Season 2014)

 Basin Wise Flood Prone and Protected Areas.

For history of flood in Bihar, please visit: http://fmis.bih.nic.in/history.html

For river basins under FMIS focus area, please visit: http://fmis.bih.nic.in/Riverbasin.html

Drainage Sector

In Bihar, nearly 9.41 lakh ha (8.32 lakh ha in north Bihar and 1.09 lakh ha in south Bihar), i.e. 10% of the total geographical area of the State is water logged. The reasons of water-logging are: spilling of silted small rivers, encroachment of drainage channels, embankment induced water-logging and presence of saucer type depression. By the end of financial year 2010-11,  1.75 lakh ha area has been freed from water logging problem. 2.50 lakh ha of water logged area is not economically and geographically viable for draining. 5.16 lakh ha area is to be drained.

The basin wise water logged area vis-a-vis proposed area to be drained out and the probable estimated amount are as below:

Sl.No

Name of Basin & adjoining areas.

Total Water logged area in Lha.

Area freed from water logging in Lha.

1.

Ganga

1.98

-

2.

Kosi

1.82

1.10

3.

Burhi Gandak

2.08

0.25

4.

Gandak

1.19

0.14

5.

Ghaghra

1.25

0.01

6.

Kiul Harohar (Mokama Tal)

1.06

-

7.

Mahananda

0.03

-

Total

9.41

1.50

Command Area Development and Water Management Programme

As per the guidelines for CADWM Programme for XIIth  Plan, the CADWM Programme has to be implemented in a holistic manner pari-passu (simultaneously) with irrigation project under AIBP so that Irrigation Potential Created (IPC) with hydraulic connectivity gets utilized soon after its creation, improves water use efficiency, increases agricultural productivity and production and brings sustainability in the irrigated agriculture in a participatory environment.