Executive Summary Report of Ceia Study for Bansujara Irrigation Project
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EXECUTIVE SUMMARY REPORT OF CEIA STUDY FOR BANSUJARA IRRIGATION PROJECT 1. GENERAL The Water Resources Department, state government of Madhya Pradesh proposes to develop Bansujara Irrigation project. The Bansujara Dam Project site is located at latitude 24 0-37'-32.87" N and longitude 79 0-08'-22.91” E on Dhasan river near village Ban in Bada malhera tehsil of Chhatarpur district and village Sujara in Tikamgarh tehsil of Tikamgarh district of Madhya Pradesh. The GCA and CCA of the project are 58468 ha and 49373 ha respectively. The project shall irrigate an area of 17,000 ha in Rabi and 37,000 ha in kharif seasons. The project location map is enclosed as Figure-1. 2. PROJECT DESCRIPTION The project comprises of the following main components: - • Construction of a 1158.2 m long homogenous earth dam with concrete gated spillway of height 21.33 m. • Water spread at FRL shall be 5201.71 ha with a gross storage capacity of 313.10 Mm 3. • Construction of left bank canal of 90 km in length with 22.35 km of distributaries. The index map of the project showing the dam and canal distribution system is enclosed as Figure-2. The tentative total land required for various project components is of about 5886.97 ha. The details are given in Table-1. About 2935.11 ha of revenue/government land and 2894.37 ha of private land is to be acquired. In addition, about 57.49 ha of forest land too is to be acquired. Table-1: Details of land to be acquired for the project Component Forest (ha) Govt. /Revenue land Private Area (ha) (ha) (ha) Submergence area 57.49 2870.01 2274.21 5201.71 Dam seat 8.10 8.1 Earthen saddle dam 1.00 1 Canal network 44.00 44 Other works 12.00 620.16 632.16 Total 57.49 2935.11 2894.37 5886.97 1 3. STUDY AREA The study area covered as a part of the EIA study is as below (Refer Figure-3). • Submergence area • Area to be acquired for various project appurtenances • Area within 10 km of various project appurtenances including i.e. canal network, etc. • Gross Command Area • Catchment Area intercepted at the dam site 4. ENVIRONMENTAL BASELINE STATUS The baseline status for the above referred categories has been described in the following sections. 4.1 PHYSCIO-CHEMICAL ASPECTS 4.1.1 Meteorology The project area of the proposed Bansujara Irrigation project experiences semi-arid climate characterized by hot summer, pleasant cold winter and general dryness throughout the years, except during monsoon season. The year may be divided into four seasons. The summer season lasts from March to about middle of June, followed by the south-west monsoon season from mid-June to the end of September. The months of October and November constitute the post-monsoon or transition period. The winter season is observed from December to February. 4.1.2 Soils The pH in various soil samples ranged from 6.4 to 7.2. The Electrical Conductivity (EC) ranged from 125 to 380 µS/cm. The concentration of available nitrogen, available potassium and available phosphorus ranged from 199 to 324 kg/ha, 181 to 528 kg/ha and 8.64 to 47.67 kg/ha respectively. The organic carbon ranged from 0.5 to 0.99%, indicating medium to high productivity. 4.1.3 Surface Water Quality The pH level in various seasons ranged from 7.6 to 7.9 indicating neutral nature of water. The TDS level ranged from 189 to 212 mg/l, 172 to 188 mg/l and 187 to 198 mg/l in pre-monsoon, monsoon and winter seasons respectively. The TDS levels were well below the permissible limit of 500 mg/l specified for meeting drinking water requirements. The EC levels were well below the permissible limit of 2250 µS/cm specified for irrigation water requirements as per IS:2296. 2 The concentration of chlorides in various seasons ranged from 21.5 to 31.4 mg/l. The chlorides level in surface water samples was well below the permissible limit of 200 mg/l. The sulphates level in various seasons ranged from 5.4 to 8.2 mg/l. The sulphates level were well below the permissible limit of 200 mg/l. The BOD values are well within the permissible limits, which indicates the absence of organic pollution loading. The concentration of various heavy metals was observed to be below detectable limit in various seasons. 4.1.4 Ground Water Quality The pH level ranges from 7.5 to 7.9, 7.2 to 7.8 and 7.4 to 7.8 in pre-monsoon, monsoon and winter seasons covered as a part of the study. The chlorides level ranged from 75 to 90 mg/l in pre-monsoon season, 65 to 76 mg/l in monsoon season and 74 to 84 mg/l in winter season. The chlorides level in groundwater samples was well below the permissible limit of 200 mg/l. The TDS levels were within the permissible limit of 500 mg/l in various seasons. The BOD values are well within the permissible limits, which indicates the absence of pollution sources. The concentration of various heavy metals were below the detectable limits. 4.1.5 Ambient Air Quality As a part of the field studies, various ambient air quality locations were monitored. Based on the findings of the ambient air quality survey, conducted for various seasons, it can be concluded that the ambient air quality is quite good in the area. 4.1.6 Noise Environment The day time equivalent noise level at various sampling stations were observed to be well within permissible limits specified for residential area. 4.1.7 Land use pattern The land use pattern of the submergence and command areas is outlined in Tables 2 and 3 respectively. Table-2: Land use of the Submergence area S.No Category Area(ha) Area(%) 1 Dense Vegetation 156 3.00 2 Open Vegetation/Scrub 1113 21.40 3 Barren land 1141 21.94 4 Agricultural Land 2445 47.00 5 Rive r/ Water body 340 6.53 6 Builtup area/Settlements 6 0.12 Total 5201 100.00 3 Table-3: Land use of the command area S.No Category Area(ha) Area(%) 1 Dense Vegetation 3785 6.47 2 Open Vegetation/Scrub 15893 27.18 3 Barren land 16833 28.79 4 Agricultural Land 21337 36.49 5 River/ Water body 615 1.05 6 Builtup area/Settlements 6 0.01 Total 58467 100.00 The major landuse category in the submergence area of Bansujara project is agriculture land, as it accounts for about 47% of the submergence area. The barren land accounts for 21.94% of the submergence area. The area under vegetation is about 3% of the submergence area. Settlements account for about 0.12% of the submergence area. The area under water bodies in only 6.53% of the submergence area. The major landuse category in the gross command area of Bansujara project is agriculture land, as it accounts for about 36.49% of the gross command area, followed by barren land (36.49%). The area under vegetation is 6.47% of the gross command area. Settlements and water bodies account for 0.01% and 1.05% of the gross command area. 4.2 ECOLOGICAL ASPECTS 4.2.1 Vegetation As per Champion and Seth (1968) Classification were: Tropical thorn forests : (6B/C2) is the dominant forest category Open low forests in which thorny usually hardwooded species predominate are the main characteristics of the tropical thorn forests. The main tree species reported in these forests are Acacia catechu, Acacia nilotica, Butea monosperma , Ficus bengalensis, Azadirachta indica , etc. The dominant shrub species are Abutilon indicum, Carica carranda, Calotropis procera, Vitex negundo, Zizyphus nummularia,etc. The herbaceous floral species includes Acalypha indica, Xanthium strumarium, Argemone mexima, etc. Floristics During the floristic survey in the Pre-Monsoon Season, Monsoon Season and Winter Season, maximum number of plant species recorded from the project area were from the Monsoon Season. The details are given in Table-4. 4 Table-4: Different life forms of the plant species recorded in various seasons Life form Number of Species Pre -Monsoon Monsoon Winter Trees 41 41 41 Shrubs 22 22 22 Herbs 21 90 47 Climbers 7 9 9 Bamboos 2 2 2 Parasite 1 2 1 Total 94 166 122 4.2.2 Fauna The project command is virtually devoid of any forests, with high degree of human interferences. No major wildlife is observed in the area. The commonly observed faunal species in the area are Field Rat, Common House Rat, Indian Wild Boar, Indian Barking Deer, Spotted Deer etc. Amongst the birds commonly observed species are Little Egret, White Stork, Koel, Black Partridge, House Crow, House Sparrow, Jungle Crow, Jungle Myna, Owl, etc. 4.2.3 Fisheries Fish fauna in the proposed Bansujara major irrigation project area comprised of 10 species belonging to 8 families . Conservation statuses for 9 species were assessed, 7 were found to be in least concerned (LC) category . Wallago attu belonged to Near Threatened (NT) category, while Anabas testudineus belonged to Data Deficient (DD) category. 4.3 SOCIO-ECONOMIC ASPECTS 4.3.1 Demographic profile The total population of the command area as about 1.33 lakhs. The male and female population is 70,848 and 62,586 respectively The number of females per 1000 males is 883. The percentage of SC and ST Population is 22.5% and 4.68% respectively. The overall literacy rate in the command area tehsils is 39.3%.