Draft Environmental Impact Assessment Report - Meghalaya State ...

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Description of the EnvironmentClimateThe project corridor lies in subtropicalZone. The climate in the Jaintia hills has itsown peculiarities and different from theother part of region. The average altituderange of the region varies from 1350m to1425m. The average Wet and cold winters,with relatively dry and moderately hotsummer are the main features of theregion.The central upland experiences very coldnight during the winter where thetemperature goes down to 1.7 0 c. Thetemperature never rises above 26 0 c in anypart of the year. The areas in the south ofJaintia Hills district fall under highestrainfall zone (more than 500 cm).The climate of the area is subtropicalmonsoon. The average rainfall is 3500mand mean maximum and minimum, temperatures are 24 0 C and 15 0 Crespectively. Three-fourth of the total rain falls between May and October.(Fig. 3.9)The average minimum annual rainfall is 251cm, maximum annual is 367 cm atJowai, and this station does not experience any rain shadow effect. With morethan 70 percent of the rainfall taking place in the monsoon season spread overJune to September.RainfallFig. 3.9: Climatic Condition Map ofJaintiahills districtThe average monthly rainfall is given in Fig. 3.10, and does not experience anyrain shadow effect. With more than 70 percent of the rainfall taking place in themonsoon season spread over June to September.TemperatureFig. 3.10: Mean monthly rainfall of project areaDraft Environmental Impact Assessment3 - 6
Rehabilitation and Up gradation of existing 2 lane to 2 lane with paved shoulder from Jowai (km 69.2) toMeghalaya/ Assam Border (km 173.20) Section of NH-44 in the State of Meghalaya under NHDP Phase-IIIProgramme (Package No. NN/DL2/4)The monthly minimum and maximum temperature of the project area is given inTable 3.2 and the lower temperature were observed during the winter monthsand higher temperature were observed during the months of summer.Table 3.2: Monthly minimum and maximum temperature of project areaMonthsMaximumTemperature ( o C)MinimumHumidityJanuary 14.7 5.7February 17.1 7.0March 21.3 11.0April 23.3 13.7May 23.4 15.3June 23.3 17.1July 23.5 17.6August 23.9 17.4September 23.1 16.3October 21.5 13.9November 18.8 10.3December 16.0 6.5The humidity of the study area is moderate to high that varies between 50% to87% during the months of March and July respectively. The monthly humidity ofthe project area is given in Table 3.3Table 3.3: Monthly average humidity (%) of project areaMonths Humidity (%) Months Humidity (%)January 61 July 87February 55 August 85March 50 September 82April 62 October 71May 74 November 64June 86 December 57Land Use PatternThe land use map of the district is shown in Fig. 3.11 and pattern within 500mradius of the road is shown in Fig 3.12 and map in Annexure 3.3. Forest cover isdominant Landuse of the area followed by agriculture, barren land The majorcrops in the area are maize, rice, potato, French beans etc. Sensitivity mappingDraft Environmental Impact Assessment3 - 7
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GLOSSARYEnvironmentBiosphereEco-sys
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Draft Environmental Impact Assessment Report - Meghalaya State ...

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