Assam

This policy document provides  a brief background and guidelines on the implementation of the Public Private Partnership (PPP)  in infrastructure development proposed by the Government of Assam.

The historical ‘Samajik Parivarthan Yatra’ (Rally for Social Transformation), has been started to consolidate the gains of the movement for total eradication by liberated safai karmacharis who for the first time are bonding with one another began the  journey for social change  together, to inspire others who are still engaged in manual scavenging to free themselves from the obnoxious practise and regain their sense of dignity, and also to achieve their rightful claims for the rehabilitation package and dignified alternative livelihoods on the one hand; and on the other, to motivate civil society to reject the heinous practice of manual scavenging. The Bus Yatra has been planned to start from five different corners of India, and traverse through 160 districts in 20 states and finally culminate in New Delhi with a large rally. Each route has been named after an eminent person who contributed to social change in a revolutionary manner.

This link on the Central Public Health and Environmental Engineering Organisation (CPHEEO) website, presents data related to the status of the urban water, sanitation and solid waste management in India. The data includes information on:

• Status of water supply (physical)
• Status of urban water supply (financial)
• Status of urban sewerage/sanitation system
• Status of low cost sanitation
• Status of solid waste management

Data is included from different states in India namely Assam, Arunachal Pradesh, Karnataka, Gujarat, Maharashtra, Mizoram, Pondicherry, Sikkim and Tamilnadu respectively.

In this study, HEC 2 programme has been implemented on river Digaru to compute flow regime or the water surface profile for various discharge conditions. In this reach, two bridges have been considered to compute water surface elevations, critical water surface elevations, energy grade elevations & slope, velocity in the channel, flow area, top width and Froude Number.

The report presents flood plain mapping of Phulbari area within the flood plains of Brahmaputra basin in the States of Assam and Meghalaya using satellite data. Flood is a natural calamity in which most parts of the north-eastern region are ravaged. Management of the problem in these disastrous flood affected areas often requires flood plain mapping for protection and resource development. This has mostly being done in real time on the basis of time consuming and often hazardous ground based surveys.

The report presents the hydrologic soil classification of Dudhnai sub-basin based on regional information collected from various agencies supplemented by field and laboratory experiments on the soil samples collected from time to time. As required by various soil classification systems, soil properties together with other information have been studied and grouped into different classes as a reference base for future hydrological studies of the basin.

In the study, raingauge network design has been developed for the Pagladiya basin of Brahmaputra river in Nalbari, Assam and Bhutan. Precipitation is the most basic data required for any water resources study and the estimation of the number & location of raingauge stations that provide adequate information regarding rainfall falling over the catchment is referred to as network design. A raingauge network is intended to serve general as well as specific purposes such as water supply, hydropower generation, flood forecasting, irrigation and flood control.

In this report an attempt has been made to estimate the mean monthly reference crop evapotranspiration (ETo) for the Krishnai Irrigation Project in Assam. To undertake this analysis, the mean monthly climatological and physiographical data for the period of 1986 to 1994 has been collected from the Meteorological Department, Borjhar, Assam.

In this study, an attempt has been made to develop a regional flood formula using L-moments for the north Brahmaputra river system. The annual maximum peak flood data of twelve gauging sites of the north bank tributaries of the river have been considered. The screening of the data has been carried out for assessing the suitability of the data for regional flood frequency analysis by computing the Discordancy Measure (Di) in terms of L-moments. Also, homogeneity of the region has been tested using the L-moment based heterogeneity measure, H.

The study deals with the detection of trace elements – Cu, Co, Cd, Zn, Fe, Mn, Ni and Pb along with pH and ORP in the groundwater of Guwahati and its adjacent areas. Toxicity of a metal depends on its concentration, which adversely affects any biological activity. Almost all the metals are toxic at higher concentrations, few in low concentrations and few others even in trace like As, Pb, Hg, Cd etc. The presence of such metals in groundwater is a subject of concern. Groundwater that contains higher amount of metals affects public health to a great extent when it is used for drinking and domestic purposes.