Kolleru, the largest freshwater lake along the east coast of India in Andhra Pradesh (AP) had been encroached, mainly for aquaculture, to such an extent that most of the lake area was highly compartmentalized by 3

The physico-chemical characteristics of groundwater samples from selected bore wells in Greater Visakhapatnam Municipal Corporation (GVMC) area have been studied. A total of 50 samples were collected in the month of May during the year 2005.

A recent scientific correspondence in these columns noted with concern that one of the tidal inlets of the Pulicat Lake has been considerably narrowed, which could be detrimental to the lake. But a more recent satellite image of the area, which is presented here, does not indicate any reason for raising such an alarm.

The hydrochemical characteristics of groundwater in Mehadrigedda watershed of Visakhapatnam district have been studied.

Water Quality Index (WQI) is one of the most effective way to assess the quality of water. The present study is to assess the groundwater quality in relation to domestic use in village-Srungavarpu Kota (S.Kota) of Vizinagaram district of Andhra Pradesh.

Analysis of multi-date satellite sensor data and maps indicated loss of 1836 ha of land during 1976–2001 along the Godavari deltaic coast resulting in displacement of coastal communities and mangrove destruction. Decrease in sediment loads from an annual average of 145.26 million tons in 1971–79 to 56.76 million tons during 1990–98, apparently due to construction of dams, largely diminished vertical accretion at the delta, while continued coastal subsidence that might have been accentuated by possible neotectonic activity and consequent relative sea level rise led to shoreline retreat.

Digital processing of the IRS-1D LISS-III image revealed a highly degraded state of the Kolleru lake.