The Kolleru Lake Information Centre (KLIC) was inaugurated/established in the Civil Engineering Department of S.R.K.R. Engineering College on 20th December, 2012. For the past one and a half century, an extensive amount of scientific data and knowledge on Kolleru Lake has been generated and gathered by the dedicated effort of scientists and institutions of national and international eminence. Since the lake is in the close proximity of the Engineering College, investigations on the lake ecosystem are initiated, a large scale spatial database is generated and the change phenomena/degradation of the lake ecosystem are meticulously documented. All the information generated over years is brought together in the form of this Information Centre, presenting the various types of data sets such as geospatial maps, statistical data in the form of tables and reports and photo collections.
The generated datasets serve as a tool to raise awareness amongst decision/policy makers about the economic benefits of conserving or restoring and sustainably managing the lake as opposed to its degradation and reclamation as land. The prime mission of KLIC is to further increase awareness on the uniqueness and conservation of Kolleru Lake among the scientific and political elite and society as well as the various stakeholders. It is of utmost importance to identify the magnitude of economic value of this lake ecosystem, in addition to its biodiversity, scientific value, climate regulation, potential tourism, social/cultural and other important wetland values. The vision is to enhance national as well as international attention for the conservation of this precious piece of nature in India.
Kolleru Lake is one of the largest freshwater lakes in India located in the state of Andhra Pradesh 20 kilometres away from the city of Eluru. It spans into two districts - Krishna and West Godavari. Kolleru Lake is located in the inter-deltaic plain of rivers Krishna and Godavari and serves as a natural flood-Kolleru Lake is one of the largest freshwater lakes in India located in the state of Andhra Pradesh 20 kilometres away from the city of Eluru. It spans into two districts - Krishna and West Godavari. Kolleru Lake is located in the inter-deltaic plain of rivers Krishna and Godavari and serves as a natural flood-balancing reservoir for these two rivers. The lake is fed directly by water from several seasonal rivers/streams and several inflowing drains and channels of irrigation systems of river Krishna and Godavari. This lake is a major tourist attraction, since many birds migrate here in winter, such as Spot billed Pelican, Siberian Crane, Ibis, and Painted Storks.
The lake is an important habitat for an estimated 20 million resident and migratory birds, including the grey or spot billed pelican (Pelecanus philippensis). The lake was declared as a wildlife sanctuary in November 1999 under India's Wildlife Protection Act of 1972, and designated as a wetland of international importance in November 2002 under the International Ramsar Convention. The wildlife sanctuary covers an area of 308 km2. However, thousands of fish tanks were dug up and effectively converted the lake/water body into a mere flood plain/drain. This had great impact in terms of pollution leading to difficulty in getting drinking water for the local people. This is in addition to the loss of ecological diversity and intrusion of sea water into the inland portions and its resulting adverse influence on the rainfall pattern in this region. This imbalance, created by the illegal appearance of aquaculture in and around the lake, has affected the natural functioning of the hydrological system of the lake and resulted in flooding of the foreshore areas of the lake and affecting thousands of acres of crop lands.
The existing land use practices/ change detection in and around the Kolleru lake has been carried out by employing geospatial as well as conventional data sets and consulting the satellite images of IRS LISS-III FCC digital and geo-coded photographic products on 1:50,000 scale pertaining to rabi season dated, 27-12-2006, 19-03-2005, 28-02-2005 and 01-01-2007 and digital data of Kharif season of IRS-P6 LISS IV MX data, The details of various land use classes are listed in the table below.
It is inferred, that approximately 70% of the lake was occupied by aquaculture, while agriculture has encroached around 10%. The area under aquaculture amounts to nearly 212.799 km2 within the lake etendt below 5’ contour. The agricultural encroachments were mostly of paddy cultivation. Further, the aquaculture between 5’-10’ contour accounts for nearly 147 km2. The undisturbed lake is infested with weeds like elephant grass and water hyacinth
AREA ESTIMATES OF LAND USE/LAND COVER IN KOLLERU REGION:
|S.no||Land Use / land Cover class||Within 5’ Contour (sq. km)||Between 5’ and ~ 10’ Contour (sq. km)|
|2||Lake with demolished aquaculture||212.799||0.0|
RECOMMENDATIONS FOR RESTORATION OF KOLLERU LAKE:1.Construction of regulators on Upputeru at various places (Kottada, Mollaparru and Padatadika).
LOCATION OF PROPOSED REGULATORS AND OUTFALL SLUICES:
|Name of the Centre||Name Of The Head/Coordinator||Name of the Co-Coordinator||Name of the Member(s)|
|Kolleru Lake Information Centre (KLIC)||Dr. PARK Raju||Dr. P.Raghuram||
Dr. V.R. Sarath Babu