A minimum of eight units, in Chamoli and Uttarkashi districts were selected through probability proportional to size sampling technique (PPS) to study the work profile of nettle units in Uttarakhand. Fifty per cent of nettle units were established in the years 2007-2008. It was observed that 72.50 per cent and 62.50 per cent of nettle fibres were used in Uttarakashi and Chamoli respectively. They used 100 per cent nettle fibre which is a harvest wild growth in this area.

Trophic State Index (TSI) of Nainital Lake has been determined using secchi disk transparency as well as using Landsat 7 ETM bands. Various interpolation techniques have been tested and the best one has been applied to prepare the water quality images of Nainital Lake.