Spatio-temporal evaluation of surface water quality of Tawi watershed in the Himalayan region of Jammu (J&K, UT) using algal pollution indices: a geospatial approach - Gagandeep Kour; Inderjeet Tyagi; Sunil Dhar; Sarita Kumari; Deepak Pathania; Richa Kothari (Environmental Monitoring and Assessment, 2023)