Mid Semester Examination -ET 1001 (2019) by Professor Ranjana Piyadasa - Wednesday, 21 August 2019, 3:49 PM Number of replies: 0 Mid-semester examination for Introduction to Hydrology (ET 1001) will be held on 28th Wednesday August 2019 from 1.00 pm – 2.00 pm at Lecture Hall 1. Permalink