SoR of Water Resources Investigation and Development Department: WRIDD Subject: Schedule of Rates Source: Official Website Summary: Schedule of Rates of Water Resources Investigation and Development, Government of West Bengal. This SoR is effective from 18.01.2018 after the incorporation of GST Act, 2017 and all addenda and corrigenda of SoR. WRIDD-SOR-2018Download Approved-SOR-2021Download Solar-Water-Pumping-System-2021Download Rates-Materials-2021-2022Download Solar-Water-Pumping-System-2024Download Drilling-Tube-Well-2024Download