Description
IGNOU ONR-2 Solved Assignment English Medium 2025-26
CERTIFICATE IN WATER HARVESTING AND MANAGEMENT (CWHM)
Academic Session: July 2025 and January 2026
LAST DATE FOR SUBMISSION OF ASSIGNMENT
July 2025 Session: 30th September 2025
January 2026 Session: 28th March 2026
Course Title: Basics of Hydrology
Course Code: ONR-002
Maximum marks: 100
Note: Answer all the questions. Answer each question in about 500 words. All questions carry equal marks.
1. Define hydrology? Explain hydrologic cycle and its various components with the help of a neat diagram.
2. A rainfall of 80 mm falls in 4 hours over a catchment of 100 ha. There was no discharge before the storm. The outlet discharge of 1.5 m3/s continued for 8 hours. Calculate the following (i) amount of runoff (ii) amount of water not contributing to runoff and (iii) and runoff coefficient.
3. What is water balancing? Explain water budget with neat schematic diagram and describe its different components.
4. Explain normal ratio method for estimation of missing rainfall data.
5. What is groundwater pollution? Describe the impact of groundwater pollution. Write main physical and chemical characteristics of water.
ONR2, ONR 2, ONR-2, ONR02, ONR 02, ONR-02, ONR002, ONR 002, ONR-002
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