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NOUN Past Questions - ESM 423 HYDROLOGY AND WATER RESOURCES

NATIONAL OPEN UNIVERSITY OF NIGERIA

Plot 91, Cadastral Zone, Nnamdi Azikwe Expressway, Jabi, Abuja

Faculty of Sciences

COURSE CODE ESM423 
Unit: 3

COURSE TITLE: HYDROLOGY AND WATER RESOURCES 
NOUN Past Questions - ESM 423 HYDROLOGY AND WATER RESOURCES
TIME: 2:30MINS

Instruction: Answer 5 questions only

1.a. What is soil moisture? (5 Marks).

Mention and write short notes on the three forces influencing soil moisture. (5 Marks).
List three ways of measuring soil moisture (4 Marks).
2a. Mention two major environmental problems related to groundwater withdrawal (7 Marks).

Explain three sources of each environmental problem mentioned in 2a (7 Marks).
3a. Name three agents of erosion (4 Marks).

Discuss five methods of controlling erosion (10 Marks).
4. With the aid of a simplified diagram, explain the concept of the hydrological cycle (14 Marks).
5a Define the term ‘hydrology’ (4 Marks).

Explain the scope and relevance of hydrology (10 Marks).
6a. Describe a drainage basin. (5 Marks).

Explain five features of a drainage basin (5 Marks).
Name three major basin patterns. (4 Marks).
7a. Define the concept of interception. (5 Marks).

Of what importance is interception? (4 Marks).
Write short notes on three factors that affect interception. (5 Marks).
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