Contents
1 INTRODUCTION 1
1.1 Urbanization 1
1.1.1 Density of Population 1
1.1.2 Literacy Rate: 2
1.1.3 Increasing Urbanization in Gujarat: 2
1.2 Rainfall 2
1.2.1 Managing Rainfall 4
1.3 Ground Water Depletion 5
1.3.1 Remedial Measures 5
1.4 Urban Flooding 6
1.4.1 Factors leading to Urban Flooding 7
1.5 Need Of The Study 7
1.6 Objectives Of The Study 8
1.7 Scope Of Study 8
1.8 Methodology 8
2 LITERATURE STUDY 10
2.1 Literature study-India 11
2.1.1 Scarcity of water in India 11
2.1.2 Ground water level data 12
2.1.3 Water Level Fluctuation 15
2.2 Literature study•Gujarat 17
2.2.1 Depth to Water Level. 17
2.2.2 Water Level Fluctuation 18
2.3 Institutions That Have A Framework For Urban Flooing 19
2.4 National Disaster Management Authority institutional framework: 19
2.4.1 Layout approvals- 19
2.4.2 Required specifications and conditions- 20
2.4.3 Implementation of the above guidelines- 21
3 SURVEY 22
3.1 INTRODUCTION 22
3.2 SURVEY NEED 22
3.3 SURVEY METHOD 22
3.4 SURVEY RESULTS 23
4 CASE STUDY_01 25
4.1 INTRODUCTION 25
4.2 LOCATION 25
4.3 CONNECTIVITY 26
4.4 PLAN 26
4.5 WATERSUPPLY 26
4.5.1 Borewell and underground tank location 27
4.5.2 Underground water tanks 27
5 CASE STUDY_02 31
5.1 INTRODUCTION 31
5.2 SITE LOCATION 31
5.3 SITE PHOTOGRAPHS 32
5.4 AREA DISTRIBUTION 33
5.5 RUN-OFF COEFFICIENT 33
5.6 AVERAGE RAINFALL OF AHMEDABAD (10 years) 34
5.7 CALCULATION 34
6 RUN-OFF CALCULATION 36
6.1.1 Inferences 41
7 CONCLUSION 42
7.1 Drinking water use 42
7.2 Recharge at Society level 43
7.3 Recharge at city level 44