METHODS FOR FIXING THE CAPACITIES OF RESERVOIRS PART 1 GENERAL REQUIREMENTS Second Revision of IS 5477 Part 1
Document Title [Hindi] :
जलाशयों की क्षमता निश्चित करने की पद्धतियाँ भाग 1 सामान्य आवश्यकताएँ (IS 5477 Part 1 का दूसरा पुनरीक्षण)
Document Type :
Revision
Language :
English
Priority :
3
ICS Code :
93.160
Date of Project Approval :
14-05-2024
Standards to be Revised :
Sl.No.
Is No & Year
1
IS 5477 : Part 1: 1999
Standards to be Superseded :
Sl.No.
Is No & Year
1
IS 5477 : Part 1: 1999
Classification Details
Group :
Civil Engineering Design and Construction
Sub Group :
Hydraulic and other related structures
Sub Sub Group :
Reservoirs-Planning, Design, Construction, Operation and maintenance
Aspects :
Code of Practice
Risk :
Low
Certification :
Not Certifiable
Short Commom Man's Title :
ITCHS Code :
Ministry :
Ministry of Jal Shakti - Department of Water Resources, River Development and Ganga Rejuvenation
Sustainable development Goals :
Degree of Equivalence :
Indigenous
Identical/Equivalent Standards :
Organization Type:
Division Council Chairperson Approval Details
Sl.No.
Synosis Points
1
A dam built across a river creates a reservoir behind it to store a part of the run-off from the catchment upstream of the dam. Run-off is stored when it is in excess of the demand. Demand of water for various purposes like irrigation, power, water supply, etc, is met from the reservoir storage during the lean periods, when demand exceeds the run-off.
Reservoir storage generally consists of three parts as follows:
a) Inactive storage including dead storage;
b) Active or conservation storage; and
c) Flood and surcharge storage.
2
This standard IS 5477 (Part 1) was first published in 1969. The first revision was published in 1999 which incorporated inclusion of aspects related to engineering, geology, economic analysis, committed and future upstream uses, density currents, location of outlets, etc. Brune’s curve for calculation of trap efficiency was omitted from this standard and reference was given to IS 12182: 1987 ‘Guidelines for determination of effects of sedimentation in planning and performance of reservoirs’ which covers additional details for calculation of trap efficiency. This revision (second revision) has been brought out to bring the standard in the latest style and format of the Indian Standards. In addition, the following major changes have been incorporated:
a) Clause 4.1.2 has been modified to account for sedimentation aspects.
b) Clause 4.9 has been modified to account for GLOFs in the inflow design flood.