Narmada Water Resources ,Water Supply and kalpsar department (Water Resources) home
Rangmati Water Resources Project
Location Vill. :Changa, Ta.:Jamnagar, Dist. : Jamnagar
Purpose Irrigation
River Rangmati
Area of catchment 70 km2
Mean annual runoff in the  catchment 81.3 Mm3
Mean annual rainfall 513 mm
Year of commencement of construction work 1982
Year of completion Under progress

Earthen & Masonry

Bed Rock Basalt
Maximum height above the
lowest point of foundation
15  m
Length at the top of the dam 2765 m
Total Volume Content:
Concrete 0.004 Mm3
Masonry 0.001 Mm3
Earthwork 0.195 Mm3
Area at full reservoir level 1.775 Km2
Gross storage capacity 3.778  Mm3
Effective storage capacity 3.474  Mm3
Area under submergence
a) Forest b) Waste land c) Culturable
a)  Nil b)   18  ha c) 40 ha
No. of villages under submergence Nil
Type Ogee
Length 56 m
Energy dissipater Roller bucket
Maximum discharge 1125  m3/s
Type, Nos. and  size of gate Radial,5 (9.15 m x 6.10 m)
Length of canal 6.18 km
Capacity 0.923 m3/s
Gross command area 1013  ha
Culturable command area 860  ha
Villages under command
a) District b) Taluka c) No. of villages
Jamnagar Jamnagar 1
  Total 1

Name of Scheme District Rock type encountered at the dam site
Rangmati Jamnagar Porphyritic basalt, Porphyritic amygdaloidal basalt & Agglomerate.
Estimated cost Rs. 226.24  lacs
Expenditure upto March, 1987 Rs.180.24 lacs

Irrigated Area in Last Five Years :
Year Irrigation Area in ha
2008-09 43
2009-10 112
2010-11 105
2011-12 155
2012-13 0