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Ukai Water Resources Project
Location Vill.: Ukai
Purpose Multi-purpose
River Tapi
Area of catchment 62225 km2
Mean annual rainfall 785 mm
Year of commencement of construction work 1964
Year of completion 1972.
Type Earthen & Masonry
Bed Rock Basalt   (Dolerite  Dyke )
Maximum height above the
lowest point of foundation
80.772 m
Length at the top of the dam 4927 m.
Total Volume Content:
Concrete 0.21 Mm3
Masonry 1.51 Mm3
Earthwork 23.67 Mm3
Area at full reservoir level 612 Km3
Gross storage capacity 7414.29 Mm3
Effective storage capacity 6729.896 Mm3
Area under submergence
a) Forest b) Waste land c) Culturable
a) 22258 ha b) 7485 ha c) 30350 ha
No. of villages under submergence 170
Type Ogee
Length 425.195 m
Energy dissipater Ski-jump bucket
Maximum discharge 46269  m3/s
Type, Nos. and  size of gate Radial, 22, 15.55 m X 14.783 m
Length of canal  -
73+48=121  Km. (Left)
Capacity  -
35.0 m3/Sec (Left)
Gross command area 1,21,410 Ha. (Left)
Culturable command area  
66,168 Ha. (Left)
Villages under command
a)District b)Taluka c) No. of villages
Surat Mandvi 7
bardoli 11
Mahuva 29
Tapi Songadh 20
Vyara 43
Valod 41
Navsari Chikhali 39
Vansda 9
Valsad Valsad 24
Navsari Dharampur 1
  Total 224
Name of Scheme District Rock type encountered at the dam site
Ukai / Tapi Surat Besalt (Dolerite Dyke)
Irrigated Area in Last Five Years
Year Irrigated Area in ha
2008-09 44,215
2009-10 29,735
2010-11 37,364
2011-12 37,926
2012-13 41,881

Power Plant
Type Under ground, River  bed power house
Hydraulic Head 57 m to 34 m
Maximum discharge 213 m3/s
Installed Capacity 300 MW

Estimated cost Rs 13896.15 lacs
Name of scheme River Village Taluka Dist. Catchment Area (Sq.Kms) Yield (MCM) Maximum observed flood (Cumecs)
Gujarat Other Maximum Average
Ukai Tapi Ukai Songadha Surat 917 KM 2 61308.00 - 17220.00 42470.00

Date Crest R.L. (M.) F.R.L. (M) H.F.L. (M) Top of Dam R.L.(M) Gross Capacity at F.R.L. (MCM) Dead storage (MCM) Live storage (MCM) Lenth of Spillway (M)
06/08/1968 91.135 105.156 106.99 111.25 7414.29 684.394 6729.896 425.195

Type of Spillway Details of Gates Lenth of Auxilary Spillway (M) Left Bank Canal Right Bank Canal Year of Completion
Types Nos. Lenth K.M. Discharge Capacity (Cumecs) Length K.M. Discharge Capacity (Cumecs)
 Ogee  Radial 22   73.00 35.00 - - 1972

G.C.A. (Ha) C.C.A. (Ha) Maximum Irrigation
Year Area
1,21,410 66,168 1999-2000 88,564

Name   of circle Name of scheme Type of scheme Irrigation (Ha.) Yearly reservation 
Irrigation In Kharif-2011 Irrigation In Rabi-2011-12 Irrigation In Hot-2012 Total For drinking use (MCFt) For Industrial use (MCFt.)
Ukai Circle(Civil) Ukai Ukai Major 5709 26779 23921 56409 10.64 10.05