Organisation  Structure

River Systems in Karnataka

Irrigation in Karnataka


Notifications & Govt. Orders

Tender Notifications & Post tender Evaluation



1.  Name of Reservoir   Harangi
2.  Location    Located at Hudgur village.
Latitude 12o  29' 30" N
Longitude  75o  54' 20" E


  District      Coorg     
 Sub-basin              C-1 Upper Cauvery
3.  Catchment area 
      (in sq.kms)

4.  Design yield at 50% dependability :   (in TMC)


5.  Storage (in TMC)             

     i)  Gross                                                            

    ii)  Dead          0.427
   iii)  Live          8.073
   iv) Carry over         -NIL-

6.  Reservoir Evaporation                 
     Losses (TMC)


7.  i)  Filling period  

From June to November
     ii) Depletion period   From December to May

8.  Submersion (in acres)

   i)  Forest area     2,739.00
   ii)  Cultivable area      283.00
   iii)  Fallow lands (Dry)   570.00
   iv)  Wet lands             1,123.00
                                                         TOTAL 4,715.00  

    v)    No.of villages /Hamlets                              

13 Nos.

9. Levels Of Storage

    i)Full Reservoir Level (FRL) 

RL 2,859.00 ft.
    ii) Minimum drawn down
          level (MDDL) 
RL 2,788.66 ft. 

    iii)  Dead Storage Level                           

RS 2,788.00 ft.

    iv) Sill level of canal sluice
         a) Left Bank Canal Sluice               

RL 2,778.00 ft.

         b) Right Bank Canal Sluice       

Takes off from 11.28 km of Left Bank at
RL 2839.67  

     v) Sill level of river sluice               

RL 2,730.00 ft.   

10.  Silt charge per year (Mcft/ of catchment area) 

     i)    Designed                                              0.009

      ii)   Actual                                   

Not assessed  

11.    Ayacut (in acres)        

   i)  Left Bank Canal             30.141
   ii) Right Bank Canal       73,254
  iii) Periyapatna Lift Canal       30,000
  iv) Somwarpet Lift Canal         1,500    
                                                  TOTAL     1,34,895     

12.  General characteristics of soil   in the Command Area         

Soil is predominantly gravel mixed with red soil on the upper reaches and black cotton soil on the lower reaches of the canal.    

13. Power Generation

       a) Installed power in MW      


       b) Annual Power Generation  in MU

II. (i) Particulars of Dam        
1. Type of Dam   Masonry Dam with Central spillway and non-overflow section and Earthen Dam on either flank. 
2. Length of Dam (in ft.)      2,775   
3. Height of Dam (in ft)  above River bed level    164   
4. Length of Spillway (in ft)   220 
5.  Capacity of spillway         1,20,163 Cusecs
6.  Outlets (Canals & River)
Sl. No Left Bank canal at Dam Combined Regulator at 11.28 km of left bank canal Periyapatna Lift canal takes off @ Ch. 3.80 km of RBC Somwarpet Lift Canal takes off @ Ch. 12.20 km of LBC



    Left Bank Canal Right Bank Canal      
a)      Number 6 1





b)      Type 6'x10' Rectangular 8'6"x11' Rectangular 8'6"x11' Rectangular



6'x12' Rectangular

c)      Capacity       in Cusecs

1956 456 1500

  400 (out of 1500)

  42 (Out of 456)

II. (ii) Description of Canals  
    (Main & Branch Canals)  
 1.(a)Length of Left Bank Canal ( in kms)   153
     b)Off take point of Somwarpet Lift canal 12.20      km of Left Bank canal   
      Length of Lift Canal (in kms)  10
      Length of raising main (in mtrs)  145        
      Lift involved (in mtrs)   43
     Number of pumps proposed      3+ 1( One Standby)      
     Horse power required   600HP                     
     Power required    1000 KVA & 50 KVA
 2.(a) Length of Right Bank Canal (in kms) 137.50         
    (b)Off take point of periyapatna  Lift canal    3.8 Km of Right Bank Canal  
     Length of Lift Canal (in kms)  50
     Length of raising main (in mtrs) 2 x 260  
     Lift involved (in mtrs)   47.0          
    Number of pumps proposed    4+2 (Two Standby)    
    Horse Power Required  8,400 HP         
    Power required 6.5 MW
 (c)Length of Branch canals under Right Bank canal (in kms) 103.5
3.  Whether perennial / one seasonal / Two Seasonal Two seasonal
4.   Whether lined or unlined   Lined canal up to 11.28 km (bifurcation point of Left Bank Canal and Right Bank Canal) unlined in remaining system.  
5.Authorised Head Capacity  
 Left Bank Canal (at head up to 11.28 Km)  1956 cusecs   
Left Bank Canal beyond 11.28 km   456 cusecs  
 Right Bank Canal (off take 11.28 km  of Left Bank Canal 1,500 cusecs 
  Somwarpet Lift Canal         42 cusecs
  Periyapatna Lift Canal 324 Cusecs