Velliyankallu RCB, Thrithala

Velliyankallu

Thrithala RCB is envisaged for irrigating 3997 Ha. land in Ottappalam taluk, irrigating 1887 Ha. area through lift irrigation and supplying drinking water to around 7 lakhs people in 22 grama panchayaths of Guruvayoor, Chavakkad and Kunnamkulam municipalities.

 

Date of Commencement : May 1998
Date of Commissioning : 02/09/2007
Bed Level : +10.000 m
Top Level of Weir : +10.500 m
Top level of shutter : +15.000 m
FRL : +14.500 m
No. of Spans : 27 x 9.00 m.
Total Length of Bridge : 295.00 m
Size of Shutters : 9 x 4.50, 24Nos.
  : 9 x 5.00, 3 Nos.
Storage capacity : 13.30 Mm3
Water spread area : 382.00 Ha
Annual requirement of water for Irrigation : 31Mm3
Annual requirement of water for Drinking : 18 Mm3
Total requirement : 49 Mm3
Gross Ayacut of the Project : 3997 Ha.
Road width : 2 lane traffic with one meter width foot path on one side
Area of land acquired : 8.6022 Ha
Location:-Latitude : 10.81738(N 10049’2.57412’’)
Longitude : 76.11659( E 7606’59.73264’’)

 

Description of Apron

    Upstream

    Downstream

        Total

Solid Apron

    8.00 m

        18.00 m

      26.00 m

Block Apron(1.5 x 1.5 x 0.90 m)

    5 rows

        11 rows

      16 rows

Loose Apron

    16 m

        16 m

        32 m