GAYATHRI PROJECT: STAGE II - CHULLIAR



  1. Salient features

1. General

State

Kerala

District

Palakkad

Taluk/Village

Chittur

Latitude

100 36rsquo;N

Longitude

760 36rsquo;E

River

Chulliar

Year of Completion

1970

2. Structural Features of Dam

Type

Masonry dam of straight gravity type and earthen dam of zonal type

Top Width

Masonry- 3.60m. Earth- 6.50m

Bottom Width

Masonry- 21.60m. Earth -61.50m

Length

Masonry-555m.Earthen-1200m

Maximum Height

Masonry- 30.5m.Earthen- 18.29m

Volume Content of Dam Body

Concrete - 0.01154 Million m 3

Earth work - 0.17 Million m 3

Masonry - 0.08 Million m 3

Slope ndash; upstream amp; down stream

Earth- 21/2:1 on U/S, 2:1 on D/S

3. Hydrological Features of Dam

Catchment Area

27.80Km2

Probable Maximum Flood

223.70Cumecs

4. Spillway

Location

Left bank

Type

Ogee type

Total length

30m.

Crest level

151.03m

Design capacity of spillway

223.7 Cumecs

Number and type and sizes of gates

3 nos, vertical lift type, 7.65 x 3.05 m.

5. Reservoir Features

Top bank Level

+155.94m.

Maximum water level

+154.11m

Full reservoir level

+154.11m

Minimum drawdown level

+136.55m

Dead storage capacity

Nil

Gross storage capacity

13.70Mm3

Freeboard over F.R.L

1.83m

Reservoir Area at F.R.L

165.0Ha

Free board over M.W.L

1.83 m