Ukai Reservoir.pptx

Ukai Reservoir

1. COLLEGE OF FISHERIES NAVSARI AGRICULTURAL UNIVERSITY NAVSARI 396 450 ASSIGNMENT OF AQUACULTURE IN RESERVOIRS SUBMITTED BY : - Rajesh.V.Chudasama Reg . No : 3111017003 Second Sem B.F.Sc SUBMITTED TO : - Dr. Ritesh.V.Borichangar Nodal Officer & Asso. Prof, COF

2. Ukai also known as Vallbhsagar , is the largest reservoir in Gujarat situated on the river Tapti . Tapti river originates from Betul Madhayapradesh and meets in Arebian Sea. Its length is 724 km & 65,145 catchment area. Tapti river on two reservoir. 1. Ukai dam is located on tapti river at 90 km , distance having 62,225 sq km catchment area . 2. kakarapar weir is situated having 62,801 sq. km catchment area, at distance of 120 km. Ukai Reservoir

3. Location Of Ukai dam

4. latitude location is 21.32604 degree N. longitude location is 73.88114 degree E.

5. Ukai dam constructed in 1972 and construction cost is 1389.6 Million. The site is located 94 km from Surat. Height - 80.772 metres ( 270 ft ). Length – 4,927 metres ( 16,000 ft ). Catchment area – 62,225 Kilometre square. Water spread of about 52.000 ha . Introduction of Ukai dam

6. Water quality of Ukai dam ( surface values ) The water is rich in nutrients and dissolved salts. Parameters Range in variation 1. Water Temperature (°C) 20.0 – 32.6 2. Transparency (cm) 8.5 – 328.0 3. pH 8.0 – 8.4 4. Dissolved oxygen (mg/l) 3.7 – 14.0 5. Carbon dioxide (mg/l) Nil – 20.1 6. Carbonate (mg/l) 0.2 – 30.0 7. Bicarbonate (mg/l) 98.0 – 366.0 8. conductivity 41.0 – 585.0 9. Ca (mg/l) 12.0 – 58.0 10. Mg (mg/l) 6.7 – 33.8 11. N (mg/l) 0.02 – 0.09 12. P (mg/l) 0.012 – 1.00 13. Silicates (mg/l) 0.02 – 28.0

7. Plankton Diversity in Ukai dam The organically rich bottom is favourable for the rapid growth of benthic organisms. Yera Volumetric Abundance of plankton ( ml/m cube ) 1. 1976 – 77 5.26 to 6.60 2. 1977 – 78 12.5 to 22.5 3. 1978 – 79 2.0 to 35.5 4. 1979 – 80 1.0 to 6.3 5. 1980 – 81 0.95 to 11.0 6. 1981 – 82 0.3 to 6.7 7. 1982 - 83 0,23 to 12.6

8. Fish Culture And Capture In Ukai Dam

9. Fish Fauna of Ukai Dam 1. Tenualosa ilisha 2. Tor tor

10. 3. Aorichthys seenghala 4. Labeo fimbriatus

11. 5. Wallago attu CULTURE FISH : - Stocking of the reservoir was initiated in 1972, when it was still in formative stage. After the initial stocking, fishing was not allowed for three years to facilitate building-up of a stock of carps. During the period between 1972 and 1977, more then 5 million fry/fingerling (30-150 mm) of catla (40.9%), rohu (29.0%) and mrigal (30.1%) were stocked into the reservoir, along with 1600 of their brooders.

12. In the subsequent years, the stocking rate was erratic, varying between 65000 to 3 million. The species composition of 4:3:3 for catla, rohu and mrigal was more or less followed over the years. 1. Catla 2.Rohu 3.Mrigal

13. Fish catch sold through cooperative societies    1975–76 1976–77 1977–78 1978–79 1979–80 Total catch (t) 240.0 204.3 149 204 138 Catla catla(%) 16.55 20.55 33.70 38.80 22.05 L. rohita(%) 51.85 36.00 30.60 27.20 24.05 C. mrigala(%) 13.25 14.85 14.67 13.50 17.20 Tor tor(%) 6.55 7.90 6.01 5.05 19.06 Misc.(%) 11.80 20.70 15.02 15.45 17.64

14. Ukai dam………Video

15. Reference Book : Reservoir Fisheries of India - V.V Sugunan

16. … Thank You …