T56 MADRAS FISHERIES BULLETIN VOL. XII, No 4 (1920) 



KOTAGIRI DISTRICT. 



Report on St. Catherine Fall stream, dated 14th January 1907. 



Temperature, upper reaches, 59 Fahr. 



junction main tributary (5,650 feet), 6o e Fahr. 



Nature of the bottom. — Sand and gravel with clayey deposit. 



Amount of live fish food. — Very little. 



Remarks. — The main tributary of this stream has a rough stony 

 bottom and has every appearance of washing completely out 

 during rains. The banks of the main stream afford little protec- 

 tion for fish and are being gradually washed away. 



At about 5,100 feet elevation, there is a big fall which is impos- 

 sible for fish to ascend. The temperature below this fall is 63 

 degrees. The stream has a gravel bottom, but no shade or protec- 

 tive bank. Further down a stream from Kotagiri enters with a 

 fair amount of shade and gravel bottom, temperature 60 degrees, 

 I-30 p.m. 



I consider this stream unsuitable for trout, the banks being of 

 such a nature that fish would not stay as they have no protection 

 if disturbed, and the intervening fall would prevent them getting 

 to the upper reaches to spawn. 



Report on the Orange Valley stream, dated 1 5 th January 1 907. 



Temperature, upper reaches, above falls, 57 Fahr., bright sun. 



below falls, II a.m., 58* Fahr. 

 noon, 6o° 

 3 P-it»-. 6l° „ 



Nature of the bottom. — This stream in the upper reaches flows 

 over slab rock. Below the falls the bottom is covered with a clay- 

 coloured deposit and is very dirty. 



Fish food. — The amount of fish food is very small and in places 

 is practically all killed out by the above deposit. 



There is one good tributary entering the main stieam below 

 Badaga village with a good supply of fish food and temperature 

 58 Fahr., at noon, bright sun. 



This stream is not suitable for trout in its present condition, 

 as the pollution or silt deposit on the bottom destroys most of the 

 animalcules and valuable tish food. 



