170 American Fisheries Socict 



ceiving pond, and from this pond five streams of water 

 will start and connect with and flow through all the other 

 ponds. The ponds are all connected, as stated before, by 

 cement runways 29 inches wide and with supply and drain 

 pipes. The walls of the cement structures conform to the 

 contour of the embankments, but are about a foot higher on 

 the sides of the earth embankments than the banks them- 

 selves. There are grooves in the walls of these cement 

 structures for receiving the stop-boards and the wire screens. 



There will be about a dozen small houses located at dif- 

 ferent places on the grounds, for storing tools, material and 

 the wire screens not in use. There will be three or four 

 houses for superintendents and regular employees. We 

 also intend to install a telephone system so that the main 

 office can communicate with a dozen or more stations on 

 different parts of the grounds. There will be about four 

 miles of roadways, wide enough for automobiles, and sev- 

 eral miles of roadway embankments not so wide, but wide 

 enough for smaller vehicles and for "foot passengers." All 

 the roadways are over the embankments and run for the 

 most part the long way of the hatchery grounds, east and 

 west, but the connecting roads run north and south. The 

 cement waterways connecting the ponds will be covered with 

 cement slabs, strong enough to support the vehicles that 

 pass over them. 



The ground that is to be converted into ponds is very 

 irregular, full of ups and downs. This is very fortunate for 

 pond construction, as nearly every pond in the system has its 

 centre near a low place. This accounts for the irregular 

 shape of the ponds. The amount of earth to be removed in 

 forming the pond basin is in most cases just what is needed. 

 for the embankments for that particular pond. There will 

 be very few long hauls. This will make very economical 

 construction compared with work on a level piece of ground 

 where the ponds would have to be excavated or dirt hauled 

 a longer distance to build the embankments. 





