POND CONSTRUCTION 



no loss of fish from their being 

 forced against the screen. 



The kettle, or catch basin, which 

 is attached to every outlet .box, 

 should be about 10 to 18 inches deep, 

 and should extend above the bot- 



tom of the pond. Experience has 

 shown that most of the fish can be 

 removed with a seine as the water 

 is being drained, but some recep- 

 tacle should be provided to capture 

 the last few fish. The catch basin 



MH 





SECTION THROUGH 

 CENTERLINE 



Figure 10. — Plan of catch ba.sin with sutigested lueasurements for the viiU-h ha.siii 



according to size of the pond. 



19 



