U. S. SOIL CONSERVATION SERVICE 



Figure 39. Check dams hold back 

 water for absorption and infiltra- 

 tion and save the soil. 



Figure 40. A sturdy check dam is 

 necessary for a deep gully. 



Figure 38. Series of small check 

 dams in a shallow gully. 



U. S. SOIL CONSERVATION SERVICE 



U. S. SOIL CONSERVATION SERVICE 



Figure 41. Check dams along 

 highways help to conserve and 

 control water. 



U. S. BUREAU OF AGRICULTURAL ENGINEERING 



