Water arese otcurring on the trenasct were racordesd for compariasci. with 
L948. The results ars shown bslow: 
Tabls 4. --Water Arses Por Squares Mile 
Route No, Water Areas Psr Squars Mils 
1948 1949 
1 25i1 14-9 
z Lees 10.4 
3 a3 Oa? 
A Al 10,8 
3 127.4 Q.2 
& 11.3 3.38 
7 Fa Pod 
a Ra 5.6 
z 3.2 ‘6.4 
Averags 10.6 8.3 
The avsraga number of water arsas on the ning permanent transscts droppad 
from 10,6 per squares mils in 1948 to &.3 per squars mile in 1949--s8 dscrsasa 
of approximately 21 parcent, Ags mentioned befors, ths largast dacrosas was 
recorded in the Cotaau arse of Nerth Daketa--a dscrsass of 665 percent, A 
considerable tolerancs for variation of number of water areaa per square mila 
was 9xhibited by tha waterfowl population this year. Ther s 13 4 sugesation 
in tha above data, however, that at the present waterfowl population leyal 
when the oumber of water arsas drop below 4 per square mils a depression in 
numbers of waterfowl is likely to soceur, 
An interssting item rscordsd on this survey was that 10.2 parcent of ths 
water arsas observad were man-made. This includss the area in the Nebraska 
send hills whars the numbsr of man-mads water argas is high, 
Transect Number 10 
A special transect was flow in South Dakota this yosr 4s a coopsrativs 
measure with the States Game and Fish Department. This transect extended from 
Hedfield weat to Faith, south to Quinn and sast to Chamberlain, Ths tranagct, 
which ig located ln what was considsarsd oxtremaly poor watsrfowl troesding 
territory, ig 405 miles long and involysd a coverages of 101.2 squares milsa, 
The data racordad are presented in Table 4, 
280 
