SS Proceedings of Indiana Academy of Science 



TABLE 1. Elevations of low points about Cleai- Lake in relation to the 

 elevation of Clear Lake, and the fall per mile. 



Note: The last two show same relation between Pine Lake and Springs 

 north of divide. 



This table shows that the static head in feet per mile from Clear Lake 

 to the springs north of the divide is slightly greater than that to the 

 city wells which is the greatest to points south of the divide. The static 

 head from Pine Lake to the springs is much greater than from Clear 

 Lake. Since the material toward the north in the moraine is coarser 

 than that at the edge of the moraine on the .south, both slope and 

 porosity indicate that the loss of water from the lakes is mainly north- 

 ward. Clear Lake seems to be near the ground water divide and prob- 

 ably loses water in both directions. 



Hypothesis of the Actual Water Loss from Lakes in Ten Years. 

 The data concerning the actual decline in lake level for the past ten 

 years is somewhat contradictory. Figure 3 shows Lily Lake to have 

 been 793.19 feet elevation in 1898, and 792.79 feet in 1914 while the 

 elevation at the end of 1921 was 791.31. These data indicate less than 

 two feet fall since 1898. On the other hand the data collected by Mr. 

 W. A. Cummings at intervals of a year or less for seven or eight years 

 indicate that Clear Lake has declined five or five and a half feet in that 

 time. The testimony of reputable citizens seems to bear out Mr. Cum- 

 mings' data. These citizens point out definite points along the shores 

 of Pine and Stone Lakes where the water stood ten years ago and these 

 points are invariably about five feet above the present water level. It 

 may be that the bench mark from which the data on Lily Lake was 

 taken was not accurately located and was considered several feet lower 

 than it actually was. This seems probable for it is not reasonable to 

 think that Lily Lake was lower in that time than were the other lakes 

 which would be the case if we recognize Mr. Cummings' data and the 



