no IT. L. FATRriTTLD OLACTAL WATERS TN FINGER LAKES REGION 



valley of Salmon ci'csek, which enters Cayuga lake at Lu(llo\v\ille. The 

 elevation of this col is given by the Moravia sheet as 9G0 -j feet. The 

 elevation of Freeville, at the col of the main valley, is 1,040 feet. 



Before the glacier foot had receded as far as lA)cl<e a small lake must 

 have been held in each branch of the valley. The one in the main val- 

 ley may be called the Groton lake.* 'I'his had its outlet into Fall creek, 

 at Freeville. The elevation of the water surface was about 1 ,045 to 1,050 

 feet. The phenomena have not l)een studied in the Ciroton branch, but 

 delta terraces may be found about Groton and Peruville. 



The smaller lake held in the narrow western branch, at an elevation 

 originall}' of perhaps toward 1.000 feet, was the })redecessor of the Mora- 

 via lake, which occupied the greater valley until tlie ice-dam was removed 

 from the high ground between this and Caj'uga valle}', at a localit}' about 

 six miles south of Auburn. 



Good deltas and water-levels are found at Locke and Moravia, l)ut 

 especially at the latter village. At Locke the best plateau is south of 

 the village, being the point at the junction of the two valleys. It is 

 triangular, al)0ut one-third of a mile across, and nearly level ; at least 

 the point is water-laid drift. The elevation, taking the rail at the Lehigh 

 Valley station as 795, is 860 at the front and about 870 at the back. 

 This seems to represent the Warren level. Other plateaus of similar 

 level are seen up the valley southeast. 



Along the sides of the valley are seen traces of eroded terraces, both 

 of the Warren level and of another much higher. ' 



At Moravia deltas are well developed and two water-levels are con- 

 spicuous. The largest delta is close to the village on the east side, where 

 a gravel excavation has given a vertical exposure of about 100 feet. The 

 broad summit plateau of this delta, both sides of the ravine, has an alti- 

 tude of about 1,000 feet at the front and rises landward only 15 to 20 

 feet in half a mile. This is the proper level of the Moravia lake, making 

 some allowance for the down-cutting of the outlet, the depth of water 

 over the sill, and the land deformation through eight miles of distance. 



The lower terraces at Moravia represent clearly the Warren level. 

 There are two benches 27 feet apart. The extended upper ])ench corre- 

 sponds precisel}^ on both sides of the ravine, having an elevation of 882 it 

 feet. The lower bench, with an elevation of 855 ± feet, appears onl}' on 

 the south side of the ravine. This is the plateau beneath the house of 

 Mr 8poffbrd. 



These two Warren terraces show })lainly, looking from the village, on 



* In the earlier paper this name was applied to the glacial waters in the whole Owaseo valley. It 

 is now regarded ns the proper designation of onlj' the earlier, more localized lake, while the later 

 and main lake slionld be called the Moravia lake. 



