H^<5 NEW YORK STATE MUSEUM 



the Cliainplain vallev and that it liad withdrawn as far north as 

 Street Road but probably had not withdrawn as far north as 

 Trembleau mountain at Port Kent. 



Covcville outlet [sec i)l.llj. One of the singularities of the 

 gorges lateral to that of the Hudson in the upper valley of the 

 river is the arrangement of the Hoosic opposite that of Kound 

 lake, and farther north the opposition of the channel of the 

 Batten kill to that of Fish creek the present outlet of Saratoga 

 lake. The only feature however of these side gorges to which 

 sufficient attention has been paid in this survey to warrant dis- 

 cussion is the old channel of the Hudson west of Schuylerville. 

 Between Northumberland and Bacon Hill a trough about 1 mile 

 wide at top and J itiile wide over the floor overhangs the present 

 gorge of the Hudson and extends southward to Grangerville 

 where Fish creek valley enters it from the west. From this 

 point the old trough extends southeastward to the west bank of 

 the Hudson below Schuylerville, there overhanging the floor of 

 the gorge at Coveville (the Dovegat of the Revolution), a re- 

 markable recess in the western wall of the gorge. At North- 

 umberland the restored contour of the floor of this old hung-up 

 channel would make its present elevation about 220 feet above 

 the sea; at Coveville the floor of this hanging valley is about 200 

 feet above tide. The cove at Coveville in its relation to this 

 hanging valley shows clearly that a large stream at one time 

 flowed southward over the wall of the gorge at this place into 

 the main gorge of the Hudson river, and was arrested after a 

 slight amount of cutting had been accomplished. 



Fish creek now enters this old valley at Grangerville, flows 

 along its eastern side for about 2 miles, turns sharply north- 

 eastward through a narrow and steep valley to the Hudson on 

 the southern limits of old Schuylerville, falling approximately 

 100 feet in a distance of 2 miles. 



The Hudson river must have at one time flowed through this 

 Coveville valley at a time when the bed of the river was in this 

 latitude apj)roximately 100 feet higlier than it now is. The 220 

 foot elevation of the old valley back of Northumberland coin- 

 cides closely with the terrace on the east side of the river above 

 Thompson and thence northward to the Moses kill. Further- 

 more the delta of the Batten kill northwest of Bald MountaiD 



