TABLES OF ELEVATION, etc. 
413 
Table of ascents and descents from Great Sodus Bay, on Lake Ontario, along Seneca lake 
and the route of the Chemung canal, to Newtown on the Chemung or West Branch of the 
Susquehannah river. 
ROUTE. 
Miles. 
Feet. 
Lake Ontario, at Great Sodus Bay,___ 
231 
Lyons, on the Erie canal,--- 
15 
Rises 170 
401 
Outlet of Seneca lake, near Geneva,- 
12 
27 
Rises 46 
447 
Alon o- the lake to its head,__ ___ 
34 
61 
T .evel, 
447 
890 
Summit between the lake and Chemung river,_ . 
8 
69 
Rises 443 
The Chemung at Newtown,-- 
l .. 
10 
79 
Falls 53 
837 
Table of ascents and descents from Lake Ontario, along the valley of the Genesee river, to 
the mouth of Black creek in Allegany county, and thence to Olean on the Allegany 
river, along Oil and Black creeks . 
ROUTE. 
Miles. 
Feet. 
Mouth of Genesee river,__ ___ 
231 
Erie canal at Rochester._ ___ . 
8 
Rises 
275 
506 
Squakie hill,________ _ 
29 
37 
Rises 
68 
574 
Gardeau flats,_ _ 
6 
43 
Rises 
76 
650 
Head of the great falls, Portage,_ _ 
8 
51 
Rises 
453 
1,103 
Mouth of Black creek,___ 
16 
67 
Rises 
162 
1,265 
^Summit level between Black and Oil creeks,_ 
10 
77 
Rises 
221 
1,486 
Olean on the Allegany,_ 
13 
90 
Falls 
78 
1,408 
-- 
Table of ascents and descents from the mouth of Oak-orchard creek on Lake Ontario, in 
nearly a direct line to Olean on the Allegany, hy the route of Batavia, the Tonawanda 
creek, Lime lake, and the valley of Ischua creek. 
ROUTE. 
Miles. 
Feet. 
Lake Ontario, at the mouth of Oak-orchard creek, _ 
231 
Albion, on the Erie canal,_ 
8 
Rises 9.75 
506 
Tonawanda creek, at Batavia,____ 
17 
25 
Rises 77 
883 
Attica, along Tonawanda creek,__ . 
11 
36 
Rises 571 
954 
Dividing ridge between Tonawanda and Cattaraugus creeks, 
18 
54 
Rises 426 
1,480 
Lime lake,_ 
14 
68 
Rises 143 
1,623 
Olean point, on the Allegany, along the valley of Ischua 
and Oil creeks,_ 
27 
93 
Falls 214 
1,409 
* This summit is a marsh, the discharged waters of which find the level of the ocean in the Gulf of St. Lawrence and the 
Gulf of Mexico. 
