38 



NEW YORK STATE MUSEUM 



The highest of the Gowanda levels is seen in a water-leveled plateau 

 some distance southeast of the village, with altitude about 1210, 

 or 100 feet lower than the Persia outlet (to Allegany flow for the 

 second stage waters). Immediately south of the village is a high 

 plateau terrace at 1032 feet, called the Studley level. The Broadway 

 level is a strong terrace south of the village at 972 feet. Below the 

 Broadway level is another terrace, named the John Brown level, at 

 883 feet, which corresponds precisely with the summit level of the 

 broad Asylum plateau, northwest of the village and west of Collins. 

 The high tower and water tank of the State Insane Asylum stands 

 on the 883 feet level. Shoos corners, on the north side of the plateau, 

 are on a broad terrace at 873 feet; while a lower plain at 857 to 852 

 feet forms the State farm and the site of Collins village. With the 

 help of Mr B. W. Law these water planes were measured for altitude 

 in 1900 without any knowledge of their correlation beyond the idea 

 that the determining outlets were on the high ground to the west. 

 During the summer of 1902 the slope between Perrysburg and Forest - 

 ville was examined and the stream channels mapped entirely inde- 

 pendently of any other features. Indeed the correlation of the 

 channels with the Gowanda terraces was not made until the time 

 of this writing. The relationship can now be expressed in the 

 following table: 



GOWANDA PLANES 



Highest plateau, 12 10 feet 



Studley plateau, 1032 feet 

 Broadway level, 972 feet 



Asylum plateau, 883, 873 feet 



Collins plain, 855 feet 



Fourmile level, 820 feet and 

 declining west 



OUTLETS 



Highest well developed channels 

 across high ground west of Perrys- 

 burg 



Minor scourways at various 

 levels above and below 1 100 feet 



Strong channels at Smiths Mills 

 station, and east, at 1020 feet 



Strong cut terraces and bluffs 

 north of West Perrysburg and 

 around to Forestville, at 980 down 

 to 920 ± feet 



Strong channels at Smiths Mills 

 and east and west, at 900, 880 feet 

 and lower 



Lowest channels west of Smiths 

 Mills and west of Forestville, at 

 about 860 feet and declining 



Lake Whittlesey, 840 ± feet 



