FRANKLIN COUNTY. - : 597 
between the deep furrow worn by Big Walnut, and the scarcely less con- 
spicuous one of Rocky Fork; and the interval between the last named 
valley and Black Lick, is of the same extent. Another extension of 
table land, of three miles in breadth, carries us to the east line of the . 
county. This east and west section shows, in other words, seven con- 
spicuous notches or depressions, every valley, in fact, of any note, in the 
northern half of the county, being shown in it. 
A similar section, taken in the southern half of the county, on the 
north line of Hamilton and Madison townships, would agree very well 
in its main features with the first section. It would show the valleys of 
Big Darby, of Darby Big Run, Scioto Big Run, of the Scioto River, of 
Alum Creek, Walnut Creek, and Black Lick. 
The highest land of the county is found on its northern and western 
borders. The several water-sheds between the valleys named above, in 
Plain, Blendon, Sharon, and Perry townships, hold land about 925 feet 
above tide-water. The summits, on the western side of the county, rise, 
perhaps, a few feet higher; but it is not known that any land in the 
county exceeds 950 feet in elevation. The lowest land is, of course, 
found in the Scioto Valley, on the southern line of the county. 
The elevations of a number of points in the county, are here appended, 
being compiled from various railroad and other surveys that have been 
carried through the county: 
Columbus—Union Depot, above tide-water ...--........----..----- ------ 740 
oo Water-table of Ohio Agricultural and Mechanical-College .... 763 
We ILO WEE CH SOOO, BOOM soS556 S650 Gshe5q0 606556 Cabs boKeeE 700 
Grove ponbeaaemenelsciele cos seleieciciisjnee santos oie cla aiewicae sielsisieiers cetacvaeie nats 835 
VIMO 65500 066000 obec Gao HObOUG BOSON HOOHGHGS BEBO SOOOR0 Gano HaHe 769 
(HECHEA MMOs 656 666550 6000800 060060 550005 5650 665000 5006 6005 ad6505 0550 6d i thle 
Worthington eral EIR as 8g EIN ASO SRCORRN MAE Na nae ape 910. 
Westerville Station (C. C.C. & L DEH R) a) Ya a Ua og A 926 
Wiestenville—depotrnavaillacerwrs saci ssincicie scenes alae e's a aia cnieis) etic ieraiaiale 905 
Countypline noni uC AC accrlaheluaasacsiaciscsiss/senlceestoas smeleeisnists ascent 930 
Tn these elevations, the level of Lake Erie is assumed to be 570 feet 
above the sea, in accordance with the most recent determinations; but 
it is to be added that the results given above are not minutely accurate. 
They are drawn from various railroad surveys, which do not, themselves, 
exactly agree as to the elevation of their common point—Columbus. 
The limit of error will not, however, exceed five, or, at most, ten feet. 
The Scioto Valley, which has already been named as giving rise to the 
most conspicuous topographical features of the county, consists of two 
