CHAPTER XXXV. 
REPORT ON THE GEOLOGY OF CRAWFORD COUNTY. 
BY N. H. WINCHELL. 
SITUATION AND AREA. 
Crawford county les north from the center of the State, and about 
midway between that point and Lake Erie. It is bounded north by 
Seneca and Huron, east by Richland, south by Morrow and Marion, and 
west by Wyandot, and has an area of about eleven congressional towns, 
situated so as to give it nearly the form of a square. Its total area is 
252,156 acres, of which 138,368 are arable, 37,074 meadow and pasture 
lands, and 76,714 uncultivated or woodland. The average value, exclu- 
sive of buildings, is $29.78 per acre. 
NATURAL DRAINAGE. 
Jt lies on the summit of the great watershed, embracing the headwaters 
of some of the principal rivers of the State, that leave it in opposite 
directions. In the north-eastern corner of the county are a few small 
tributaries that join the Huron River in a northerly direction. Those 
of the Scioto and Olentangy have a general south-westerly direction 
until they are well off the watershed and on the southern slope. The 
upper waters of the Sandusky River, including its tributaries, the Syca- 
more Creek, Cass Run, and Broken Sword Creck, have a noticeable flow 
‘south-westwardly and westerly along {the direction of the general water- 
shed until they are outside of the limits of the county, when they reach 
the greater valley of the Sandusky; then they turn nearly at right 
angles north-westerly and unite with that river. The streams are gen- 
-erally small, yet large enough to afford, in favorable situations, ample 
-water-power for flouring and manufactures. The flatness of the county 
generally, except in the eastern tier of towns, is unfavorable for the 
production of water-powers. The rivers rarely strike the bed-rock, and 
hence rarely have waterfalls or rapids that can be so utilized. 
