536 THE GEOLOGY OF MINNESOTA. 



^Elevations. 



Its highest point is where it breaks off squarely to the valley of Rock river, 

 about three miles north of Luverne, where it is known distinctively as the 

 mound, 1650 feet above the ocean. It here has an elevation of about 175 

 feet above the river, the uppermost forty to sixty feet consisting of rock. 

 This range of high land extends northward into Pipestone county, and 

 reaches there an elevation of over seventeen hundred feet, the same rock 

 causing it throughout. 



Elevations. By means of the railroad surveys that have crossed these counties there are 

 someMefinite data respecting their bight above the ocean, and from these and estimates based upon 

 them the contour-lines of the accompanying plate (No. 23) have been drawn. 



Southern Minnesota division of the Chicago, Milwaukee & Saint Paul railway. 



Miles from Feet above 

 La Crosse. the sea. 



Chanarambie creek, water at the last crossing 274.5 1521 



Edgerton 276.0 1550 



Bock river 279.0 1552 



Hatfleld 283.0 1662 



Highest point on the road 285.5 1744 



Pipestone City '. 289.0 1693 



Pipestone creek, water 293.0 1577 



Clausen 295.5 1629 



Flandreau 303.6 1550 



Woodstock branch of the Chicago, Saint Paul, Minneapolis & Omaha railway. 



Mites from Feet above 

 St. Paul. the sea. 



Murray and Pipestone county line, grade 202.5 



Woodstock 204.3 1822 



Rock river, water 208.3 1645 



Summit 211 .5 1785 



Pipestone City 215.4 1715 



Big Sioux river at Flandreau 230.8 1501 



Sioux Falls branch of the Chicago, Saint Paul, Minneapolis & Omaha railway . 



Summit, thre? miles east of the county line 199.5 1569 



Drake 203.7 1516 



Elk slough, grade 206.2 1469 



Summit, grade 207.1 1515 



Rock river, water 210.3 1423 



Luverne ... 211.1 1451 



Summit, grade 216.1 1543 



Beaver Creek depot - 219.3 1443 



Beaver creek, water 219.8 



State line 224.4 1383 



Valley Springs 225.2 1392 



Sioux Falls 1394 



Big Sioux river, Sioux Falls, low and high water. 240.4 1381-1385 



Branch from Luverne to Doon, Iowa. 



Luverne 211.1 1451 



Ash Creek depot 218.7 



State line : 221.6 1374 



Doon 238.9 1282 



