656 



GEOLOGICAL SUEVEY OF THE TEEEITOEIES. 



Feet. 



Various datum-planes. 



® g- 



.2 o o 



New Albany, L. W. in Ohio Eiver, by L. K. A. & C. 



E.E. 



New Albany, passenger depot 



New Albany, L. W. of 1857 in Ohio Eiver 



(This was not one of the years of lowest water, but 



it was probably about four feet above it.) 



Louisville, L. W 



LouisvUle, L. W. 1857 



Evansville, L. "W 



Evansville rail, by E. & C. V. K. R 



Vincennea 



Evansville, L. W. Ohio Eiver 



Evansville, depot rail 



Evansville, H. W. 1847 



By survey for E. & I. R. E., ,H. W. 1847 



Evansville Railroad track, by St. L. & S. E. E. R 



Evansville Railroad track 



Evansville, L. W 



388. 00 



Below Greencastle. 



Above New Albany, L. W 



81.00 



36.00 



434. 39 



Below Vincennes . 



do 



Above M.T 



334. 54 



Below Union depot track 

 Below Saint Louis directrix 



451. 75 

 379. 75 



403. 75 



353. 39 

 398. 39 



387. 22 



393. 08 

 348. 08 



ELEVATION OF CAIRO. 



First determination. 



Cairo, I. C. E. R. track on levee, by C. & V. R. R . . . 



Do 



Cairo, H. W. Ohio Eiver, by C. & V. R. R 



Do 



Cairo city-base, by engineer in charge of levees ... 

 Cairo city-base, ordinary L. W 



Second determination. 



Cairo, H. "W. Ohio River, by mean of four routes, 

 (see discussion of change in Saint Louis directrix, 



p.-) 



Cairo, H.W.Ohio River 



Cairo city -base 



Do 



Third Determination. 



Cairo, H. W. 1858 in Ohio River. 

 Cairo city-base 



Fourth determination. 



Cairo, H. W. Ohio River. 



Do 



Cairo, city -base 



Final results. 



Cairo city base : 



Eirst determination 



Second determination .• 



Third determination 



Eourth determination 



Mean 



Adopted result 



(By report of engineer in charge of levee construction,) 



Cairo, extreme L. W. October 15, 1871 



Cairo, ordinary L. W 



Cairo, H. W. 1858 



Cairo, H. AV. 1862 



Cairo, H.W. 1867 



Cairo, Illinois Central track on levee 



Cairo Hotel, northeast corner , 



Cairo, Mississippi levee 



96.5 

 '97.66 

 '43.06 



96.05 



41.00 



258. 50 



294. 89 

 291. 24 

 291. 13 

 287. 65 

 291. 23 



11.91 

 0.00 

 40.38 

 41,69 

 41.81 

 43 to 43. 5 

 43.26 

 44.00 



Below Vincennes 



Below Vincennes 



BelowIUinois Central track 



Below Saint Louis directrix 



Belowmean of highestfloods 



Above M. T. New Orleans . 



Below Chicago directrix . 



By Cincinnati 



By Saint Louis . . . 

 By New Orleans . 

 By Chicago 



Below city.base . 



Above city-base. 



do... 



do 



, do 



, do 



do 



337. 39 



'294.' 89 



332. 24 



331. 51 

 291. 13 



328. 65 

 287. 65 



291. 23 



