272 



THE HYDROGRAPHY OF CECIL COUNTY 



List of Discharge Measurements Made on Octoraro Creek at 

 kowlandsville, md. 



Date. 



July 19 



August 3 



August 12.... 



August25 



September 30 

 October 6.... 

 October 17. .. 

 October 22... 

 October 26. .. 

 December 7.. 

 December 26. 



] 



January 24 . . 

 February 4-. 



March 15 



March 31 



April 15 



April 21 



May8 



May 20 



JuneS 



June 16... . ... 



June 28 



June 29 



July 15 



July 28 



August7 



Augustll 



August 19 



August28 



September 25 



Meter 

 Number. 



91 

 91 

 91 

 91 

 91 

 131 

 91 

 91 

 91 

 91 

 91 



Gage heig't 

 (feet). 



3.80 

 3.40 

 3.80 

 6.40 

 3.50 

 3.60 

 3.30 

 3.70 

 4.10 



4.20 



6.40 

 4.40 

 5.00 

 4.80 

 4.30 

 4.20 

 4.50 

 4.00 

 3.80 

 3.70 

 3.50 

 4.00 

 3.50 

 3.40 

 3.50 

 5.20 

 3.40 



Area of sec. Mean veloc. i Discharge 

 (sq. ft.) (ft. per sec.) I (sec. ft.) 



255 

 300 

 564 

 255 

 207 

 258 

 306 

 328 

 534 

 344 



542 

 351 

 390 

 372 

 340 

 329 

 354 

 326 

 271 

 259 

 240 

 317 

 268 

 253 

 265 

 447 

 201 

 268 

 429 



0.95 

 0.88 

 0.96 

 2.94 

 0.82 

 0.88 

 3.30 

 0.93 

 1.28 

 2.91 

 1.23 



2.79 

 1.51 

 1.70 

 1.93 

 1.48 

 1.42 

 1.51 

 1.26 

 1.22 

 0.73 

 0.77 

 1.22 

 0.81 

 0.74 

 0.64 

 2.33 

 0.57 

 0.76 

 2.60 



288 

 225 

 289 



1663 

 209 

 182 

 200 

 287 

 420 



1557 

 434 



1505 

 531 

 666 

 722 

 507 

 470 

 538 

 413 

 333 

 189 

 185 

 387 

 219 

 186 

 171 



1044 

 144 

 206 



1113 



SUSQUEHANNA RIVER. 



Susquehanna river is by far the largest and most important river 

 whose waters touch Cecil county. This river rises in Otsego Lake in 

 Otsego county, ~N. Y., at an elevation above the sea of about 1193 

 feet. The main stream, with its numerous large tributaries, forms the 

 largest river on the Atlantic slope of the United States, forming the 

 watershed between waters flowing north and west into the St. Law- 

 rence, the Mississippi and Great Lakes and those flowing into the 

 Atlantic streams. Its tributaries drain a part of the State of New 

 York, about one-half of the State of Pennsylvania and the north- 

 eastern portion of Maryland. Its total drainage area, as measured 

 by Mr. Henry Gannett, of the U. S. Geological Survey, is 27,655 

 square miles. Of this amount about 255 square miles are in the 

 State of Maryland. The drainage area of the Susquehanna varies 

 from a comparatively flat, though in part somewhat broken, area in 



