[02 



SURFACE GEOLOGY. 



Recapitulation of Modified Drift of Pemigewasset and Merri- 

 mack River. 



Mouth of East Branch 



Woodstock, 



West Thornton, 



2 miles south, . 

 4 " " . 

 West Campton, 



3 miles south, . 

 Livermore falls, 

 Plymouth, . 

 South line of Plymouth 



Ashland, .... 

 2 miles south, . . . 

 New Hampton, . . 



Bristol, 



Mouth of Smith's river 



Hill, 



Mouth of Salmon br'k 

 Franklin, . . . 

 Webster place, . 

 North Boscawen, 

 Boscawen, . . . 

 Fishcrville, . . 

 West Concord, . 

 Concord, . . . 



Dis 



miles from Pro- 

 file lake. 



17-5 

 19-5 



21.7 



24.7 

 26.3 



57 



60 



63-5 



66 



69-5 



72 



15.8 

 17.8 

 19. 



25- 



26. 



36.5 



41 



45.2 



47-5 



51 



54-7 



58 



60.7 



64 



68.4 



71-5 



75-5 



79-5 



HEIGHTS IN FEET ABOVE THE SEA. 



710 

 627 

 576 



565 

 555 

 540 

 520 



505-483 

 468 

 463 

 459 

 450 

 438 

 352 

 320 

 305 

 300 



295-269 

 260 

 256 



Altitudes for reference, and remarks. 



No prominent tribiitayy deltas occur in this 

 valley. 



Profile lake, about 1950. 



Woodstock town-house, 734 ; bridge, 649. 



West Thornton bridge, 596. 



Livermore Falls bridge, 561 ; dam, 511. 



Plymouth railroad station, 490. 



Ashland station, 562. 



New Hampton bridge (centre), 462. 



Bristol station, 369 ; Main St. bridge, 469. 



Newfound lake, 590. 



Railroad bridge, Smith's river, 336. 



Hill station, 335; bridge, 331. 



Franklin sta,, 363.26; bridge (centre), 304. 



June, of N. R. R. and Bristol Branch, 364. 



Webster Place station, 295. 



North Boscawen station, 290. 



Boscawen station, 274. 



Fisherville, railroad bridge, 268. 



W. Concord sta., 353 ; E. Concord sta., 246. 



Concord station, 252.39 ; state house, 292. 



Datum for city levels (called o), 225.29. 



Top of city water-works dam, 412. 



Railroad bridge, Merrimack river, 247. 



" " Soucook river, 221. 



" " Suncook river, 243. 



Hooksctt sta., 206 ; R. R. bridge south, 205. 

 Martin's Ferry station, 199. 

 Amoskeag Falls dam, 179; flash-boards, 181. 

 Manchester station, 180.83. 

 Datum for city levels (called o), 108.98. 

 Massabesic lake, 256. 



Manchester & No. Weare R. R. bridge, 169. 

 GofF's Falls station and bridge, 146. 

 Reed's Ferry station, 137. 

 Railroad bridge, Souhegan river, 128. 

 Thornton's Ferry station, 125. 

 Railroad bridge, Pennichuck brook, 127. 

 Nashua station. Concord Railroad, 123. 

 Datum for city levels (called o), 93.10. 

 Reservoir of water-works, 247. 

 Nashua & Rochester Railroad bridge, 126. 

 Pawtucket Falls dam, Lowell, 87. 

 Essex Company's dam, Lawrence, 39. 



This river is affected by tide to Mitchell'.s 

 falls, ■2Y2, miles above Haverhill, Mass. 



Along Contoocook River. 

 Mouth of river, Fisherville, 249. 

 Borough dam, about 355. 

 Mast Yard station, 374. 

 Contoocook station, 373. 

 River above do., about 365. 

 West Hopkinton station, 392. 

 Henniker station, 439. 

 River below Henniker, 389. 

 Foot of Long fall, 433; head of do., 546. 

 Hillsborough I5ridge station, 574. 

 Foot and head of falls in the river at Hills- 

 borough Bridge, 564-591. 



at Bennington, 606-676. 



" North Peterborough, 714-724. 



" Peterborough, 727-734. 

 Peterborough station, 744. 

 River at county line, about 875. 

 East Jaffrey station, 1032. 

 3 ponds in north part of Rindge, each 11 14. 



