MODIFIED DRIFT ALONG CONTOOCOOK RIVER. 
119 
Heights of the Outlet and Deltas of the Lake which filled the Contoocook 
Valley through Hillsborough County in the Champlain Period.* 
Cutlet of lake, 14 miles south-east from 
Greenfield, being the lowest point of 
water-shed between Contoocook and 
Souhegan rivers (2 feet lower than 
the railroad summit), $63. 
Cragin pond, 830. 
Greenfield station, 834. 
Pollard pond, 810. 
Delta cut by the railroad 4 mile north- 
west from Greenfield station, nearly 
the same in height with the fair- 
ground, 864. 
Delta at Hancock village, $62. 
Delta at Clinton village, Antrim, 883. 
Delta south-west of Riley mt., Antrim, 
912-915. 
Delta on Hedgehog hill, Deering, 905-920. 
Delta 4 mile south-west from Hillsborough 
Centre, 940. 
Delta north-east of Hillsborough Upper 
Village, 942. 
Kames at church and cemetery between 
Hillsborough Upper and Lower Vil- 
lages, 930. 
The depth of this lake was from 200 to 350 feet, as will be seen from the following: 
Heights along Contoocook [iver. 
Foot and head of fall at North Peter- 
borough, 714-724. 
Head of Long fall, near county line, 546. 
At Hillsborough Bridge, foot of falls, 564; 
lower dam, 576; upper dam, 591. Same at Peterborough, 727-734. 
At Bennington, foot of falls, 606; Paper- River at county line, about 875. 
mill pond, 635; Kimball’s dam, 645; 
King’s dam, 655; Whitney’s dam, 
668; Powder-mill dam, 676. 
At length the melting of the ice along the lower part of the valley at 
the north-east met the already open portion which extended through 
Hillsborough county, and the drainage of the basin took its present 
* The heights from Greenfield to Paper Mill Village inclusive, given in Vol. 1, p. 268, are too low, requiring 
the addition of 36 feet to agree with recent surveys of R. S. Howe for the Hillsborough*& Peterborough Railroad, 
and with those of Hon. J. A. Weston for the Manchester & Keene and Monadnock railroads, published in Vol. 
I, p. 271. The heights given above are derived from the profiles of these railroads, or from special survey. They 
are stated in feet above the sea. 
Our levelling to determine the height of deltas gave opportunity to note also the water-power of two tributaries 
of the Contoocook. 
Heights along Great Brook, Antrim. Mouth of brook, 600; Thompson’s mill-pond, 624; Goodell’s saw-mill 
pond, 641; Goodell’s next pond, 657; Poor’s saw-mill pond, 672; Goodell’s cutlery-shop pond, 703; Kelsey & 
Co.’s pond, 717; Baptist and Methodist churches, South Antrim, 719; road at foot of sand delta, Clinton vil- 
lage, 853; hay-scales platform at Clinton village, E. Z. Hastings’s house, and his mill-pond, each, 914; Gregg’s 
pond, according to an old survey, 1064. 
Heights along North Branch in Hillsborough and Antrim, Mouth of Branch, 592 ; mouth of Beard’s brook, 
near foundry, 600; Foundry mill-pond, 618; Young’s (formerly Dickey’s) mill-pond, 702; Tannery mill-pond, 
728; still water, 4% mile above Hillsborough Lower Village, 750. (The following heights of this stream in Antrim 
are from survey by G. C. Patten, in 1874.) Foot of rapids, }4 mile east of W. Curtis’s, 755; Curtis’s dam, 852; 
foot of falls at North Branch village, 862; Parkhurst’s dam, 902; at Boutwell’s bridge, 1 mile above this village 
985 ; proposed reservoir of 100 acres above do., 1025; J. Loveren’s dam, 1077; foot of falls below do., 1024. : 
