TESTIMONY OF OTTAWA RUN AND HEIGHT-OF-LAND. 



249 



Closing of Snake Creek outlet.— Snake creek is only nine miles south of 

 this low divide. After a time the rocky ridge at this place was lifted a 

 little higher than the lowest point of the same ridge near the southwest- 

 ern extremity of Grand lake and a second outlet now commenced to 

 pour over it into the above-mentioned rocky stream along its western 

 foot, and the Snake creek outlet has now also ceased to flow except at 

 high water. Both these channels start nearly at right angles to the 

 western shore of the lake, which has a length of 23 miles. The southern 

 outlet is very fresh looking and starts as a rapid even in the lake itself 

 outside of the general line of the shore. 



Testimony of the Height-of-land. 



'inJk ^Harrow 



/bint 



Mandiy Say 



w 



V V 



\ \ 



\\ 



'M4P ofSaKtLPoint in the 

 Mrth, WieUrm ofGrnndLake 

 J having former rwrthmard/tow oi 'water, 

 3y J>r.R.3eU. 



Seal* 2ft rraUs to 1 buths 



L 



J_ 



The canal route across the height-of-land to Bell river leaves Grand 

 lake by Sandy portage about 4 miles north of Mink narrows, already 

 mentioned. In this distance 

 wide flats of sand covered 

 with coarse grass extend from 

 either side, leaving only a 

 narrow channel in the center 

 of the arm. This is the only 

 part of the lake in which such 

 a condition exists, and it is a 

 striking evidence of the per- 

 manent lowering of the water. 



The banks of the Long nar- 

 rows are high and rocky, and 

 at their northern termination 

 the eastern shoreline turns 

 abruptly away. Here we find exactly what might be expected — a well- 

 developed point of sand and gravel, raised several feet above the present 

 level of the lake, leaves the high ground at the extremity of the narrows 

 and juts out for 300 or 400 yards in the direction of the former strong- 

 northeastward current (figure 1). The present feeble flow of the water 

 in the opposite direction has had little or no effect as yet in modifying 

 the characteristic form of this point. 



This locality and the topography of the country around the height-of- 

 land are shown on the accompanying sketch map (plate 24). It will be 

 seen that the probable course of the old north-flowing channel leaves 

 Grand lake where the north arm bends west, and that it crosses a swamp 

 to reach Brushy creek, the southernmost branch of Bell river. The three 

 ponds on the canoe route lying west of the old channel have an elevation 



XXXVI— Bull. Geol. Soc. Am., Vol. 8, 1896 



Figure 1.— Sand Point. 



