852 



NEW YORK STATE MUSEUM 



furnished by the old canal, the channel would have to be thoroughly 

 cleared out for a distance of several miles and maintained in this 

 condition. The cost of such an undertaking, in addition to the 

 necessary expense of filtering the water, rendered this source 

 undesirable. 



Caledonia springs. These springs are nineteen miles southwest 

 of Rochester and have a flow of from 2,000,000 to 4,000,000 gallons 

 per day. A considerable length of the outlet is now used by the 

 State Fish Commissioners for hatching purposes, so that if the 

 water had been taken by the city, the intake would doubtless 

 have had to be located below the hatching station. Such a loca- 

 tion would have been undesirable unless the water were filtered. 

 In regard to elevation, Mr Marsh stated that this water could be 

 conveyed to the city in pipes, but, on account of the distance, not 

 at a hight sufficient for distribution by gravity. A pumping sta- 

 tion would therefore have been required in this case also and the 

 expense of constructing the works was estimated at more than 

 $200,000, exclusive of the filters. The permanent hardness of the 

 Caledonia springs is stated at about 70 parts per 100,000. Their 

 source is in the horizon of the gypsum. 



Mendon ponds. These four ponds are situated in the north- 

 western part of Mendon, and are the sources of the main branch 

 of Irondequoit creek. The one which was considered best adapted 

 as a source for a temporary supply for Rochester is called Deep 

 pond, and is about three and one half miles east of the Rush reser- 

 voir and seven miles south of the Mount Hope reservoir, both dis- 

 tances being measured in direct lines. Its surface is from 100 feet 

 to 110 feet below the level of the former reservoir, as determined by 

 a barometric observation. The outflow is about 500,000 gallons 

 per day. Under these circumstances they could not be regarded 

 as available for the needs of the city of Rochester. 



Pond near Bushnell Basin. This pond is located in the south- 

 western part of Perinton, and is somewhat more than eight miles 

 southeast of the Mount Hope reservoir in a direct line, while its 

 surface is about 208 feet below the level of said reservoir. Consid- 

 ered by itself, the pond could not be regarded as capable of fur- 

 nishing a daily supply of 2,000,000 gallons for a long period, since 

 it has a very small catchment area, no visible outlet, and does 



