Weston. Rhode Island State Board of Health, 1894.
Report of the Results Obtained with Experimental Filters at the Pattaconset Pumping Station of the Providence Water Works. Relates particularly to the bacterial purification obtained with rapid filtration aided by sulphate of alumina. These were the first systematic experiments made with mechanical filters.
Wheeler. Journal of the New England Water Works Assoc., XI., p. 301. Covered Sand Filter at Ashland, Wis.
A description of the covered filters built by the author at Ashland Wis. for the purification of the bay water. Views and drawings.
APPENDIX XI.
THE ALBANY WATER-FILTRATION PLANT.
(Abridged from Proceedings American Society of Civil Engineers, Nov. 1899.)
Albany, N. Y., was originally supplied with water by gravity from certain reservoirs on small streams west and north of the city. In time, with increasing consumption, the supply obtained from these sources became inadequate, and an additional supply from the Hudson River was introduced. The water was obtained from the river through a tunnel under the Erie Basin, and a pumping-station was erected in Quackenbush Street to pump it to reservoirs, one of which served also as the distributing point for one of the gravity supplies. The intake, which was used first in 1873, drew water from the river opposite the heart of the city. In recent years, the amount of water drawn from this source has greatly exceeded that obtained from the gravity sources.
The Hudson River, at the point of intake, has a drainage area of 8240 square miles. Of this, 4541 square miles are tributary to the Hudson above Troy, 3493 are tributary to the Mohawk, and 168 are tributary to the Hudson below the Mohawk.
The minimum flow may be estimated at 1657 cubic feet per second, or 1,060,000,000 gallons per 24 hours, or at least fifty times the maximum consumption.
The cities and larger towns upon the river above the intake, with estimated populations and distances, are as follows:
| MOST IMPORTANT CITIES, TOWNS, AND VILLAGES ON THE WATERSHED OF THEHUDSON ABOVE ALBANY. | |||||
|---|---|---|---|---|---|
| Place. | County. | Approximate Distance above Intake, Miles. | Population in | ||
| 1880. | 1890. | 1900. (Estimated.) | |||
| Troy | Rensselaer | 4 | 56,747 | 60,956 | 65,470 |
| Watervliet | Albany | 4 | 8,820 | 12,967 | 19,040 |
| Green Island | Rensselaer | 5 | 4,160 | 4,463 | 4,788 |
| Cohoes | Albany | 8 | 19,416 | 22,509 | 26,450 |
| Lansingburg | Rensselaer | 8 | 7,432 | 10,550 | 14,980 |
| Waterford | Saratoga | 9 | (1,822) | 1,822 | (1,822) |
| Schenectady | Schenectady | 28 | 13,655 | 19,002 | 26,450 |
| Hoosic Falls | Rensselaer | 44 | 4,530 | 7,014 | 10,860 |
| Amsterdam | Montgomery | 44 | 9,466 | 17,336 | 31,730 |
| Glens Falls | Warren | 49 | 4,900 | 9,509 | 18,450 |
| Saratoga Springs | Saratoga | 51 | 8,421 | 11,975 | 17,010 |
| Johnstown | Fulton | 56 | 5,013 | 7,768 | 12,040 |
| Gloversville | Fulton | 58 | 7,133 | 13,864 | 26,930 |
| North Adams, Mass. | Berkshire | 68 | 10,191 | 16,074 | 25,340 |
| Adams, Mass. | Berkshire | 75 | 5,591 | 9,213 | 15,181 |
| Little Falls | Herkimer | 82 | 6,910 | 8,783 | 11,160 |
| Utica | Oneida | 107 | 33,914 | 44,007 | 57,090 |
| Rome | Oneida | 127 | 12,194 | 14,991 | 18,430 |
| 32 villages | 52,523 | 61,869 | 76,194 | ||
| Total, not including rural population | 272,838 | 354,672 | 479,415 | ||
| Per square mile | 33 | 43 | 59 | ||