Selected references_______________________________________________ iii 19. Low-flow frequency curves, Hudson River at Mechanicville__ 20. Stages of annual floods, Hudson River at Green Island, water years 1931-55____________^_______________________ 21. Flood-stage frequency graph, Hudson River at Mechanicvine. ___________________________________________ 40 22. Water-surface profiles during selected floods, Hudson River from lock 4 to Castleton-on-Hudson____________________ 23. Duration curve of daily flow, Hoosic River near Eagle Bridge. 24. Low-flow frequency curves, Hoosic River near Eagle Bridge._ 25. Section showing unconsolidated deposits along the Hudson River between Troy and Castleton-on-Hudson___________ CONTENTS V Page 26. Magnitude and number of floods, by months, Hudson River at Green Island______________________________________ D49 27. Flood-stage frequency curve, Hudson River at Green Island; based on records for water years 1931-55________________ 28. Duration curve of daily flow, Poesten Kill near Troy______ 51 29. Low-flow frequency curves, Poesten Kill near Troy_________ 30. Water used during 1953____-__-___________________ TABLES TABLE 1. Yields, composition, and relative importance of water-bearing Page formations in the Albany-Schenectady-Troy area.________ Dll 2. Water levels reported from wells in geologic formations in the Albany-Schenectady-Troy area, 1945-49_______________ 13 3. Chemical analyses of selected samples of ground water._____ 16 4. Summary of streamflow data___________________________ 18 5. Chemical analyses of selected samples of surface water._____ 24 6. Duration of low flow of selected small streams _____________ 29 7. Magnitude and frequency of annual low flow of selected small streams _____________________________________________ 30 8. Major public water-supply systems.______________________ 34 9. Chemical analyses of finished water from public water-supply systems.____________________________________________ 10.
The Utica-Rome area is along the Mohawk River and New York State Erie (Barge) Canal about midway between Lake Ontario and Albany. It encompasses about 390 square miles centered around the industrial cities of Utica and Rome.The Mohawk River, its tributary West Canada Creek, and a system of reservoirs and diversions to maintain the flow in the barge-canal system, assure an ample water supply for the foreseeable needs of the area. The water from these sources is generally of good chemical quality requiring little treatment, although that from the Mohawk River is only fair and may require some treatment for sensitive industrial processes. Additional surface water is available from smaller streams in the area, particularly Oriskany and Sauquoit Creeks, but the water from these sources is hard, and has a dissolved-solids content of more than 250 ppm (parts per million). Ground water is available in moderate quantities from unconsolidated sand and gravel deposits in the river valleys and buried bedrock channels, and in small quantities from bedrock formations and less permeable unconsolidated deposits. The quality of water from sand and gravel, and bedrock ranges from good to poor. However, where necessary, the quality can be improved with treatment.The Mohawk River is the source of the largest quantity of water in the area. The flow of the stream below Delta Dam equals or exceeds 108 mgd (million gallons per day) 90 percent of the time, and at Little Falls it equals or exceeds 560 mgd 90 percent of the time. The flow between these two points is increased by additions from Oriskany, Sauquoit, and West Canada Creeks and from many smaller tributary streams. The flow is also increased by diversions from outside the area, from the Black and Chenango Rivers and West Canada Creek for improvement of navigation in the Erie (Barge) Canal, and from West Canada and East Branch Fish Creeks for the public supplies of Utica and Rome. Much of the public-supply water eventually reaches the river by way of sewerage and industrial waste-disposal systems. The total diversion from these sources averages more than 92 mgd. An estimated 18.5 mgd is withdrawn from the Mohawk River by industry, mostly for nonconsumptive uses.Floods in the Utica-Rome area are not a frequent problem owing to the use of regulatory measures. The major streams fluctuate through a narrow range in stage and generally only a narrow strip along the streams is subject to flooding.
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