U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
SEPTEMBER 2007
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR SEPTEMBER 2007
Prepared October 1, 2007
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the excessive to deficient range during September. Streamflow at
West Branch Delaware River at Walton was in the excessive range after being in the normal
range last month. Streamflow at Sacandaga River near Hope was in the deficient range for the
fourth consecutive month. Streamflow at Hudson River near Newcomb, Hudson River at Hadley,
Mohawk River at Cohoes, Sandy Creek near Adams, Independence River at Donnattsburg, West
Branch Oswegatchie River near Harrisville, Little Salmon River at Bombay, and Ausable River
at Au Sable Forks was in the deficient range for the second consecutive month. All other
sites were in the normal range for the month. The lowest provisional period-of-record
minimum monthly mean discharge for September was recorded at two sites included in this
report: Hudson River at Hadley (86 years) and Sacandaga River near Hope (96 years).
The total New York City reservoir system was at 71.1 percent of capacity on September 28;
normal for this period is 75.4 percent of capacity.
Ithaca--Summary Report
Provisional streamflow conditions at sites monitored and included in this report for
western New York were in the normal to deficient range during September. Streamflow at
Unadilla River at Rockdale was in the normal range for the fourth consecutive month.
Streamflow at Susquehanna River at Conklin, Chenango River near Chenango Forks, Chemung
River at Chemung, and Fall Creek near Ithaca was in the normal range for the third
consecutive month. Streamflow at Genesee River at Wellsville was in the normal range for
the second consecutive month. Streamflow at Allegheny River at Salamanca was in the normal
range after being in the excessive range last month. Streamflow at Flint Creek at Phelps
was in the normal range after being in the deficient range last month. Streamflow at
Cattaraugus Creek at Gowanda and Oneida Creek at Oneida was in the deficient range after
being in the normal range last month. Streamflow at Tonawanda Creek at Batavia and Oatka
Creek at Garbutt was in the deficient range for the second consecutive month.
Coram--Summary Report
Provisional streamflow at Connetquot Brook near Central Islip was in the normal range
for the fourth consecutive month.
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Provisional Data for September 2007
MEAN FLOW FOR SELECTED GAGING STATIONS
Period
of record Flow Percent
Station (to date) (cfs) Exceedence Conditions
01306460 Connetquot Brook nr Central Islip 1978 22.8 35 Normal
01312000 Hudson River at Newcomb 1925-87,2002 33.0 97 Deficient
01318500 Hudson River at Hadley 1921 517 100 Deficient
01321000 Sacandaga River nr Hope 1911 53.8 100 Deficient
01334500 Hoosic River near Eagle Bridge 1910 277 52 Normal
01349150 Canajoharie Creek near Canajoharie 1993 3.99 62 Normal
01350000 Schoharie Creek at Prattsville 1902 122 39 Normal
01357500 Mohawk River at Cohoes 1917 1,110 87 Deficient
01371500 Wallkill River at Gardiner 1924 106 75 Normal
01372500 Wappinger Cr nr Wappingers Falls 1928 23.0 66 Normal
01387400 Ramapo River at Ramapo 1979 19.5 70 Normal
01413500 E Br Delaware River at Margaretville 1937 87.8 31 Normal
01420500 Beaver Kill at Cooks Falls 1913 112 61 Normal
01423000 W Br Delaware River at Walton 1950 335 18 Excessive
01426000 Oquaga Creek at Deposit **1941-73,2002 11.0 57 Normal
01502500 Unadilla River at Rockdale 1930-95,2001 128 57 Normal
01503000 Susquehanna River at Conklin 1912 442 71 Normal
01512500 Chenango River nr Chenango Forks 1912 400 58 Normal
01531000 Chemung River at Chemung 1903 503 39 Normal
03011020 Allegheny River at Salamanca 1903 437 52 Normal
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 112 85 Deficient
04217000 Tonawanda Creek at Batavia 1944 12.9 85 Deficient
04221000* Genesee River at Wellsville 1916 107 26 Normal
04230500 Oatka Creek at Garbutt 1945 27.2 79 Deficient
04234000 Fall Creek at Ithaca 1925 59.0 30 Normal
04235250 Flint Creek at Phelps 1960-95,2002 2.20 75 Normal
04243500 Oneida Creek at Oneida 1950 30.3 77 Deficient
04250750 Sandy Creek near Adams 1958-95,2002 7.28 91 Deficient
04256000 Independence River at Donnattsburg 1942 32.2 96 Deficient
04262500 W Br Oswegatchie R nr Harrisville 1916 55.3 96 Deficient
04270200 Little Salmon River at Bombay 1958-95,2002 29.0 79 Deficient
04275500 Ausable River at Au Sable Forks 1910-68,1990 158 95 Deficient
** Statistics used based on record for 1941-1973 water years
* Includes 04221500-Genesee River at Scio (1916-72)
MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for September 2007
INDEX OBSERVATION WELLS
Water levels in S1810 have been affected by changes in ground-water withdrawals or sewering. Water level in feet below
land-surface datum unless site noted with * which indicates reference to sea level or ** which indicates water level in
feet above land-surface datum. Statistics used for A-654(replacement) are from A-636 (adjusted) prior to 2003, for Cm-622
(replacement) are from Cm-46(adjusted) prior to 2003, and for U-1619(replacement) are from U-405(adjusted) prior to 2003.
All published data for A-654 prior to 2006 water year should be adjusted by +1.00 ft due to measuring point correction.
Record Percent
County Well No. begins Date Water Level Exceedence Conditions
Albany A-654 2002 09/30 9.71 15 Excessive
Allegany Ag-261 2002 09/30 6.01 - --
Allegany Ag-262 2002 09/30 1.09 - --
Broome Bm-128 1980 09/30 28.44 48 Normal
Broome Bm-129 1985 09/30 69.38 54 Normal
Cattaraugus Ct-121 1951 09/30 10.10 70 Normal
Cayuga Cy-7 1965 09/30 22.39 67 Normal
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-10 1939 09/30 28.71 15 Excessive
Chemung Cm-622 2002 09/30 24.86 55 Normal
Chenango Cn-12 1975 09/30 10.74 60 Normal
Clinton Cl-145 1992 09/30 23.13 42 Normal
Clinton Cl-242 2006 09/26 2.84 - --
Columbia Cb-1071 2004 09/26 12.98 - --
Columbia Cb-1072 2006 09/26 10.23 - --
Cortland C-998 2002 09/30 5.74 - --
Delaware D-503 2002 09/30 6.32 - --
Dutchess Du-321 1948 09/30 69.50 44 Normal
Dutchess Du-1009 1967 09/30 18.59 72 Normal
Erie E-1196 2004 09/30 14.06 - --
Essex Ex-150 2002 09/30 25.84 - --
Essex Ex-157 2006 09/24 18.69 - --
Franklin F-60 2005 09/30 3.48 - --
Franklin F-854 2005 09/30 32.56 - --
Fulton Fu-271 2002 09/30 15.83 - --
Genesee Gs-190 1998 09/30 31.62 51 Normal
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 09/30 15.03 74 Normal
Herkimer He-627 2004 09/27 29.35 - --
Jefferson J-176 2005 09/21 6.46 - --
Lewis L-174 2002 09/30 24.77 - --
Livingston Lv-330 2004 -- -- - --
Madison M-178 1975 09/30 10.46 90 Deficient
Monroe Mo-11 1984 09/30 8.28 45 Normal
Montgomery Mt-411 2004 09/24 35.67 - --
Niagara Ni-70 1973 09/30 11.02 99 Deficient
Niagara Ni-869 2003 09/30 7.02 - --
Oneida Oe-151 1926 09/30 27.55 96 Deficient
Oneida Oe-1457 2003 09/30 42.63 - --
Onondaga Od-1825 2004 -- -- - --
Onondaga Od-1833 2004 -- -- - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 09/30 4.27 - --
Orange O-2271 2002 09/30 7.00 - --
Orange O-2288 2007 09/20 7.10 - --
Orleans Ol-20 2004 09/30 21.42 - --
Oswego Ow-5013 2002 09/30 24.45 - --
Oswego Ow-5014 2002 09/30 24.51 - --
Otsego Og-23 1953 09/30 8.44 43 Normal
Putnam P-1205 2007 09/19 4.62 - --
Putnam P-1217 2005 09/30 17.36 - --
Rensselaer Re-703 1983 09/30 37.24 24 Excessive
Rockland Ro-18 1949 09/30 26.92 98 Deficient
Rockland Ro-543 2005 09/30 9.24 - --
St. Lawrence St-40 1953 09/30 7.81 51 Normal
St. Lawrence St-404 1958 09/30 16.11 95 Deficient
Saratoga Sa-529 1949 09/30 41.35 0 Excessive
Saratoga Sa-1285 2002 09/30 5.30 - --
Schenectady Sn-730 2004 09/30 8.85 - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 -- -- - --
Seneca Se-532 2005 -- -- - --
Seneca Se-533 2005 09/30 4.47 - --
Steuben Sb-472 1965 09/30 9.76 25 Normal
Suffolk *S1810 1976 09/18 51.86 30 Normal
Suffolk *S1812 1982 -- -- - --
Suffolk *S4271 1946 09/30 12.24 10 Excessive
Suffolk *S5517 1948 09/30 43.67 41 Normal
Suffolk *S8833 1951 09/30 17.05 16 Excessive
Sullivan Sv-535 2001 09/30 10.68 48 Normal
Tioga Ti-891 2003 -- -- - --
Tompkins Tm-985 2005 -- -- - --
Tompkins Tm-1968 2005 -- -- - --
Ulster U-1619 2002 09/30 18.10 63 Normal
Ulster U-1620 2005 09/20 29.61 - --
Warren Wr-80 2005 -- -- - --
Washington W-533 1974 09/30 7.69 96 Deficient
Wayne Wn-592 2004 -- -- - --
Westchester We-5020 2003 09/30 15.79 - --
Wyoming Wo-4 1974 09/30 13.88 99 Deficient
Yates Ya-180 2004 -- -- - --
INDEX OBSERVATION WELLS
LAKES AND RESERVOIRS
Elevation & Storage at End of Month
Reservoirs (Storage in million cubic feet) Current Year Last Year Average
01314500 Indian Lake nr Indian Lake, NY 3,266 3,501 2,876
01323500 Great Sacandaga Lake at Conklinville 20,950 26,420 22,240
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
September 30, 2007 94.93 September 30, 2006 95.56
Average (1939-2005) 94.89
Maximum daily 97.79 (1976) Minimum daily 92.91 (1941)
NOTES, DEFINITIONS, ETC.
Percent exceedence is, for example, the percentage of December monthly mean discharges for
period of record equal to or greater than the current December monthly mean discharge.
Median = 50th percentile, which means that, for the period of record included in the analysis,
50% of the values are greater than the median and 50% are less.
Deficient range = values below the 25th percentile - for the period of record included in the
analysis, 75% of the values are greater and 25% are less than this value.
Excessive range = values above the 75th percentile - for the period of record included in the
analysis, 25% of the values are greater and 75% are less than this value.
Normal range = values between the 25th and 75th percentiles.
