U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
SEPTEMBER 2009
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR SEPTEMBER 2009
Prepared October 1, 2009
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York varied within the region from normal to excessive during September with most
gages in the normal range. Streamflow at Sacandaga River near Hope, Hoosic River near Eagle
Bridge, and West Branch Delaware River at Walton was in the excessive range for the fourth
consecutive month. All other sites were in the normal range, most of which were in the
excessive range last month.
The total New York City reservoir system was at 90.5 percent of capacity on September 30;
normal for this period is 75.0 percent of capacity.
Ithaca--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report for
western New York were in the normal or excessive range for the month of September, with
most in the normal range. Chenango River near Chenango Forks was in the excessive range for
the second consecutive month. Unadilla River at Rockdale and Susquehanna River at Conklin
were in the normal range after being in the excessive range for the last three months.
Flint Creek at Phelps was in the normal range for the second consecutive month. All other
sites were in the normal range after being in the excessive range last month.
Coram--Summary Report
Provisional streamflow at Connetquot Brook near Central Islip was in the normal range
for the second consecutive month.
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Provisional Data for September 2009
MEAN FLOW FOR SELECTED GAGING STATIONS
Period
of record Flow Percent
Station (to date) (cfs) Exceedence Conditions
01306460 Connetquot Brook nr Central Islip 1978 23.5 37 Normal
01312000 Hudson River at Newcomb 1925-87,2002 126 62 Normal
01318500 Hudson River at Hadley 1921 1,220 43 Normal
01321000 Sacandaga River nr Hope 1911 468 21 Excessive
01334500 Hoosic River near Eagle Bridge 1910 460 24 Excessive
01349150 Canajoharie Creek near Canajoharie 1993 9.57 41 Normal
01350000 Schoharie Creek at Prattsville 1902 163 30 Normal
01357500 Mohawk River at Cohoes 1917 2,320 34 Normal
01371500 Wallkill River at Gardiner 1924 340 38 Normal
01372500 Wappinger Cr nr Wappingers Falls 1928 60.2 37 Normal
01387400 Ramapo River at Ramapo 1979 52.3 41 Normal
01413500 E Br Delaware River at Margaretville 1937 82.3 35 Normal
01420500 Beaver Kill at Cooks Falls 1913 211 39 Normal
01423000 W Br Delaware River at Walton 1950 256 23 Excessive
01502500 Unadilla River at Rockdale 1930-95,2001 376 25 Normal
01503000 Susquehanna River at Conklin 1912 1,320 27 Normal
01512500 Chenango River nr Chenango Forks 1912 1,180 17 Excessive
01531000 Chemung River at Chemung 1903 414 48 Normal
03011020 Allegheny River at Salamanca 1903 601 40 Normal
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 295 35 Normal
04217000 Tonawanda Creek at Batavia 1944 39.3 38 Normal
04221000* Genesee River at Wellsville 1916 87.4 30 Normal
04230500 Oatka Creek at Garbutt 1945 50.7 28 Normal
04234000 Fall Creek near Ithaca 1925 58.1 32 Normal
04235250 Flint Creek at Phelps 1960-95,2002 3.89 64 Normal
04243500 Oneida Creek at Oneida 1950 44.6 54 Normal
04250750 Sandy Creek near Adams 1958-95,2002 27.3 69 Normal
04256000 Independence River at Donnattsburg 1942 70.3 66 Normal
04262500 W Br Oswegatchie R nr Harrisville 1916 136 65 Normal
04270200 Little Salmon River at Bombay 1958-95,2002 32.9 66 Normal
04275500 Ausable River at Au Sable Forks 1910-68,1990 266 52 Normal
* Includes 04221500-Genesee River at Scio (1916-72)
MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for September 2009
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 9/30 9.04 10 Excessive
Albany A-666 2008 9/25 5.98 - --
Allegany Ag-261 2002 9/30 5.42 32 Normal
Allegany Ag-262 2002 9/30 -0.29 39 Normal
Broome Bm-128 1980 9/30 26.31 41 Normal
Broome Bm-129 1985 9/30 68.48 40 Normal
Cattaraugus Ct-121 1951 9/30 8.50 51 Normal
Cattaraugus Ct-2498 2009 9/30 28.78 - --
Cayuga Cy-7 1965 9/30 20.49 46 Normal
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-5 1949 9/30 1.98 5 Excessive
Chautauqua Cu-862 2009 9/30 34.55 - --
Chemung Cm-622 2002 9/30 24.48 30 Normal
Chenango Cn-12 1975 9/30 9.07 15 Excessive
Clinton Cl-145 1992 9/30 23.94 97 Deficient
Clinton Cl-242 2006 -- -- - --
Columbia Cb-1071 2004 9/30 10.95 - --
Columbia Cb-1072 2006 -- -- - --
Cortland C-586 2008 9/24 7.84 - --
Cortland C-998 2002 9/30 4.92 15 Excessive
Delaware D-503 2002 9/30 5.69 23 Excessive
Delaware D-522 2009 9/30 1.46 - --
Dutchess Du-321 1948 9/30 68.50 15 Excessive
Dutchess Du-1009 1967 9/30 17.14 48 Normal
Erie E-1196 2004 9/30 12.70 - --
Essex Ex-150 2002 9/30 22.22 22 Excessive
Essex Ex-157 2006 -- -- - --
Franklin F-60 2005 9/30 3.56 - --
Franklin F-854 2005 9/30 33.57 - --
Fulton Fu-271 2002 9/30 15.09 44 Normal
Genesee Gs-190 1998 9/30 31.79 52 Normal
Genesee Gs-217 2008 -- -- - --
Greene G-644 2003 9/22 19.78 - --
Greene G-831 2006 9/21 7.94 - --
Hamilton H-3 1966 9/30 13.77 30 Normal
Herkimer He-627 2004 9/30 29.88 - --
Herkimer He-1836 2009 -- -- - --
Jefferson J-176 2005 9/30 5.46 - --
Jerrerson J-178 2009 9/29 19.14 - --
Lewis L-174 2002 9/30 23.03 0 Excessive
Livingston Lv-330 2004 9/30 11.30 - --
Madison M-178 1975 9/30 9.47 40 Normal
Madison M-292 2009 9/23 138.01 - --
Monroe Mo-11 1984 9/30 8.63 54 Normal
Montgomery Mt-411 2004 9/30 33.79 - --
Niagara Ni-70 1973 9/30 5.30 11 Excessive
Niagara Ni-869 2003 9/30 1.41 - --
Oneida Oe-151 1926 9/30 26.28 69 Normal
Oneida Oe-1457 2003 9/30 43.30 - --
Oneida Oe-1466 2007 -- -- - --
Onondaga Od-1825 2004 9/30 12.95 - --
Onondaga Od-1833 2004 9/30 14.39 - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 9/30 3.12 34 Normal
Orange O-2271 2002 9/30 6.83 55 Normal
Orange O-2288 2007 9/30 5.30 - --
Orleans Ol-20 2004 9/30 20.09 - --
Orleans Ol-27 2009 9/30 42.32 - --
Oswego Ow-5013 2002 9/30 23.66 53 Normal
Oswego Ow-5014 2002 9/30 23.27 13 Excessive
Otsego Og-23 1953 9/30 6.91 19 Excessive
Putnam P-1205 2007 -- -- - --
Putnam P-1217 2005 9/30 14.74 - --
Rensselaer Re-703 1983 9/30 36.69 22 Excessive
Rockland Ro-18 1949 9/30 23.07 61 Normal
Rockland Ro-543 2005 9/30 8.52 - --
St. Lawrence St-40 1953 9/30 6.90 20 Excessive
St. Lawrence St-404 1958 9/30 14.74 27 Normal
Saratoga Sa-529 1949 9/30 41.61 5 Excessive
Saratoga Sa-1285 2002 9/30 3.20 17 Excessive
Schenectady Sn-730 2004 9/30 7.62 - --
Schoharie So-602 2005 9/24 24.84 - --
Schoharie So-604 2006 9/24 9.58 - --
Schuyler Sy-706 2003 9/30 9.04 - --
Schuyler Sy-722 2009 9/24 38.15 - --
Seneca Se-532 2005 9/30 2.47 - --
Seneca Se-533 2005 9/30 2.62 - --
Steuben Sb-472 1965 9/30 10.17 57 Normal
Suffolk *S1810 1976 9/30 52.68 24 Excessive
Suffolk *S1812 1982 9/16 48.13 17 Excessive
Suffolk *S4271 1946 9/30 11.78 21 Excessive
Suffolk *S5517 1948 9/30 43.38 47 Normal
Suffolk *S8833 1951 9/29 16.83 47 Normal
Sullivan Sv-535 2001 9/30 10.35 44 Normal
Tioga Ti-891 2003 9/30 25.01 - --
Tompkins Tm-985 2005 -- -- - --
Tompkins Tm-1968 2005 9/30 17.93 - --
Ulster U-1619 2002 9/30 16.34 0 Excessive
Ulster U-1620 2005 9/30 27.92 - --
Warren Wr-80 2005 9/30 19.18 - --
Warren Wr-84 2008 -- -- - --
Washington W-533 1974 9/30 7.11 29 Normal
Wayne Wn-592 2004 9/30 9.06 - --
Westchester We-5020 2003 9/30 13.42 - --
Wyoming Wo-4 1974 9/30 13.39 45 Normal
Yates Ya-180 2004 9/30 5.90 - --
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 3,457 3,455 2,884
01323500 Great Sacandaga Lake at Conklingville 26,720 26,270 22,270
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
September 30, 2009 95.44 September 30, 2008 95.97
Average (1939-2007) 94.90
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.
