U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
FEBRUARY 2007
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR FEBRUARY 2007
Prepared March 2, 2007
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the normal to deficient range. Streamflow at all sites reported
decreased from January to February. Adjustments were made to flows due to ice affect, except at a few sites, and seven sites were not included in this report due to extreme ice
conditions.
The total New York City reservoir system was at 88.2 percent of capacity on February 28;
normal for this period is 83.4 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 February. Streamflow at
Chemung River at Chemung and Cattaraugus Creek at Gowanda was in the normal range after
being in the excessive range last month. Streamflow at Susquehanna River at Conklin,
Unadilla River at Rockdale, Chenango River near Chenango Forks, Allegheny River at
Salamanca, Tonawanda Creek at Batavia, Genesee River at Wellsville, Oatka Creek at
Garbutt, Fall Creek near Ithaca, Flint Creek at Phelps, and Oneida Creek at Oneida
were all in the deficient range after being in the excessive range last month.
Coram--Summary Report
Mean flow at Connetquot Brook near Central Islip was in the excessive range for the
fifth consecutive month.
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Provisional Data for February 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 36.7 8 Excessive
01312000 Hudson River at Newcomb 1925-87,2002 168 39 Normal
01318500 Hudson River at Hadley 1921 e1,700 53 Normal
01321000 Sacandaga River nr Hope 1911 e620 48 Normal
01334500 Hoosic River near Eagle Bridge 1910 e670 61 Normal
01349150 Canajoharie Creek near Canajoharie 1993 excessive ice cover
01350000 Schoharie Creek at Prattsville 1902 excessive ice cover
01357500 Mohawk River at Cohoes 1917 3,310 74 Normal
01371500 Wallkill River at Gardiner 1924 e500 91 Deficient
01372500 Wappinger Cr nr Wappingers Falls 1928 e87.9 96 Deficient
01387400 Ramapo River at Ramapo 1979 e58.8 93 Deficient
01413500 E Br Delaware River at Margaretville 1937 e100 94 Deficient
01420500 Beaver Kill at Cooks Falls 1913 excessive ice cover
01423000 W Br Delaware River at Walton 1950 e180 95 Deficient
01426000 Oquaga Creek at Deposit **1941-73,2002 unavailable
01502500 Unadilla River at Rockdale 1930-95,2001 e410 83 Deficient
01503000 Susquehanna River at Conklin 1912 e1,870 80 Deficient
01512500 Chenango River nr Chenango Forks 1912 e882 94 Deficient
01531000 Chemung River at Chemung 1903 e1,260 75 Normal
03011020 Allegheny River at Salamanca 1903 1,110 89 Deficient
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 e614 73 Normal
04217000 Tonawanda Creek at Batavia 1944 127 88 Deficient
04221000* Genesee River at Wellsville 1916 e169 81 Deficient
04230500 Oatka Creek at Garbutt 1945 147 81 Deficient
04234000 Fall Creek at Ithaca 1925 e87.7 89 Deficient
04235250 Flint Creek at Phelps 1960-95,2002 e43.6 77 Deficient
04243500 Oneida Creek at Oneida 1950 e99.5 94 Deficient
04250750 Sandy Creek near Adams 1958-95,2002 excessive ice cover
04256000 Independence River at Donnattsburg 1942 excessive ice cover
04262500 W Br Oswegatchie R nr Harrisville 1916 250 74 Normal
04270200 Little Salmon River at Bombay 1958-95,2002 e73.4 51 Normal
04275500 Ausable River at Au Sable Forks 1910-68,1990 excessive ice cover
** Statistics used based on record for 1941-1973 water years
* Includes 04221500-Genesee River at Scio (1916-72)
e Estimate
MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for February 2007
INDEX OBSERVATION WELLS
The observation-well network generally reflects conditions in water-table sand and gravel aquifers and does not necessarily reflect conditions in confined and bedrock aquifers. 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 02/27 8.54 15 Excessive
Allegany Ag-261 2002 02/28 5.17 - --
Allegany Ag-262 2002 02/28 0.17 - --
Broome Bm-128 1980 02/28 24.27 41 Normal
Broome Bm-129 1985 02/28 67.54 29 Normal
Cattaraugus Ct-121 1951 02/28 7.07 65 Normal
Cayuga Cy-223 2005 02/27 13.67 - --
Chautauqua Cu-10 1939 02/28 18.88 32 Normal
Chemung Cm-622 2002 02/28 23.70 52 Normal
Chenango Cn-12 1975 02/28 9.19 67 Normal
Clinton Cl-145 1992 02/28 23.00 22 Excessive
Clinton Cl-242 2006 02/22 3.05 - --
Columbia Cb-1071 2004 -- -- - --
Columbia Cb-1072 2006 -- -- - --
Cortland C-998 2002 02/28 5.15 - --
Delaware D-503 2002 02/28 6.34 - --
Dutchess Du-321 1948 02/28 68.29 24 Excessive
Dutchess Du-1009 1967 02/28 15.95 85 Deficient
Erie E-1196 2004 02/26 11.97 - --
Essex Ex-150 2002 02/28 21.55 - --
Essex Ex-157 2006 02/20 17.69 - --
Franklin F-60 2005 02/28 4.46 - --
Franklin F-854 2005 02/28 31.72 - --
Fulton Fu-271 2002 02/28 14.24 - --
Genesee Gs-190 2002 02/28 26.98 - --
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 02/28 13.23 38 Normal
Herkimer He-627 2004 03/01 27.23 - --
Jefferson J-176 2005 02/07 1.84 - --
Lewis L-174 2002 02/28 22.59 - --
Livingston Lv-330 2004 02/26 9.16 - --
Madison M-178 1975 02/28 8.37 91 Deficient
Monroe Mo-11 1984 02/28 7.75 24 Excessive
Montgomery Mt-411 2004 02/06 33.02 - --
Niagara Ni-70 1973 02/28 2.68 43 Normal
Niagara Ni-869 2003 02/28 0.48 - --
Oneida Oe-151 1926 02/28 21.45 27 Normal
Oneida Oe-1457 2003 02/28 41.61 - --
Onondaga Od-1825 2004 02/28 12.17 - --
Onondaga Od-1833 2004 02/28 13.53 - --
Ontario **Ot-900 1955 02/27 well frozen
Ontario Ot-1133 2002 02/28 2.74 - --
Orange O-2271 2002 02/28 6.92 - --
Orleans Ol-20 2004 02/28 17.10 - --
Oswego Ow-5013 2002 02/28 22.77 - --
Oswego Ow-5014 2002 02/28 23.12 - --
Otsego Og-23 1953 02/28 7.47 99 Deficient
Putnam P-1217 2005 02/28 14.26 - --
Rensselaer Re-703 1983 02/28 37.75 29 Normal
Rockland Ro-18 1949 02/28 18.42 75 Normal
Rockland Ro-543 2005 02/28 6.72 - --
St. Lawrence St-40 1953 02/28 6.15 28 Normal
St. Lawrence St-404 1958 02/28 13.78 75 Normal
Saratoga Sa-529 1949 02/28 40.09 0 Excessive
Saratoga Sa-1285 2002 02/28 2.90 - --
Schenectady Sn-730 2004 02/09 6.77 - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 02/27 8.07 - --
Seneca Se-532 2005 02/28 0.53 - --
Seneca Se-533 2005 02/28 0.32 - --
Steuben Sb-472 1965 02/28 9.04 67 Normal
Suffolk *S1810 1976 -- -- - --
Suffolk *S1812 1982 02/21 50.28 0 Excessive
Suffolk *S4271 1946 02/28 12.84 1 Excessive
Suffolk *S5517 1948 02/28 47.24 0 Excessive
Suffolk *S8833 1951 02/28 18.52 0 Excessive
Sullivan Sv-535 2001 02/28 10.25 50 Normal
Tioga Ti-891 2003 02/26 19.55 - --
Tompkins Tm-985 2005 02/28 4.00 - --
Tompkins Tm-1968 2005 02/28 17.11 - --
Ulster U-1619 2002 02/28 16.83 25 Normal
Ulster U-1620 2005 -- -- - --
Warren Wr-80 2005 -- -- - --
Washington W-533 1974 02/28 7.02 93 Deficient
Wayne Wn-592 2004 02/27 8.78 - --
Westchester We-5020 2003 02/28 12.63 - --
Wyoming Wo-4 1974 02/28 12.43 49 Normal
Yates Ya-180 2004 02/27 4.15 - --
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 2,840 3,356 2,064
01323500 Great Sacandaga Lake at Conklinville 19,270 32,310 13,470
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
February 28, 2007 95.90 February 28, 2006 97.89
Average (1939-2005) 95.53
Maximum daily 98.99 (1981) Minimum daily 93.55 (1948)
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.
