U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
APRIL 2009
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR APRIL 2009
Prepared May 1, 2009
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the deficient to normal range during April. Streamflow at Wallkill
River at Gardiner, Wappinger Creek near Wappingers Falls, and Ramapo River at Ramapo was in the
deficient range for the second consecutive month. Streamflow at Hoosic River near Eagle Bridge,
Canajoharie Creek near Canajoharie, Schoharie Creek at Prattsville, Mohawk River at Cohoes,
East Branch Delaware River at Margaretville, West Branch Delaware River at Walton, Independence
River at Donnattsburg, and West Branch Oswegatchie River near Harrisville was in the deficient
range for the first consecutive month. Streamflow at all other sites was in the normal range.
A new record-low monthly mean discharge for April was recorded at Canajoharie Creek near
Canajoharie (16 years).
The total New York City reservoir system was at 96.2 percent of capacity on April 29;
normal for this period is 99.7 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 deficient to normal range for the month of April, with most gages
in the deficient range. After being in the excessive range for two months, Cattaraugus Creek at
Gowanda had become deficient for the month of April. After being in the excessive range for the
month of March, Unadilla River at Rockdale was in the deficient range for April. After nine
months of being in the normal range, Chemung river at Chemung is now in the deficient range.
Susquehanna River at Conklin, and Chenango River near Chenango Forks were in the deficient
range after three months of normal flows. Streamflow was deficient at Allegheny River at
Salamanca after two months of being in the normal range. Streamflow at Tonawanda Creek at
Batavia, Genesee River at Wellsville, Oatka Creek at Garbutt, Flint Creek at Phelps, and
Oneida Creek at Oneida were in the deficient range after being in the normal range for the
month of March. Streamflow at Fall Creek at Ithaca was in the normal range for the fourth
consecutive month.
Coram--Summary Report
Provisional streamflow at Connetquot Brook near Central Islip was in the normal range
for the third consecutive month.
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Provisional Data for April 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 30.8 64 Normal
01312000 Hudson River at Newcomb 1925-87,2002 1,250 35 Normal
01318500 Hudson River at Hadley 1921 7,180 72 Normal
01321000 Sacandaga River nr Hope 1911 2,900 72 Normal
01334500 Hoosic River near Eagle Bridge 1910 1,390 85 Deficient
01349150 Canajoharie Creek near Canajoharie 1993 52.3 100 Deficient
01350000 Schoharie Creek at Prattsville 1902 512 92 Deficient
01357500 Mohawk River at Cohoes 1917 8,330 87 Deficient
01371500 Wallkill River at Gardiner 1924 1,080 76 Deficient
01372500 Wappinger Cr nr Wappingers Falls 1928 276 82 Deficient
01387400 Ramapo River at Ramapo 1979 148 76 Deficient
01413500 E Br Delaware River at Margaretville 1937 276 98 Deficient
01420500 Beaver Kill at Cooks Falls 1913 663 75 Normal
01423000 W Br Delaware River at Walton 1950 539 97 Deficient
01502500 Unadilla River at Rockdale 1930-95,2001 1,030 89 Deficient
01503000 Susquehanna River at Conklin 1912 3,540 96 Deficient
01512500 Chenango River nr Chenango Forks 1912 3,300 85 Deficient
01531000 Chemung River at Chemung 1903 2,520 95 Deficient
03011020 Allegheny River at Salamanca 1903 2,480 99 Deficient
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 965 84 Deficient
04217000 Tonawanda Creek at Batavia 1944 241 93 Deficient
04221000* Genesee River at Wellsville 1916 294 98 Deficient
04230500 Oatka Creek at Garbutt 1945 231 92 Deficient
04234000 Fall Creek near Ithaca 1925 298 68 Normal
04235250 Flint Creek at Phelps 1960-95,2002 108 88 Deficient
04243500 Oneida Creek at Oneida 1950 229 77 Deficient
04250750 Sandy Creek near Adams 1958-95,2002 654 42 Normal
04256000 Independence River at Donnattsburg 1942 353 84 Deficient
04262500 W Br Oswegatchie R nr Harrisville 1916 980 84 Deficient
04270200 Little Salmon River at Bombay 1958-95,2002 217 64 Normal
04275500 Ausable River at Au Sable Forks 1910-68,1990 1,450 73 Normal
* Includes 04221500-Genesee River at Scio (1916-72)
MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for April 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 4/30 7.53 28 Normal
Albany A-666 2008 4/09 4.99 - --
Allegany Ag-261 2002 4/30 5.58 89 Deficient
Allegany Ag-262 2002 4/30 -0.32 78 Deficient
Broome Bm-128 1980 4/30 24.00 72 Normal
Broome Bm-129 1985 4/30 67.78 72 Normal
Cattaraugus Ct-121 1951 4/30 6.66 92 Deficient
Cattaraugus Ct-2498 2009 4/30 25.23 - --
Cayuga Cy-7 1965 4/30 18.98 100 Deficient
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-5 1949 4/30 2.49 58 Normal
Chautauqua Cu-862 2009 4/30 34.45 - --
Chemung Cm-622 2002 4/30 23.43 79 Deficient
Chenango Cn-12 1975 4/30 9.02 79 Deficient
Clinton Cl-145 1992 4/30 22.51 68 Normal
Clinton Cl-242 2006 4/13 1.84 - --
Columbia Cb-1071 2004 4/30 10.29 - --
Columbia Cb-1072 2006 -- -- - --
Cortland C-586 2008 -- -- - --
Cortland C-998 2002 4/30 4.70 80 Deficient
Delaware D-503 2002 4/30 5.92 100 Deficient
Delaware D-522 2009 4/30 1.17 - --
Dutchess Du-321 1948 4/30 67.89 30 Normal
Dutchess Du-1009 1967 4/30 13.78 82 Deficient
Erie E-1196 2004 4/30 11.68 - --
Essex Ex-150 2002 4/30 16.78 73 Normal
Essex Ex-157 2006 4/15 17.68 - --
Franklin F-60 2005 4/30 3.07 - --
Franklin F-854 2005 4/30 30.22 - --
Fulton Fu-271 2002 4/30 14.28 86 Deficient
Genesee Gs-190 1998 4/30 23.61 55 Normal
Genesee Gs-217 2008 4/14 7.19 - --
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 4/30 11.31 31 Normal
Herkimer He-627 2004 4/30 28.50 - --
Herkimer He-1836 2009 -- -- - --
Jefferson J-176 2005 4/30 1.49 - --
Jerrerson J-178 2009 -- -- - --
Lewis L-174 2002 4/30 21.61 14 Excessive
Livingston Lv-330 2004 4/30 8.63 - --
Madison M-178 1975 4/30 7.59 88 Deficient
Madison M-292 2009 -- -- - --
Monroe Mo-11 1984 4/30 8.27 92 Deficient
Montgomery Mt-411 2004 4/30 32.79 - --
Niagara Ni-70 1973 4/30 2.72 69 Normal
Niagara Ni-869 2003 4/30 0.23 - --
Oneida Oe-151 1926 4/30 17.16 40 Normal
Oneida Oe-1457 2003 4/30 42.22 - --
Oneida Oe-1466 2007 -- -- - --
Onondaga Od-1825 2004 4/30 11.22 - --
Onondaga Od-1833 2004 4/30 13.15 - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 4/30 2.61 61 Normal
Orange O-2271 2002 4/30 6.68 88 Deficient
Orange O-2288 2007 4/30 4.31 - --
Orleans Ol-20 2004 4/30 17.80 - --
Orleans Ol-27 2009 4/30 40.70 - --
Oswego Ow-5013 2002 4/30 22.38 78 Deficient
Oswego Ow-5014 2002 4/30 22.69 78 Deficient
Otsego Og-23 1953 4/30 6.80 100 Deficient
Putnam P-1205 2007 5/01 2.77 - --
Putnam P-1217 2005 4/30 13.16 - --
Rensselaer Re-703 1983 4/30 36.69 37 Normal
Rockland Ro-18 1949 4/30 17.29 90 Deficient
Rockland Ro-543 2005 4/30 6.97 - --
St. Lawrence St-40 1953 4/30 4.87 42 Normal
St. Lawrence St-404 1958 4/30 13.27 62 Normal
Saratoga Sa-529 1949 4/30 41.34 5 Excessive
Saratoga Sa-1285 2002 4/30 2.37 100 Deficient
Schenectady Sn-730 2004 4/30 6.69 - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 4/30 7.04 - --
Schuyler Sy-722 2009 -- -- - --
Seneca Se-532 2005 4/30 0.95 - --
Seneca Se-533 2005 4/30 0.43 - --
Steuben Sb-472 1965 4/30 8.89 98 Deficient
Suffolk *S1810 1976 4/30 51.18 49 Normal
Suffolk *S1812 1982 4/30 49.14 11 Excessive
Suffolk *S4271 1946 4/30 11.84 28 Normal
Suffolk *S5517 1948 4/30 41.67 60 Normal
Suffolk *S8833 1951 4/30 16.95 68 Normal
Sullivan Sv-535 2001 4/30 9.36 61 Normal
Tioga Ti-891 2003 4/30 17.61 - --
Tompkins Tm-985 2005 4/30 3.90 - --
Tompkins Tm-1968 2005 4/30 14.73 - --
Ulster U-1619 2002 4/30 16.65 59 Normal
Ulster U-1620 2005 4/30 25.80 - --
Warren Wr-80 2005 4/30 16.24 - --
Warren Wr-84 2008 4/23 36.76 - --
Washington W-533 1974 4/30 6.40 92 Deficient
Wayne Wn-592 2004 4/30 8.38 - --
Westchester We-5020 2003 4/30 11.63 - --
Wyoming Wo-4 1974 4/30 12.04 81 Deficient
Yates Ya-180 2004 4/30 3.88 - --
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 4,610 4,882 4,181
01323500 Great Sacandaga Lake at Conklinville 32,800 37,350 31,920
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
April 30, 2009 97.76 April 30, 2008 100.38
Average (1939-2007) 98.31
Maximum daily 101.81 (1993) Minimum daily 94.11 (1965)
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.
