U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
MAY 2007
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR MAY 2007
Prepared June 1, 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 during May. Streamflow at Wallkill
River at Gardiner, Beaver Kill at Cooks Falls, Oquaga Creek at Deposit, and Independence
River at Donnattsburg decreased into the deficient range after being in the excessive or
normal range last month. Streamflow at the remaining sites was in the normal range, but
also decreased from last month. Streamflow at these sites decreased from the excessive
range or remained in the normal range from last month.
The total New York City reservoir system was at 96.8 percent of capacity on May 31;
normal for this period is 100.0 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 May. Streamflow
at Susquehanna River at Conklin and Oneida Creek at Oneida was in the normal range after
being in the excessive range last month. Streamflow at Unadilla River at Rockdale, Chenango
River near Chenango Forks, Cattaraugus Creek at Gowanda, and Tonawanda Creek at Batavia was
in the deficient range after being in the normal range last month. Streamflow at Chemung
River at Chemung, Allegheny River at Salamanca, Oatka Creek at Garbutt, Fall Creek near
Ithaca, and Flint Creek at Phelps was in the normal range for the second consecutive month.
Streamflow at Genesee River at Wellsville was in the normal range after being in the
deficient range last month.
Coram--Summary Report
Provisional streamflow at Connetquot Brook near Central Islip was in the excessive range
for the eighth consecutive month.
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Provisional Data for May 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 45.4 0 Excessive
01312000 Hudson River at Newcomb 1925-87,2002 911 41 Normal
01318500 Hudson River at Hadley 1921 4,510 59 Normal
01321000 Sacandaga River nr Hope 1911 1,290 68 Normal
01334500 Hoosic River near Eagle Bridge 1910 1,210 45 Normal
01349150 Canajoharie Creek near Canajoharie 1993 62.8 47 Normal
01350000 Schoharie Creek at Prattsville 1902 452 60 Normal
01357500 Mohawk River at Cohoes 1917 5,260 60 Normal
01371500 Wallkill River at Gardiner 1924 556 82 Deficient
01372500 Wappinger Cr nr Wappingers Falls 1928 180 71 Normal
01387400 Ramapo River at Ramapo 1979 109 73 Normal
01413500 E Br Delaware River at Margaretville 1937 254 72 Normal
01420500 Beaver Kill at Cooks Falls 1913 380 79 Deficient
01423000 W Br Delaware River at Walton 1950 431 66 Normal
01426000 Oquaga Creek at Deposit **1941-73,2002 39.5 96 Deficient
01502500 Unadilla River at Rockdale 1930-95,2001 558 78 Deficient
01503000 Susquehanna River at Conklin 1912 3,300 61 Normal
01512500 Chenango River nr Chenango Forks 1912 1,630 77 Deficient
01531000 Chemung River at Chemung 1903 1,870 74 Normal
03011020 Allegheny River at Salamanca 1903 2,080 73 Normal
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 411 79 Deficient
04217000 Tonawanda Creek at Batavia 1944 112 78 Deficient
04221000* Genesee River at Wellsville 1916 285 66 Normal
04230500 Oatka Creek at Garbutt 1945 168 69 Normal
04234000 Fall Creek at Ithaca 1925 123 75 Normal
04235250 Flint Creek at Phelps 1960-95,2002 66.0 72 Normal
04243500 Oneida Creek at Oneida 1950 110 70 Normal
04250750 Sandy Creek near Adams 1958-95,2002 160 65 Normal
04256000 Independence River at Donnattsburg 1942 138 91 Deficient
04262500 W Br Oswegatchie R nr Harrisville 1916 463 75 Normal
04270200 Little Salmon River at Bombay 1958-95,2002 110 58 Normal
04275500 Ausable River at Au Sable Forks 1910-68,1990 1,550 29 Normal
** 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 May 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 05/31 6.35 0 Excessive
Allegany Ag-261 2002 05/31 6.50 - --
Allegany Ag-262 2002 05/31 -0.27 - --
Broome Bm-128 1980 05/31 23.62 77 Deficient
Broome Bm-129 1985 05/31 67.20 74 Normal
Cattaraugus Ct-121 1951 05/31 6.73 90 Deficient
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-10 1939 05/31 19.33 46 Normal
Chemung Cm-622 2002 05/31 23.88 80 Deficient
Chenango Cn-12 1975 05/31 8.91 50 Normal
Clinton Cl-145 1992 05/31 22.43 29 Normal
Clinton Cl-242 2006 -- -- - --
Columbia Cb-1071 2004 05/31 10.59 - --
Columbia Cb-1072 2006 05/31 7.60 - --
Cortland C-998 2002 05/31 5.13 - --
Delaware D-503 2002 05/31 5.81 - --
Dutchess Du-321 1948 05/31 66.99 21 Excessive
Dutchess Du-1009 1967 05/31 15.09 86 Deficient
Erie E-1196 2004 05/31 12.22 - --
Essex Ex-150 2002 05/31 17.32 - --
Essex Ex-157 2006 -- -- - --
Franklin F-60 2005 05/31 4.09 - --
Franklin F-854 2005 05/31 30.13 - --
Fulton Fu-271 2002 05/31 13.61 - --
Genesee Gs-190 2002 05/31 22.33 - --
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 05/31 12.70 88 Deficient
Herkimer He-627 2004 05/24 26.31 - --
Jefferson J-176 2005 -- -- - --
Lewis L-174 2002 05/31 21.66 - --
Livingston Lv-330 2004 -- -- - --
Madison M-178 1975 05/31 8.41 82 Deficient
Monroe Mo-11 1984 05/31 7.40 36 Normal
Montgomery Mt-411 2004 05/23 32.47 - --
Niagara Ni-70 1973 05/31 4.67 91 Deficient
Niagara Ni-869 2003 05/31 1.92 - --
Oneida Oe-151 1926 05/31 20.07 85 Deficient
Oneida Oe-1457 2003 05/31 40.27 - --
Onondaga Od-1825 2004 -- -- - --
Onondaga Od-1833 2004 -- -- - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 05/31 2.97 - --
Orange O-2271 2002 05/31 6.84 - --
Orange O-2288 2007 05/03 2.55 - --
Orleans Ol-20 2004 05/31 16.66 - --
Oswego Ow-5013 2002 05/31 22.81 - --
Oswego Ow-5014 2002 05/31 23.09 - --
Otsego Og-23 1953 05/31 6.93 83 Deficient
Putnam P-1217 2005 05/31 14.39 - --
Rensselaer Re-703 1983 05/31 35.01 15 Excessive
Rockland Ro-18 1949 05/31 17.69 93 Deficient
Rockland Ro-543 2005 05/31 7.45 - --
St. Lawrence St-40 1953 05/31 5.15 41 Normal
St. Lawrence St-404 1958 05/31 13.88 99 Deficient
Saratoga Sa-529 1949 05/31 40.46 0 Excessive
Saratoga Sa-1285 2002 05/31 2.46 - --
Schenectady Sn-730 2004 05/29 5.74 - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 -- -- - --
Seneca Se-532 2005 05/31 1.73 - --
Seneca Se-533 2005 05/31 1.35 - --
Steuben Sb-472 1965 05/31 8.97 83 Deficient
Suffolk *S1810 1976 05/31 53.13 26 Normal
Suffolk *S1812 1982 05/24 51.16 0 Excessive
Suffolk *S4271 1946 05/31 13.11 1 Excessive
Suffolk *S5517 1948 05/31 45.78 1 Excessive
Suffolk *S8833 1951 05/31 18.99 3 Excessive
Sullivan Sv-535 2001 05/31 9.85 53 Normal
Tioga Ti-891 2003 -- -- - --
Tompkins Tm-985 2005 05/31 4.52 - --
Tompkins Tm-1968 2005 05/31 15.82 - --
Ulster U-1619 2002 05/31 15.40 12 Excessive
Ulster U-1620 2005 05/04 28.73 - --
Warren Wr-80 2005 05/30 15.38 - --
Washington W-533 1974 05/31 6.35 52 Normal
Wayne Wn-592 2004 -- -- - --
Westchester We-5020 2003 05/31 11.37 - --
Wyoming Wo-4 1974 05/31 12.49 78 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 4,452 4,614 4,596
01323500 Great Sacandaga Lake at Conklinville 33,910 36,120 33,650
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
May 31, 2007 98.07 May 31, 2006 98.82
Average (1939-2005) 98.30
Maximum daily 101.55 (1993) Minimum daily 94.91 (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.
