U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
JULY 2008
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR JULY 2008
Prepared August 1, 2008
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the deficient to excessive range during July. Streamflow at most
sites increased into the excessive range after being in the normal or deficient range last
month due to above normal precipitation. Streamflow at Wallkill River at Gardiner, Wappinger
Creek near Wappingers Falls, and Oquaga Creek at Deposit was in the normal range for the
month. Streamflow at Ramapo River at Ramapo was in the deficient range after being in the
normal range last month. All other sites were in the excessive range for the month.
The total New York City reservoir system was at 88.3 percent of capacity on July 31;
normal for this period is 90.3 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 excessive range during July. Streamflow at
Genesee River at Wellsville was in the normal range for the fifth consecutive month.
Streamflow at Unadilla River at Rockdale, Susquehanna River at Conklin, Chemung River at
Chemung, Chenango River near Chenango Forks, Allegheny River at Salamanca, Oatka Creek at
Garbutt, and Oneida Creek at Oneida was in the normal range after being in the deficient
range last month. Streamflow at Cattaraugus Creek at Gowanda, Tonawanda Creek at Batavia,
and Fall Creek near Ithaca was in the excessive range after being in the normal range last
month. Streamflow at Flint Creek at Phelps was in the excessive range after being in the
deficient range last 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 July 2008
MEAN FLOW FOR SELECTED GAGING STATIONS
Period
of record Flow Percent
Station (to date) (cfs) Exceedence Conditions
01306460 Connetquot Brook nr Central Islip 1978 20.9 59 Normal
01312000 Hudson River at Newcomb 1925-87,2002 624 1 Excessive
01318500 Hudson River at Hadley 1921 2,290 15 Excessive
01321000 Sacandaga River nr Hope 1911 746 18 Excessive
01334500 Hoosic River near Eagle Bridge 1910 903 11 Excessive
01349150 Canajoharie Creek near Canajoharie 1993 44.7 15 Excessive
01350000 Schoharie Creek at Prattsville 1902 339 13 Excessive
01357500 Mohawk River at Cohoes 1917 4,480 12 Excessive
01371500 Wallkill River at Gardiner 1924 158 74 Normal
01372500 Wappinger Cr nr Wappingers Falls 1928 75.0 48 Normal
01387400 Ramapo River at Ramapo 1979 21.6 92 Deficient
01413500 E Br Delaware River at Margaretville 1937 256 12 Excessive
01420500 Beaver Kill at Cooks Falls 1913 822 4 Excessive
01423000 W Br Delaware River at Walton 1950 573 8 Excessive
01426000 Oquaga Creek at Deposit **1941-73,2002 42.8 25 Normal
01502500 Unadilla River at Rockdale 1930-95,2001 304 32 Normal
01503000 Susquehanna River at Conklin 1912 1,500 36 Normal
01512500 Chenango River nr Chenango Forks 1912 835 40 Normal
01531000 Chemung River at Chemung 1903 619 57 Normal
03011020 Allegheny River at Salamanca 1903 1,360 31 Normal
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 515 16 Excessive
04217000 Tonawanda Creek at Batavia 1944 93.9 17 Excessive
04221000* Genesee River at Wellsville 1916 107 44 Normal
04230500 Oatka Creek at Garbutt 1945 62.3 43 Normal
04234000 Fall Creek at Ithaca 1925 109 19 Excessive
04235250 Flint Creek at Phelps 1960-95,2002 46.4 14 Excessive
04243500 Oneida Creek at Oneida 1950 64.9 39 Normal
04250750 Sandy Creek near Adams 1958-95,2002 108 16 Excessive
04256000 Independence River at Donnattsburg 1942 93.9 38 Normal
04262500 W Br Oswegatchie R nr Harrisville 1916 581 3 Excessive
04270200 Little Salmon River at Bombay 1958-95,2002 71.5 23 Excessive
04275500 Ausable River at Au Sable Forks 1910-68,1990 652 8 Excessive
** 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 July 2008
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 07/31 7.36 2 Excessive
Albany A-666 2008 07/09 5.51 - --
Allegany Ag-261 2002 07/31 5.34 - --
Allegany Ag-262 2002 07/31 -0.31 - --
Broome Bm-128 1980 07/31 27.15 89 Deficient
Broome Bm-129 1985 07/31 67.85 41 Normal
Cattaraugus Ct-121 1951 07/31 7.71 61 Normal
Cayuga Cy-7 1965 07/31 18.48 33 Normal
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-10 1939 07/31 9.52 1 Excessive
Chemung Cm-622 2002 07/31 24.35 50 Normal
Chenango Cn-12 1975 07/31 8.71 12 Excessive
Clinton Cl-145 1992 07/31 22.90 30 Normal
Clinton Cl-242 2006 07/09 3.03 - --
Columbia Cb-1071 2004 07/31 10.29 - --
Columbia Cb-1072 2006 07/08 9.05 - --
Cortland C-586 2008 -- -- - --
Cortland C-998 2002 07/31 5.30 - --
Delaware D-503 2002 07/31 5.57 - --
Dutchess Du-321 1948 07/31 68.38 34 Normal
Dutchess Du-1009 1967 07/31 16.51 80 Deficient
Erie E-1196 2004 07/31 13.03 - --
Essex Ex-150 2002 07/31 21.02 - --
Essex Ex-157 2006 -- -- - --
Franklin F-60 2005 07/31 3.93 - --
Franklin F-854 2005 07/31 32.23 - --
Fulton Fu-271 2002 07/31 14.72 - --
Genesee Gs-190 1998 07/31 28.83 43 Normal
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 07/31 13.50 53 Normal
Herkimer He-627 2004 07/09 27.59 - --
Jefferson J-176 2005 -- -- - --
Lewis L-174 2002 07/31 22.16 - --
Livingston Lv-330 2004 07/31 11.40 - --
Madison M-178 1975 07/31 9.95 96 Deficient
Monroe Mo-11 1984 07/31 8.22 64 Normal
Montgomery Mt-411 2004 07/07 33.91 - --
Niagara Ni-70 1973 07/31 4.74 9 Excessive
Niagara Ni-869 2003 07/15 1.95 - --
Oneida Oe-151 1926 07/31 22.70 59 Normal
Oneida Oe-1457 2003 07/31 42.00 - --
Oneida Oe-1466 2007 07/08 3.26 - --
Onondaga Od-1825 2004 -- -- - --
Onondaga Od-1833 2004 -- -- - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 07/31 3.06 - --
Orange O-2271 2002 07/31 6.83 - --
Orange O-2288 2007 07/22 6.15 - --
Orleans Ol-20 2004 07/31 19.83 - --
Oswego Ow-5013 2002 07/31 23.45 - --
Oswego Ow-5014 2002 07/31 23.54 - --
Otsego Og-23 1953 07/31 7.11 28 Normal
Putnam P-1205 2007 07/23 3.83 - --
Putnam P-1217 2005 07/31 14.00 - --
Rensselaer Re-703 1983 07/31 35.03 20 Excessive
Rockland Ro-18 1949 07/31 22.87 98 Deficient
Rockland Ro-543 2005 07/31 8.09 - --
St. Lawrence St-40 1953 07/31 5.64 9 Excessive
St. Lawrence St-404 1958 07/31 13.71 18 Excessive
Saratoga Sa-529 1949 -- -- - --
Saratoga Sa-1285 2002 07/31 0.96 - --
Schenectady Sn-730 2004 07/31 4.08 - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 07/31 8.67 - --
Seneca Se-532 2005 07/31 2.24 - --
Seneca Se-533 2005 07/31 2.09 - --
Steuben Sb-472 1965 07/31 9.59 42 Normal
Suffolk *S1810 1976 -- -- - --
Suffolk *S1812 1982 07/31 47.48 24 Excessive
Suffolk *S4271 1946 07/31 11.02 42 Normal
Suffolk *S5517 1948 07/31 41.68 81 Deficient
Suffolk *S8833 1951 07/31 15.10 85 Deficient
Sullivan Sv-535 2001 07/31 10.02 28 Normal
Tioga Ti-891 2003 07/31 20.39 - --
Tompkins Tm-985 2005 07/31 4.47 - --
Tompkins Tm-1968 2005 -- -- - --
Ulster U-1619 2002 07/31 16.70 39 Normal
Ulster U-1620 2005 07/21 28.68 - --
Warren Wr-80 2005 07/11 17.83 - --
Warren Wr-84 2008 -- -- - --
Washington W-533 1974 07/31 6.72 15 Excessive
Wayne Wn-592 2004 07/29 8.87 - --
Westchester We-5020 2003 07/31 12.72 - --
Wyoming Wo-4 1974 07/31 12.72 24 Excessive
Yates Ya-180 2004 07/30 4.14 - --
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 4,229 4,063 4,082
01323500 Great Sacandaga Lake at Conklinville 31,840 28,470 28,820
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
July 31, 2008 97.58 July 31, 2007 96.28
Average (1939-2006) 95.90
Maximum daily 99.38 (2006) Minimum daily 93.81 (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.
