U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
JULY 2007
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR JULY 2007
Prepared August 1, 2007
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the excessive to deficient range during July. Streamflow at Sacandaga
River at Hope was in the deficient range for the second consecutive month. Streamflow at Ramapo
River at Ramapo decreased into the deficient range after being in the normal range last month.
Streamflow at Little Salmon River at Bombay and Ausable River at Au Sable Forks in the northern
part of the state increased into the excessive range after being in the deficient range last
month. All other sites were in the normal range for the month.
The total New York City reservoir system was at 85.0 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 deficient range during July. Streamflow at
Susquehanna River at Conklin, Chenango River near Chenango Forks, Chemung River at Chemung,
Cattaraugus Creek at Gowanda, Tonawanda Creek at Batavia, Oatka Creek at Garbutt, Fall
Creek near Ithaca, Flint Creek at Phelps, and Oneida Creek at Oneida was in the normal range
after being in the deficient range last month. Streamflow at Unadilla River at Rockdale was
in the normal range for the second consecutive month. Streamflow at Allegheny River at
Salamanca and Genesee River at Wellsville was in the deficient range for the second
consecutive 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 July 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 22.7 50 Normal
01312000 Hudson River at Newcomb 1925-87,2002 183 43 Normal
01318500 Hudson River at Hadley 1921 893 72 Normal
01321000 Sacandaga River nr Hope 1911 105 93 Deficient
01334500 Hoosic River near Eagle Bridge 1910 427 35 Normal
01349150 Canajoharie Creek near Canajoharie 1993 5.61 62 Normal
01350000 Schoharie Creek at Prattsville 1902 124 38 Normal
01357500 Mohawk River at Cohoes 1917 1,730 61 Normal
01371500 Wallkill River at Gardiner 1924 267 58 Normal
01372500 Wappinger Cr nr Wappingers Falls 1928 80.8 45 Normal
01387400 Ramapo River at Ramapo 1979 25.0 78 Deficient
01413500 E Br Delaware River at Margaretville 1937 89.4 51 Normal
01420500 Beaver Kill at Cooks Falls 1913 161 64 Normal
01423000 W Br Delaware River at Walton 1950 146 50 Normal
01426000 Oquaga Creek at Deposit **1941-73,2002 19.0 57 Normal
01502500 Unadilla River at Rockdale 1930-95,2001 181 63 Normal
01503000 Susquehanna River at Conklin 1912 740 64 Normal
01512500 Chenango River nr Chenango Forks 1912 512 65 Normal
01531000 Chemung River at Chemung 1903 353 74 Normal
03011020 Allegheny River at Salamanca 1903 319 90 Deficient
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 163 74 Normal
04217000 Tonawanda Creek at Batavia 1944 36.8 49 Normal
04221000* Genesee River at Wellsville 1916 46.3 84 Deficient
04230500 Oatka Creek at Garbutt 1945 46.4 74 Normal
04234000 Fall Creek at Ithaca 1925 51.4 49 Normal
04235250 Flint Creek at Phelps 1960-95,2002 7.96 71 Normal
04243500 Oneida Creek at Oneida 1950 49.0 58 Normal
04250750 Sandy Creek near Adams 1958-95,2002 38.0 44 Normal
04256000 Independence River at Donnattsburg 1942 65.2 62 Normal
04262500 W Br Oswegatchie R nr Harrisville 1916 184 50 Normal
04270200 Little Salmon River at Bombay 1958-95,2002 83.6 20 Excessive
04275500 Ausable River at Au Sable Forks 1910-68,1990 495 18 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 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 07/31 8.03 4 Excessive
Allegany Ag-261 2002 07/31 5.99 - --
Allegany Ag-262 2002 07/31 0.42 - --
Broome Bm-128 1980 07/31 25.68 49 Normal
Broome Bm-129 1985 07/31 68.58 60 Normal
Cattaraugus Ct-121 1951 07/31 9.60 92 Deficient
Cayuga Cy-7 1965 -- -- - --
Cayuga Cy-223 2005 -- -- - --
Chautauqua Cu-10 1939 07/31 25.70 35 Normal
Chemung Cm-622 2002 07/31 24.70 70 Normal
Chenango Cn-12 1975 07/31 8.69 8 Excessive
Clinton Cl-145 1992 07/31 22.87 34 Normal
Clinton Cl-242 2006 08/01 1.86 - --
Columbia Cb-1071 2004 -- -- - --
Columbia Cb-1072 2006 -- -- - --
Cortland C-998 2002 07/31 5.59 - --
Delaware D-503 2002 07/31 6.91 - --
Dutchess Du-321 1948 07/31 68.40 32 Normal
Dutchess Du-1009 1967 07/31 17.09 88 Deficient
Erie E-1196 2004 07/31 13.30 - --
Essex Ex-150 2002 07/31 24.47 - --
Essex Ex-157 2006 07/30 18.91 - --
Franklin F-60 2005 07/31 3.61 - --
Franklin F-854 2005 07/31 29.88 - --
Fulton Fu-271 2002 07/31 14.61 - --
Genesee Gs-190 1998 07/31 27.43 42 Normal
Greene G-644 2003 -- -- - --
Greene G-831 2006 -- -- - --
Hamilton H-3 1966 07/31 14.43 87 Deficient
Herkimer He-627 2004 -- -- - --
Jefferson J-176 2005 07/18 4.08 - --
Lewis L-174 2002 07/31 22.64 - --
Livingston Lv-330 2004 -- -- - --
Madison M-178 1975 07/31 9.48 75 Normal
Monroe Mo-11 1984 07/31 7.68 0 Excessive
Montgomery Mt-411 2004 08/01 34.42 - --
Niagara Ni-70 1973 07/31 7.19 80 Deficient
Niagara Ni-869 2003 07/31 4.96 - --
Oneida Oe-151 1926 07/31 25.38 97 Deficient
Oneida Oe-1457 2003 07/31 41.43 - --
Onondaga Od-1825 2004 -- -- - --
Onondaga Od-1833 2004 -- -- - --
Ontario **Ot-900 1955 -- -- - --
Ontario Ot-1133 2002 07/31 3.85 - --
Orange O-2271 2002 07/31 6.67 - --
Orange O-2288 2007 -- -- - --
Orleans Ol-20 2004 07/31 19.86 - --
Oswego Ow-5013 2002 07/31 23.64 - --
Oswego Ow-5014 2002 07/31 23.78 - --
Otsego Og-23 1953 07/31 8.38 61 Normal
Putnam P-1205 2007 -- -- - --
Putnam P-1217 2005 07/31 15.16 - --
Rensselaer Re-703 1983 07/31 36.01 25 Normal
Rockland Ro-18 1949 07/31 23.50 100 Deficient
Rockland Ro-543 2005 07/31 8.42 - --
St. Lawrence St-40 1953 07/31 6.02 20 Excessive
St. Lawrence St-404 1958 07/31 14.83 48 Normal
Saratoga Sa-529 1949 07/31 41.38 0 Excessive
Saratoga Sa-1285 2002 07/28 3.84 - --
Schenectady Sn-730 2004 -- -- - --
Schoharie So-602 2005 -- -- - --
Schoharie So-604 2006 -- -- - --
Schuyler Sy-706 2003 07/31 9.28 - --
Seneca Se-532 2005 07/31 3.10 - --
Seneca Se-533 2005 07/31 3.03 - --
Steuben Sb-472 1965 07/31 10.00 67 Normal
Suffolk *S1810 1976 07/20 52.63 30 Normal
Suffolk *S1812 1982 -- -- - --
Suffolk *S4271 1946 07/31 12.78 7 Excessive
Suffolk *S5517 1948 07/31 44.66 27 Normal
Suffolk *S8833 1951 07/31 18.34 4 Excessive
Sullivan Sv-535 2001 07/31 8.67 4 Excessive
Tioga Ti-891 2003 07/31 20.63 - --
Tompkins Tm-985 2005 07/31 4.04 - --
Tompkins Tm-1968 2005 07/31 18.58 - --
Ulster U-1619 2002 07/31 17.00 49 Normal
Ulster U-1620 2005 -- -- - --
Warren Wr-80 2005 -- -- - --
Washington W-533 1974 07/31 7.33 76 Deficient
Wayne Wn-592 2004 -- -- - --
Westchester We-5020 2003 07/31 14.33 - --
Wyoming Wo-4 1974 07/31 13.45 90 Deficient
Yates Ya-180 2004 07/31 5.20 - --
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 4,063 4,130 4,082
01323500 Great Sacandaga Lake at Conklinville 28,470 34,060 28,830
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
July 31, 2007 96.28 July 31, 2006 97.99
Average (1939-2005) 95.87
Maximum daily 99.34 (1973) 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.
