U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
AUGUST 2006
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR AUGUST 2006
Prepared September 5, 2006
Troy--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report in
eastern New York were in the normal to excessive range during August. Hudson River near
Newcomb, Hudson River at Hadley, Sacandaga River near Hope, Hoosic River near Eagle Bridge,
Schoharie Creek at Prattsville, Mohawk River at Cohoes, East Branch Delaware River at
Margaretville, West Branch Delaware River at Walton, Oquaga Creek at Deposit, and Ausable
River at Au Sable Forks remained in the excessive range for the third consecutive month.
The total New York City reservoir system was at 90.4 percent of capacity on September 1;
normal for this period is 80.9 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 August. Streamflow at
Susquehanna River at Conklin, Unadilla River at Rockdale, Chenango River near Chenango
Forks, Chemung River at Chemung, Fall Creek near Ithaca, and Oneida Creek at Oneida
continued to be in the excessive range for the third consecutive month. Streamflow at
Allegheny River at Salamanca, Cattaraugus Creek at Gowanda, Tonawanda Creek at Batavia,
Genesee River at Wellsville, and Flint Creek at Phelps continued to be in the excessive
range for the second consecutive month.
Coram--Summary Report
Mean flow at Connetquot Brook near Central Islip was in the normal range for the sixth
consecutive month.
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Provisional Data for August 2006
MEAN FLOW FOR SELECTED GAGING STATIONS
Period
of record Flow Percent
Station (to date) (cfs) Exceedence Conditions
01306460 Connetquot Brook nr Central Islip 1978 22.6 51 Normal
01312000 Hudson River at Newcomb 1925-87,2002 299 15 Excessive
01318500 Hudson River at Hadley 1921 1,600 19 Excessive
01321000 Sacandaga River nr Hope 1911 333 24 Excessive
01334500 Hoosic River near Eagle Bridge 1910 426 22 Excessive
01349150 Canajoharie Creek near Canajoharie 1993 48.8 25 Normal
01350000 Schoharie Creek at Prattsville 1902 135 24 Excessive
01357500 Mohawk River at Cohoes 1917 2,950 11 Excessive
01371500 Wallkill River at Gardiner 1924 345 34 Normal
01372500 Wappinger Cr nr Wappingers Falls 1928 74.5 29 Normal
01387400 Ramapo River at Ramapo 1979 48.6 35 Normal
01413500 E Br Delaware River at Margaretville 1937 178 10 Excessive
01420500 Beaver Kill at Cooks Falls 1913 214 34 Normal
01423000 W Br Delaware River at Walton 1950 370 10 Excessive
01426000 Oquaga Creek at Deposit **1941-73,2002 150 3 Excessive
01502500 Unadilla River at Rockdale 1930-95,2001 812 4 Excessive
01503000 Susquehanna River at Conklin 1912 2,600 4 Excessive
01512500 Chenango River nr Chenango Forks 1912 2,100 5 Excessive
01531000 Chemung River at Chemung 1903 1,510 11 Excessive
03011020 Allegheny River at Salamanca 1903 1,150 14 Excessive
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 391 13 Excessive
04217000 Tonawanda Creek at Batavia 1944 72.3 17 Excessive
04221000* Genesee River at Wellsville 1916 153 19 Excessive
04230500 Oatka Creek at Garbutt 1945 63.9 27 Normal
04234000 Fall Creek at Ithaca 1925 142 4 Excessive
04235250 Flint Creek at Phelps 1960-95,2002 15.6 22 Excessive
04243500 Oneida Creek at Oneida 1950 104 8 Excessive
04250750 Sandy Creek near Adams 1958-95,2002 24.5 50 Normal
04256000 Independence River at Donnattsburg 1942 51.7 66 Normal
04262500 W Br Oswegatchie R nr Harrisville 1916 121 61 Normal
04270200 Little Salmon River at Bombay 1958-95,2002 61.6 24 Excessive
04275500 Ausable River at Au Sable Forks 1910-68,1990 544 6 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 August 2006
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 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.
Record Percent
County Well No. begins Date Water Level Exceedence Conditions
Albany A-654 2002 08/25 7.34 0 Excessive
Allegany Ag-261 2002 08/22 5.46 - --
Allegany Ag-262 2002 08/21 -0.16 - --
Broome Bm-128 1980 08/31 22.93 5 Excessive
Broome Bm-129 1985 08/31 68.03 36 Normal
Cattaraugus Ct-121 1951 08/31 8.38 58 Normal
Cayuga Cy-223 2005 08/30 15.42 - --
Chautauqua Cu-10 1939 08/31 34.62 61 Normal
Chemung Cm-622 2002 08/31 21.93 1 Excessive
Chenango Cn-12 1975 08/28 8.51 4 Excessive
Clinton Cl-145 1992 08/31 23.05 30 Normal
Clinton Cl-242 2006 -- -- - --
Columbia Cb-1071 2004 -- -- - --
Columbia Cb-1072 2006 -- -- - --
Cortland C-998 2002 08/28 5.14 - --
Delaware D-503 2002 08/31 5.82 - --
Dutchess Du-321 1948 08/31 68.62 31 Normal
Dutchess Du-1009 1967 08/31 16.48 52 Normal
Erie E-1196 2004 08/31 13.38 - --
Essex Ex-150 2002 08/31 21.68 - --
Franklin F-60 2005 08/31 4.54 - --
Franklin F-854 2005 08/31 32.32 - --
Fulton Fu-271 2002 08/23 14.06 - --
Genesee Gs-190 2002 08/30 33.07 - --
Greene G-644 2003 08/10 12.31 - --
Greene G-831 2006 08/09 7.67 - --
Hamilton H-3 1966 08/31 13.39 22 Excessive
Herkimer He-627 2004 08/21 32.27 - --
Jefferson J-176 2005 08/23 5.38 - --
Lewis L-174 2002 08/31 23.73 - --
Livingston Lv-330 2004 08/29 11.76 - --
Madison M-178 1975 08/31 8.84 26 Normal
Monroe Mo-11 1984 08/30 7.97 7 Excessive
Montgomery Mt-411 2004 08/22 33.10 - --
Niagara Ni-70 1973 08/31 6.79 45 Normal
Niagara Ni-869 2003 08/31 2.57 - --
Oneida Oe-151 1926 08/31 21.77 7 Excessive
Oneida Oe-1457 2003 08/31 43.12 - --
Onondaga Od-1825 2004 08/29 12.76 - --
Onondaga Od-1833 2004 08/29 14.22 - --
Ontario **Ot-900 1955 08/30 6.71 62 Normal
Ontario Ot-1133 2002 08/30 3.45 - --
Orange O-2271 2002 08/31 6.42 - --
Orleans Ol-20 2004 08/31 21.82 - --
Oswego Ow-5013 2002 08/31 23.09 - --
Oswego Ow-5014 2002 08/31 23.58 - --
Otsego Og-23 1953 08/28 6.41 8 Excessive
Putnam P-1217 2005 08/31 14.27 - --
Rensselaer Re-703 1983 08/31 35.08 8 Excessive
Rockland Ro-18 1949 08/31 22.83 86 Deficient
Rockland Ro-543 2005 08/31 7.00 - --
St. Lawrence St-40 1953 08/31 7.92 74 Normal
St. Lawrence St-404 1958 -- -- - --
Saratoga Sa-1285 2002 08/22 1.25 - --
Schenectady Sn-730 2004 -- -- - --
Schoharie So-602 2005 08/08 24.56 - --
Schoharie So-604 2006 08/08 9.37 - --
Schuyler Sy-706 2003 08/29 6.99 - --
Seneca Se-532 2005 08/30 0.39 - --
Seneca Se-533 2005 08/30 0.36 - --
Steuben Sb-472 1965 08/24 9.20 12 Excessive
Suffolk *S1810 1976 08/24 52.57 30 Normal
Suffolk *S1812 1982 08/16 48.73 6 Excessive
Suffolk *S4271 1946 08/15 13.25 3 Excessive
Suffolk *S5517 1948 -- -- - --
Suffolk *S8833 1951 08/31 18.49 5 Excessive
Sullivan Sv-535 2001 08/31 9.13 - --
Tioga Ti-891 2003 08/29 15.94 - --
Tompkins Tm-985 2005 08/29 3.45 - --
Tompkins Tm-1968 2005 08/29 16.41 - --
Ulster U-1619 2002 08/31 16.77 28 Normal
Ulster U-1620 2005 08/28 30.02 - --
Warren Wr-80 2005 08/30 18.00 - --
Washington W-533 1974 08/04 6.79 11 Excessive
Wayne Wn-592 2004 08/30 9.00 - --
Westchester We-5020 2003 08/31 13.90 - --
Wyoming Wo-4 1974 08/31 12.74 12 Excessive
Yates Ya-180 2004 08/29 3.08 - --
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 3,804 3,941 3,408
01323500 Great Sacandaga Lake at Conklinville 29,180 27,180 25,020
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
August 31, 2006 96.68 August 31, 2005 95.58
Average (1939-2004) 95.27
Maximum daily 98.31 (1976) Minimum daily 93.39 (1949)
Provisional Data for August 2006#
INDEX STREAMFLOW STATIONS
(Reference period 1971-2000)
## Reference period is 1978-2000
** Excessive
* Deficient
# Note: Flow statistics based on data collected through August 31, 2006.
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.
Statistics for the "Index Streamflow Stations" table are for the 30-year reference period
1971-2000. All other statistics used in report are based on the period of record at the site.
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.
