U.S. GEOLOGICAL SURVEY
WATER-RESOURCES CONDITIONS IN NEW YORK
APRIL 2005
U.S. GEOLOGICAL SURVEY, WRD
New York District, Troy, NY
WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT
FOR APRIL 2005
Prepared May 2, 2005
Troy Subdistrict--Summary Report
Provisional streamflow conditions at sites monitored and included in this report in
eastern New York were in the normal to excessive range. A storm April 2-4 caused severe
flooding and damages and President Bush declared 13 counties eligible for federal
disaster assistance. Those counties eligible in eastern New York are Delaware, Greene,
Montgomery, Orange, Rensselaer, Schenectady, Schoharie, Sullivan, and Ulster. Five sites
exceeded their 100-year flood discharge from this early April storm: Beaver Kill at
Cooks Falls, and 4 sites not included in this report, Esopus Creek at Mount Marion,
East Branch Delaware River above Read Creek at Fishs Eddy, Neversink River at Bridgeville,
and Neversink River at Godeffroy. New York city reservoirs were full or near full at the
end of March, just prior to the early April storm.
The total New York City reservoir system was at 99.8 percent of capacity on April 29;
normal for this period is 99.7 percent of capacity.
Ithaca Subdistrict--Summary Report
Provisional streamflow conditions at all sites monitored and included in this report
for western New York increased from the previous month. Streamflow at most sites was in
the excessive range for April except for Allegheny River at Salamanca and Genesee River
at Wellsville, which were in the normal range. Two sites not included in this report
(Otselic River at Cincinnatus and Owasco Lake outlet at Auburn) recorded peak discharges
in early April that exceeded 100-year recurrence intervals.
Coram Subdistrict--Summary Report
Mean flow at Connetquot Brook near Central Islip was in the normal range for the
second consecutive month.
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Provisional Data for April 2005
MEAN FLOW FOR SELECTED GAGING STATIONS
Period
of record Flow Percent
Station (to date) (cfs) Exceedence Conditions
01306460 Connetquot Brook nr Central Islip 1978 34.7 46 Normal
01312000 Hudson River at Newcomb 1925-87,2002 1,690 12 Excessive
01318500 Hudson River at Hadley 1921 10,700 17 Excessive
01321000 Sacandaga River nr Hope 1911 4,120 31 Normal
01334500 Hoosic River near Eagle Bridge 1910 2,370 42 "
01349150 Canajoharie Creek near Canajoharie 1993 211 54 Normal
01350000 Schoharie Creek at Prattsville 1902 2,280 5 Excessive
01357500 Mohawk River at Cohoes 1917 17,500 21 "
01371500 Wallkill River at Gardiner 1924 3,500 7 Excessive
01372500 Wappinger Cr nr Wappingers Falls 1928 636 27 Normal
01387400 Ramapo River at Ramapo 1979 521 20 Excessive
01413500 E Br Delaware River at Margaretville 1937 968 17 "
01420500 Beaver Kill at Cooks Falls 1913 2,330 4 "
01423000 W Br Delaware River at Walton 1950 1,810 16 "
01426000 Oquaga Creek at Deposit **1941-73,2002 531 4 "
01502500 Unadilla River at Rockdale 1930-95,2001 2,740 20 "
01503000 Susquehanna River at Conklin 1912 11,600 17 "
01512500 Chenango River nr Chenango Forks 1912 9,110 10 "
01531000 Chemung River at Chemung 1903 9,260 13 Excessive
03011020 Allegheny River at Salamanca 1903 5,690 46 Normal
04213500 Cattaraugus Creek at Gowanda 1940-98,2000 1,850 15 Excessive
04217000 Tonawanda Creek at Batavia 1944 686 11 Excessive
04221000* Genesee River at Wellsville 1916 933 32 Normal
04230500 Oatka Creek at Garbutt 1945 752 10 Excessive
04234000 Fall Creek at Ithaca 1925 699 7 "
04235250 Flint Creek at Phelps 1960-95,2002 400 3 "
04243500 Oneida Creek at Oneida 1950 440 22 Excessive
04250750 Sandy Creek near Adams 1958-95,2002 561 57 Normal
04256000 Independence River at Donnattsburg 1942 495 49 "
04262500 W Br Oswegatchie R nr Harrisville 1916 1,180 62 "
04270200 Little Salmon River at Bombay 1958-95,2002 325 37 Normal
04275500 Ausable River at Au Sable Forks 1910-68,1990 2,720 12 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 April 2005
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 04/26 5.79 5 Excessive
Allegany Ag-261 2002 04/28 5.04 - --
Allegany Ag-262 2002 04/28 -0.73 - --
Broome Bm-128 1980 04/30 22.06 47 Normal
Broome Bm-129 1985 04/30 66.61 0 Excessive
Cattaraugus Ct-121 1951 04/30 4.62 50 Normal
Cayuga Cy-223 2005 04/26 13.49 - --
Chautauqua Cu-10 1939 04/30 17.88 43 Normal
Chemung Cm-622 2002 04/30 22.71 35 "
Chenango Cn-12 1975 04/25 8.57 61 "
Clinton Cl-145 1992 04/30 22.17 51 Normal
Columbia Cb-1071 2004 04/22 10.20 - --
Cortland C-998 2002 04/26 4.30 - --
Delaware D-503 2002 04/30 4.38 - --
Dutchess Du-321 1948 04/30 66.94 12 Excessive
Dutchess Du-1009 1967 04/30 14.60 94 Deficient
Erie E-1196 2004 04/30 11.17 - --
Essex Ex-150 2002 04/30 14.74 - --
Franklin F-60 2005 04/30 2.09 - --
Franklin F-854 2005 04/30 114.83 - --
Fulton Fu-271 2002 04/28 13.97 - --
Genesee Gs-190 2002 04/26 19.97 - --
Greene G-644 2003 04/28 19.83 - --
Hamilton H-3 1966 04/30 10.78 25 Normal
Herkimer He-627 2004 04/28 28.89 - --
Lewis L-174 2002 04/27 22.70 - --
Livingston Lv-330 2004 04/26 6.52 - --
Madison M-178 1975 04/30 6.84 66 Normal
Monroe Mo-11 1984 04/26 7.18 0 Excessive
Montgomery Mt-411 2004 04/26 32.17 - --
Niagara Ni-70 1973 04/30 2.51 64 Normal
Niagara Ni-869 2003 04/30 0.07 - --
Oneida Oe-151 1926 04/30 19.76 69 Normal
Oneida Oe-1457 2003 04/30 42.11 - --
Onondaga Od-1825 2004 04/26 10.38 - --
Onondaga Od-1833 2004 04/26 12.08 - --
Ontario **Ot-900 1955 04/26 9.48 43 Normal
Ontario Ot-1133 2002 04/26 2.40 - --
Orange O-2271 2002 04/30 6.13 - --
Orleans Ol-20 2004 04/30 15.65 - --
Oswego Ow-5013 2002 04/30 22.04 - --
Oswego Ow-5014 2002 04/30 22.49 - --
Otsego Og-23 1953 04/25 5.13 52 Normal
Putnam P-1217 2005 04/14 12.75 - --
Rensselaer Re-703 1983 04/27 34.85 1 Excessive
Rockland Ro-18 1949 04/30 16.34 87 Deficient
St. Lawrence St-40 1953 04/21 5.11 52 Normal
St. Lawrence St-404 1958 04/13 13.77 100 Deficient
Saratoga Sa-1285 2002 04/26 0.69 - --
Schenectady Sn-730 2004 04/26 4.72 - --
Schoharie So-602 2005 04/26 22.81 - --
Schuyler Sy-706 2003 04/26 5.42 - --
Seneca Se-532 2005 04/26 0.29 - --
Se-533 2005 04/26 -0.55 - --
Steuben Sb-472 1965 04/28 7.01 62 Normal
Suffolk *S1810 1976 04/18 51.41 37 "
Suffolk *S1812 1982 04/18 47.45 31 Normal
Suffolk *S4271 1946 04/26 11.90 23 Excessive
Suffolk *S5517 1948 04/06 42.27 49 Normal
Suffolk *S8833 1951 04/30 18.18 11 Excessive
Sullivan Sv-535 2001 04/14 6.59 - --
Tioga Ti-891 2003 04/28 16.97 - --
Tompkins Tm-984 2003 04/27 10.72 - --
Tm-985 2005 04/26 2.72 - --
Tm-1968 2005 04/27 12.99 - --
Ulster U-1619 2002 04/30 14.80 0 Excessive
U-1620 2005 04/14 26.98 - --
Warren Wr-80 2005 04/28 14.18 - --
Washington W-533 1974 04/28 6.05 71 Normal
Wayne Wn-592 2004 04/26 8.41 - --
Westchester We-5020 2003 04/14 7.61 - --
Wyoming Wo-4 1974 04/30 11.28 47 Normal
Yates Ya-180 2004 04/26 3.62 - --
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 4,800 4,415 4,159
01323500 Great Sacandaga Lake at Conklinville 35,910 30,210 31,640
04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft
above sea level
April 30, 2005 99.34 April 30, 2004 98.11
Average (1939-2003) 98.28
Maximum daily 101.81 (1993) Minimum daily 94.11 (1965)
Provisional Data for April 2005#
INDEX STREAMFLOW STATIONS
(Reference period 1971-2000)
## Reference period is 1978-2000
** Excessive @ April 19-22
# Note: Flow statistics based on data collected through March 31, 2005.
NOTES, DEFINITIONS, ETC.
Percent exceedence is, for example, the percentage of November monthly mean discharges for
period of record equal to or greater than the current November 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.
