U.S. GEOLOGICAL SURVEY, WRD New York District, Troy, NY WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT FOR FEBRUARY 2002 Prepared March 4, 2002 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 except at Wallkill River at Gardiner and Wappinger Creek near Wappingers Falls. Conditions at these 2 sites were in the deficient range for the seventh consecutive month at Gardiner and the fifth consecutive month at Wappingers Falls. Also, the lowest provisional period-of-record minimum monthly mean discharge for February was recorded at these 2 sites. Adjustments were made to flows at some sites due to ice affect. The total New York City reservoir system was at 48.5 percent of capacity on February 28; normal for this period is 83.4 percent of capacity. Ithaca Subdistrict--Summary Report Provisional streamflow conditions at sites monitored and included in this report for western New York were in the normal range at Chemung River at Chemung and Genesee River at Wellsville. Susquehanna River at Conklin increased to the excessive range after being deficient the previous four months and Unadilla River at Rockdale also increased to the excessive range after being deficient the previous five months. Monitored sites at Chenango Forks, Salamanca, Gowanda, Batavia, Garbutt, Ithaca, and Oneida were in the excessive range. Minor ice adjustments were made at some sites. Coram Subdistrict--Summary Report Mean flow at Connetquot Brook near Central Islip was in the deficient range for the fourth consecutive month. The lowest provisional period-of-record minimum monthly mean discharge for February was recorded at this site. ___________________________________________________________________________________________
___________________________________________________________________________________________ Provisional Data for February 2002 MEAN FLOW FOR SELECTED GAGING STATIONS Period of record Flow Percent Station (to date) (cfs) Exceedence Conditions 01306460 Connetquot Brook nr Central Islip 1978 15 100 Deficient 01318500 Hudson River at Hadley 1921 e1,900 40 Normal 01321000 Sacandaga River nr Hope 1911 e1,200 11 Excessive 01350000 Schoharie Creek at Prattsville 1902 422 46 Normal 01357500 Mohawk River at Cohoes 1917 6,690 29 " 01371500 Wallkill River at Gardiner 1924 216 100 Deficient 01372500 Wappinger Cr nr Wappingers Falls 1928 57 100 " 01413500 E Br Delaware River at Margaretville 1937 380 34 Normal 01420500 Beaver Kill at Cooks Falls 1913 631 29 " 01423000 W Br Delaware River at Walton 1950 916 24 Excessive 01502500 Unadilla River at Rockdale 1930-95,2001 1,500 17 " 01503000 Susquehanna River at Conklin 1912 5,660 19 " 01512500 Chenango River nr Chenango Forks 1912 4,680 10 " 01531000 Chemung River at Chemung 1903 3,120 36 Normal 03011020 Allegheny River at Salamanca 1903 4,660 21 Excessive 04213500 Cattaraugus Creek at Gowanda 1940-98,2000 1,480 12 " 04217000 Tonawanda Creek at Batavia 1944 610 5 " 04221000 Genesee River at Wellsville 1916 565 25 Normal 04230500 Oatka Creek at Garbutt 1945 489 8 Excessive 04234000 Fall Creek at Ithaca 1925 307 20 " 04243500 Oneida Creek at Oneida 1950 313 17 " 04256000 Independence River at Donnattsburg 1942 e210 19 " 04262500 W Br Oswegatchie R nr Harrisville 1916 e650 15 " 04275500 Ausable River at Au Sable Forks 1910-68,1990 e630 10 Excessive e Estimated. MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for February 2002 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 N1259, N1616, Q1249, Sa-1100, S1806, and 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. Period of record Percent County Well No. (to date) Date Water Level Exceedence Conditions Albany A-636 1974 2/27 12.28 98 Deficient Broome Bm-121 1947 2/25 21.21 5 Excessive Cattaraugus Ct-121 1984 2/26 6.09 85 Deficient Chautauqua Cu-10 1939 2/26 15.29 21 Excessive Chemung Cm-46 1955 2/26 24.13 53 Normal Chenango Cn-12 1975 2/26 8.85 37 " Clinton Cl-145 1992 2/28 23.13 84 Deficient Cortland C-102 1975 2/28 4.66 23 Excessive Dutchess Du-1009 1967 2/27 15.68 82 Deficient Kings *K1194 1971 unavailable Madison M-178 1975 2/28 6.79 48 Normal Nassau *N1259 1962 2/20 42.28 100 Deficient Nassau *N1616 1966 2/20 66.59 99 " Oneida Oe-151 1926 2/26 25.60 80 " Otsego Og-23 1953 2/26 5.38 40 Normal Queens *Q1249 2000 2/20 26.77 -- -- St. Lawrence St-40 1953 2/24 6.28 36 Normal Saratoga Sa-1100 1983 2/27 75.10 57 " Steuben Sb-472 1965 2/26 8.58 55 " Suffolk *S1806 1978 2/20 48.47 100 Deficient Suffolk *S1810 1976 2/20 46.47 100 " Suffolk *S1812 1982 2/22 43.44 93 " Suffolk *S4271 1946 2/19 11.40 26 Normal Suffolk *S5517 1948 2/22 40.43 72 " Suffolk *S8833 1951 2/21 15.56 76 Deficient Sullivan Sv-535 2001 2/14 11.46 -- -- Wyoming Wo-4 1974 2/26 12.16 39 Normal
Provisional Data for February 2002# INDEX STREAMFLOW STATIONS (Reference period 1971-2000)
## Reference period is 1978-2000. *=Deficient @=2/7-10,13-28 e=Estimate **=Excessive # Note: Flow statistics based on data collected through February 28, 2002. 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 2,641 3,085 2,035 01323500 Great Sacandaga Lake at Conklinville 13,100 14,180 13,100 04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft above sea level February 28, 2002 94.67 February 28, 2001 95.24 Average (1939-2000) 95.54 Maximum daily 98.99 (1981) Minimum daily 93.55 (1948) 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.