U.S. GEOLOGICAL SURVEY, WRD New York District, Troy, NY WATER RESOURCES REVIEW AND CURRENT CONDITIONS STATEMENT FOR JULY 2002 Prepared August 1, 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 deficient range except at Little Salmon River at Bombay. Conditions at this site in extreme northeastern New York were in the excessive range due to some heavy precipitation from localized storms. This July was the fourth driest on record for the Albany area with only 0.82 inches of rain compared to the average of 3.18 inches. The total New York City reservoir system was at 79.9 percent of capacity on July 31; normal for this period is 90.3 percent of capacity. Ithaca Subdistrict--Summary Report Provisional streamflow conditions at all monitored sites included in this report for western New York decreased to the normal range after being excessive the previous month. Coram Subdistrict--Summary Report Mean flow at Connetquot Brook near Central Islip was in the deficient range for the ninth consecutive month. The lowest provisional period-of-record minimum monthly mean discharge for July was recorded at this site. ___________________________________________________________________________________________
___________________________________________________________________________________________ Provisional Data for July 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 13 100 Deficient 01318500 Hudson River at Hadley 1921 723 82 Deficient 01321000 Sacandaga River nr Hope 1911 182 68 Normal 01350000 Schoharie Creek at Prattsville 1902 46 74 Normal 01357500 Mohawk River at Cohoes 1917 1,360 76 Deficient 01371500 Wallkill River at Gardiner 1924 135 76 Deficient 01372500 Wappinger Cr nr Wappingers Falls 1928 47 69 Normal 01413500 E Br Delaware River at Margaretville 1937 54 67 Normal 01420500 Beaver Kill at Cooks Falls 1913 112 76 Deficient 01423000 W Br Delaware River at Walton 1950 138 50 Normal 01502500 Unadilla River at Rockdale 1930-95,2001 213 55 " 01503000 Susquehanna River at Conklin 1912 831 60 " 01512500 Chenango River nr Chenango Forks 1912 639 48 " 01531000 Chemung River at Chemung 1903 603 56 " 03011020 Allegheny River at Salamanca 1903 868 44 " 04213500 Cattaraugus Creek at Gowanda 1940-98,2000 232 48 " 04217000 Tonawanda Creek at Batavia 1944 38 45 " 04221000 Genesee River at Wellsville 1916 126 36 " 04230500 Oatka Creek at Garbutt 1945 77 30 " 04234000 Fall Creek at Ithaca 1925 63 42 " 04243500 Oneida Creek at Oneida 1950 51 51 Normal 04256000 Independence River at Donnattsburg 1942 49 77 Deficient 04262500 W Br Oswegatchie R nr Harrisville 1916 101 83 Deficient 04270200 Little Salmon River at Bombay 1958-95,2002 96 6 Excessive 04275500 Ausable River at Au Sable Forks 1910-68,1990 318 44 Normal MONTHLY MEAN DISCHARGE FOR SELECTED STREAMFLOW STATIONS
Provisional Data for July 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. Year record Percent County Well No. began Date Water Level Exceedence Conditions Albany A-636 1974 7/30 11.57 94 Deficient Broome Bm-128 1980 7/25 24.77 27 Normal Broome Bm-129 1985 7/26 67.91 7 Excessive Cattaraugus Ct-121 1984 7/25 7.21 86 Deficient Chautauqua Cu-10 1939 7/25 31.08 64 Normal Chemung Cm-46 1955 7/26 24.77 51 " Chenango Cn-12 1975 7/29 10.32 65 Normal Clinton Cl-145 1992 7/30 23.21 75 Deficient Cortland C-998 2002 7/26 5.38 - -- Dutchess Du-1009 1967 7/26 16.38 74 Normal Hamilton H-3 1966 7/16 13.90 65 Normal Kings *K1194 1971 unavailable Madison M-178 1975 7/30 9.29 58 Normal Nassau *N1259 1962 7/16 41.15 100 Deficient Nassau *N1616 1966 7/16 64.75 100 Deficient Oneida Oe-151 1926 7/29 22.55 54 Normal Otsego Og-23 1953 7/29 8.93 74 Normal Queens *Q1249 2000 7/30 25.21 - -- Rockland Ro-18 1949 7/26 19.84 76 Deficient St. Lawrence St-40 1953 7/30 6.47 38 Normal Saratoga Sa-1100 1983 7/26 93.40 77 Deficient Steuben Sb-472 1965 7/29 9.68 44 Normal Suffolk *S1806 1978 7/16 47.74 100 Deficient Suffolk *S1810 1976 7/16 45.32 100 " Suffolk *S1812 1982 7/15 41.41 100 Deficient Suffolk *S4271 1946 7/15 10.14 74 Normal Suffolk *S5517 1948 7/31 40.09 94 Deficient Suffolk *S8833 1951 7/24 15.45 87 Deficient Sullivan Sv-535 2001 8/1 12.08 - -- Washington W-533 1974 7/26 7.08 40 Normal Wyoming Wo-4 1974 7/29 12.89 36 Normal 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 4,074 4,020 4,081 01323500 Great Sacandaga Lake at Conklinville 29,600 30,110 28,631 04295000 Richelieu River (Lake Champlain) at Rouses Point, NY - Elevation in ft above sea level July 31, 2002 96.54 July 31, 2001 95.38 Average (1939-2000) 95.78 Maximum daily 99.34 (1973) Minimum daily 93.81 (1965) Provisional Data for July 2002# INDEX STREAMFLOW STATIONS (Reference period 1971-2000)
## Reference period is 1978-2000 * Deficient # Note: Flow statistics based on data collected through July 31, 2002. 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.