####018006583####
FOUS71 KTAR 122045

FFHTAR

HEADWATER FLASH FLOOD GUIDANCE

NATIONAL WEATHER SERVICE

NORTHEAST RIVER FORECAST CENTER... NORTON MA

401 PM EDT SAT JUL 12 2025



: WATERSHED AREA AVERAGE RAINFALL IN INCHES REQUIRED

: TO EXCEED FLOOD STAGE

: HSA - HYDROLOGIC SERVICE AREA

.B TAR 250712 Z DH18/DC2507122001 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF

:

:===========================================================

:      CARIBOU HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

MASM1     3.0/  4.5/  5.4/  6.0/  7.2 :MASARDIS, ME

DOVM1     3.0/  3.4/  3.7/  4.6/  5.4 :DOVER, ME

WENM1     3.0/  4.5/  6.0/  7.0/  8.0 :WEST ENFIELD, ME

:===========================================================

:      GRAY HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

NANM1     3.0/  3.5/  4.0/  5.5/  6.6 :NORTH ANSON, ME

SKOM1     3.0/  4.2/  5.0/  5.8/  7.5 :SKOWHEGAN, ME

ROXM1     1.5/  1.8/  2.2/  3.0/  4.6 :ROXBURY, ME

CNWN3     2.5/  2.8/  3.3/  4.5/  5.7 :CONWAY, NH

WOON3     1.6/  1.7/  1.7/  2.2/  3.1 :WOODSTOCK, NH

RUMN3     3.0/  3.7/  4.0/  4.4/  5.4 :RUMNEY, NH

BRSN3     3.0/  4.1/  4.2/  4.7/  5.0 :BRISTOL, NH

DAVN3     3.0/  4.5/  5.1/  6.6/  7.8 :DAVISVILLE, NH

NSTN3     2.8/  3.6/  4.2/  5.1/  6.2 :N STRATFORD, NH

BETN3     2.4/  2.4/  2.6/  3.2/  4.4 :BETHLEHEM JCT, NH

PTRN3     3.0/  3.3/  3.6/  4.5/  5.5 :PETERBORO, NH

GFFN3     3.0/  3.8/  4.3/  5.1/  6.6 :GOFFSTOWN, NH

:===========================================================

:      BOSTON HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

FBGM3     3.0/  3.1/  3.4/  5.0/  6.9 :FITCHBURG, MA

WGTM3     3.0/  3.2/  3.7/  4.7/  6.9 :WEST GROTON, MA

MAYM3     2.7/  2.7/  3.0/  5.6/  7.3 :MAYNARD, MA

SAXM3     1.7/  2.5/  4.4/  6.2/  7.5 :SAXONVILLE, MA

WLMM3     3.0/  3.6/  3.9/  5.2/  7.9 :WILMINGTON, MA

NRWM3     2.8/  3.9/  4.4/  6.0/  6.6 :NORWOOD, MA

DOVM3     3.0/  4.1/  4.2/  5.1/  6.2 :DOVER, MA

NBRM3     3.0/  3.4/  4.0/  5.4/  8.0 :NORTHBRIDGE, MA

WLMC3     3.0/  4.5/  5.2/  5.7/  6.7 :WILLIMANTIC, CT

WSFM3     3.0/  3.9/  4.8/  5.9/  7.4 :WESTFIELD, MA

UNVC3     2.1/  2.4/  3.5/  5.8/  8.0 :UNIONVILLE, CT

:===========================================================

:      NEW YORK HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

GRDN6     3.0/  4.3/  4.9/  5.5/  6.7 :GARDINER, NY

YTCC3     2.1/  3.1/  3.7/  4.4/  5.4 :YANTIC, CT

:===========================================================

:      BURLINGTON HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

CZRN6     3.0/  3.4/  3.7/  5.0/  6.3 :PERRY MILLS, NY

ASFN6     1.6/  1.7/  1.7/  2.2/  2.6 :AUSABLE FORKS, NY

CENV1     3.0/  3.1/  3.2/  3.2/  3.6 :CENTER RUTLAND, VT

MONV1     2.1/  2.2/  2.6/  3.7/  5.2 :MONTPELIER, VT

MOOV1     1.4/  1.5/  1.7/  2.0/  2.9 :MORETOWN, VT

JONV1     2.0/  2.3/  2.5/  2.7/  3.3 :JOHNSON, VT

NTYV1     1.4/  1.6/  2.0/  2.9/  3.8 :NORTH TROY, VT

PASV1     2.2/  3.2/  3.6/  4.2/  5.2 :PASSUMPSIC, VT

WLRV1     2.5/  2.6/  2.7/  3.3/  4.4 :WELLS RIVER, VT

WEHV1     1.8/  2.3/  2.5/  2.8/  3.3 :W HARTFORD, VT

:===========================================================

:      ALBANY HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

NWCN6     3.0/  4.5/  6.0/  6.8/  8.0 :NEWCOMB, NY

HOPN6     3.0/  3.5/  3.9/  4.4/  5.5 :HOPE, NY

GVVN6     2.8/  3.0/  3.3/  3.9/  5.3 :MID. GRANVILLE, NY

BTTN6     2.6/  3.6/  4.2/  5.1/  6.3 :BATTENVILLE, NY

WILM3     2.1/  2.6/  3.2/  4.1/  5.4 :WILLIAMSTOWN, MA

BNTV1     2.2/  2.4/  2.9/  3.7/  4.7 :N. BENNINGTON, VT

LTLN6     2.6/  3.7/  4.2/  4.8/  5.9 :LITTLE FALLS, NY

PTVN6     2.6/  2.9/  3.3/  3.9/  5.7 :PRATTSVILLE, NY

MTRN6     2.1/  2.5/  3.3/  4.3/  6.5 :COLD BROOK, NY

ROSN6     2.2/  3.2/  3.8/  4.6/  5.8 :ROSENDALE, NY

WAPN6     2.1/  2.7/  3.3/  4.0/  5.3 :WAPPINGER FALLS, NY

GTBM3     3.0/  4.5/  6.0/  7.0/  8.0 :GT. BARRINGTON, MA

TENN6     3.0/  4.5/  5.7/  6.9/  8.0 :GAYLORDSVILLE, CT

GAYC3     2.6/  3.0/  3.3/  3.9/  4.6 :GAYLORDSVILLE, CT

:===========================================================

:      BINGHAMTON HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

FLLN6     2.4/  2.8/  3.4/  4.4/  5.6 :ITHACA, NY

ONDN6     2.1/  2.2/  2.4/  3.5/  4.4 :SYRACUSE, NY

NEIN6     1.8/  2.1/  2.3/  2.5/  2.9 :ONEIDA, NY

:===========================================================

:      BUFFALO HSA

:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME

:======= ====  ====  ====  ====  ====  ====================

GOWN6     1.9/  2.3/  2.5/  3.0/  3.6 :GOWANDA, NY

GDVN6     1.9/  2.1/  2.4/  3.0/  3.9 :GARDENVILLE, NY

LCSN6     1.8/  2.0/  2.3/  2.8/  3.6 :LANCASTER, NY

EBZN6     1.7/  2.0/  2.2/  2.6/  3.4 :EBENEZER, NY

WILN6     2.2/  2.3/  2.3/  2.6/  2.9 :WILLIAMSVILLE, NY

BTVN6     3.0/  3.3/  3.6/  4.3/  4.9 :BATAVIA, NY

WLLN6     2.4/  2.7/  3.0/  3.3/  3.9 :WELLSVILLE, NY

GRBN6     2.5/  3.0/  3.4/  4.2/  5.2 :GARBUTT, NY

CHRN6     3.0/  3.7/  4.2/  5.0/  6.3 :CHURCHVILLE, NY

BOON6     3.0/  3.5/  3.9/  4.6/  5.9 :BOONVILLE, NY

.END

$$



NYC WATER SUPPLY FORECAST

ESTIMATED RUNOFF IN MILLIONS OF GALLONS RESULTING FROM THE

FOLLOWING 6-HOUR PRECIPITATION AMOUNTS IN INCHES

:

Drainage areas in square miles are:

GILBOA - 315.      ASHOKAN - 257.     RONDOUT - 95.

W.BRANCH - 43.     CROTON - 335.      KENSICO - 13.

:

.B TAR 250712 Z DH18/DC2507122045 /DUE/QMXC1/QMXC2/QMXC3/QMXC4

.B1 /QMXC5/QMXC6

:

:                 RAINFALL

:IDENT    0.5    1.0    1.5    2.0     3.0     5.0   LOCATION

:======= ===== ====== ====== ====== ======= =======  ================

RONDOUT   167/   369/   576/   786/  2250/  5445/ : RONDOUT RESERVOIR

CROTON    195/   361/   729/  1210/  2328/  8652/ : NEW CROTON DAM

W.BRANC    13/    23/    46/    80/   166/   501/ : W.BRANCH RESERVOIR

KENSICO    20/    46/   151/   262/   487/   937/ : KENSICO

GILBOA    104/   404/   933/  1570/  5510/ 15884/ : SCHOHARIE RESERVOIR

ASHOKAN   335/   742/  1192/  1810/  4666/ 16520/ : ASHOKAN RESERVOIR

.END

$$