Headwater Guidance
Issued by NWS Northeast RFC

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386
FOUS71 KTAR 060042
FFHTAR
HEADWATER FLASH FLOOD GUIDANCE
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER... NORTON MA
ISSUED BY NATIONAL WEATHER SERVICE NATIONAL WATER CENTER... TUSCALOOSA AL
842 PM EDT THU JUN 5 2025

: WATERSHED AREA AVERAGE RAINFALL IN INCHES REQUIRED
: TO EXCEED FLOOD STAGE
: HSA - HYDROLOGIC SERVICE AREA
.B TAR 250606 Z DH00/DC2506060042 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF
:
:===========================================================
:      CARIBOU HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
MASM1     3.0/  3.9/  4.3/  4.6/  5.2 :MASARDIS, ME
DOVM1     2.7/  2.9/  3.0/  3.5/  3.7 :DOVER, ME
WENM1     3.0/  4.5/  6.0/  6.8/  8.0 :WEST ENFIELD, ME
:===========================================================
:      GRAY HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
NANM1     3.0/  3.2/  3.4/  4.4/  4.8 :NORTH ANSON, ME
SKOM1     2.7/  3.6/  4.1/  4.7/  5.9 :SKOWHEGAN, ME
ROXM1     1.7/  1.8/  2.0/  2.4/  3.5 :ROXBURY, ME
CNWN3     2.6/  2.6/  2.7/  3.2/  3.6 :CONWAY, NH
WOON3     1.6/  1.6/  1.7/  2.1/  2.9 :WOODSTOCK, NH
RUMN3     3.0/  3.0/  3.2/  3.5/  4.3 :RUMNEY, NH
BRSN3     3.0/  3.3/  3.3/  3.5/  3.8 :BRISTOL, NH
DAVN3     2.9/  3.1/  3.3/  4.1/  4.9 :DAVISVILLE, NH
NSTN3     2.9/  3.5/  3.7/  4.0/  4.6 :N STRATFORD, NH
BETN3     2.4/  2.4/  2.5/  2.9/  3.8 :BETHLEHEM JCT, NH
PTRN3     3.0/  3.4/  3.5/  3.9/  4.4 :PETERBORO, NH
GFFN3     2.6/  2.7/  2.9/  3.3/  4.3 :GOFFSTOWN, NH
:===========================================================
:      BOSTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
FBGM3     2.7/  2.7/  2.7/  3.5/  4.5 :FITCHBURG, MA
WGTM3     2.6/  2.8/  3.0/  3.7/  5.5 :WEST GROTON, MA
MAYM3     2.4/  2.5/  2.7/  4.6/  5.9 :MAYNARD, MA
SAXM3     1.8/  2.9/  3.8/  4.5/  5.9 :SAXONVILLE, MA
WLMM3     3.0/  3.5/  3.6/  4.7/  7.1 :WILMINGTON, MA
NRWM3     2.7/  4.5/  5.4/  7.0/  8.0 :NORWOOD, MA
DOVM3     3.0/  4.2/  4.2/  4.6/  5.4 :DOVER, MA
NBRM3     3.0/  3.3/  3.6/  4.5/  6.6 :NORTHBRIDGE, MA
WLMC3     3.0/  4.5/  5.3/  5.7/  6.5 :WILLIMANTIC, CT
WSFM3     3.0/  3.7/  4.2/  4.7/  5.7 :WESTFIELD, MA
UNVC3     2.1/  2.3/  3.1/  4.8/  6.9 :UNIONVILLE, CT
:===========================================================
:      NEW YORK HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
GRDN6     3.0/  3.5/  3.6/  3.8/  4.0 :GARDINER, NY
YTCC3     2.2/  3.0/  3.4/  3.7/  4.6 :YANTIC, CT
:===========================================================
:      BURLINGTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
CZRN6     3.0/  3.4/  3.6/  4.8/  6.0 :PERRY MILLS, NY
ASFN6     1.5/  1.6/  1.6/  2.0/  2.3 :AUSABLE FORKS, NY
CENV1     2.5/  2.6/  2.6/  2.6/  2.7 :CENTER RUTLAND, VT
MONV1     2.0/  2.2/  2.7/  3.3/  4.5 :MONTPELIER, VT
MOOV1     1.5/  1.5/  1.6/  1.9/  2.7 :MORETOWN, VT
JONV1     2.3/  2.5/  2.6/  2.7/  3.1 :JOHNSON, VT
NTYV1     1.5/  1.7/  2.2/  3.0/  3.8 :NORTH TROY, VT
PASV1     2.9/  3.3/  3.6/  4.0/  4.6 :PASSUMPSIC, VT
WLRV1     2.2/  2.3/  2.3/  2.5/  3.3 :WELLS RIVER, VT
WEHV1     2.0/  2.4/  2.5/  2.7/  3.0 :W HARTFORD, VT
:===========================================================
:      ALBANY HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
NWCN6     3.0/  4.5/  5.4/  5.7/  6.5 :NEWCOMB, NY
HOPN6     2.7/  2.8/  3.1/  3.3/  4.0 :HOPE, NY
GVVN6     2.2/  2.3/  2.4/  2.5/  3.2 :MID. GRANVILLE, NY
BTTN6     2.4/  3.1/  3.4/  3.7/  4.3 :BATTENVILLE, NY
WILM3     1.8/  2.1/  2.4/  2.9/  3.7 :WILLIAMSTOWN, MA
BNTV1     2.0/  2.1/  2.2/  2.6/  2.9 :N. BENNINGTON, VT
LTLN6     2.5/  3.5/  3.9/  4.2/  5.0 :LITTLE FALLS, NY
PTVN6     2.5/  2.6/  2.9/  3.2/  4.6 :PRATTSVILLE, NY
MTRN6     2.4/  2.6/  2.9/  3.3/  4.6 :COLD BROOK, NY
ROSN6     2.1/  3.0/  3.5/  3.9/  4.8 :ROSENDALE, NY
WAPN6     2.1/  2.7/  3.2/  3.9/  4.9 :WAPPINGER FALLS, NY
GTBM3     3.0/  4.5/  5.4/  6.0/  7.2 :GT. BARRINGTON, MA
TENN6     3.0/  4.5/  5.0/  5.6/  6.6 :GAYLORDSVILLE, CT
GAYC3     2.5/  2.8/  3.0/  3.2/  3.6 :GAYLORDSVILLE, CT
:===========================================================
:      BINGHAMTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
FLLN6     1.7/  1.9/  2.2/  2.7/  3.4 :ITHACA, NY
ONDN6     1.9/  2.0/  2.2/  3.2/  4.0 :SYRACUSE, NY
NEIN6     1.8/  2.1/  2.4/  2.6/  3.2 :ONEIDA, NY
:===========================================================
:      BUFFALO HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
GOWN6     1.7/  2.1/  2.2/  2.4/  2.7 :GOWANDA, NY
GDVN6     1.5/  1.7/  1.9/  2.3/  2.9 :GARDENVILLE, NY
LCSN6     1.5/  1.6/  1.9/  2.3/  2.9 :LANCASTER, NY
EBZN6     1.3/  1.6/  1.8/  2.1/  2.5 :EBENEZER, NY
WILN6     2.0/  2.1/  2.1/  2.4/  2.6 :WILLIAMSVILLE, NY
BTVN6     2.7/  2.7/  2.9/  3.3/  3.7 :BATAVIA, NY
WLLN6     1.3/  1.6/  1.7/  1.9/  2.2 :WELLSVILLE, NY
GRBN6     2.4/  2.7/  3.0/  3.4/  4.1 :GARBUTT, NY
CHRN6     2.8/  3.1/  3.3/  3.5/  3.8 :CHURCHVILLE, NY
BOON6     3.0/  3.2/  3.4/  3.9/  4.8 :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 250606 Z DH00/DC2506060042 /DUE/QMXC1/QMXC2/QMXC3/QMXC4
.B1 /QMXC5/QMXC6
:
:                 RAINFALL
:IDENT    0.5    1.0    1.5    2.0     3.0     5.0   LOCATION
:======= ===== ====== ====== ====== ======= =======  ================
RONDOUT   105/   376/   665/   956/  2384/  5652/ : RONDOUT RESERVOIR
CROTON    263/   723/  1401/  2108/  3653/ 13297/ : NEW CROTON DAM
W.BRANC    28/    62/   113/   171/   299/  1148/ : W.BRANCH RESERVOIR
KENSICO    22/    49/   151/   263/   488/   938/ : KENSICO
GILBOA    366/  1138/  2183/  4049/  9262/ 20007/ : SCHOHARIE RESERVOIR
ASHOKAN   644/  1494/  2573/  3693/  8926/ 21778/ : ASHOKAN RESERVOIR
.END
$$