Headwater Guidance
Issued by NWS Northeast RFC

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417
FOUS71 KTAR 222045
FFHTAR
HEADWATER FLASH FLOOD GUIDANCE
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER... NORTON MA
303 PM EST FRI NOV 22 2024

: WATERSHED AREA AVERAGE RAINFALL IN INCHES REQUIRED
: TO EXCEED FLOOD STAGE
: HSA - HYDROLOGIC SERVICE AREA
.B TAR 241122 Z DH18/DC2411222003 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF
:
:===========================================================
:      CARIBOU HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
MASM1     3.0/  4.5/  5.9/  6.9/  8.0 :MASARDIS, ME
DOVM1     2.7/  3.2/  3.7/  4.8/  5.9 :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     2.7/  3.2/  3.8/  5.4/  6.6 :NORTH ANSON, ME
SKOM1     2.0/  2.6/  3.1/  3.6/  4.7 :SKOWHEGAN, ME
ROXM1     1.3/  1.6/  2.0/  3.0/  4.5 :ROXBURY, ME
CNWN3     2.4/  2.8/  3.8/  5.5/  7.3 :CONWAY, NH
WOON3     1.4/  1.5/  1.6/  2.3/  3.5 :WOODSTOCK, NH
RUMN3     2.8/  2.9/  3.1/  3.6/  4.6 :RUMNEY, NH
BRSN3     2.7/  2.8/  2.9/  3.5/  3.8 :BRISTOL, NH
DAVN3     2.3/  2.5/  2.9/  4.1/  5.1 :DAVISVILLE, NH
NSTN3     2.6/  3.6/  4.2/  5.1/  6.3 :N STRATFORD, NH
BETN3     2.7/  2.7/  2.8/  3.3/  4.4 :BETHLEHEM JCT, NH
PTRN3     3.0/  3.3/  3.9/  4.9/  6.1 :PETERBORO, NH
GFFN3     2.4/  2.7/  3.5/  4.6/  6.4 :GOFFSTOWN, NH
:===========================================================
:      BOSTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
FBGM3     2.5/  2.6/  3.2/  5.1/  7.3 :FITCHBURG, MA
WGTM3     3.0/  3.7/  4.8/  6.4/  8.0 :WEST GROTON, MA
MAYM3     2.5/  2.5/  3.7/  6.5/  8.0 :MAYNARD, MA
SAXM3     1.6/  2.6/  5.2/  7.0/  8.0 :SAXONVILLE, MA
WLMM3     3.0/  3.3/  3.8/  5.4/  8.0 :WILMINGTON, MA
NRWM3     3.0/  4.0/  6.0/  7.0/  8.0 :NORWOOD, MA
DOVM3     3.0/  3.8/  4.0/  6.0/  7.9 :DOVER, MA
NBRM3     3.0/  3.3/  4.4/  6.5/  8.0 :NORTHBRIDGE, MA
WLMC3     3.0/  4.5/  5.4/  6.4/  8.0 :WILLIMANTIC, CT
WSFM3     2.9/  3.9/  5.4/  7.0/  8.0 :WESTFIELD, MA
UNVC3     1.9/  2.2/  3.6/  6.4/  8.0 :UNIONVILLE, CT
:===========================================================
:      NEW YORK HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
GRDN6     2.7/  3.2/  3.8/  4.6/  5.7 :GARDINER, NY
YTCC3     2.2/  2.8/  3.6/  4.4/  5.6 :YANTIC, CT
:===========================================================
:      BURLINGTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
CZRN6     2.6/  2.7/  3.0/  4.2/  5.3 :PERRY MILLS, NY
ASFN6     0.6/  0.6/  0.6/  1.0/  1.3 :AUSABLE FORKS, NY
CENV1     1.8/  1.8/  1.8/  1.8/  2.1 :CENTER RUTLAND, VT
MONV1     1.9/  2.0/  2.4/  3.3/  4.6 :MONTPELIER, VT
MOOV1     1.1/  1.1/  1.3/  1.6/  2.4 :MORETOWN, VT
JONV1     1.9/  2.0/  2.3/  2.5/  3.1 :JOHNSON, VT
NTYV1     1.3/  1.5/  1.9/  2.7/  3.6 :NORTH TROY, VT
PASV1     2.5/  3.2/  3.5/  4.0/  4.8 :PASSUMPSIC, VT
WLRV1     1.9/  2.0/  2.0/  2.5/  3.4 :WELLS RIVER, VT
WEHV1     1.5/  2.0/  2.3/  2.6/  3.3 :W HARTFORD, VT
:===========================================================
:      ALBANY HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
NWCN6     3.0/  4.5/  4.8/  5.2/  6.2 :NEWCOMB, NY
HOPN6     2.0/  2.1/  2.4/  2.7/  3.5 :HOPE, NY
GVVN6     1.9/  2.1/  2.5/  3.2/  4.6 :MID. GRANVILLE, NY
BTTN6     2.0/  2.9/  3.5/  4.6/  6.0 :BATTENVILLE, NY
WILM3     1.3/  1.7/  2.2/  3.0/  4.1 :WILLIAMSTOWN, MA
BNTV1     1.6/  1.7/  2.0/  2.7/  3.5 :N. BENNINGTON, VT
LTLN6     1.7/  2.5/  2.9/  3.2/  3.9 :LITTLE FALLS, NY
PTVN6     2.6/  3.3/  4.1/  5.1/  7.2 :PRATTSVILLE, NY
MTRN6     2.2/  2.7/  4.0/  5.1/  7.5 :COLD BROOK, NY
ROSN6     1.8/  3.0/  3.8/  4.8/  6.4 :ROSENDALE, NY
WAPN6     1.9/  2.6/  3.7/  4.9/  6.7 :WAPPINGER FALLS, NY
GTBM3     3.0/  4.4/  4.9/  5.7/  7.0 :GT. BARRINGTON, MA
TENN6     3.0/  4.5/  5.8/  7.0/  8.0 :GAYLORDSVILLE, CT
GAYC3     2.4/  3.0/  4.4/  5.4/  7.2 :GAYLORDSVILLE, CT
:===========================================================
:      BINGHAMTON HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
FLLN6     2.0/  2.3/  2.8/  3.6/  4.7 :ITHACA, NY
ONDN6     1.6/  1.7/  2.0/  3.4/  4.5 :SYRACUSE, NY
NEIN6     0.8/  1.0/  1.2/  1.5/  2.1 :ONEIDA, NY
:===========================================================
:      BUFFALO HSA
:IDENT    1HR   3HR   6HR  12HR  24HR  HEADWATER NAME
:======= ====  ====  ====  ====  ====  ====================
GOWN6     1.3/  1.7/  1.9/  2.3/  3.0 :GOWANDA, NY
GDVN6     1.0/  1.2/  1.5/  2.0/  2.7 :GARDENVILLE, NY
LCSN6     1.0/  1.2/  1.4/  1.9/  2.6 :LANCASTER, NY
EBZN6     0.9/  1.1/  1.4/  1.8/  2.5 :EBENEZER, NY
WILN6     1.4/  1.5/  1.6/  2.0/  2.5 :WILLIAMSVILLE, NY
BTVN6     1.8/  1.9/  2.2/  2.8/  3.4 :BATAVIA, NY
WLLN6     1.2/  1.5/  1.7/  2.1/  2.7 :WELLSVILLE, NY
GRBN6     2.0/  2.5/  3.2/  4.2/  5.5 :GARBUTT, NY
CHRN6     2.0/  2.4/  2.8/  3.4/  4.5 :CHURCHVILLE, NY
BOON6     2.6/  2.7/  2.9/  3.5/  4.6 :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 241122 Z DH18/DC2411222045 /DUE/QMXC1/QMXC2/QMXC3/QMXC4
.B1 /QMXC5/QMXC6
:
:                 RAINFALL
:IDENT    0.5    1.0    1.5    2.0     3.0     5.0   LOCATION
:======= ===== ====== ====== ====== ======= =======  ================
RONDOUT   173/   325/   472/   633/  2063/  5355/ : RONDOUT RESERVOIR
CROTON    544/   927/  1319/  1764/  2688/ 11036/ : NEW CROTON DAM
W.BRANC    43/    75/   109/   144/   233/   956/ : W.BRANCH RESERVOIR
KENSICO    66/   177/   289/   402/   627/  1078/ : KENSICO
GILBOA    263/   577/  1009/  1504/  4870/ 15572/ : SCHOHARIE RESERVOIR
ASHOKAN   442/   821/  1227/  1678/  3897/ 15929/ : ASHOKAN RESERVOIR
.END
$$