230
FOUS71 KTAR 171941
FFHTAR
HEADWATER FLASH FLOOD GUIDANCE
NATIONAL WEATHER SERVICE
NORTHEAST RIVER FORECAST CENTER... NORTON MA
1230 PM EDT TUE MAR 17 2026
: WATERSHED AREA AVERAGE RAINFALL IN INCHES REQUIRED
: TO EXCEED FLOOD STAGE
: HSA - HYDROLOGIC SERVICE AREA
.B TAR 260317 Z DH12/DC2603171630 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF
:
:===========================================================
: CARIBOU HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
MASM1 3.0/ 3.6/ 4.0/ 4.7/ 5.8 :MASARDIS, ME
DOVM1 1.6/ 1.7/ 1.7/ 2.2/ 2.9 :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 0.8/ 0.8/ 0.9/ 1.5/ 1.7 :NORTH ANSON, ME
SKOM1 1.4/ 2.1/ 2.4/ 2.9/ 3.9 :SKOWHEGAN, ME
ROXM1 0.5/ 0.5/ 0.5/ 0.7/ 1.4 :ROXBURY, ME
CNWN3 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :CONWAY, NH
WOON3 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :WOODSTOCK, NH
RUMN3 1.2/ 1.2/ 1.2/ 1.5/ 2.1 :RUMNEY, NH
BRSN3 2.0/ 2.0/ 2.0/ 2.0/ 2.0 :BRISTOL, NH
DAVN3 1.8/ 1.9/ 2.1/ 2.7/ 3.3 :DAVISVILLE, NH
NSTN3 1.8/ 2.1/ 2.3/ 2.5/ 3.0 :N STRATFORD, NH
BETN3 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :BETHLEHEM JCT, NH
PTRN3 1.4/ 1.5/ 1.5/ 1.6/ 1.7 :PETERBORO, NH
GFFN3 1.1/ 1.1/ 1.3/ 1.7/ 2.4 :GOFFSTOWN, NH
:===========================================================
: BOSTON HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
FBGM3 1.6/ 1.6/ 1.6/ 1.8/ 2.7 :FITCHBURG, MA
WGTM3 1.5/ 1.5/ 1.6/ 2.2/ 3.6 :WEST GROTON, MA
MAYM3 2.1/ 2.1/ 2.1/ 2.3/ 2.3 :MAYNARD, MA
SAXM3 1.4/ 1.4/ 1.4/ 1.4/ 1.4 :SAXONVILLE, MA
WLMM3 2.6/ 2.8/ 2.8/ 3.6/ 5.6 :WILMINGTON, MA
NRWM3 2.2/ 2.7/ 2.9/ 3.7/ 4.3 :NORWOOD, MA
DOVM3 2.3/ 2.3/ 2.3/ 2.3/ 2.3 :DOVER, MA
NBRM3 1.8/ 1.9/ 2.0/ 2.8/ 4.2 :NORTHBRIDGE, MA
WLMC3 2.1/ 2.6/ 2.8/ 3.1/ 3.6 :WILLIMANTIC, CT
WSFM3 2.1/ 2.7/ 3.1/ 3.6/ 4.4 :WESTFIELD, MA
UNVC3 0.7/ 0.8/ 1.1/ 2.1/ 3.2 :UNIONVILLE, CT
:===========================================================
: NEW YORK HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
GRDN6 1.9/ 2.3/ 2.5/ 2.7/ 2.8 :GARDINER, NY
YTCC3 0.7/ 0.7/ 0.7/ 0.7/ 0.7 :YANTIC, CT
:===========================================================
: BURLINGTON HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
CZRN6 2.4/ 2.5/ 2.7/ 3.6/ 4.5 :PERRY MILLS, NY
ASFN6 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :AUSABLE FORKS, NY
CENV1 1.4/ 1.5/ 1.5/ 1.5/ 1.5 :CENTER RUTLAND, VT
MONV1 1.3/ 1.3/ 1.3/ 1.5/ 2.4 :MONTPELIER, VT
MOOV1 0.5/ 0.5/ 0.6/ 0.8/ 1.4 :MORETOWN, VT
JONV1 0.8/ 0.8/ 0.8/ 0.8/ 0.8 :JOHNSON, VT
NTYV1 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :NORTH TROY, VT
PASV1 1.6/ 1.9/ 2.3/ 2.7/ 2.7 :PASSUMPSIC, VT
WLRV1 0.6/ 0.6/ 0.6/ 0.6/ 0.7 :WELLS RIVER, VT
WEHV1 0.6/ 0.9/ 1.1/ 1.2/ 1.5 :W HARTFORD, VT
:===========================================================
: ALBANY HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
NWCN6 3.0/ 3.6/ 3.7/ 3.9/ 4.6 :NEWCOMB, NY
HOPN6 0.5/ 0.5/ 0.5/ 0.5/ 0.5 :HOPE, NY
GVVN6 1.3/ 1.3/ 1.4/ 1.5/ 2.1 :MID. GRANVILLE, NY
BTTN6 1.5/ 2.1/ 2.4/ 2.6/ 3.2 :BATTENVILLE, NY
WILM3 0.5/ 0.5/ 0.6/ 0.6/ 0.8 :WILLIAMSTOWN, MA
BNTV1 0.9/ 1.0/ 1.1/ 1.4/ 1.8 :N. BENNINGTON, VT
LTLN6 1.2/ 1.7/ 2.0/ 2.1/ 2.5 :LITTLE FALLS, NY
PTVN6 1.3/ 1.5/ 1.7/ 2.0/ 3.1 :PRATTSVILLE, NY
MTRN6 1.2/ 1.3/ 1.4/ 1.8/ 2.7 :COLD BROOK, NY
ROSN6 1.2/ 1.9/ 2.3/ 2.5/ 3.2 :ROSENDALE, NY
WAPN6 1.4/ 1.7/ 2.0/ 2.2/ 2.7 :WAPPINGER FALLS, NY
GTBM3 3.0/ 3.1/ 3.3/ 3.6/ 4.1 :GT. BARRINGTON, MA
TENN6 3.0/ 3.2/ 3.4/ 3.7/ 4.3 :GAYLORDSVILLE, CT
GAYC3 1.2/ 1.3/ 1.3/ 1.3/ 1.3 :GAYLORDSVILLE, CT
:===========================================================
: BINGHAMTON HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
FLLN6 1.8/ 2.0/ 2.2/ 2.5/ 3.2 :ITHACA, NY
ONDN6 1.6/ 1.6/ 1.8/ 2.4/ 3.1 :SYRACUSE, NY
NEIN6 1.2/ 1.5/ 1.7/ 1.9/ 2.5 :ONEIDA, NY
:===========================================================
: BUFFALO HSA
:IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME
:======= ==== ==== ==== ==== ==== ====================
GOWN6 1.4/ 1.7/ 1.8/ 2.0/ 2.2 :GOWANDA, NY
GDVN6 1.0/ 1.3/ 1.5/ 1.8/ 2.3 :GARDENVILLE, NY
LCSN6 1.0/ 1.2/ 1.4/ 1.7/ 2.1 :LANCASTER, NY
EBZN6 1.0/ 1.3/ 1.4/ 1.7/ 2.2 :EBENEZER, NY
WILN6 1.4/ 1.5/ 1.5/ 1.8/ 1.9 :WILLIAMSVILLE, NY
BTVN6 1.7/ 1.8/ 1.9/ 2.1/ 2.3 :BATAVIA, NY
WLLN6 1.1/ 1.3/ 1.5/ 1.6/ 1.9 :WELLSVILLE, NY
GRBN6 1.8/ 2.1/ 2.3/ 2.5/ 3.0 :GARBUTT, NY
CHRN6 2.0/ 2.2/ 2.4/ 2.6/ 3.0 :CHURCHVILLE, NY
BOON6 2.2/ 2.2/ 2.3/ 2.7/ 3.2 :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 260317 Z DH18/DC2603171941 /DUE/QMXC1/QMXC2/QMXC3/QMXC4
.B1 /QMXC5/QMXC6
:
: RAINFALL
:IDENT 0.5 1.0 1.5 2.0 3.0 5.0 LOCATION
:======= ===== ====== ====== ====== ======= ======= ================
RONDOUT 612/ 916/ 1353/ 2163/ 3801/ 7098/ : RONDOUT RESERVOIR
CROTON 1715/ 2674/ 3655/ 4650/ 10040/ 21355/ : NEW CROTON DAM
W.BRANC 224/ 322/ 423/ 526/ 1105/ 2552/ : W.BRANCH RESERVOIR
KENSICO 112/ 224/ 337/ 450/ 675/ 1126/ : KENSICO
GILBOA 2196/ 3410/ 5965/ 8618/ 13995/ 24832/ : SCHOHARIE RESERVOIR
ASHOKAN 3265/ 4471/ 6467/ 9632/ 16109/ 29210/ : ASHOKAN RESERVOIR
.END
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