U.S. Geological Survey New Hampshire - Vermont Water Science Center
Peak River Stages, Discharges, and Approximate Recurrence Intervals
Provisional Data (subject to revision) for Floods of October 9-26, 2005
			Flood Peak					Previous Maximum in Record
Station Number	Station Name	Drainage Area	Stage	Discharge		Date	Recurrence Interval	Stage	Discharge	Year	Record
		sq.mi.	Feet	CFS	CFSM		years	Feet	CFS		Start Year
Androscoggin River Basin
01052500	DIAMOND R NEAR WENTWORTH LOC., NH	152	10.14	8280	54.5	16-Oct	25-YR	12.11	12800	1998	1941
01053500	ANDROSCOGGIN R AT ERROL, NH	1046	6.87	9,390	9.0	18-Oct	2-YR	9.4	16500	1969	1905
01054000	ANDROSCOGGIN R NEAR GORHAM, NH	1361	9.08	16,100	11.8	17-Oct	10-YR*	unk	21900	1923	1914
Saco River Basin
01064801	BEAR CAMP R NEAR TAMWORTH, NH	68	8.92	4,940	73.1	9-Oct	5-YR	9.64	6,150	1998	1993
Piscataqua River Basin
01073000	OYSTER RIVER NEAR DURHAM, NH	12.1	5.28	305	25.2	16-Oct	2-YR	8.45	1160	1996	1935
01073500	LAMPREY R NEAR NEWMARKET, NH	183	9.37	3300	18.0	17-Oct	5-YR	15.14	7570	1987	1934
Merrimack River BasinRiver Basin
01074520	E.B. PEMIGEWASSET R AT LINCOLN, NH	115	11.68	6,810	59.2	9-Oct	2-YR	14.51	16,900	2002	1993
01075000	PEMIGEWASSET R AT WOODSTOCK, NH	193	10.40	14,500	75.1	9-Oct	2-YR	16.13	47,000	1959	1940
01076000	BAKER RIVER NEAR RUMNEY, NH	143	8.08	5,230	36.6	9-Oct	2-YR	15.50	21,400	1942	1929
01076500	PEMIGEWASSET R AT PLYMOUTH, NH	622	15.36	23,300	37.5	9-Oct	2-YR	29.00	65,400	1936	1904
01078000	SMITH R NEAR BRISTOL, NH	86	8.06	2,420	28.2	9-Oct	<5-YR	16.09	8,100	1936	1918
01081000	WINNIPESAUKEE R AT TILTON, NH	471	8.52	4,410	9.4	15-Oct	30-YR*	8.68	4,580	1984	1937
01082000	CONTOOCOOK R AT PETERBOROUGH, NH	68	5.72	2,260	39.1	15-Oct	15-YR*	6.82	3,210	2004	1945
01084500	BEARDS BROOK NEAR HILLSBORO, NH	55	9.90	4,500	81.2	9-Oct	80-YR*1	6.53	2,190	1959	1945
01085000	CONTOOCOOK R NEAR HENNIKER, NH	368	13.45	10,400	28.3	16-Oct	15-YR*	21.30	22,200	1938	1940
01086000	WARNER R AT DAVISVILLE, NH	146	9.90	4,780	32.7	9-Oct	10-YR*	9.88	4,510	1953	1939
01089100	SOUCOOK R NEAR CONCORD, NH	82	12.00	2,550	31.1	16-Oct	10-YR*	11.59	2,320	1996	1988
01091500	PISCATAQUOG R NEAR GOFFSTOWN, NH	202	9.45	4,750	23.5	15-Oct	2-YR	11.28	7,600	1987	1939
01092000	MERRIMACK R BELOW MANCHESTER, NH	3,092	13.24	42,500	13.7	16-Oct	5-YR	25.87	102,000	1938	1937
01094000	SOUHEGAN R AT MERRIMACK, NH	171	7.60	3,350	19.6	16-Oct	2-YR	16.20	16,900	1936	1909
010965852	BEAVER BK AT N. PELHAM, NH	48	10.47	824	17.2	16-Oct	2-YR	12.94	1,850	1987	1987
Connecticut River Basint River Basin
01129200	CONNECTICUT R NEAR PITTSBURG, NH	254	8.08	5,520	21.7	17-Oct	50-YR	7.97	5260	1996	1957
01129500	CONNECTICUT R AT N. STRATFORD, NH	799	13.35	23,900	29.9	17-Oct	10-YR	20.6	32300	1998	1930
01131500	CONNECTICUT R NEAR DALTON, NH	1514	21.10	31,300	20.7	18-Oct	5-YR	25.6	48300	1936	1927
01133000	E. BR. PASSUMPIC R NEAR E. HAVEN, VT	54	7.17	1,690	31.4	17-Oct	2-YR	11.45	5,850	2002	1939
01134500	MOOSE R AT VICTORY, VT	75.2	10.14	2920	38.8	19-Oct	5-YR	12.04	4940	1973	1947
01138500	CONNECTICUT R AT WELLS RIVER, VT	2644	12.24	38,300	14.5	18-Oct	2-YR	17.35	57100	1973	1950
01152500	SUGAR R AT W. CLAREMONT, NH	269	8.96	9,760	36.3	9-Oct	20-YR*	11.80	14,000	1936	1928
01153550	WILLIAMS R NEAR ROCKINGHAM, VT	112	8.45	5,830	52.1	9-Oct	2-YR	10.59	11,500	1987	1987
01154000	SAXTONS R AT SAXTONS R, VT	72	9.73	3,970	55.0	9-Oct	2-YR	13.26	7,510	1973	1940
01155000	COLD RIVER AT DREWSVILLE, NH	83	23.70	15,000	180.0	9-Oct	>500-YR*2	12.30	6,718	1973	1940
01160350	ASHUELOT R AT W. SWANZEY, NH	316	5.61	5,330	16.9	9-Oct	POR	3.81	3,620	1996	1994
01161000	ASHUELOT R AT HINSDALE, NH	420	9.6	11,700	27.9	9-Oct	>100-YR*	20.2	16600	1936	1907
Hudson River Basiner Basin
01334000	WALLOOMSAC R NEAR N. BENNINGTON, VT	111	11.41	7,690	69.3	9-Oct	25-YR*	12.04	8,450	1938	1931
St Lawrence River Basin e River Basin
04280350	METTAWEE R NEAR PAWLET, VT	70	5.11	2,230	31.8	9-Oct	2-YR	7.31	7,080	2000	1984
04285500	N. BR. WINOOSKI AT WRIGHTSVILLE, VT	69.2	4.05	853	12.3	17-Oct	2-YR	6.53	2170	1934	1933
04288000	MAD RIVER NEAR MORETOWN, VT	139	9.11	6340	45.6	17-Oct	2-YR	16.34	18400	1938	1929
04292500	LAMOILLE R AT E. GEORGIA, VT	686	10.14	14,300	20.8	17-Oct	2-YR	21.64	23700	1982	1929
04293000	MISSISQUOI R NEAR NORTH TROY, VT	131	11.65	7,530	57.5	17-Oct	20-YR*	14.55	10,600	2002	1931
04293500	MISSISQUOI R NEAR E. BERKSHIRE, VT	479	13.54	13,500	28.2	17-Oct	5-YR	18.92	21200	1982	1915
04296500	CLYDE RIVER AT NEWPORT, VT	142	7.08	1650	11.6	17-Oct	2-YR	5.76	3900	1936	1909
1Gage discontinued in 1970. Peak estimated from high water mark in vicinity of gage structure by extrapolation of rating curve.
2Gage discontinued in 1978. Peak estimated from high water mark in gage structure by extrapolation of rating curve. Peak affected by failure of upstream impoundments.
*Recurrence interval estimates obtained from FEMA Flood Insurance Study reports
CFS -	Cubic feet per second
CFSM  -	Cubic feet per second per square mile of drainage area
FEMA  -	Federal Emergency Management Agency
POR    -	Period of record is less than 10 years, recurrence interval not determined
Recurrence Interval - average time interval between occurrences of a hydrological event in years