DISCHARGE AT PARTIAL-RECORD STATIONS AND MISCELLANEOUS SITES
As the number of streams on which streamflow information is likely to be desired far exceeds the number of stream-
gaging stations feasible to operate at one time, the Geological Survey collects limited streamflow data at sites other
than stream-gaging stations. When limited streamflow data are collected on a systematic basis over a period of years for
use in hydrologic analyses, the site at which the data are collected is called a partial-record station. Data collected
at these partial-record stations are usable in low-flow or floodflow analyses, depending on the type of data collected.
In addition, discharge measurements are made at other sites not included in the partial-record program. These
measurements are generally made in times of drought or flood to give better areal coverage to those events. Those
measurements and others collected for some special reason are called measurements at miscellaneous sites.
Crest-stage partial-record stations
The following table contains annual maximum discharges for crest-stage stations. A crest-stage gage is a device
which will register the peak stage occurring between inspections of the gage. A stage-discharge relation for each gage is
developed from discharge measurements made by indirect measurements of peak flow or by current meter. The date of the
maximum discharge is not always certain but is usually determined by comparison with nearby continuous-record stations,
weather records, or local inquiry. Only the maximum discharge for each water year is given. Information on some lower
floods may have been obtained, and discharge measurements may have been made for purposes of establishing the stage-
discharge relation, but these are not published herein. The years given in the period of record represent water years for
which the annual maximum has been determined.
Maximum discharge at crest-stage partial-record stations
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Water year 1997 maximum Period of record maximum
____________________________ ________________________________
Station name Location Period Gage Dis- Gage Dis-
and and of Date height charge Date height charge
number drianage area record (ft) (ft3/s) (ft) (ft3/s)
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MERRIMACK RIVER BASIN
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Pemigewasset Lat 43°58'34", Long 71°40'48", 1940-77±, 10-21-96 10.48 15,200 10-24-59 16.13 47,000
River at Grafton County, Hydrologic 1978-80,
Woodstock, Unit 01070001, on right bank, 1985-97
NH 0.2 mi east of Woodstock and
(01075000) 0.7 mi upstream from Eastman
Brook. Drainage area is
193 mi2.
Baker River Lat 43°47'46", Long 71°50'42", 1929-77±, 11-09-96 8.62 5,700 6-15-42 15.50 21,400
near Rumney, Grafton County, Hydrologic 1978-81,
NH Unit 01070001, on right bank, 1985-97
(01076000) 200 ft upstream from small
right bank tributary, 0.3 mi
upstream from Halls Brook, and
1.8 mi southwest of Rumney.
Drainage area is 143 mi2.
Merrimack Lat 43°25'26", Long 71°50'12", 1903-78±, 4-20-97 14.27 18,500 3-19-36 36.4 83,000
River at Merrimack County, Hydrologic 1983-97
Franklin Unit 01070002, 1 mi downstream
Junction, NH from confluence of Pemigewas-
(01081500) set and Winnipesaukee Rivers.
Drainage area is 1,507 mi2.
Contoocook Lat 42°51'45", Long 71°57'55", 1945-77±, 10-21-96 5.83 2,170 4-06-87 6.62 2,860
River at Hillsborough County, Hydro- 1978-97
Peterbor- logic Unit 01070003, 1 mi
ough, NH south of Peterborough, and
(01082000) 1.5 mi upstream from Nubanusit
Brook. Drainage area is
68.1 mi2.
Nubanusit Lat 42°53'10", Long 71°58'24", 1920-31±, 12-04-96 4.15 603 4-11-31 a 1,130
Brook near Hillsborough County, Hydro- 1945-97
Peterbor- logic Unit 01070003, on left
ough, NH bank 1.2 mi downstream from
(01083000) Edward Macdowell Reservoir,
1.3 mi northwest of Peterbor-
ough, and 1.5 mi upstream from
mouth. Drainage area is
46.9 mi2.
Contoocook Lat 43°09'10", Long 71°51'24", 1940-77±, 10-22-96 13.18 9,840 b 9-21-38 b 21.30 22,200
River near Merrimack County, Hydrologic 1988-97
Henniker, Unit 01070003, 0.6 mi down-
NH stream from Sand Brook and
(01085000) 2.5 mi southwest of Henniker.
Drainage area is 368 mi2.
Contoocook Lat 43°11'31", Long 71°44'51", 1903-07±, 10-24-96 8.20 4,850 4-08-87 10.89 7,530
River below Merrimack County, Hydrologic 1963-89±,
Hopkinton Unit 01070003, on right bank 1990-97
Dam, at West 400 ft downstream from covered
Hopkinton, bridge at West Hopkinton,
NH 0.2 mi downstream from Hopkin-
(01085500) ton Dam, and 5.9 mi upstream
from Warner River. Drainage
area is 427 mi2.
Blackwater Lat 43°17'45", Long 71°41'46", 1918-20±, 10-25-96 7.06 2,220 3-19-36 11.78 11,000
River near Merrimack County, Hydrologic 1927-89±,
Webster, NH Unit 01070003, on left bank 1990-97
(01087000) 0.2 mi west of Dingit corner,
2.4 mi downstream from Black-
water Dam, 2.5 mi southeast of
Webster, and 6.5 mi upstream
from mouth. Drainage area is
129 mi2.
Piscataquog Lat 43°05'29", Long 71°39'36", 1963-89±, 10-25-96 8.77 1,550 6-12-84 9.09 1,770
River below Hillsborough County, Hydro- 1990-97
Everett Dam logic Unit 01070002, on right
near East bank 500 ft downstream from
Weare, NH Everett Dam and 1.4 mi south-
(01090800) east of East Weare. Drainage
area is 63.1 mi2.
Piscataquog Lat 43°00'58", Long 71°33'03", 1939-78±, 10-21-96 10.61 6,470 4-06-87 11.28 7,600
River near Hillsborough County, Hydro- 1983-97
Goffstown, logic Unit 01070002, 0.2 mi
NH upstream from Harry Brook,
(01091500) 0.9 mi downstream from Glen
Lake, and 2.5 mi east of
Goffstown. Drainage area is
202 mi2.
Souhegan River Lat 42°51'27", Long 71°30'24", 1909-76±, 10-22-96 9.96 6,260 3-19-36 16.2 16,900
at Merrimack, Hillsborough County, Hydro- 1979-97
NH logic Unit 01070002, at head
(01094000) of Wildcat Falls, 0.9 south-
west of Merrimack, 1.5 mi
upstream from mouth. Drainage
area is 171 mi2.
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CONNECTICUT RIVER BASIN
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Ompompanoosuc Lat 43°47'23", Long 72°15'19", 1940-89±, 4-19-97 10.03 2,440 6-03-47 a 4,800
River at Orange County, Hydrologic Unit 1990-97
Union Village, 01080103, on right bank 100 ft
VT upstream from covered bridge
(01141500) at Union Village, 0.2 mi down-
stream from Avery Brook,
0.3 mi downstream from Union
Village Reservoir, and 3.9 mi
upstream from mouth. Drainage
area is 130 mi2 (Revised).
Mascoma River Lat 43°39'00", Long 72°04'50", 1939-78±, 4-19-97 7.62 2,660 3-27-53 8.94 3,780
at West Grafton County, Hydrologic 1985-97
Canaan, NH Unit 01080104, on right bank
(01145000) 45 ft downstream from Boston
and Maine Railroad bridge,
0.9 mi east of West Canaan,
1.2 mi downstream from Indian
River, 3.5 mi west of Canann
and at mile 19.3. Drainage
area is 80.5 mi2.
Black River Lat 43°20'00", Long 72°30'55", 1929-89±, 4-08-97 7.69 3,840 9-22-38 17.68 15,500
at North Windsor County, Hydrologic 1990-97
Springfield, Unit 01080106, on right bank
VT of North Springfield, 800 ft
(01153000) downstream from North Spring-
field Dam, 1,300 ft upstream
from Great Brook, and 8.1 mi
upstream from mouth. Drainage
area is 158 mi2.
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± Operated as a continuous-record gaging station.
a At different site and datum.
b Extreme outside period of record.
Miscellaneous Sites
Discharge measurements in the following table were made at miscellaneous sites throughout New Hampshire and Vermont.
___________________________________________________________________________________________________________________________
Measured
Drainage pre-
area viously Measurements
Stream Tributary Location (mi2) (water Date Discharge
to years) (ft3/s)
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MERRIMACK RIVER BASIN
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01075000 Merrimack Lat 43°58'29", Long 71°40'51", Grafton 193 1940-77±, 4-03-97 373
Pemigewasset River County, Hydrologic Unit 01070001, 1978-97 5-08-97 1,490
River 0.6 mi upstream from Eastman Brook, 6-20-97 768
0.34 mi southeast of Woodstock, NH. 9-17-97 120
01076000 Pemigewasset Lat 43°47'46", Long 71°50'42", Grafton 143 1929-77±, 11-20-96 295
Baker River River County, Hydrologic Unit 01070001, 1978-97 5-08-97 628
0.3 mi upstream from Halls Brook, and 6-24-97 1,200
1.8 mi southwest of Rumney, NH. 9-18-97 35.4
9-18-97 35.0
01077510 Pemigewasset Lat 43°37'05", Long 71°44'25", Grafton 98 1983-87, 4-01-97 278
Newfound River County, Hydrologic Unit 01070001, 1991-97 8-14-97 44.6
below outlet of Newfound Lake, 1.7 mi
north of Bristol, NH off State
Highway 3.
01081500 Atlantic Lat 43°25'26", Long 71°50'12", 1,507 1903-78±, 7-18-97 2,840
Merrimack Ocean Merrimack County Hydrologic Unit 1979-97 9-08-97 803
River 01070001, at Franklin Junction, NH,
1 mi downstream from confluence of
Pemigewasset and Winnipesaukee
Rivers.
01082000 Merrimack Lat 42°51'45", Long 71°57'55", 68.1 1945-77±, 10-03-96 36.4
Contoocook River Hillsborough County, Hydrologic Unit 1978-97 11-13-96 203
River 01070003, 1 mi south of Peterborough, 4-14-97 353
NH, and 1.5 mi upstream from 7-22-97 51.9
Nubanusit Brook.
01083000 Contoocook Lat 42°53'10", Long 71°58'24", 46.9 1920-31±, 10-04-96 23.1
Nubanusit River Hillsborough County, Hydrologic Unit 1945-89±, 10-25-96 590
Brook 01070003, on left bank 1.2 mi 1990-97 12-27-96 492
downstream from Edward MacDowell 4-10-97 382
Reservoir, 1.3 mi northwest of 4-23-97 430
Peterborough, NH and 1.5 mi upstream 5-23-97 83.5
from mouth.
01085000 Merrimack Lat 43°09'10", Long 71°51'24", 368 1939-77±, 10-15-96 244
Contoocook River Merrimack County, Hydrologic Unit 1978-97 10-23-96 5,910
River 01070003, 0.6 mi downstream from Sand 8-15-97 104
Brook and 2.5 mi southwest of
Henniker, NH.
01085500 Merrimack Lat 43°11'31", Long 71°44'05", 427 1903-07±, 11-20-96 1,000
Contoocook River Merrimack County, Hydrologic Unit 1963-89±, 04-15-97 2,260
River 01070003, on right bank 400 ft 1990-97 06-17-97 140
downstream from covered bridge at West 09-09-97 121
Hopkinton, NH, 0.2 mi downstream from
Hopkinton Dam, and 5.9 mi upstream
from Warner River.
01087000 Merrimack Lat 43°17'45", Long 71°41'46", 129 1927-89±, 05-27-97 189
Blackwater River Merrimack County, Hydrologic Unit 1990-97 09-08-97 32.3
River 01070003, on left bank 0.2 mi west of
Dingit Corner, NH, 2.4 mi downstream
from Blackwater Dam, 2.5 mi southeast
of Webster, and 6.5 mi upstream from
mouth.
01090800 Merrimack Lat 43°05'29", Long 71°39'36", 63.1 1963-89±, 4-23-97 803
Piscataquog River Hillsborough County, Hydrologic Unit 1990-97 4-23-97 797
River 01070002, on right bank 500 ft 6-17-97 18.6
downstream from Everett Dam and 1.4 mi 9-09-97 9.36
southeast of East Weare, NH.
01091500 Merrimack Lat 43°00'58", Long 71°33'03", 202 1939-78±, 10-01-96 197
Piscataquog River Hillsborough County, Hydrologic Unit 1979-97 4-08-97 1,420
River 01070002, 0.2 mi upstream from Harry 8-04-97 26.6
Brook, 0.9 mi downstream from Glen
Lake, and 2.5 mi east of Goffstown,
NH.
01093852 Merrimack Lat 42°50'39", long 71°42'35", 103 1994-96±, 01-07-97 327
Souhegan River River Hillsborough County, Hydrologic Unit 1997
(Site WRL-1) 01070002, on right bank, 1.9 mi
downstream from Stony Brook, 1.6 mi
upstream from Purgatory Brook, and
2.8 mi west of Milford, NH.
01093875 Merrimack Lat 42°50'46", long 71°40'52", 119 1994-96±, 01-07-97 379
Souheegan River Hillsborough County, Hydrologic Unit 1997
River (Site 01070002, on left bank, 0.1 mi
WLR-5) downstream from Purgatory Brook,
0.7 mi upstream from Tucker Brook,
and 1.1 mi west of Milford, NH.
01094000 Merrimack Lat 42°51'27", Long 71°30'24", 171 1909-76±, 10-02-96 73.3
Souhegan River Hillsborough County, Hydrologic Unit 1977-97 10-22-96 5,060
River 01070002, at head of Wildcat Falls, 7-17-97 59.8
0.9 mi southwest of Merrimack, NH,
1.5 mi upstream from mouth.
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CONNECTICUT RIVER BASIN
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01141500 Connecticut Lat 44°47'23", Long 71°15'19", Coos 130 1940-89±, 10-29-96 90.3
Ompompanoosuc River County, Hydrologic Unit 01080103, on 1990-97 12-16-96 260
River right bank 100 ft upstream from 1-31-97 102
covered bridge at Union Village, VT, 4-10-97 581
0.2 mi downstream from Avery Brook, 6-02-97 177
0.3 mi downstream from Union Village 6-26-97 76.7
Reservoir, and 3.9 mi upstream from 7-22-97 35.2
mouth (Revised). 8-05-97 19.9
9-05-97 42.9
01145000 Connecticut Lat 43°39'00", Long 72°04'50", Grafton 80.5 1939-78±, 10-01-96 17.8
Mascoma River River County, Hydrologic Unit 01080104, on 1985-97 06-19-97 93.8
right bank 45 ft downstream from
Boston and Maine Railroad bridge, 0.9 mi
east of West Canaan, 1.2 mi downstream
from Indian River, 3.5 mi west
of Canaan and at mile 19.3.
01152010 Connecticut Lat 43°23'10", Long 72°05'30", Sullivan 46 1983-87 10-02-96 14.6
Sugar River River County, Hydrologic Unit 01080107, on 1991-97 4-17-97 108
left bank below outlet of Lake Sunapee,
800 ft downstream from State
Highway 11 and behind Crutch Factory
at Sunapee, NH.
01153000 Connecticut Lat 43°20'00", Long 72°30'55", Windsor 158 1929-89±, 10-16-96 81.2
Black River River County, Hydrologic Unit 01080106, on 1990-97 11-20-96 234
right bank at North Springfield, VT, 4-17-97 1,040
800 ft downstream from North Springfield 6-09-97 108
Dam, 1,300 ft upstream from 7-30-97 28.3
Great Brook and 8.1 mi upstream from
mouth.
01160248 Ashuelot Lat 42°52'34", Long 72°16'39", Cheshire 75.3 1994-97 10-09-96 100
South Branch River County, Hydrologic Unit 01080201, at 11-19-96 88.6
Ashuelot Route 32 bridge, 800 ft northeast 6-04-97 62.7
River from Monodnock Regional High School 7-30-97 14.8
in Swanzey, NH, 2.3 mi upstream from 9-11-97 16.3
mouth, and 3.5 mi south of Keene, NH.
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± Operated as a continuous-record gaging station.
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