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New Hampshire Department of Environmental Services

Watershed Management Bureau

    Basic Information on all Designated Rivers

River
Year of Designation
Total Designated Miles
Natural Miles
Rural Miles
Rural-Community Miles
Community Miles
Vertical Drop (feet)
Percent Free-Flowing (estimated)
Number of Riverfont Towns
Completed Management Plan?
Native American Meaning of Name
Ammonoosuc
2007
45
0
18
15
12
1040
89
6
No
"fish place"
Ashuelot
1993
69
5
54
0
10
1346
84
10
Yes 2006
"In the midst" and "at" referring to the triangular point of land between the CT and Ashuelot Rivers
Cold
1999
21
0
19
0
2
975
99
5
No
 
Connecticut
1992
269
8
207
26
31
2480
33
NH: 26
VT: 27
Yes 1997
"long river" or 
"long tidal river"
Contoocook: 
Mainstem and North Branch
1991
133
0
75
0
58
M: 757
N: 672
78
14
Yes 1994
"crow place"
Exeter
1995
34
0
34
0
0
120
67
7
Yes 1999
 
Isinglass
2002
16
5
11
0
0
380
100
3
No
 
Lamprey
1990
15
0
15
0
0
60
88
2
Yes 1995
 
Lower Merrimack
1990
17
0
0
0
17
0
53
4

Yes 1988

"deep water" or 
"mighty waters"
Pemigewasset
1991
54
5
27
17
5
1600
47
12
Yes 2001
"swift waters" or 
"crooked mountain place"
Piscataquog: North, Middle, and South Branches
1993
67
31
19
13
4
N: 590
M: 205
S: 680
96
7
Yes 1999
"great deer place"
Saco
1990
40
6
34
0
0
1492
100
3
Yes 1994
"flowing out, outlet" probably originally referred to Saco Lake and then extended to the river
Souhegan
2000
35
0
21
9
5
837
93
6
Yes 2006
"river of difficult portages"
Swift
1990
24
22
2
0
0
2721
100
4
Yes 1994
 
Upper Merrimack
1990
31
0
31
0
0
160
97
6
Yes 2007
"sturgeon" or 
"mighty waters"
TOTALS 
 
873
82
567
80
144
   
115
   




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