Low Impact Certification means that the hydropower facility has been found by the Institute to meet or exceed the Institute’s Certification Criteria which address eight key areas: ecological flow regimes, water quality, upstream fish passage, downstream fish passage and protection, shoreline and watershed protection, threatened and endangered species protection, cultural and historic resource protection and recreational resources. Certification is designed to provide consumers with assurance that a facility has avoided or reduced their environmental impacts pursuant to the Low Impact Hydropower Institute’s criteria. Once certified, the owner or operator can market the power from the facility to consumers as produced by a LIHI certified Facility. Certification from the Institute may also qualify the power produced for other “green” energy certification programs.

The following hydropower facilities have been certified by the Low Impact Hydropower Institute and assigned a LIHI Certificate Number (click on the links to learn more about each project):

Certified Facilities:

Cert No. Project Name River State(s)
145 Opal Springs Crooked River OR
144 Emeryville Oswegatchie NY
143 Middle Fork Irrigation District Middle Fork, Hood River OR
142 Lowell Merrimack River MA
141 Mallison Falls Presumpscot River ME
140 Little Falls Presumpscot River ME
139 Gambo Presumpscot River ME
138 Dundee Presumpscot River ME
137 Eel Weir Presumpscot River ME
136 New Home Dam Millers River MA
135 Ladd’s Mill Winooski River VT
134 Vergennes Otter Creek VT
133 Byron Weston Housatonic MA
132 Dog River Dog River VT
131 Chester Diversion Snake River ID
130 Chicopee Valley Aqueduct (CVA) Chicopee River MA
129 North Gorham Presumpscot River ME
128 Otter Creek Otter Creek VT
127 Crocker Dam Whitman River MA
126 York Haven Susquehanna River PA
125 Hunts Pond Dam Millers River MA
124 Comtu Falls Black River VT
123 Stevens Mill Winnipesaukee River NH
122 Downers Mill Ottauquechee River VT
121 Lawrence Merrimack River MA
120 Gregg’s Falls Piscataquaog River NH
119 Crescent Westfield River MA
118 Webster Pembroke Suncook River NH
117 Clement Winnipesaukee River NH
116 Holtwood Lower Susquehanna River PA
115 Glendale Housatonic River MA
114 Mahoning Creek Mahoning Creek PA
113 Milford Penobscot River ME
112 Indian Orchard Chicopee River MA
111 Methuen Falls Spicket River MA
110 Stillwater B (see #67) Penobscot River ME
109 Prospect No. 3 Rogue River OR
108 Gilman Connecticut River NH / VT
107 Carver Falls Poultney River VT / NY
106 Greenville Shetucket River CT
105 Occum Shetucket River CT
104 Rolfe Canal Contoocook River NH
102 Putts Bridge Chicopee River MA
100 South Milton Salmon Falls River NH
99 Middlebury Lower Otter Creek VT
98 Weybridge Otter Creek VT
97 Cavendish Black River VT
96 Red Bridge Chicopee River MA
95 Passumpsic Passumpsic River VT
94 Gage Passumpsic River VT
93 Arnold Falls Passumpsic River VT
92 Pierce Mills Passumpsic River VT
91 Silver Lake Sucker Brook River VT
90 Deerfield River Deerfield MA / VT
89 Holyoke Connecticut River MA
88 Collins Chicopee River MA
87 Cresticon Millers River MA
86 Open Square Connecticut River MA
85 Martinsville Lulls Brook VT
84 Vine Street South Santiam River OR
82 Newfound Newfound River NH
80 Gardners Falls Deerfield River MA
79 Benton Falls Sebasticook River ME
78 Slack Dam Slack Dam VT
77 Winooski 8 Winooski River VT
76 West Dudley Quinepaug River MA
75 Henry M. Jackson Sultan River WA
74 Mechanicsville French CT
73 Siphon Power Deschutes River OR
72 Automatic Messalonskee Stream ME
71 Dalles Dam North Fishway Dalles Dam WA
69 North Umpqua North Umpqua River OR
68 Woronoco Westfield River MA
67 Stillwater Penobscot River ME
66 Orono Penobscot River ME
65 Medway Penobscot River ME
64 Penacook Lower Contoocook River NH
63 School Street Mohawk River NY
62 Cutler Bear River Basin UT
61 Ashton Snake River ID
60 Oakland Messalonskee Stream ME
59 Rice Rips Messalonskee Stream ME
58 Union Gas Messalonskee Stream ME
57 Oakdale Wachusett Reservoir MA
56 Loring Road Long Road Covered Storage Facility MA
55 Cosgrove Long Road Covered Storage Facility MA
54 Jackson Mills Nashua River NH
53 Bear River Bear River Basin ID
52 Penacook Upper Contoocook River NH
51 Arkansas River Dam No.2 Arkansas River AR
50 Alternatives Mumford River MA
48 Androscoggin Adroscoggin River ME
47 Ware River Ware River MA
46 Ashuelot & Lower Robertson Ashuelot River NH
45 Farmers Irrigation District Hood River OR
44 Ice House Nashua River MA
43 Deer Island Boston Harbor MA
42 Dodge Falls Connecticut River NH / VT
40 Vernon Connecticut River NH / VT
39 15-Mile Falls Connecticut River NH / VT
38 Rumford Falls Androscoggin River ME
37 Kingsley Dam Platte River NE
 35A Oswego Falls Oswego River NY
 35B Oswego River Oswego River NY
34 Black River and Beebee Island Black River NY
33 Willamette Falls Willamette River OR
32 Newton Falls Oswegatchie River NY
31 Boulder Creek Boulder Creek MT
30 Lake Chelan Chelan River WA
29 Jordanelle Provo River UT
27 West Branch St. Regis Saranac Lake NY
26 Goat Lake Goat Lake AK
25 Pelton Round Butte Deschutes River OR
24 Mother Ann Lee Kentucky River KY
23 Raystown Juniata River PA
22 Black Bear Lake Black Bear River AK
21 Buffalo River Buffalo River ID
20 Salmon River Westfield River NY
19 West Springfield Westfield River MA
18 Smoky Mountain Little Tennessee and Cheoah Rivers NC / TN
17 Summersville Gauley River WV
16 Winooski One Winooski River VT
15 Bowersock Mills Kansas River KS
 14C Lower Raquette River Raquette River NY
14B Middle Raquette River Raquette River NY
 14A Upper Raquette River Raquette River NY
 13 Hoosic River Hoosic River NY
 12 Tallassee Shoals Middle Oconee River GA
 11 Pawtucket Blackstone River RI
 10 Worumbo Androscoggin River ME
 9 Strawberry Creek Strawberry Creek WY
 8 Nisqually River Nisqually River WA
 7 Beaver River Beaver River NY
5 Skagit Skagit River WA
4 Falls Creek Falls Creek OR
3 Putnam Quinepaug River CT
2 Island Park Henry’s Fork Snake River ID