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:

Certified Facilities:

Cert No. Project Name

(click on name for hyperlink to Project information)

River State(s)
168 Milo Sebec River ME
167 Millinocket-Dolby West Branch, Penobscot River ME
166 Quinebaug – Five Mile Pond Quinebaug and Five Mile Rivers CT
165 Hanover Pond Dam Quinnipiac River CT
164 Feeder Dam Hudson River NY
163 Deer Rips/Androscoggin No. 3 Androscoggin River ME
162 Hooksett Merrimack River NH
161 Oswegatchie River Oswegatchie River NY
160 Canaan Connecticut River NH/VT
159 Macomb Salmon River NY
158 Chasm Salmon River NY
157 Yaleville Raquette River NY
156 Piercefield Raquette River NY
155 Hydraulic Race Erie Canal NY
154 Barton Village Clyde River VT
153 Gorham Androscoggin River NH
152 Burnshire North Fork Shenandoah River VA
151 West Delaware Tunnel West Delaware Aqueduct NY
150 Eastman Falls Pemigewasset River NH
149 Pownal Hoosic River VT
148 Waterbury Little River VT
147 Brooklyn Dam Upper Ammonoosuc River NH
146 Essex 19 Winooski River VT
145 Opal Springs Crooked River OR
144 Emeryville Oswegatchie River 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 River MA
132 Dog River Dog River VT
131 Chester Diversion Snake River ID
130 Chicopee Valley Aqueduct Chicopee Aqueduct 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 Downer’s Mills 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 Dam 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
109 Prospect No. 3 South Fork, 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 VT
90 Deerfield River Deerfield River MA / VT
89 Holyoke Connecticut River MA
88 Collins Chicopee River MA
86 Open Square Connecticut River MA
85 Martinsville Lulls Brook VT
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 Quinebaug River MA
74 Mechanicsville French River CT
73 Siphon Power Deschutes River OR
72 Automatic Messalonskee Stream ME
71 Dalles Dam North Fishway Columbia River 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 ID
52 Penacook Upper Contoocook River NH
51 Arkansas River Dam No.2 Arkansas River AR
48 Androscoggin Androscoggin 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 West Branch, St. Regis River 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
 8 Nisqually Nisqually River WA
 7 Beaver River Beaver River NY
5 Skagit Skagit River WA
4 Falls Creek Falls Creek OR
3 Putnam Quinebaug River CT
2 Island Park Henry’s Fork Snake River ID