LIHI Certificate #160 – Canaan Project, New Hampshire/Vermont

Canaan Project, LIHI #160
项目名称 Canaan
LIHI 证书编号
 160
LIHI 证书期限 May 2, 2019 – May 1, 2029
所有者 Central Rivers Power NH, LLC，LS Power/ Patriot Hydro, LLC 的子公司
状态 新罕布什尔
地点 River Mile 370 on the Connecticut River in NH and VT
装机容量 1.1 MW
平均年发电量 6,189 MWh (5-year average)
设施类型 河流径流
联邦能源管理委员会 不。 P-7528 issued 2009, expires 07/31/2039

The Canaan Project is located on the upper Connecticut River in the towns of Canaan, VT, and Stewartstown, (West Stewartstown Village) NH. It is situated at river mile 370, 10 miles below Murphy 坝 at Lake Francis, and 70 miles upstream of the Gilman Project (LIHI #108). The project is one of thirteen dams on the mainstem of the Connecticut River which provide flood control and hydropower. The project 坝 was originally constructed in 1927 as a non-powered dam. The dam was reconstructed and upgraded in 1943, adding hydropower facilities to the project. The Project is owned and operated by Central Rivers Power NH, LLC.

该项目包括：一座水坝， 发电站, tailrace channel, 泄洪道, intake structure, 压力水管, transmission equipment, turbine, and bypassed reach.

具体 重力坝 is approximately 275 feet long and 18 feet tall, located on the Connecticut River in Stewartstown, NH. A concrete section is located at the south 邻接 and is 56 feet wide with stoplogs supported by steel stanchions. The main spillway is a concrete gravity, 弧形-shaped section approximately 150 feet long and equipped with 3.5 feet high pipe-supported 闪光板. A waste gate is located to the right of the main spillway. It consists of a 20-foot-wide concrete sluiceway equipped with an electrically operated 15-foot high steel tainter gate. A steel penstock, 1,360 feet long with diameter of 9 feet, and two steel surge tanks, 15′ 4″ in diameter and 21′ 4″ in height, convey water to the powerhouse located about 200 feet downstream of the surge tanks. These facilities are all located in Canaan, Vermont. The powerhouse contains a single vertical 弗朗西斯式水轮机. The bypassed reach is approximately 1,600 feet long and composed of ledge, cobble, and boulders.

The project operates in 径流 mode and impounds a 20-acre reservoir. The project provides a 165 cfs minimum flow into the bypassed reach year-round. This flow regime was developed based on the results of an Instream Flow Study with approval from the Vermont Agency of Natural Resources (VANR), New Hampshire Department of Environmental Services, New Hampshire Fish and Game Department (NHFG), and USFWS.

Waters in the project vicinity are classified as Class B, suitable for fishing, boating, and aquatic habitat. Waters upstream in the project vicinity are impaired due to low pH levels, but this is likely due to acidic atmospheric deposition. Additionally, VANR has confirmed that “the continued operation of the project does not contribute to impairment of waters of the State.”

Downstream dams preclude upstream access for migratory fish species on the Connecticut River. American eel, a catadromous species, is found in the lower reaches of the Connecticut River and may have been able historically to access the project area. The construction of downstream dams occurred prior to the installation of the project in 1927, blocking access to the project well before its inception. The project vicinity does support a very productive recreational fishery which includes rainbow trout, brown trout, brook trout, white sucker, and dwarf longnose sucker. Chain pickerel, yellow perch, smallmouth bass, largemouth bass, and rock bass are also present. Some of these populations are natural and some are stocked by NHFG. The minimum flow in the bypassed reach provides adequate flow to support aquatic habitat and downstream passage at the project.

The project lands consist of roughly 6 acres. Approximately 89% of the shoreline in the project boundary is undeveloped/undisturbed with industrial, commercial, and rural residential buildings in the vicinity of the project. The project operates under a 河岸 management plan, intended to maintain an undisturbed riparian zone along the river, impoundment, and bypassed reach. The project owner also conducts an invasive plant survey every four years. If any are identified, the owner collaborates with local resource agencies on eradication and control measures.

Threatened or endangered species potentially present in the project vicinity include the Northern Long-eared Bat, Canada Lynx, Satiny Willow, Pearlshell Mussel, Round Whitefish, Brook Trout, and Bald Eagle. While many of the above species have been noted in the project vicinity, there is a lack of suitable habitat in the project reach for these species based on review of locational information provided by the New Hampshire Natural Heritage Bureau. Project impacts are not believed to negatively affect these species.

An archaeological survey of the project reach was conducted in collaboration with the State Historic Preservation Office and the Alnobak Heritage Preservation Center. This study identified four historic period archaeological sites and five segments of the shoreline sensitive for prehistoric archaeological resources. The structural remains of the project’s predecessor, the Allen Electric Light Plant, were found along with a stone structure of unknown origin and the possible location of a 19th century building. The project provides annual reports to the State Historic Preservation Officer summarizing any activities that could impact these resources.

Recreation facilities at the impoundment include a portage route and takeout, parking, angler access, and an information kiosk. Bypassed reach facilities include parking, picnic tables, and a historic site information sign. Downstream facilities include a portage put-in and associated signage. Public access is provided free of charge.

合规状态

该证书包括以下针对设施的特定条件：

2020 年条件满足。 条件 1： Upon completion of the current water year (Oct. 1, 2018 – Sep. 30, 2019), the Facility Owner shall provide operations data to VDEC that documents run of river compliance. The Facility Owner shall submit the data to VDEC by December 31, 2019 and provide any response from the agency in the first annual compliance submittal to LIHI.

2024: 未发现任何重大变化或合规问题。根据年度审查，该项目仍然合规。

2023: 未发现任何重大变化或合规问题。根据年度审查，该项目仍然合规。

2022: 未发现任何重大变化或合规问题。根据年度审查，该项目仍然合规。

2021: 未报告任何变更或合规问题。根据年度审查，该项目仍然合规。

2020: There were no reported changes or compliance issues. The project remains in compliance based on the annual review. For Condition 1, the project reported submittal of operations data and VDEC confirmed to LIHI that the project remains in compliance with state water quality standards based on the data review.

2019: 当前证书的年度报告尚未生效。

认证历史

2022 年 1 月 1 日： LIHI 证书期限已根据 2022 年 1 月 1 日发布的 LIHI 第 2 版认证手册 2.05 版延长。有关新期限，请参阅上面的设施表。

September 4, 2019: The decision to certify the Canaan Hydroelectric Project is final. No appeals were received during the appeal period which closed on September 1, 2019. The certification term for the Project is from May 2, 2019 through May 1, 2024.

August 2, 2019: The Low Impact Hydropower Institute has preliminarily approved Low Impact Certification for the Canaan Hydroelectric Project.

此决定是初步决定，需等待 30 天的申诉期。只有在 60 天的评论期内对初始申请发表评论的人才有资格提出上诉。此类上诉需要说明该项目为何不符合 LIHI 标准。上诉请求可以通过电子邮件提交至 comments@lowimpacthydro.org with “Canaan Hydroelectric Project” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Ave, Suite 6, Lexington, MA 02420. All requests will be posted to the website.  The applicant will have an opportunity to respond and any response will also be posted. Requests must be received by 5 pm Eastern time on September 1, 2019.  完整的申请和审核员报告如下。

If no appeal requests are received and the decision becomes final, the Certification term for the Project (pending LIHI #160) will be May 2, 2019 for a term of five (5) years, which will expire on May 1, 2024.

May 3, 2019: The Low Impact Hydropower Institute has received a complete application for Low Impact Certification of the Canaan Hydroelectric Project.  LIHI is seeking public comment on this application.  Specifically, we are interested in knowing whether you think the Project meets the LIHI Low Impact Certification Criteria, as revised in the 2nd Edition Handbook.  Please review the program and criteria in LIHI’s revised 手册 然后查看下面该项目的申请材料。

与特定 LIHI 标准（流量、水质、 鱼道等）将非常有帮助，但所有评论都会被考虑。评论可以通过电子邮件提交给研究所 comments@lowimpacthydro.org with “Canaan Project Comments” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Avenue, Suite 6, Lexington, MA 02420.  Comments must be received on or before 5 pm Eastern time on July 2, 2019 予以考虑。所有评论都将发布到网站上，申请人将有机会作出回应。任何回应也将发布。

认证文件

2019 年认证

重要文件