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

Canaan Project, LIHI #160
項目名稱 Canaan
理海證書編號
 160
LIHI 證書期限 May 2, 2019 – May 1, 2029
擁有者 Central Rivers Power NH, LLC，LS Power/ Patriot Hydro, LLC 的子公司
狀態 新罕布夏州
地點 River Mile 370 on the Connecticut River in NH and VT
裝置容量 1.1兆瓦
平均年發電量 6,189 MWh (5-year average)
設施類型 河流的奔流
聯邦能源監管委員會 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 壩 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 壩 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.

工程包括：一座水壩， 發電站, tailrace channel, 溢洪道, intake structure, 壓力水管, transmission equipment, turbine, and bypassed reach.

具體 重力壩 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 鄰接 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 閃光板. 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 混流式水輪機. The bypassed reach is approximately 1,600 feet long and composed of ledge, cobble, and boulders.

該項目運營於 徑流 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 洄游性 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.

合規狀態

此證書包括以下設施特定條件：

2020年條件滿足。 條件一： Upon completion of the current water year (Oct. 1, 2018 – Sep. 30, 2019), the Facility Owner shall provide operations data to VDEC that documents 河川徑流 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: 未發現重大變更或合規問題。根據年度審查，該項目仍符合規定。

2023: 未發現重大變更或合規問題。根據年度審查，該項目仍符合規定。

2022: 未發現重大變更或合規問題。根據年度審查，該項目仍符合規定。

2021: 沒有報告變更或合規問題。根據年度審查，該項目仍符合規定。

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: 目前證書的年度報告尚未生效。

認證歷史

2022 年 1 月 1 日： 根據 2022 年 1 月 1 日發布的 LIHI 第二版認證手冊第 2.05 版，LIHI 證書期限已延長。

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.

該決定是初步決定，需等待 30 天的上訴期。只有在 60 天的評論期內對初始申請發表評論的人才有資格提出上訴。此類上訴需要包括有關該項目為何不符合 LIHI 標準的解釋。申訴請求可以透過電子郵件發送至 評論@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.  The full application and reviewer’s report are available below.

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 手冊 然後查看下面該項目的申請資料。

與特定 LIHI 標準（流量、水質、 魚道等等）將非常有幫助，但所有評論都會被考慮。意見可以透過電子郵件提交給研究所 評論@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 予以考慮。所有評論都將發佈到網站上，申請人將有機會回應。任何回應也將被發布。

認證文件

2019 年認證

關鍵文件